UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
Form 10-Q
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2020March 31, 2021
OR
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    Commission    
    File Number    
  Exact name of registrant as specified in its charter and
principal office address and telephone number
State of
Incorporation
I.R.S.
Employer Identification No.
001-37976 Southwest Gas Holdings, Inc.Delaware81-3881866
5241 Spring Mountain Road8360 S. Durango Drive
Post Office Box 98510
Las Vegas,Nevada89193-8510
(702)876-7237
1-7850Southwest Gas CorporationCalifornia88-0085720
5241 Spring Mountain Road8360 S. Durango Drive
Post Office Box 98510
Las Vegas,Nevada89193-8510
(702)876-7237
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading SymbolName of each exchange on which registered
Southwest Gas Holdings, Inc. Common Stock, $1 Par ValueSWXNew York Stock Exchange
Indicate by check mark whether each registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that each registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes      No  
Indicate by check mark whether each registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that each registrant was required to submit such files).    Yes      No  
Indicate by check mark whether each registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “non-accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Southwest Gas Holdings, Inc.:
Large accelerated filer   Accelerated filer 
Non-accelerated filer   Smaller reporting company   
Emerging growth company    
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  
Southwest Gas Corporation:
Large accelerated filer   Accelerated filer 
Non-accelerated filer   Smaller reporting company   
Emerging growth company    
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  
Indicate by check mark whether each registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes      No  
Indicate the number of shares outstanding of each of the issuer’s classes of common stock as of the latest practicable date.
Southwest Gas Holdings, Inc. Common Stock, $1 Par Value, 55,914,51658,001,396 shares as of July 31, 2020.April 30, 2021.
All of the outstanding shares of common stock ($1 par value) of Southwest Gas Corporation were held by Southwest Gas Holdings, Inc. as of July 31, 2020.April 30, 2021.
SOUTHWEST GAS CORPORATION MEETS THE CONDITIONS SET FORTH IN GENERAL INSTRUCTION (H)(1)(a) and (b) OF FORM 10-Q AND IS THEREFORE FILING THIS REPORT WITH THE REDUCED DISCLOSURE FORMAT AS PERMITTED BY GENERAL INSTRUCTION H(2).


SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

FILING FORMAT
This quarterly report on Form 10-Q is a combined report being filed by two separate registrants: Southwest Gas Holdings, Inc. and Southwest Gas Corporation. Except where the content clearly indicates otherwise, any reference in the report to “we,” “us” or “our” is to the holding company or the consolidated entity of Southwest Gas Holdings, Inc. and all of its subsidiaries, including Southwest Gas Corporation, which is a distinct registrant that is a wholly owned subsidiary of Southwest Gas Holdings, Inc. Information contained herein relating to any individual company is filed by such company on its own behalf. Each company makes representations only as to itself and makes no other representation whatsoever as to any other company.
Part I—Financial information in this Quarterly Report on Form 10-Q includes separate financial statements (i.e., balance sheets, statements of income, statements of comprehensive income, statements of cash flows, and statements of equity) for Southwest Gas Holdings, Inc. and Southwest Gas Corporation, in that order. The Notes to the Condensed Consolidated Financial Statements are presented on a combined basis for both entities. All Items other than Part I – Item 1 are combined for the reporting companies.

2

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

PART I - FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS
SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED BALANCE SHEETS
(Thousands of dollars, except par value)
(Unaudited)
June 30, 2020December 31, 2019March 31, 2021December 31, 2020
ASSETSASSETSASSETS
Utility plant:Utility plant:Utility plant:
Gas plantGas plant$8,086,597  $7,813,221  Gas plant$8,479,295 $8,384,000 
Less: accumulated depreciationLess: accumulated depreciation(2,367,836) (2,313,050) Less: accumulated depreciation(2,453,924)(2,419,348)
Construction work in progressConstruction work in progress217,616  185,026  Construction work in progress215,395 211,429 
Net utility plantNet utility plant5,936,377  5,685,197  Net utility plant6,240,766 6,176,081 
Other property and investmentsOther property and investments809,111  784,173  Other property and investments842,672 834,245 
Current assets:Current assets:Current assets:
Cash and cash equivalentsCash and cash equivalents199,591  49,539  Cash and cash equivalents92,345 83,352 
Accounts receivable, net of allowancesAccounts receivable, net of allowances480,077  474,097  Accounts receivable, net of allowances479,184 522,172 
Accrued utility revenueAccrued utility revenue35,800  79,100  Accrued utility revenue50,500 82,400 
Income taxes receivable, netIncome taxes receivable, net4,077  31,751  Income taxes receivable, net6,523 10,884 
Deferred purchased gas costsDeferred purchased gas costs—  44,412  Deferred purchased gas costs238,886 2,053 
Prepaid and other current assetsPrepaid and other current assets147,655  180,957  Prepaid and other current assets133,466 170,152 
Total current assetsTotal current assets867,200  859,856  Total current assets1,000,904 871,013 
Noncurrent assets:Noncurrent assets:Noncurrent assets:
GoodwillGoodwill337,978  343,023  Goodwill346,553 345,184 
Deferred income taxesDeferred income taxes632  856  Deferred income taxes563 455 
Deferred charges and other assetsDeferred charges and other assets474,737  496,943  Deferred charges and other assets497,187 508,875 
Total noncurrent assetsTotal noncurrent assets813,347  840,822  Total noncurrent assets844,303 854,514 
Total assetsTotal assets$8,426,035  $8,170,048  Total assets$8,928,645 $8,735,853 
CAPITALIZATION AND LIABILITIESCAPITALIZATION AND LIABILITIESCAPITALIZATION AND LIABILITIES
Capitalization:Capitalization:Capitalization:
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 55,909,903 and 55,007,433 shares)$57,540  $56,637  
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 57,995,563 and 57,192,925 shares)Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 57,995,563 and 57,192,925 shares)$59,625 $58,823 
Additional paid-in capital Additional paid-in capital1,523,630  1,466,937   Additional paid-in capital1,660,108 1,609,155 
Accumulated other comprehensive loss, netAccumulated other comprehensive loss, net(55,617) (56,732) Accumulated other comprehensive loss, net(58,388)(61,003)
Retained earningsRetained earnings1,085,742  1,039,072  Retained earnings1,112,377 1,067,978 
Total equityTotal equity2,611,295  2,505,914  Total equity2,773,722 2,674,953 
Redeemable noncontrolling interestRedeemable noncontrolling interest86,921  84,542  Redeemable noncontrolling interest205,286 165,716 
Long-term debt, less current maturitiesLong-term debt, less current maturities2,639,317  2,300,482  Long-term debt, less current maturities2,696,570 2,732,200 
Total capitalizationTotal capitalization5,337,533  4,890,938  Total capitalization5,675,578 5,572,869 
Current liabilities:Current liabilities:Current liabilities:
Current maturities of long-term debt Current maturities of long-term debt171,668  163,512   Current maturities of long-term debt67,334 40,433 
Short-term debtShort-term debt58,000  211,000  Short-term debt310,000 107,000 
Accounts payableAccounts payable189,373  238,921  Accounts payable182,805 231,301 
Customer depositsCustomer deposits69,898  69,165  Customer deposits67,121 67,920 
Income taxes payable, netIncome taxes payable, net—  2,069  Income taxes payable, net19,356 12,556 
Accrued general taxesAccrued general taxes48,220  48,160  Accrued general taxes72,103 48,640 
Accrued interestAccrued interest21,525  21,329  Accrued interest34,571 20,536 
Deferred purchased gas costsDeferred purchased gas costs69,938  60,755  Deferred purchased gas costs54,636 
Other current liabilitiesOther current liabilities289,395  264,950  Other current liabilities282,745 328,945 
Total current liabilitiesTotal current liabilities918,017  1,079,861  Total current liabilities1,036,035 911,967 
Deferred income taxes and other credits:Deferred income taxes and other credits:Deferred income taxes and other credits:
Deferred income taxes and investment tax credits, netDeferred income taxes and investment tax credits, net631,388  599,840  Deferred income taxes and investment tax credits, net671,574 647,453 
Accumulated removal costsAccumulated removal costs401,000  395,000  Accumulated removal costs407,000 404,000 
Other deferred credits and other long-term liabilitiesOther deferred credits and other long-term liabilities1,138,097  1,204,409  Other deferred credits and other long-term liabilities1,138,458 1,199,564 
Total deferred income taxes and other creditsTotal deferred income taxes and other credits2,170,485  2,199,249  Total deferred income taxes and other credits2,217,032 2,251,017 
Total capitalization and liabilitiesTotal capitalization and liabilities$8,426,035  $8,170,048  Total capitalization and liabilities$8,928,645 $8,735,853 
The accompanying notes are an integral part of these statements.
3

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(In thousands, except per share amounts)
(Unaudited)
Three Months Ended
June 30,
Six Months Ended
June 30,
Twelve Months Ended
June 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
202020192020201920202019 2021202020212020
Operating revenues:Operating revenues:Operating revenues:
Gas operating revenuesGas operating revenues$262,434  $258,711  $765,261  $779,388  $1,354,812  $1,367,124  Gas operating revenues$521,932 $502,827 $1,369,690 $1,351,089 
Utility infrastructure services revenuesUtility infrastructure services revenues494,813  454,300  828,306  767,162  1,812,122  1,634,226  Utility infrastructure services revenues363,975 333,493 1,978,770 1,771,609 
Total operating revenuesTotal operating revenues757,247  713,011  1,593,567  1,546,550  3,166,934  3,001,350  Total operating revenues885,907 836,320 3,348,460 3,122,698 
Operating expenses:Operating expenses:Operating expenses:
Net cost of gas soldNet cost of gas sold67,473  65,182  228,294  257,786  355,672  407,976  Net cost of gas sold156,021 160,821 338,037 353,381 
Operations and maintenanceOperations and maintenance99,419  105,293  203,200  211,538  415,812  410,145  Operations and maintenance106,690 103,781 411,025 421,686 
Depreciation and amortizationDepreciation and amortization77,217  70,342  164,870  147,881  320,226  273,308  Depreciation and amortization93,442 87,653 337,816 313,351 
Taxes other than income taxesTaxes other than income taxes15,342  15,126  31,720  31,332  62,716  61,307  Taxes other than income taxes20,687 16,378 67,769 62,500 
Utility infrastructure services expensesUtility infrastructure services expenses430,224  402,199  749,538  702,664  1,620,101  1,478,730  Utility infrastructure services expenses335,614 319,314 1,745,729 1,592,076 
Total operating expensesTotal operating expenses689,675  658,142  1,377,622  1,351,201  2,774,527  2,631,466  Total operating expenses712,454 687,947 2,900,376 2,742,994 
Operating incomeOperating income67,572  54,869  215,945  195,349  392,407  369,884  Operating income173,453 148,373 448,084 379,704 
Other income and (expenses):Other income and (expenses):Other income and (expenses):
Net interest deductionsNet interest deductions(26,450) (26,831) (54,830) (53,228) (110,828) (103,616) Net interest deductions(23,964)(28,380)(107,061)(111,209)
Other income (deductions)Other income (deductions)7,925  1,146  (12,845) 7,985  (10,745) (2,401) Other income (deductions)448 (20,770)14,429 (17,524)
Total other income and (expenses)Total other income and (expenses)(18,525) (25,685) (67,675) (45,243) (121,573) (106,017) Total other income and (expenses)(23,516)(49,150)(92,632)(128,733)
Income before income taxesIncome before income taxes49,047  29,184  148,270  150,106  270,834  263,867  Income before income taxes149,937 99,223 355,452 250,971 
Income tax expenseIncome tax expense9,166  6,352  35,384  31,890  59,517  63,844  Income tax expense31,092 26,218 70,627 56,703 
Net incomeNet income39,881  22,832  112,886  118,216  211,317  200,023  Net income118,845 73,005 284,825 194,268 
Net income attributable to noncontrolling interests1,916  776  2,379  1,351  3,739  1,523  
Net income attributable to noncontrolling interestNet income attributable to noncontrolling interest1,552 463 7,750 2,599 
Net income attributable to Southwest Gas Holdings, Inc.Net income attributable to Southwest Gas Holdings, Inc.$37,965  $22,056  $110,507  $116,865  $207,578  $198,500  Net income attributable to Southwest Gas Holdings, Inc.$117,293 $72,542 $277,075 $191,669 
Earnings per share:Earnings per share:Earnings per share:
BasicBasic$0.68  $0.41  $2.00  $2.18  $3.77  $3.82  Basic$2.04 $1.31 $4.90 $3.50 
DilutedDiluted$0.68  $0.41  $1.99  $2.18  $3.76  $3.82  Diluted$2.03 $1.31 $4.89 $3.50 
Weighted average shares:Weighted average shares:Weighted average shares:
BasicBasic55,462  53,935  55,386  53,654  55,105  51,914  Basic57,600 55,310 56,564 54,726 
DilutedDiluted55,532  54,003  55,448  53,716  55,171  51,977  Diluted57,679 55,363 56,649 54,792 
The accompanying notes are an integral part of these statements.

4

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Thousands of dollars)
(Unaudited)
Three Months Ended
June 30,
Six Months Ended
June 30,
Twelve Months Ended
June 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
202020192020201920202019 2021202020212020
Net incomeNet income$39,881  $22,832  $112,886  $118,216  $211,317  $200,023  Net income$118,845 $73,005 $284,825 $194,268 
Other comprehensive income (loss), net of taxOther comprehensive income (loss), net of taxOther comprehensive income (loss), net of tax
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Net actuarial lossNet actuarial loss—  —  —  —  (54,026) (15,524) Net actuarial loss(43,730)(54,026)
Amortization of prior service costAmortization of prior service cost220  242  440  483  923  990  Amortization of prior service cost182 220 840 945 
Amortization of net actuarial lossAmortization of net actuarial loss7,187  4,441  14,375  8,883  23,258  21,658  Amortization of net actuarial loss8,474 7,188 30,037 20,513 
Prior service costPrior service cost—  —  —  —  (1,426) —  Prior service cost(1,426)
Regulatory adjustmentRegulatory adjustment(6,380) (4,064) (12,760) (8,128) 23,445  (2,895) Regulatory adjustment(7,277)(6,380)4,753 25,760 
Net defined benefit pension plansNet defined benefit pension plans1,027  619  2,055  1,238  (7,826) 4,229  Net defined benefit pension plans1,379 1,028 (8,100)(8,234)
Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):
Amounts reclassified into net incomeAmounts reclassified into net income635  636  1,271  1,271  2,541  2,541  Amounts reclassified into net income413 636 2,244 2,542 
Net forward-starting interest rate swapsNet forward-starting interest rate swaps635  636  1,271  1,271  2,541  2,541  Net forward-starting interest rate swaps413 636 2,244 2,542 
Foreign currency translation adjustmentsForeign currency translation adjustments1,794  787  (2,211) 1,578  (1,751) 169  Foreign currency translation adjustments823 (4,005)6,541 (2,758)
Total other comprehensive income (loss), net of taxTotal other comprehensive income (loss), net of tax3,456  2,042  1,115  4,087  (7,036) 6,939  Total other comprehensive income (loss), net of tax2,615 (2,341)685 (8,450)
Comprehensive incomeComprehensive income43,337  24,874  114,001  122,303  204,281  206,962  Comprehensive income121,460 70,664 285,510 185,818 
Comprehensive income attributable to noncontrolling interests1,916  776  2,379  1,351  3,739  1,523  
Comprehensive income attributable to noncontrolling interestComprehensive income attributable to noncontrolling interest1,552 463 7,750 2,599 
Comprehensive income attributable to Southwest Gas Holdings, Inc.Comprehensive income attributable to Southwest Gas Holdings, Inc.$41,421  $24,098  $111,622  $120,952  $200,542  $205,439  Comprehensive income attributable to Southwest Gas Holdings, Inc.$119,908 $70,201 $277,760 $183,219 
The accompanying notes are an integral part of these statements.

5

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Thousands of dollars)
(Unaudited)
Six Months Ended
June 30,
Twelve Months Ended
June 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
2020201920202019 2021202020212020
CASH FLOW FROM OPERATING ACTIVITIES:CASH FLOW FROM OPERATING ACTIVITIES:CASH FLOW FROM OPERATING ACTIVITIES:
Net incomeNet income$112,886  $118,216  $211,317  $200,023  Net income$118,845 $73,005 $284,825 $194,268 
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments to reconcile net income to net cash provided by (used in) operating activities:Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortizationDepreciation and amortization164,870  147,881  320,226  273,308  Depreciation and amortization93,442 87,653 337,816 313,351 
Deferred income taxesDeferred income taxes31,121  31,831  53,452  49,554  Deferred income taxes23,326 25,309 48,734 54,548 
Changes in current assets and liabilities:Changes in current assets and liabilities:Changes in current assets and liabilities:
Accounts receivable, net of allowancesAccounts receivable, net of allowances(9,746) (2,612) (61,379) (5,770) Accounts receivable, net of allowances42,892 45,837 (51,717)7,154 
Accrued utility revenueAccrued utility revenue43,300  42,300  (900) (700) Accrued utility revenue31,900 31,000 (2,400)(1,100)
Deferred purchased gas costsDeferred purchased gas costs53,595  (43,341) 38,445  5,128  Deferred purchased gas costs(291,469)10,155 (265,385)19,527 
Accounts payableAccounts payable(47,198) (48,155) (908) 8,088  Accounts payable(41,147)(60,723)11,882 (49,945)
Accrued taxesAccrued taxes9,019  (2,272) 16,534  3,123  Accrued taxes34,636 30,377 19,430 10,220 
Other current assets and liabilitiesOther current assets and liabilities78,538  54,988  97,687  17,721  Other current assets and liabilities(5,255)76,453 25,719 102,742 
Gains on sale of equipmentGains on sale of equipment(309) (831) (4,951) (2,284) Gains on sale of equipment(1,509)(28)(3,329)(5,268)
Changes in undistributed stock compensationChanges in undistributed stock compensation4,332  4,702  6,526  7,513  Changes in undistributed stock compensation3,658 2,816 7,956 6,524 
Equity AFUDCEquity AFUDC(2,181) (1,967) (4,375) (5,008) Equity AFUDC(981)(1,061)(4,644)(4,262)
Changes in deferred charges and other assetsChanges in deferred charges and other assets(8,268) (15,870) (13,449) (16,486) Changes in deferred charges and other assets(10,379)6,495 (49,465)1,772 
Changes in other liabilities and deferred creditsChanges in other liabilities and deferred credits(54,819) (6,454) (61,129) 26,040  Changes in other liabilities and deferred credits(50,416)(55,722)(57,365)(65,704)
Net cash provided by operating activities375,140  278,416  597,096  560,250  
Net cash provided by (used in) operating activitiesNet cash provided by (used in) operating activities(52,457)271,566 302,057 583,827 
CASH FLOW FROM INVESTING ACTIVITIES:CASH FLOW FROM INVESTING ACTIVITIES:CASH FLOW FROM INVESTING ACTIVITIES:
Construction expenditures and property additionsConstruction expenditures and property additions(423,435) (471,578) (890,005) (898,481) Construction expenditures and property additions(152,709)(210,655)(767,159)(938,141)
Acquisition of businesses, net of cash acquiredAcquisition of businesses, net of cash acquired(250) (19,533) (28,355) (266,697) Acquisition of businesses, net of cash acquired(47,638)
Changes in customer advancesChanges in customer advances4,098  9,483  13,616  14,788  Changes in customer advances4,286 5,434 12,885 21,357 
OtherOther5,045  1,159  19,039  2,936  Other3,563 4,430 8,136 19,321 
Net cash used in investing activitiesNet cash used in investing activities(414,542) (480,469) (885,705) (1,147,454) Net cash used in investing activities(144,860)(200,791)(746,138)(945,101)
CASH FLOW FROM FINANCING ACTIVITIES:CASH FLOW FROM FINANCING ACTIVITIES:CASH FLOW FROM FINANCING ACTIVITIES:
Issuance of common stock, netIssuance of common stock, net55,498  102,743  110,701  388,006  Issuance of common stock, net48,990 3,148 185,087 135,215 
Dividends paidDividends paid(61,445) (56,738) (120,834) (107,993) Dividends paid(32,619)(30,006)(128,117)(118,531)
Issuance of long-term debt, netIssuance of long-term debt, net620,303  421,594  730,305  531,368  Issuance of long-term debt, net10,659 99,978 573,058 601,908 
Retirement of long-term debtRetirement of long-term debt(117,536) (53,604) (277,721) (190,586) Retirement of long-term debt(21,228)(75,168)(302,466)(257,797)
Change in credit facility and commercial paper(150,000) (104,000) (46,000) (2,000) 
Change in short-term debtChange in short-term debt(153,000) (152,000) 58,000  (22,500) Change in short-term debt203,000 (54,000)153,000 (31,000)
Principal payments on finance lease obligations(102) (107) (207) (439) 
Withholding remittance - share-based compensationWithholding remittance - share-based compensation(2,736) (1,856) (2,738) (2,112) Withholding remittance - share-based compensation(1,242)(2,736)(1,242)(2,756)
OtherOther(1,358) (966) (1,668) (2,812) Other(1,353)(250)(4,505)(1,615)
Net cash provided by financing activities189,624  155,066  449,838  590,932  
Net cash provided by (used in) financing activitiesNet cash provided by (used in) financing activities206,207 (59,034)474,815 325,424 
Effects of currency translation on cash and cash equivalentsEffects of currency translation on cash and cash equivalents(170) 72  (84) (12) Effects of currency translation on cash and cash equivalents103 (315)646 (222)
Change in cash and cash equivalentsChange in cash and cash equivalents150,052  (46,915) 161,145  3,716  Change in cash and cash equivalents8,993 11,426 31,380 (36,072)
Cash and cash equivalents at beginning of periodCash and cash equivalents at beginning of period49,539  85,361  38,446  34,730  Cash and cash equivalents at beginning of period83,352 49,539 60,965 97,037 
Cash and cash equivalents at end of periodCash and cash equivalents at end of period$199,591  $38,446  $199,591  $38,446  Cash and cash equivalents at end of period$92,345 $60,965 $92,345 $60,965 
SUPPLEMENTAL INFORMATION:SUPPLEMENTAL INFORMATION:SUPPLEMENTAL INFORMATION:
Interest paid, net of amounts capitalizedInterest paid, net of amounts capitalized$51,430  $49,996  $103,692  $96,476  Interest paid, net of amounts capitalized$8,303 $13,073 $100,412 $99,481 
Income taxes paid (received), netIncome taxes paid (received), net$(19,410) $1,832  $(18,490) $(13,454) Income taxes paid (received), net$1,651 $(20,064)$10,764 $(17,766)
The accompanying notes are an integral part of these statements.
6

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
(In thousands, except per share amounts)
(Unaudited)
Three Months Ended
June 30,
Six Months Ended
June 30,
Three Months Ended
March 31,
202020192020201920212020
Common stock sharesCommon stock sharesCommon stock shares
Beginning balances55,126  53,391  55,007  53,026  Beginning balances57,193 55,007 
Common stock issuances784  930  903  1,295  Common stock issuances802 119 
Ending balances55,910  54,321  55,910  54,321  Ending balances57,995 55,126 
Common stock amountCommon stock amountCommon stock amount
Beginning balances$56,756  $55,021  $56,637  $54,656  Beginning balances$58,823 $56,637 
Common stock issuances784  930  903  1,295  Common stock issuances802 119 
Ending balances57,540  55,951  57,540  55,951  Ending balances59,625 56,756 
Additional paid-in capitalAdditional paid-in capitalAdditional paid-in capital
Beginning balances1,470,411  1,332,793  1,466,937  1,305,769  
Common stock issuances53,219  77,582  56,693  104,606  Beginning balances1,609,155 1,466,937 
Change in ownership of noncontrolling interest—  (452) —  (452) Common stock issuances50,953 3,474 
Ending balances1,523,630  1,409,923  1,523,630  1,409,923  Ending balances1,660,108 1,470,411 
Accumulated other comprehensive lossAccumulated other comprehensive lossAccumulated other comprehensive loss
Beginning balances(59,073) (50,623) (56,732) (52,668) Beginning balances(61,003)(56,732)
Foreign currency exchange translation adjustment1,794  787  (2,211) 1,578  Foreign currency exchange translation adjustment823 (4,005)
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax1,027  619  2,055  1,238  Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax1,379 1,028 
FSIRS amounts reclassified to net income, net of tax635  636  1,271  1,271  FSIRS amounts reclassified to net income, net of tax413 636 
Ending balances(55,617) (48,581) (55,617) (48,581) Ending balances(58,388)(59,073)
Retained earningsRetained earningsRetained earnings
Beginning balances1,079,801  1,009,809  1,039,072  944,285  Beginning balances1,067,978 1,039,072 
Net income37,965  22,056  110,507  116,865  Net income117,293 72,542 
Dividends declared(32,024) (29,795) (63,837) (59,080) Dividends declared(34,876)(31,813)
Redemption value adjustments(38,018)
Ending balances1,085,742  1,002,070  1,085,742  1,002,070  Ending balances1,112,377 1,079,801 
Total Southwest Gas Holdings, Inc. equity ending balances2,611,295  2,419,363  2,611,295  2,419,363  
Noncontrolling interest
Beginning balances—  (452) —  (452) 
Change in ownership of noncontrolling interest—  452  —  452  
Ending balances—  —  —  —  
Total equity ending balancesTotal equity ending balances$2,611,295  $2,419,363  $2,611,295  $2,419,363  Total equity ending balances$2,773,722 $2,547,895 
Dividends declared per common shareDividends declared per common share$0.57  $0.545  $1.14  $1.09  Dividends declared per common share$0.595 $0.57 
The accompanying notes are an integral part of these statements.
7

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED BALANCE SHEETS
(Thousands of dollars)
(Unaudited)
June 30, 2020December 31, 2019March 31, 2021December 31, 2020
ASSETSASSETSASSETS
Utility plant:Utility plant:Utility plant:
Gas plantGas plant$8,086,597  $7,813,221  Gas plant$8,479,295 $8,384,000 
Less: accumulated depreciationLess: accumulated depreciation(2,367,836) (2,313,050) Less: accumulated depreciation(2,453,924)(2,419,348)
Construction work in progressConstruction work in progress217,616  185,026  Construction work in progress215,395 211,429 
Net utility plantNet utility plant5,936,377  5,685,197  Net utility plant6,240,766 6,176,081 
Other property and investmentsOther property and investments130,634  133,787  Other property and investments146,338 143,611 
Current assets:Current assets:Current assets:
Cash and cash equivalentsCash and cash equivalents190,784  40,489  Cash and cash equivalents49,795 41,070 
Accounts receivable, net of allowanceAccounts receivable, net of allowance93,746  150,793  Accounts receivable, net of allowance174,492 146,861 
Accrued utility revenueAccrued utility revenue35,800  79,100  Accrued utility revenue50,500 82,400 
Income taxes receivable, netIncome taxes receivable, net—  25,901  Income taxes receivable, net11,155 
Deferred purchased gas costsDeferred purchased gas costs—  44,412  Deferred purchased gas costs238,886 2,053 
Prepaid and other current assetsPrepaid and other current assets123,829  165,639  Prepaid and other current assets118,397 152,748 
Total current assetsTotal current assets444,159  506,334  Total current assets632,070 436,287 
Noncurrent assets:Noncurrent assets:Noncurrent assets:
GoodwillGoodwill10,095  10,095  Goodwill10,095 10,095 
Deferred charges and other assetsDeferred charges and other assets454,478  463,333  Deferred charges and other assets481,184 490,562 
Total noncurrent assetsTotal noncurrent assets464,573  473,428  Total noncurrent assets491,279 500,657 
Total assetsTotal assets$6,975,743  $6,798,746  Total assets$7,510,453 $7,256,636 
CAPITALIZATION AND LIABILITIESCAPITALIZATION AND LIABILITIESCAPITALIZATION AND LIABILITIES
Capitalization:Capitalization:Capitalization:
Common stockCommon stock$49,112  $49,112  Common stock$49,112 $49,112 
Additional paid-in capital Additional paid-in capital1,329,843  1,229,083   Additional paid-in capital1,458,344 1,410,345 
Accumulated other comprehensive loss, netAccumulated other comprehensive loss, net(51,825) (55,151) Accumulated other comprehensive loss, net(59,343)(61,135)
Retained earningsRetained earnings824,847  782,108  Retained earnings926,011 835,146 
Total equityTotal equity2,151,977  2,005,152  Total equity2,374,124 2,233,468 
Long-term debt, less current maturitiesLong-term debt, less current maturities2,287,418  1,991,333  Long-term debt, less current maturities2,413,588 2,438,206 
Total capitalizationTotal capitalization4,439,395  3,996,485  Total capitalization4,787,712 4,671,674 
Current liabilities:Current liabilities:Current liabilities:
Current maturities of long-term debtCurrent maturities of long-term debt125,000  125,000  Current maturities of long-term debt25,000 
Short-term debtShort-term debt—  194,000  Short-term debt267,000 57,000 
Accounts payableAccounts payable91,482  149,368  Accounts payable117,471 161,646 
Customer depositsCustomer deposits69,898  69,165  Customer deposits67,121 67,920 
Income taxes payableIncome taxes payable8,538  —  Income taxes payable7,232 
Accrued general taxesAccrued general taxes48,220  48,160  Accrued general taxes72,103 48,640 
Accrued interestAccrued interest21,470  21,256  Accrued interest34,532 20,495 
Deferred purchased gas costsDeferred purchased gas costs69,938  60,755  Deferred purchased gas costs54,636 
Payable to parentPayable to parent309  844  Payable to parent90 142 
Other current liabilitiesOther current liabilities139,324  126,573  Other current liabilities141,167 146,046 
Total current liabilitiesTotal current liabilities574,179  795,121  Total current liabilities731,716 556,525 
Deferred income taxes and other credits:Deferred income taxes and other credits:Deferred income taxes and other credits:
Deferred income taxes and investment tax credits, netDeferred income taxes and investment tax credits, net558,285  539,050  Deferred income taxes and investment tax credits, net596,617 581,100 
Accumulated removal costsAccumulated removal costs401,000  395,000  Accumulated removal costs407,000 404,000 
Other deferred credits and other long-term liabilitiesOther deferred credits and other long-term liabilities1,002,884  1,073,090  Other deferred credits and other long-term liabilities987,408 1,043,337 
Total deferred income taxes and other creditsTotal deferred income taxes and other credits1,962,169  2,007,140  Total deferred income taxes and other credits1,991,025 2,028,437 
Total capitalization and liabilitiesTotal capitalization and liabilities$6,975,743  $6,798,746  Total capitalization and liabilities$7,510,453 $7,256,636 
The accompanying notes are an integral part of these statements.
8

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(Thousands of dollars)
(Unaudited)
Three Months Ended
June 30,
Six Months Ended
June 30,
Twelve Months Ended
June 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
202020192020201920202019 2021202020212020
Gas operating revenuesGas operating revenues$262,434  $258,711  $765,261  $779,388  $1,354,812  $1,367,124  Gas operating revenues$521,932 $502,827 $1,369,690 $1,351,089 
Operating expenses:Operating expenses:Operating expenses:
Net cost of gas soldNet cost of gas sold67,473  65,182  228,294  257,786  355,672  407,976  Net cost of gas sold156,021 160,821 338,037 353,381 
Operations and maintenanceOperations and maintenance99,320  104,991  202,408  210,533  414,049  407,948  Operations and maintenance106,135 103,088 409,429 419,720 
Depreciation and amortizationDepreciation and amortization53,198  49,343  117,923  106,955  226,588  201,146  Depreciation and amortization68,698 64,725 239,268 222,733 
Taxes other than income taxesTaxes other than income taxes15,342  15,126  31,720  31,332  62,716  61,307  Taxes other than income taxes20,687 16,378 67,769 62,500 
Total operating expensesTotal operating expenses235,333  234,642  580,345  606,606  1,059,025  1,078,377  Total operating expenses351,541 345,012 1,054,503 1,058,334 
Operating incomeOperating income27,101  24,069  184,916  172,782  295,787  288,747  Operating income170,391 157,815 315,187 292,755 
Other income and (expenses):Other income and (expenses):Other income and (expenses):
Net interest deductionsNet interest deductions(23,991) (23,345) (49,049) (46,444) (97,631) (88,780) Net interest deductions(22,166)(25,058)(98,256)(96,985)
Other income (deductions)Other income (deductions)7,838  1,592  (12,698) 7,538  (10,719) (3,005) Other income (deductions)550 (20,536)14,496 (16,965)
Total other income and (expenses)Total other income and (expenses)(16,153) (21,753) (61,747) (38,906) (108,350) (91,785) Total other income and (expenses)(21,616)(45,594)(83,760)(113,950)
Income before income taxesIncome before income taxes10,948  2,316  123,169  133,876  187,437  196,962  Income before income taxes148,775 112,221 231,427 178,805 
Income tax expense (benefit)(994) (1,053) 27,628  27,118  35,483  44,333  
Income tax expenseIncome tax expense30,060 28,622 37,193 35,424 
Net incomeNet income$11,942  $3,369  $95,541  $106,758  $151,954  $152,629  Net income$118,715 $83,599 $194,234 $143,381 
The accompanying notes are an integral part of these statements.

9

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Thousands of dollars)
(Unaudited)
Three Months Ended
June 30,
Six Months Ended
June 30,
Twelve Months Ended
June 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
202020192020201920202019 2021202020212020
Net incomeNet income$11,942  $3,369  $95,541  $106,758  $151,954  $152,629  Net income$118,715 $83,599 $194,234 $143,381 
Other comprehensive income (loss), net of taxOther comprehensive income (loss), net of taxOther comprehensive income (loss), net of tax
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Net actuarial lossNet actuarial loss—  —  —  —  (54,026) (15,524) Net actuarial loss(43,730)(54,026)
Amortization of prior service costAmortization of prior service cost220  242  440  483  923  990  Amortization of prior service cost182 220 840 945 
Prior service costPrior service cost—  —  —  —  (1,426) —  Prior service cost(1,426)
Amortization of net actuarial lossAmortization of net actuarial loss7,187  4,441  14,375  8,883  23,258  21,658  Amortization of net actuarial loss8,474 7,188 30,037 20,513 
Regulatory adjustmentRegulatory adjustment(6,380) (4,064) (12,760) (8,128) 23,445  (2,895) Regulatory adjustment(7,277)(6,380)4,753 25,760 
Net defined benefit pension plansNet defined benefit pension plans1,027  619  2,055  1,238  (7,826) 4,229  Net defined benefit pension plans1,379 1,028 (8,100)(8,234)
Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):
Amounts reclassified into net incomeAmounts reclassified into net income635  636  1,271  1,271  2,541  2,541  Amounts reclassified into net income413 636 2,244 2,542 
Net forward-starting interest rate swapsNet forward-starting interest rate swaps635  636  1,271  1,271  2,541  2,541  Net forward-starting interest rate swaps413 636 2,244 2,542 
Total other comprehensive income (loss), net of taxTotal other comprehensive income (loss), net of tax1,662  1,255  3,326  2,509  (5,285) 6,770  Total other comprehensive income (loss), net of tax1,792 1,664 (5,856)(5,692)
Comprehensive incomeComprehensive income$13,604  $4,624  $98,867  $109,267  $146,669  $159,399  Comprehensive income$120,507 $85,263 $188,378 $137,689 
The accompanying notes are an integral part of these statements.

10

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Thousands of dollars)
(Unaudited)
Six Months Ended
June 30,
Twelve Months Ended
June 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
2020201920202019 2021202020212020
CASH FLOW FROM OPERATING ACTIVITIES:CASH FLOW FROM OPERATING ACTIVITIES:CASH FLOW FROM OPERATING ACTIVITIES:
Net incomeNet income$95,541  $106,758  $151,954  $152,629  Net income$118,715 $83,599 $194,234 $143,381 
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments to reconcile net income to net cash provided by (used in) operating activities:Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortizationDepreciation and amortization117,923  106,955  226,588  201,146  Depreciation and amortization68,698 64,725 239,268 222,733 
Deferred income taxesDeferred income taxes18,186  28,183  23,684  43,811  Deferred income taxes14,952 7,707 52,242 15,118 
Changes in current assets and liabilities:Changes in current assets and liabilities:Changes in current assets and liabilities:
Accounts receivable, net of allowanceAccounts receivable, net of allowance57,047  46,626  (316) (9,787) Accounts receivable, net of allowance(27,631)1,975 (25,673)21,652 
Accrued utility revenueAccrued utility revenue43,300  42,300  (900) (700) Accrued utility revenue31,900 31,000 (2,400)(1,100)
Deferred purchased gas costsDeferred purchased gas costs53,595  (43,341) 38,445  5,128  Deferred purchased gas costs(291,469)10,155 (265,385)19,527 
Accounts payableAccounts payable(53,712) (74,787) (6,398) 716  Accounts payable(33,076)(41,899)18,441 (29,798)
Accrued taxesAccrued taxes17,746  (52) 26,693  (6,008) Accrued taxes41,851 53,335 (13,011)33,526 
Other current assets and liabilitiesOther current assets and liabilities71,512  74,589  86,094  7,511  Other current assets and liabilities41,018 99,257 (9,694)106,803 
Changes in undistributed stock compensationChanges in undistributed stock compensation3,494  3,760  4,880  5,895  Changes in undistributed stock compensation2,908 2,496 5,706 5,045 
Equity AFUDCEquity AFUDC(2,181) (1,967) (4,375) (5,008) Equity AFUDC(981)(1,061)(4,644)(4,262)
Changes in deferred charges and other assetsChanges in deferred charges and other assets(13,689) (20,336) (25,120) (21,895) Changes in deferred charges and other assets(13,535)3,658 (61,484)(9,871)
Changes in other liabilities and deferred creditsChanges in other liabilities and deferred credits(55,173) (6,836) (61,698) 25,356  Changes in other liabilities and deferred credits(48,782)(55,910)(58,008)(66,294)
Net cash provided by operating activities353,589  261,852  459,531  398,794  
Net cash provided by (used in) operating activitiesNet cash provided by (used in) operating activities(95,432)259,037 69,592 456,460 
CASH FLOW FROM INVESTING ACTIVITIES:CASH FLOW FROM INVESTING ACTIVITIES:CASH FLOW FROM INVESTING ACTIVITIES:
Construction expenditures and property additionsConstruction expenditures and property additions(354,501) (365,251) (767,998) (762,121) Construction expenditures and property additions(128,544)(173,353)(647,407)(788,465)
Changes in customer advancesChanges in customer advances4,098  9,483  13,616  14,788  Changes in customer advances4,285 5,433 12,885 21,356 
OtherOther100  (49) 54  (813) Other(121)(31)681 (48)
Net cash used in investing activitiesNet cash used in investing activities(350,303) (355,817) (754,328) (748,146) Net cash used in investing activities(124,380)(167,951)(633,841)(767,157)
CASH FLOW FROM FINANCING ACTIVITIES:CASH FLOW FROM FINANCING ACTIVITIES:CASH FLOW FROM FINANCING ACTIVITIES:
Contributions from parentContributions from parent99,500  102,092  157,344  159,045  Contributions from parent45,984 50,000 173,906 187,094 
Dividends paidDividends paid(51,100) (46,300) (100,700) (90,300) Dividends paid(26,000)(25,200)(105,300)(97,600)
Issuance of long-term debt, netIssuance of long-term debt, net446,508  297,222  446,508  297,222  Issuance of long-term debt, net446,508 297,222 
Retirement of long-term debtRetirement of long-term debt(125,000)
Change in credit facility and commercial paper(150,000) (104,000) (46,000) (2,000) 
Change in short-term debtChange in short-term debt(194,000) (152,000) —  —  Change in short-term debt210,000 (97,000)170,000 (91,000)
Withholding remittance - share-based compensationWithholding remittance - share-based compensation(2,736) (1,856) (2,738) (2,111) Withholding remittance - share-based compensation(1,242)(2,736)(1,242)(2,756)
OtherOther(1,163) (712) (1,276) (961) Other(205)(115)(1,352)(887)
Net cash provided by financing activities147,009  94,446  453,138  360,895  
Net cash provided by (used in) financing activitiesNet cash provided by (used in) financing activities228,537 (75,051)557,520 292,073 
Change in cash and cash equivalentsChange in cash and cash equivalents150,295  481  158,341  11,543  Change in cash and cash equivalents8,725 16,035 (6,729)(18,624)
Cash and cash equivalents at beginning of periodCash and cash equivalents at beginning of period40,489  31,962  32,443  20,900  Cash and cash equivalents at beginning of period41,070 40,489 56,524 75,148 
Cash and cash equivalents at end of periodCash and cash equivalents at end of period$190,784  $32,443  $190,784  $32,443  Cash and cash equivalents at end of period$49,795 $56,524 $49,795 $56,524 
SUPPLEMENTAL INFORMATION:SUPPLEMENTAL INFORMATION:SUPPLEMENTAL INFORMATION:
Interest paid, net of amounts capitalizedInterest paid, net of amounts capitalized$46,576  $42,853  $92,381  $83,206  Interest paid, net of amounts capitalized$6,952 $10,204 $93,474 $87,277 
Income taxes paid (received), netIncome taxes paid (received), net$(22,962) $(22) $(22,262) $(16,764) Income taxes paid (received), net$$(22,962)$3,359 $700 
The accompanying notes are an integral part of these statements.

11

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
(In thousands)
(Unaudited)
Three Months Ended
June 30,
Six Months Ended
June 30,
Three Months Ended
March 31,
202020192020201920212020
Common stock sharesCommon stock sharesCommon stock shares
Beginning and ending balances47,482  47,482  47,482  47,482  Beginning and ending balances47,482 47,482 
Common stock amountCommon stock amountCommon stock amount
Beginning and ending balances$49,112  $49,112  $49,112  $49,112  Beginning and ending balances$49,112 $49,112 
Additional paid-in capitalAdditional paid-in capitalAdditional paid-in capital
Beginning balances1,279,208  1,089,002  1,229,083  1,065,242  Beginning balances1,410,345 1,229,083 
Share-based compensation1,135  1,297  1,260  2,215  Share-based compensation2,015 125 
Contributions from Southwest Gas Holdings, Inc.49,500  79,250  99,500  102,092  Contributions from Southwest Gas Holdings, Inc.45,984 50,000 
Ending balances1,329,843  1,169,549  1,329,843  1,169,549  Ending balances1,458,344 1,279,208 
Accumulated other comprehensive lossAccumulated other comprehensive lossAccumulated other comprehensive loss
Beginning balances(53,487) (47,795) (55,151) (49,049) Beginning balances(61,135)(55,151)
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax1,027  619  2,055  1,238  Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax1,379 1,028 
FSIRS amounts reclassified to net income, net of tax635  636  1,271  1,271  FSIRS amounts reclassified to net income, net of tax413 636 
Ending balances(59,343)(53,487)
Ending balances(51,825) (46,540) (51,825) (46,540) 
Retained earningsRetained earningsRetained earnings
Beginning balances839,443  797,584  782,108  717,155  Beginning balances835,146 782,108 
Net income11,942  3,369  95,541  106,758  Net income118,715 83,599 
Share-based compensation(138) (152) (502) (312) Share-based compensation(350)(364)
Dividends declared to Southwest Gas Holdings, Inc.(26,400) (24,700) (52,300) (47,500) Dividends declared to Southwest Gas Holdings, Inc.(27,500)(25,900)
Ending balances824,847  776,101  824,847  776,101  Ending balances926,011 839,443 
Total Southwest Gas Corporation equity ending balancesTotal Southwest Gas Corporation equity ending balances$2,151,977  $1,948,222  $2,151,977  $1,948,222  Total Southwest Gas Corporation equity ending balances$2,374,124 $2,114,276 
The accompanying notes are an integral part of these statements.
12

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Note 1 – Background, Organization, and Summary of Significant Accounting Policies
Nature of Operations. Southwest Gas Holdings, Inc. is a holding company, owning all of the shares of common stock of Southwest Gas Corporation (“Southwest” or the “natural gas operations” segment) and all of the shares of common stock of Centuri Group, Inc. (“Centuri,” or the “utility infrastructure services” segment).
Southwest is engaged in the business of purchasing, distributing, and transporting natural gas for customers in portions of Arizona, Nevada, and California. Public utility rates, practices, facilities, and service territories of Southwest are subject to regulatory oversight. The timing and amount of rate relief can materially impact results of operations. Natural gas purchases and the timing of related recoveries can materially impact liquidity. Results for the natural gas operations segment are higher during winter periods due to the seasonality incorporated in its regulatory rate structures.
Centuri is a comprehensive utility infrastructure services enterprise dedicated to delivering a diverse array of solutions to North America’s gas and electric providers. Centuri derives revenue primarily from installation, replacement, repair, and maintenance of energy distribution systems. Centuri operations are generally conducted under the business names of NPL Construction Co. (“NPL”), NPL Canada Ltd. (“NPL Canada”), New England Utility Constructors, Inc. (“Neuco”), and Linetec Services, LLC (“Linetec”). Utility infrastructure services activity is seasonal in most of Centuri’s operating areas. Peak periods are the summer and fall months in colder climate areas, such as the northeastern and midwestern United States (“U.S.”) and in Canada. In warmer climate areas, such as the southwestern and southeastern U.S., utility infrastructure services activity continues year round.
Basis of Presentation. The condensed consolidated financial statements of Southwest Gas Holdings, Inc. and subsidiaries (the “Company”) and Southwest included herein have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The year-end condensed balance sheet data was derived from audited financial statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted pursuant to such rules and regulations. No substantive change has occurred with regard to the Company’s business segments on the whole.
The preparation of the condensed consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, all adjustments, consisting of normal recurring items and estimates necessary for a fair depiction of results for the interim periods, have been made. Globally,In association with the novel Coronavirus (“COVID-19”) pandemic has created volatility, uncertainty,environment, utility operations, and economic disruption. Utility operationsto a large extent, utility infrastructure services, have been deemed “essential services” and utility infrastructure services have, to a large extent, been similarly characterized by government officials.services.” Management has considered the impact of the pandemic and adjusted certain estimates, where relevant, used in the preparation of the condensed consolidated financial statements.
These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the 20192020 Annual Report to Stockholders, which is incorporated by reference into the 20192020 Form 10-K.
Fair Value Measurements. Certain assets and liabilities are reported at fair value, which is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.
U.S. GAAP states that a fair value measurement should be based on the assumptions that market participants would use in pricing the asset or liability and establishes a fair value hierarchy that ranks the inputs used to measure fair value by their reliability. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to fair values derived from unobservable inputs (Level 3 measurements). Financial assets and liabilities are categorized in their entirety based on the lowest level of input that is significant to the fair value measurement. The three levels of the fair value hierarchy are as follows:
Level 1 – quoted prices (unadjusted) in active markets for identical assets or liabilities that a company has the ability to access at the measurement date.
Level 2 – inputs other than quoted prices included within Level 1 that are observable for similar assets or liabilities, either directly or indirectly.
Level 3 – unobservable inputs for the asset or liability. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date.
13

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

The Company primarily used quoted market prices and other observable market pricing information in valuing cash and cash equivalents, derivatives, long-term debt outstanding, and assets of the qualified pension plan and postretirement benefit plans required to be recorded and/or disclosed at fair value.
Other Property and Investments. Other property and investments on the Condensed Consolidated Balance Sheets includes:
(Thousands of dollars)(Thousands of dollars)June 30, 2020December 31, 2019(Thousands of dollars)March 31, 2021December 31, 2020
Southwest Gas Corporation:Southwest Gas Corporation:Southwest Gas Corporation:
Net cash surrender value of COLI policiesNet cash surrender value of COLI policies$128,659  $132,072  Net cash surrender value of COLI policies$143,618 $140,874 
Other propertyOther property1,975  1,715  Other property2,720 2,737 
Total Southwest Gas CorporationTotal Southwest Gas Corporation130,634  133,787  Total Southwest Gas Corporation146,338 143,611 
Centuri property, equipment, and intangiblesCenturi property, equipment, and intangibles1,041,528  983,905  Centuri property, equipment, and intangibles1,106,855 1,089,414 
Centuri accumulated provision for depreciation and amortizationCenturi accumulated provision for depreciation and amortization(384,108) (352,333) Centuri accumulated provision for depreciation and amortization(439,126)(422,741)
Other property21,057  18,814  
Other property and investmentsOther property and investments28,605 23,961 
Total Southwest Gas Holdings, Inc.Total Southwest Gas Holdings, Inc.$809,111  $784,173  Total Southwest Gas Holdings, Inc.$842,672 $834,245 
Included in the table above are the net cash surrender values of company-owned life insurance (“COLI”) policies. These life insurance policies on members of management and other key employees are used by Southwest to indemnify itself against the loss of talent, expertise, and knowledge, as well as to provide indirect funding for certain nonqualified benefit plans. Balances reflect impacts of equity and fixed-income securities underlying the cash surrender values at each reporting date; however, ultimately, only the insurance proceeds are ever actually received, due to management’s intent to hold the policies to maturity.
Cash and Cash Equivalents.  For purposes of reporting consolidated cash flows, cash and cash equivalents include cash on hand and financial instruments with original maturities of three months or less. Such investments are carried at cost, which approximates market value. Cash and cash equivalents of Southwest and the Company include money market fund investments totaling approximately $40,000 for both entitieseach entity at June 30, 2020,March 31, 2021 and $23.5 million and $26.7 million, for each, respectively, at December 31, 2019,2020, respectively, which fall within Level 2 of the fair value hierarchy, due to the asset valuation methods used by money market funds.
Typical non-cash investing activities for Southwest include customer advances applied as contributions toward utility construction activity, and capital expenditures that were not paid as of period-end reporting dates, but rather included in accounts payable,payable. Typical activities that represent aspects of both non-cash investing and right-of usenon-cash financing activities relate to right-of-use assets obtained in exchange for lease liabilities which are non-cash investing(including, at times, lease terminations and financing activities.modifications). Amounts related to suchthese collective activities were immaterial for the periods presented herein.
Intercompany Transactions. Centuri recognizes revenues generated from contracts with Southwest (see Note 7 – Segment Information). The accounts receivable balance, revenues, and associated profits are included in the condensed consolidated financial statements of the Company and Southwest and were not eliminated during consolidation in accordance with accounting treatment for rate-regulated entities.
Accounts Receivable, net of allowances. Business activity with respect to natural gas utility operations is conducted with customers located within the 3-state region of Arizona, Nevada, and California. Southwest’s Accountsaccounts receivable are short-term in nature with no billing due dates customarily extending beyond one month, with customers’ credit worthiness assessed upon account creation by evaluation of other utility service and related payment history. Although Southwest seeks to minimize its credit risk related to utility operations by requiring security deposits from new customers, imposing late fees, and actively pursuing collection on overdue accounts, some accounts are ultimately not collected. Customer accounts are subject to collection procedures that vary by jurisdiction (late fee assessment, noticing requirements for disconnection of service, and procedures for actual disconnection and/or reestablishment of service). After disconnection of service, accounts are customarily written off approximately two months after inactivation. Dependent upon the jurisdiction, reestablishment of service requires both payment of previously unpaid balances and additional deposit requirements. Provisions for uncollectible accounts are recorded monthly based on experience, consideration of current and expected future conditions, customer and rate composition, and write-off processes. They are included in the ratemaking process as a cost of service. The Nevada jurisdictions have a regulatory mechanism associated with the gas cost-related portion of uncollectible accounts. Such amounts are deferred and collected through a surcharge in the ratemaking process. Due to the continuedongoing COVID-19 pandemic, and as utility service is an essential service toSouthwest continued the residents in the states in which Southwest operates,moratorium initiated in March 2020 Southwest implemented a temporary moratorium on disconnection of natural gas service for non-payment, and also ceased chargingbut recommenced assessing late fees until further notice. Whilein Nevada and Arizona in April 2021, with late fees in California expected to recommence in the moratorium continues to be in place,latter half of 2021. Southwest is actively working with customers experiencing financial hardship by means of flexible payment options. Management continues to monitor expected credit losses in light of the evolving financial impact of COVID-19. The allowance as of June 30, 2020March 31, 2021 reflects the expected impact of COVID-19from the pandemic on balances as of
14

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

that date, including consideration of customers’ ability to pay currently and once the moratorium on disconnections is lifted. The allowance was not materially adjusted as a result of the pandemic.
Utility infrastructure services contracts receivable are recorded at face amounts less an allowance for doubtful accounts. Centuri’s customers are generally investment-grade gas and electric utility companies for which Centuri has historically recognized an insignificant amount of write-offs. Centuri’s trade accounts receivable balances carry standard payment terms of up to 60 days. Centuri maintains an allowance that is an estimate based on historical collection experience, current and forward-looking estimated economic and market conditions, and a review of the current status of each customer's trade accounts receivable balance. Account balances are monitored at least monthly, and are charged off against the allowance when management determines it is probable the balance will not be recovered. Centuri has not been significantly impacted, nor does it anticipate it will experience significant difficulty in collecting amounts due, as a result of the current environment surrounding COVID-19 given the nature of its customers.
Activity between periods in the allowance for uncollectibles and the balances as of the periods presented within the Company’s and Southwest’s financial statements were not material to the condensed consolidated financial statements.statements overall.
14

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021
Income Taxes.
Deferred Purchased Gas Costs. The various regulatory commissions have established procedures to enable Southwest to adjust its billing rates for changes in the cost of natural gas purchased. The difference between the current cost of gas purchased and the cost of gas recovered in billed rates is deferred. Generally, these deferred amounts are recovered or refunded within one year.
In mid-February 2021, the central U.S. (from south Texas to North Dakota and the eastern Rocky Mountains) experienced extreme cold temperatures, which increased natural gas demand and caused supply issues due to wellhead freeze-offs, power outages, or other adverse operating conditions upstream of Southwest’s distribution systems. These conditions caused daily natural gas prices to reach unprecedented levels. During this time, Southwest secured natural gas supplies, albeit at substantially higher prices, maintaining service to its customers. The incremental cost for these supplies was approximately $250 million, funded using a 364-day $250 million Bank Term Loan executed in March 2021 (see On March 27, 2020,Note 5 – Debt).The incremental gas costs are expected to be collected from customers through the Coronavirus Aid, Relief,purchased gas adjustment (“PGA”) mechanisms.
Following the extreme weather event, an interstate transmission pipeline company billed Southwest, in addition to customary transmission costs, $65 million for pipeline imbalance charges, allegedly incurred during the period of the pipeline’s critical operation condition. However, Southwest has formally disputed these imbalance charges and Economic Security (“CARES”) Act was enacted. The CARES Act provides a number of tax provisions and stimulus measures, including changes to prior and future limitations on interest deductions, the ability to accelerate refund of Alternative Minimum Tax credits, elective deferment of payment relatedbelieves that no amounts are due to the employer portionpipeline. Consequently, Southwest has not recognized this charge. Pipeline transmission costs, including periodic imbalance charges, are components of Social Security taxes,the cost of gas recovered from customers through the PGA and the creation of certain refundable employee retention credits, among other things. Management does not anticipate the impacts related to the CARES Act to have a material effect on the Company’s or Southwest’s results of operations, financial position, or liquidity.similar mechanisms.
Prepaid and other current assets. Prepaid and other current assets includes gas pipe materials and operating supplies of $57$47 million at both June 30, 2020March 31, 2021 and$50 million at December 31, 20192020 (carried at weighted average cost), in addition to $33 million at December 31, 2019 related to a regulatory asset associated with the Arizona decoupling mechanism (an alternative revenue program), with no corresponding asset balance at June 30, 2020..
Goodwill. Goodwill is assessed as of October 1st each year for impairment, or more frequently, if circumstances indicate an impairment to the carrying value of goodwill may have occurred. Management of the Company and Southwest considered its reporting units and segments and determined that its segments and reporting units remain consistent between periods presented below, and that no change was necessary with regard to the level at which goodwill is assessed for impairment. Since December 31, 2019,2020, management also qualitatively assessed whether events during the first sixthree months of 20202021 may have resulted in conditions whereby the carrying value of goodwill was higher than its fair value, which if the case, could be an indication of a permanent impairment. Through this assessment, no such condition was believed to have existed and therefore, 0 impairment was deemed to have occurred. Goodwill on Southwest’s and the Company’s Condensed Consolidated Balance Sheets includes:
(Thousands of dollars)(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
Total Company(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
Total Company
December 31, 2019$10,095  $332,928  $343,023  
December 31, 2020December 31, 2020$10,095 $335,089 $345,184 
Foreign currency translation adjustmentForeign currency translation adjustment—  (5,045) (5,045) Foreign currency translation adjustment1,369 1,369 
June 30, 2020$10,095  $327,883  $337,978  
March 31, 2021March 31, 2021$10,095 $336,458 $346,553 

Other Current Liabilities. Management recognizes in its balance sheets various liabilities that are expected to be settled through future cash payment within the next twelve months, including amounts payable under regulatory mechanisms, customary accrued expenses for employee compensation and benefits, declared but unpaid dividends, and miscellaneous other accrued liabilities. Other current liabilities for Southwestthe Company includes $26.4$34.5 million and $32.6 million of dividends declared, as well as $37 million and $25.2 million of dividends declared by Southwest Gas Corporation, but not yet paid to Southwest Gas Holdings, Inc.accrued property taxes, as of June 30, 2020March 31, 2021 and December 31, 2019,2020, respectively.

15

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Other Income (Deductions). The following table provides the composition of significant items included in Other income (deductions) in the Condensed Consolidated Statements of Income:
Three Months Ended June 30,Six Months Ended
June 30,
Twelve Months Ended June 30, Three Months Ended March 31,Twelve Months Ended
March 31,
(Thousands of dollars)(Thousands of dollars)202020192020201920202019(Thousands of dollars)2021202020212020
Southwest Gas Corporation - natural gas operations segment:Southwest Gas Corporation - natural gas operations segment:Southwest Gas Corporation - natural gas operations segment:
Change in COLI policiesChange in COLI policies$12,000  $3,400  $(3,500) $11,000  $2,900  $6,500  Change in COLI policies$2,700 $(15,500)$27,400 $(5,700)
Interest incomeInterest income414  1,822  1,802  3,419  4,739  6,644  Interest income716 1,388 3,343 6,147 
Equity AFUDCEquity AFUDC1,120  1,007  2,181  1,967  4,375  5,008  Equity AFUDC981 1,061 4,644 4,262 
Other components of net periodic benefit costOther components of net periodic benefit cost(5,006) (3,765) (10,011) (7,530) (17,540) (18,060) Other components of net periodic benefit cost(3,505)(5,005)(18,522)(16,299)
Miscellaneous income and (expense)Miscellaneous income and (expense)(690) (872) (3,170) (1,318) (5,193) (3,097) Miscellaneous income and (expense)(342)(2,480)(2,369)(5,375)
Southwest Gas Corporation - total other income (deductions)Southwest Gas Corporation - total other income (deductions)7,838  1,592  (12,698) 7,538  (10,719) (3,005) Southwest Gas Corporation - total other income (deductions)550 (20,536)14,496 (16,965)
Utility infrastructure services segment:Utility infrastructure services segment:Utility infrastructure services segment:
Interest income—  —  —  —  —  86  
Foreign transaction gain (loss)Foreign transaction gain (loss)(6) 21  (16) 552  (22) (19) Foreign transaction gain (loss)(3)(10)(9)
Miscellaneous income and (expense)Miscellaneous income and (expense)93  (498) (139) (154) (65) 462  Miscellaneous income and (expense)(99)(232)(58)(656)
Centuri - total other income (deductions)Centuri - total other income (deductions)87  (477) (155) 398  (87) 529  Centuri - total other income (deductions)(102)(242)(67)(651)
Corporate and administrativeCorporate and administrative—  31   49  61  75  Corporate and administrative92 
Consolidated Southwest Gas Holdings, Inc. - total other income (deductions)Consolidated Southwest Gas Holdings, Inc. - total other income (deductions)$7,925  $1,146  $(12,845) $7,985  $(10,745) $(2,401) Consolidated Southwest Gas Holdings, Inc. - total other income (deductions)$448 $(20,770)$14,429 $(17,524)
Included in the table above is the change in cash surrender values of COLI policies (including net death benefits recognized). Current tax regulations provide for tax-free treatment of life insurance (death benefit) proceeds. Therefore, changes in the cash surrender values of COLI policies, as they progress towards the ultimate death benefits, are also recorded without tax consequences. Refer to Other Property and Investments above and also to Note 2 – Components of Net Periodic Benefit Cost.
Derivatives. In managing its natural gas supply portfolios, Southwest has historically entered into fixed- and variable-price contracts, which qualify as derivatives. Additionally, Southwest has utilized fixed-for-floating swap contracts (“Swaps”) to supplement its fixed-price contracts. The fixed-price contracts, firm commitments to purchase a fixed amount of gas in the future at a fixed price, qualify for the normal purchases and normal sales exception that is allowed for contracts that are probable of delivery in the normal course of business, and are exempt from fair value reporting. The variable-price contracts qualify as derivative instruments; however, because the contract prices are the prevailing prices at the future transaction dates, the contracts have no determinable fair value. The Swap contract prices are determined at the beginning of each month to reflect that month’s published first of month index price and are recorded at fair value (Level 2). Southwest does not utilize derivative financial instruments for speculative purposes, nor does it have trading operations.
Management does not currently anticipate entering into new Swaps in the near term; the longest maturity date of the Swaps as of June 30, 2020 is October 2020.
Master netting arrangements exist with each counterparty that provide for the net settlement of all contracts through a single payment. Management has elected to reflect the net amounts in its balance sheets, which were immaterial at June 30, 2020.
Previously, Southwest entered into forward-starting interest rate swaps (“FSIRS”), the settled positions for which are immaterial and continue to be amortized from Accumulated other comprehensive income (loss) into interest expense.
Redeemable Noncontrolling Interest. In connection with the acquisition of Linetec in November 2018, the previous owner retained a 20% equity interest in Linetec, the reduction of which is subject to certain rights based on the passage of time or upon the occurrence of certain triggering events.

16

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

Significant changes in the value of the redeemable noncontrolling interest, above a floor established at the acquisition date, are recognized as they occur, and the carrying value is adjusted as necessary at each reporting date. The fair value is estimated using a market approach that utilizes certain financial metrics from guideline public companies of similar industry and operating characteristics. However, the carrying value was greater thanBased on the fair value as of June 30, 2020, and no previous upwardmodel employed, the estimated redemption value adjustments were made followingof the acquisition date. SEC guidance indicates that aredeemable noncontrolling interest increased by approximately $38 million during the first quarter of 2021. Adjustment to the redemption value adjustment wouldalso impacts retained earnings, as reflected in the Company’s Condensed Consolidated Statement of Equity, but does not be made under these circumstances.impact net income. The following depicts the change to the balance of the redeemable noncontrolling interest:
(Thousands of dollars):Redeemable Noncontrolling Interest
Balance, December 31, 20192020$84,542165,716 
Net income attributable to redeemable noncontrolling interest2,3791,552 
 Redemption value adjustment38,018 
Balance, June 30, 2020March 31, 2021$86,921 205,286 

16

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

Earnings Per Share. Basic earnings per share (“EPS”) in each period of this report were calculated by dividing net income attributable to Southwest Gas Holdings, Inc. by the weighted-average number of shares during those periods. Diluted EPS includes additional weighted-average common stock equivalents (performance shares and restricted stock units). Unless otherwise noted, the term “Earnings Per Share” refers to Basic EPS. A reconciliation of the denominator used in the Basic and Diluted EPS calculations is shown in the following table:
Three Months Ended
June 30,
Six Months Ended
June 30,
Twelve Months Ended
June 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
(In thousands)(In thousands)202020192020201920202019(In thousands)2021202020212020
Average basic shares55,462  53,935  55,386  53,654  55,105  51,914  
Weighted average basic sharesWeighted average basic shares57,600 55,310 56,564 54,726 
Effect of dilutive securities:Effect of dilutive securities:Effect of dilutive securities:
Management Incentive Plan sharesManagement Incentive Plan shares—  11  —  11   18  Management Incentive Plan shares
Restricted stock units (1)Restricted stock units (1)70  57  62  51  60  45  Restricted stock units (1)79 53 85 57 
Average diluted shares55,532  54,003  55,448  53,716  55,171  51,977  
Weighted average diluted sharesWeighted average diluted shares57,679 55,363 56,649 54,792 
(1) The number of securities granted included 63,000included 75,000 and 49,00050,000 performance shares during the three months ending June 30,March 31, 2021 and 2020, and 2019, 57,00076,000 and 45,000 performance shares during the six months ending June 30, 2020 and 2019, and 51,000 and 36,00048,000 performance shares during the twelve months ending June 30,March 31, 2021 and 2020, and 2019, respectively, the total of which waswas derived by assuming that target performance will be achievedachieved during the relevant performance period.
Recent Accounting Standards Updates.
Accounting pronouncements adopted in 2020:2021:
In June 2016,December 2019, the Financial Accounting Standards Board (“FASB”(the “FASB”) issued ASU 2016-13 update “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The update requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The Company and Southwest adopted the update in the first quarter of 2020, and concluded the impact was not material to the condensed consolidated financial statements of the Company or Southwest. See Accounts receivable, net of allowances above.
In January 2017, the FASB issued ASU 2017-04 “Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” Under the update, an entity will apply a one-step quantitative test as opposed to a two-step test as previously required, and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The new guidance does not amend the optional qualitative assessment. The Company and Southwest adopted the update in the first quarter of 2020 and will apply the update prospectively in any future goodwill impairment tests.
In August 2018, the FASB issued ASU 2018-15 “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” The update generally aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement (that is a service contract) with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software, with the exception that such costs are to be included in the same line item in the balance sheet that a prepayment of the fees associated with the arrangement would be presented. Once capitalized, the update requires the entity to expense the amount capitalized over the term of the hosting arrangement, including reasonably certain renewal periods. The Company and
17

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

Southwest adopted the update in the first quarter of 2020 using the prospective transition method. The Company and Southwest have no material implementation costs related to cloud computing arrangements.
Recently issued accounting pronouncements that will be effective after 2020:
In December 2019, the FASB issued ASU 2019-12 “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” The update simplifies the accounting for income taxes by removing certain exceptions to the general principles, as well as improving consistent application in Topic 740 by clarifying and amending existing guidance. The Company and Southwest adopted the update is effective for fiscal years beginning after December 15,in the first quarter of 2021, and interim periods within fiscal years beginning after December 15, 2022. Early adoption is permitted for periods forthe impact of which financial statements havewas not yet been made available for issuance. Management is evaluatingmaterial to the impacts this update might have on the Company’s and Southwest’scondensed consolidated financial statements and disclosures.of the Company or Southwest.
Recently issued accounting pronouncements that will be effective after 2021:
In March 2020, the FASB issued ASU 2020-04 “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” The update provides optional guidance for a limited time to ease the potential burden in accounting for, or recognizing the effects of, reference rate reform on financial reporting.reporting, including when modifying a contract (during the eligibility period covered by the update to Topic 848) to replace a reference rate affected by such reform. The update applies only to contracts and hedging relationships that reference the London Interbank Offered Rate (“LIBOR”) or another reference rate expected to be discontinued due to reference rate reform. The expedientsguidance was eligible to be applied upon issuance on March 12, 2020, and exceptions provided by the amendments do not apply to contract modifications made or entered into aftercan generally be applied through December 31, 2022. Management is evaluatingwill monitor the impacts this update might have on the Company’s and Southwest’s consolidated financial statements and disclosures.disclosures, and will reflect such appropriately, in the event that the optional guidance is elected. See also LIBOR discussion in Note 5 – Debt.
In August 2020, the FASB issued ASU 2020-06 “Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging— Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity.” The update, amongst other amendments, improves the guidance related to the disclosures and earnings-per-share for convertible instruments and contracts in an entity’s own equity. The update is effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years; early adoption is permitted. Management is evaluating what impacts, if any, this update might have on the Company’s consolidated financial statements and disclosures.
1817

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Note 2 – Components of Net Periodic Benefit Cost
Southwest has a noncontributory qualified retirement plan with defined benefits covering substantially all employees and a separate unfunded supplemental retirement plan (“SERP”) which is limited to officers. Southwest also provides postretirement benefits other than pensions (“PBOP”) to its qualified retirees for health care, dental, and life insurance.
The service cost component of net periodic benefit costs included in the table below is a component of an overhead loading process associated with the cost of labor. The overhead process ultimately results in allocation of that portion of overall net periodic benefit costsservice cost to the same accounts to which productive labor is charged. As a result, service costs become components of various accounts, primarily operations and maintenance expense, net utility plant, and deferred charges and other assets for both the Company and Southwest. The other components of net periodic benefit cost are reflected in Other income (deductions) on the Condensed Consolidated Statements of Income of each entity.
Qualified Retirement Plan Qualified Retirement Plan
June 30, March 31,
Three MonthsSix MonthsTwelve Months Three MonthsTwelve Months
202020192020201920202019 2021202020212020
(Thousands of dollars)(Thousands of dollars)      (Thousands of dollars)    
Service costService cost$8,575  $6,466  $17,149  $12,932  $30,081  $27,209  Service cost$10,290 $8,574 $36,015 $27,972 
Interest costInterest cost11,389  12,251  22,777  24,503  47,280  46,590  Interest cost10,108 11,388 44,275 48,142 
Expected return on plan assetsExpected return on plan assets(16,324) (15,061) (32,648) (30,122) (62,770) (59,500) Expected return on plan assets(18,088)(16,324)(67,060)(61,507)
Amortization of net actuarial lossAmortization of net actuarial loss9,006  5,589  18,013  11,178  29,191  27,236  Amortization of net actuarial loss10,489 9,007 37,507 25,774 
Net periodic benefit costNet periodic benefit cost$12,646  $9,245  $25,291  $18,491  $43,782  $41,535  Net periodic benefit cost$12,799 $12,645 $50,737 $40,381 
SERP SERP
June 30, March 31,
Three MonthsSix MonthsTwelve Months Three MonthsTwelve Months
202020192020201920202019 2021202020212020
(Thousands of dollars)(Thousands of dollars)      (Thousands of dollars)    
Service costService cost$97  $67  $195  $133  $328  $256  Service cost$131 $98 $422 $298 
Interest costInterest cost402  440  803  880  1,683  1,709  Interest cost358 401 1,561 1,721 
Amortization of net actuarial lossAmortization of net actuarial loss451  255  902  510  1,412  1,261  Amortization of net actuarial loss660 451 2,014 1,216 
Net periodic benefit costNet periodic benefit cost$950  $762  $1,900  $1,523  $3,423  $3,226  Net periodic benefit cost$1,149 $950 $3,997 $3,235 
PBOP PBOP
June 30, March 31,
Three MonthsSix MonthsTwelve Months Three MonthsTwelve Months
202020192020201920202019 2021202020212020
(Thousands of dollars)(Thousands of dollars)      (Thousands of dollars)    
Service costService cost$395  $319  $791  $638  $1,429  $1,374  Service cost$423 $396 $1,608 $1,353 
Interest costInterest cost645  762  1,290  1,524  2,812  2,898  Interest cost548 645 2,485 2,929 
Expected return on plan assetsExpected return on plan assets(852) (789) (1,704) (1,578) (3,282) (3,436) Expected return on plan assets(810)(852)(3,366)(3,219)
Amortization of prior service costsAmortization of prior service costs289  318  578  635  1,214  1,302  Amortization of prior service costs240 289 1,106 1,243 
Net periodic benefit costNet periodic benefit cost$477  $610  $955  $1,219  $2,173  $2,138  Net periodic benefit cost$401 $478 $1,833 $2,306 

1918

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Note 3 – Revenue
The following information about the Company’s revenues is presented by segment. Southwest encompasses the natural gas operations segment and Centuri encompasses the utility infrastructure services segment.
Natural Gas Operations Segment:
Gas operating revenues on the Condensed Consolidated Statements of Income of both the Company and Southwest include revenue from contracts with customers, which is shown below, disaggregated by customer type, and various categories of revenue:
Three Months Ended
June 30,
Six Months Ended
June 30,
Twelve Months Ended June 30, Three Months Ended
March 31,
Twelve Months Ended March 31,
(Thousands of dollars)(Thousands of dollars)202020192020201920202019(Thousands of dollars)2021202020212020
ResidentialResidential$181,298  $164,873  $559,853  $582,101  $950,540  $958,008  Residential$403,143 $378,555 $983,108 $934,115 
Small commercialSmall commercial41,455  50,184  123,918  139,794  233,241  251,281  Small commercial81,398 82,463 220,476 241,970 
Large commercialLarge commercial9,979  11,123  22,646  25,085  46,496  49,703  Large commercial12,673 12,667 44,639 47,640 
Industrial/otherIndustrial/other6,499  5,413  13,201  11,891  23,384  23,379  Industrial/other13,770 6,702 33,310 22,298 
TransportationTransportation19,835  21,815  44,241  46,717  89,904  88,934  Transportation24,536 24,406 88,345 91,884 
Revenue from contracts with customersRevenue from contracts with customers259,066  253,408  763,859  805,588  1,343,565  1,371,305  Revenue from contracts with customers535,520 504,793 1,369,878 1,337,907 
Alternative revenue program revenues (deferrals)Alternative revenue program revenues (deferrals)4,111  3,392  346  (31,153) 6,387  (22,776) Alternative revenue program revenues (deferrals)(16,373)(3,765)(468)5,668 
Other revenues (1)Other revenues (1)(743) 1,911  1,056  4,953  4,860  18,595  Other revenues (1)2,785 1,799 280 7,514 
Total Gas operating revenuesTotal Gas operating revenues$262,434  $258,711  $765,261  $779,388  $1,354,812  $1,367,124  Total Gas operating revenues$521,932 $502,827 $1,369,690 $1,351,089 
(1) Amounts include late fees and other miscellaneous revenues, and may also include the impact of certain regulatory mechanisms, such as cost-of-service components in current customer rates that are expected to be returned to customers in future periods. Late fees and certain other fees were reduced, for the three- and twelve-month periods ended March 31, 2021, due to a moratorium on late fees and disconnection for nonpayment during the COVID-19 pandemic.
Utility Infrastructure Services Segment:
The following tables display Centuri’s revenue, reflected as Utility infrastructure services revenues on the Condensed Consolidated Statements of Income of the Company, representing revenue from contracts with customers disaggregated by service and contract types:
Three Months Ended
June 30,
Six Months Ended
June 30,
Twelve Months Ended June 30, Three Months Ended
March 31,
Twelve Months Ended March 31,
(Thousands of dollars)(Thousands of dollars)202020192020201920202019(Thousands of dollars)2021202020212020
Service Types:Service Types:Service Types:
Gas infrastructure servicesGas infrastructure services$330,157  $323,817  $547,866  $521,709  $1,265,131  $1,205,197  Gas infrastructure services$221,837 $217,709 $1,265,288 $1,258,790 
Electric power infrastructure servicesElectric power infrastructure services95,286  61,366  167,606  113,667  301,656  136,900  Electric power infrastructure services93,961 72,320 433,467 267,736 
OtherOther69,370  69,117  112,834  131,786  245,335  292,129  Other48,177 43,464 280,015 245,083 
Total Utility infrastructure services revenuesTotal Utility infrastructure services revenues$494,813  $454,300  $828,306  $767,162  $1,812,122  $1,634,226  Total Utility infrastructure services revenues$363,975 $333,493 $1,978,770 $1,771,609 
 Three Months Ended
June 30,
Six Months Ended
June 30,
Twelve Months Ended June 30,
(Thousands of dollars)202020192020201920202019
Contract Types:
Master services agreement$375,502  $375,860  $639,047  $611,515  $1,410,909  $1,229,388  
Bid contract119,311  78,440  189,259  155,647  401,213  404,838  
Total Utility infrastructure services revenues$494,813  $454,300  $828,306  $767,162  $1,812,122  $1,634,226  
Unit price contracts$365,253  $355,487  $608,389  $591,172  $1,397,473  $1,323,034  
Fixed price contracts36,011  4,426  63,556  42,965  133,515  107,697  
Time and materials contracts93,549  94,387  156,361  133,025  281,134  203,495  
Total Utility infrastructure services revenues$494,813  $454,300  $828,306  $767,162  $1,812,122  $1,634,226  

 Three Months Ended
March 31,
Twelve Months Ended March 31,
(Thousands of dollars)2021202020212020
Contract Types:
Master services agreement$293,680 $263,545 $1,520,144 $1,411,267 
Bid contract70,295 69,948 458,626 360,342 
Total Utility infrastructure services revenues$363,975 $333,493 $1,978,770 $1,771,609 
Unit price contracts$234,449 $243,136 $1,347,953 $1,387,706 
Fixed price contracts34,594 27,545 164,750 101,931 
Time and materials contracts94,932 62,812 466,067 281,972 
Total Utility infrastructure services revenues$363,975 $333,493 $1,978,770 $1,771,609 
2019

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

The following table provides information about contracts receivable and revenue earned on contracts in progress in excess of billings (contract asset), which are both included within Accounts receivable, net of allowances, as well as amounts billed in excess of revenue earned on contracts (contract liability), which are included in Other current liabilities as of June 30, 2020March 31, 2021 and December 31, 20192020 on the Company’s Condensed Consolidated Balance Sheets:
(Thousands of dollars)(Thousands of dollars)June 30, 2020December 31, 2019(Thousands of dollars)March 31, 2021December 31, 2020
Contracts receivable, netContracts receivable, net$240,917  $223,904  Contracts receivable, net$197,357 $278,316 
Revenue earned on contracts in progress in excess of billingsRevenue earned on contracts in progress in excess of billings145,414  99,399  Revenue earned on contracts in progress in excess of billings107,336 96,996 
Amounts billed in excess of revenue earned on contractsAmounts billed in excess of revenue earned on contracts6,633  4,525  Amounts billed in excess of revenue earned on contracts5,985 4,507 
The revenue earned on contracts in progress in excess of billings (contract asset) primarily relates to Centuri’s rights to consideration for work completed but not billed and/or approved for billing at the reporting date. These contract assets are transferred to contracts receivable when the rights become unconditional. The amounts billed in excess of revenue earned (contract liability) primarily relate to the advance consideration received from customers for which work has not yet been completed. The change in this contract liability balance from December 31, 20192020 to June 30, 2020March 31, 2021 is due to revenue recognized of $4.5 million ththatat was included in this item as of January 1, 2020,2021, after which time it became earned and the balance was reduced, and to increases due to cash received, net of revenue recognized during the period related to contracts that commenced during the period.
For contracts that have an original duration of one year or less, Centuri uses the practical expedient applicable to such contracts and does not consider/compute an interest component based on the time value of money. Further, because of the short duration of these contracts, Centuri has not disclosed the transaction price for the remaining performance obligations as of the end of each reporting period or when the Company expects to recognize the revenue.
As of June 30, 2020,March 31, 2021, Centuri had 2618 contracts with an original duration of more than one year. The aggregate amount of the transaction price allocated to the unsatisfied performance obligations of these contracts as of June 30, 2020March 31, 2021 was $60.148.7 million. Centuri expects to recognize the remaining performance obligationsobligations over approximately the next two years; however,however, the timing of that recognition is largely within the control of the customer, including when the necessary equipment and materials required to complete the work are provided by the customer.
Utility infrastructure services contracts receivable consists of the following:
(Thousands of dollars)(Thousands of dollars)June 30, 2020December 31, 2019(Thousands of dollars)March 31, 2021December 31, 2020
Billed on completed contracts and contracts in progressBilled on completed contracts and contracts in progress$235,971  $216,268  Billed on completed contracts and contracts in progress$193,042 $273,778 
Other receivablesOther receivables5,389  8,456  Other receivables5,789 6,692 
Contracts receivable, grossContracts receivable, gross241,360  224,724  Contracts receivable, gross198,831 280,470 
Allowance for doubtful accountsAllowance for doubtful accounts(443) (820) Allowance for doubtful accounts(1,474)(2,154)
Contracts receivable, netContracts receivable, net$240,917  $223,904  Contracts receivable, net$197,357 $278,316 

2120

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Note 4 – Common Stock
Only shares of the Company’s common stock are publicly traded on the New York Stock Exchange, under the ticker symbol “SWX.” Share-based compensation related to Southwest and Centuri is based on stock awards to be issued in shares of Southwest Gas Holdings, Inc.
On May 8, 2019, the Company filed with the SEC an automatic shelf registration statement on Form S-3 (File No. 333-231297), which became effective upon filing, for the offer and sale of up to $300 million of common stock from time to time in at-the-market offerings under the prospectus included therein and in accordance with the Sales Agency Agreement, dated May 8, 2019, between the Company and BNY Mellon Capital Markets, LLC (the “Equity Shelf Program”). The following table provides the activity under the Equity Shelf Program for the three-month and life-to-date periods ended June 30, 2020:March 31, 2021:
Three Months EndedLife-To-Date EndedThree Months EndedLife-To-Date Ended
June 30, 2020March 31, 2021
Gross proceedsGross proceeds$49,999,986  $174,337,234  Gross proceeds$46,448,484 $299,999,974 
Less: agent commissionsLess: agent commissions(499,999) (1,743,372) Less: agent commissions(464,485)(3,000,000)
Net proceedsNet proceeds$49,499,987  $172,593,862  Net proceeds$45,983,999 $296,999,974 
Number of shares soldNumber of shares sold720,212  2,199,157  Number of shares sold705,957 4,102,414 
Weighted average price per shareWeighted average price per share$69.42  $79.27  Weighted average price per share$65.80 $73.13 
As of June 30, 2020,During the quarter ended March 31, 2021, the Company had up to $125,662,766sold essentially all of the remaining common stock available for sale under the program. Net proceeds from the sale of shares of common stock under the Equity Shelf Program are intended for general corporate purposes, including the acquisition of property for the construction, completion, extension, or improvement of pipeline systems and facilities located in and around the communities served by Southwest.
On April 8, 2021, the Company entered into a Sales Agency Agreement between the Company and BNY Mellon Capital Markets, LLC and J.P. Morgan Securities LLC for the offer and sale of up to $500 million of common stock from time to time in a new at-the-market offering program. The shares will be issued pursuant to the Company’s automatic shelf registration statement on Form S-3 (File No. 333-251074), which became effective upon filing with the SEC on December 2, 2020.
During the sixthree months ended June 30, 2020,March 31, 2021, the Company issued approximately 96,00047,000 shares of common stock through the Restricted Stock/Unit Plan and ManagementOmnibus Incentive Plan.
Additionally, during the sixthree months ended June 30, 2020,March 31, 2021, the Company issued 86,00049,500 shares of common stock through the Dividend Reinvestment and Stock Purchase Plan, raising approximately $6 $3.1 million.
2221

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Note 5 – Debt
Long-Term Debt
Long-term debt is recognized in the Company’s and Southwest’s Condensed Consolidated Balance Sheets generally at the carrying value of the obligations outstanding. However, detailsDetails surrounding the fair value, as described in Note 1 – Background, Organization, and Summary of Significant Accounting Policies, and individual carrying values of instruments are discussed below or provided in the table that follows.
 March 31, 2021December 31, 2020
Carrying
Amount
Fair
Value
Carrying
Amount
Fair
Value
(Thousands of dollars)
Southwest Gas Corporation:
Debentures:
Notes, 6.1%, due 2041$125,000 $160,651 $125,000 $174,858 
Notes, 3.875%, due 2022250,000 256,693 250,000 258,825 
Notes, 4.875%, due 2043250,000 288,500 250,000 317,190 
Notes, 3.8%, due 2046300,000 306,261 300,000 347,046 
Notes, 3.7%, due 2028300,000 324,069 300,000 344,553 
Notes, 4.15%, due 2049300,000 324,183 300,000 370,278 
Notes, 2.2%, due 2030450,000 438,912 450,000 474,552 
8% Series, due 202675,000 95,894 75,000 99,723 
Medium-term notes, 7.78% series, due 202225,000 26,201 25,000 26,663 
Medium-term notes, 7.92% series, due 202725,000 32,138 25,000 33,802 
Medium-term notes, 6.76% series, due 20277,500 9,127 7,500 9,613 
Unamortized discount and debt issuance costs(17,501)(17,822)
2,089,999 2,089,678 
Revolving credit facility and commercial paper150,000 150,000 150,000 150,000 
Industrial development revenue bonds:
Variable-rate bonds:
Tax-exempt Series A, due 202850,000 50,000 50,000 50,000 
2003 Series A, due 203850,000 50,000 50,000 50,000 
2008 Series A, due 203850,000 50,000 50,000 50,000 
2009 Series A, due 203950,000 50,000 50,000 50,000 
Unamortized discount and debt issuance costs(1,411)(1,472)
198,589 198,528 
Less: current maturities(25,000)
Long-term debt, less current maturities - Southwest Gas Corporation$2,413,588 $2,438,206 
Centuri:
Centuri term loan facility$222,668 $225,269 $226,648 $230,824 
Unamortized debt issuance costs(750)(820)
221,918 225,828 
Centuri secured revolving credit facility26,163 26,180 26,626 26,645 
Centuri other debt obligations77,235 78,378 81,973 84,246 
Less: current maturities(42,334)(40,433)
Long-term debt, less current maturities - Centuri$282,982 $293,994 
Consolidated Southwest Gas Holdings, Inc.:
Southwest Gas Corporation long-term debt$2,438,588 $2,438,206 
Centuri long-term debt325,316 334,427 
Less: current maturities(67,334)(40,433)
Long-term debt, less current maturities - Southwest Gas Holdings, Inc.$2,696,570 $2,732,200 
22

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

The fair values of Southwest’s revolving credit facility (including commercial paper) and the variable-rate Industrial Development Revenue Bonds (“IDRBs”) approximate their carrying values. The fair values of theSouthwest's revolving credit facility and IDRBs are categorized as Level 1 based on the FASB’s fair value hierarchy, due to Southwest’s ability to access similar debt arrangements at measurement dates with comparable terms, including variable/market rates. Additionally, the borrowings by Southwest under its revolving credit facility are generally repaid quickly and the IDRBs have interest rates that reset frequently.
The fair values of Southwest’s debentures (which include senior and medium-term notes) were determined utilizing a market-based valuation approach, where fair values are determined based on evaluated pricing data, suchand as broker quotes and yields for similar securities adjusted for observable differences. Significant inputs used in the valuation generally include benchmark yield curves, credit ratings, and issuer spreads. The external credit rating, coupon rate, and maturity of each security are considered in the valuation, as applicable. The fair values of debenturessuch are categorized as Level 2. 
The Centuri2 in the hierarchy. Centuri's secured revolving credit and term loan facility and Centuri’s other debt obligations (not actively traded) are categorized as Level 3. Because Centuri’s debt is not publicly traded,3; fair values for its secured revolving credit and term loan facility and other debt obligations were based on a conventional discounted cash flow methodology utilizing current market pricing yield curves, across Centuri’s debt maturity spectrum, of other industrial bonds with an assumed credit rating comparable to the Company’s.
23

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

 June 30, 2020December 31, 2019
Carrying
Amount
Market
Value
Carrying
Amount
Market
Value
(Thousands of dollars)
Southwest Gas Corporation:
Debentures:
Notes, 4.45%, due 2020$125,000  $125,591  $125,000  $126,673  
Notes, 6.1%, due 2041125,000  170,349  125,000  162,666  
Notes, 3.875%, due 2022250,000  261,013  250,000  258,550  
Notes, 4.875%, due 2043250,000  311,565  250,000  291,928  
Notes, 3.8%, due 2046300,000  328,707  300,000  308,307  
Notes, 3.7%, due 2028300,000  336,504  300,000  320,685  
Notes, 4.15%, due 2049300,000  325,410  300,000  330,138  
Notes, 2.2%, due 2030450,000  462,708  —  —  
8% Series, due 202675,000  99,588  75,000  96,905  
Medium-term notes, 7.78% series, due 202225,000  27,224  25,000  27,500  
Medium-term notes, 7.92% series, due 202725,000  33,720  25,000  32,543  
Medium-term notes, 6.76% series, due 20277,500  9,549  7,500  9,156  
Unamortized discount and debt issuance costs(18,488) (14,450) 
2,214,012  1,768,050  
Revolving credit facility and commercial paper—  —  150,000  150,000  
Industrial development revenue bonds:
Variable-rate bonds:
Tax-exempt Series A, due 202850,000  50,000  50,000  50,000  
2003 Series A, due 203850,000  50,000  50,000  50,000  
2008 Series A, due 203850,000  50,000  50,000  50,000  
2009 Series A, due 203950,000  50,000  50,000  50,000  
Unamortized discount and debt issuance costs(1,594) (1,717) 
198,406  198,283  
Less: current maturities(125,000) (125,000) 
Long-term debt, less current maturities - Southwest Gas Corporation$2,287,418  $1,991,333  
Centuri:
Centuri term loan facility$230,991  $235,906  $244,812  $252,182  
Unamortized debt issuance costs(960) (1,101) 
230,031  243,711  
Centuri secured revolving credit facility66,645  66,672  60,021  60,057  
Centuri other debt obligations101,891  104,500  43,929  44,787  
Less: current maturities(46,668) (38,512) 
Long-term debt, less current maturities - Centuri$351,899  $309,149  
Consolidated Southwest Gas Holdings, Inc.:
Southwest Gas Corporation long-term debt$2,412,418  $2,116,333  
Centuri long-term debt398,567  347,661  
Less: current maturities(171,668) (163,512) 
Long-term debt, less current maturities - Southwest Gas Holdings, Inc.$2,639,317  $2,300,482  
curves.
Southwest has a $400 million credit facility for which it has designatedthat is scheduled to expire in April 2025. Southwest designates $150 million of associated capacity as long-term debt and the remaining $250 million for working capital purposes. Interest rates for the credit facility are calculated at either the LIBOR or an “alternate base rate,” plus in each case an applicable margin that is determined based on Southwest’s senior unsecured debt rating. At June 30, 2020,March 31, 2021, the applicable margin is 1% for loans bearing interest with reference to LIBOR and
24

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

0% for loans bearing interest with reference to the alternative base rate. At June 30, 2020, there were 0March 31, 2021, $150 million was outstanding amounts on the long-term portion (including $50 million under the commercial paper program, discussed below)of the facility.
On April 10, 2020, Southwest amended itsfacility and $17 million of borrowings were outstanding on the short-term portion of this credit facility agreement; total borrowing capacity under the amended agreement remains $400 million. The amended agreement extended the maturity date from March 2022 to April 2025. Under the amended agreement, the applicable margin will range from 0.750% to 1.500% for loans bearing interest with reference to LIBOR and from 0.000% to 0.500% for loans bearing interest with reference to an alternate base rate. Upon the occurrence of certain events providing for a transition away from LIBOR, or if LIBOR is no longer a widely recognized benchmark rate, Southwest may further amend the credit facility with a replacement rate as set forth in the amended agreement. Southwest is also required to pay a commitment fee on the unfunded portion of the commitments based on its senior unsecured long-term debt rating. The commitment fee ranges from 0.075% to 0.200% per annum. The amended agreement contains certain representations and warranties and affirmative and negative covenants similar to those contained in the previous agreement. In addition, the amended agreement contains a financial covenant requiring Southwest to maintain a ratio of funded debt to total capitalization not to exceed 0.70 to 1.00 as of the end of any quarter of any fiscal year.discussed below.
Southwest has a $50 million commercial paper program. Issuances under the commercial paper program are supported by Southwest’s revolving credit facility and, therefore, do not represent additional borrowing capacity under the credit facility. Borrowings under the commercial paper program are designated asas long-term debt. Interest rates for the program are calculated at the then current commercial paper rate. At June 30, 2020, 0March 31, 2021, as noted above, $50 million of borrowings were outstanding under the commercial paper program.
In June 2020, Southwest issued $450 million aggregate principal amount of 2.20% Senior Notes at a discount of 0.126%. The notes will mature in June 2030. A portion of the net proceeds was used to reduce borrowings under Southwest’s credit facility. Additionally, Southwest intends to use a portion of the net proceeds from the issuance of the 2.20% Senior Notes to redeem the 4.45% $125 million Notes due in December 2020. On July 31, 2020, Southwest provided notice to the holders of the 4.45% Notes of Southwest’s intention to redeem the notes in full on September 1, 2020 at a redemption price of 100% plus accrued and unpaid interest.
Centuri has a $590 million senior secured revolving credit and term loan facility, scheduled to expire in November 2023. The capacity of the line of credit portion of the facility is $325 million; related amounts borrowed and repaid are available to be re-borrowed. The term loan portion of the facility has a limit of approximately $265 million. The $590 million facility is secured by substantially all of Centuri’s assets except those explicitly excluded under the terms of the agreement (including owned real estate and certain certificated vehicles). Centuri’s assets securing the facility at June 30, 2020March 31, 2021 totaled $1.3 billion.$1.3 billion. At June 30, 2020, $298March 31, 2021, $249 million in borrowingsborrowings were outstanding under Centuri’s combined secured revolving credit and term loan facility. Centuri also received proceeds of $70 million in equipment loans in 2020, which were used for repayment of outstanding borrowings on the line of credit.
Short-Term Debt
Southwest Gas Holdings, Inc. has a $100 million credit facility that is scheduled to expire in April 2025 and is primarily used for short-term financing needs. There was $58$43 million outstanding under this credit facility as of June 30, 2020.March 31, 2021.
On April 10, 2020, Southwest Gas Holdings, Inc. amended its existingUnder Southwest’s $400 million credit facility, extendingSouthwest had $17 million in short-term borrowings outstanding at March 31, 2021.
In March 2021, Southwest issued a $250 million Term Loan that matures March 22, 2022. The proceeds were used to fund the maturity date to April 2025. The revolving borrowing capacity underincreased cost of natural gas supply during the amended agreement remains at $100 million.month of February 2021, caused by extreme weather conditions in the central U.S. (see Deferred Purchased Gas Costs in Note 1 – Background, Organization, and Summary of Significant Accounting Policies). Interest rates for the amended facilityterm loan are calculated at either LIBOR or an “alternate base rate,” plus in each case an applicable margin that is determined based on Southwest Gas Holdings, Inc.’sSouthwest’s senior unsecured long-term debt rating. The applicable margin under the amended agreement ranges from 0.750%0.550% to 1.500%1.000% for loans bearing interest with reference to LIBOR and from 0.000% to 0.500% for loans bearing interest with reference to thean alternate base rate. Upon the occurrence of certain events providing for a transition away from LIBOR, or if LIBOR is no longer a widely recognized benchmarkThe effective interest rate Southwest Gas Holdings, Inc. may amend the credit facility agreement with a replacement rate, as set forth in the amended agreement. Southwest Gas Holdings, Inc. is also required to pay a commitment fee on the unfunded portion of the commitments based on its senior unsecured long-term debt rating.was 0.77% at March 31, 2021. The commitment fee ranges from 0.075% to 0.200% per annum. The amended agreement contains certain representations and warranties and affirmative and negative covenants similar to those contained in the previous agreement. In addition, the amended agreement contains a financial covenant requiring Southwest Gas Holdings, Inc. to maintain a ratio of funded debt to total capitalization not to exceed 0.70 to 1.00 as of the end of any quarter of any fiscal year.
As discussed previously, under Southwest’s $400 million credit facility, $250 million has been designated by management for working capital purposes. Southwest had 0 short-term borrowings outstanding at June 30, 2020 under this facility.

LIBOR
25

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

LIBOR
It is currently anticipated that LIBOR mayscheduled to be discontinued as a benchmark or reference rate after 2021. As of June 30, 2020, $58 million and $188 million, respectively, for the holding company and Centuri, was outstanding under credit facilities whereby interest was with reference to LIBOR and for which maturity dates extend beyond 2021; no such borrowings were outstanding for Southwest. As of June 30, 2020, these LIBOR-based borrowings approximately 9% of total debt (including current maturities) for the Company overall. Southwest and Southwest Gas Holdings, Inc., in accordance with the April 2020 amendments to their respective facilities, may make further amendments with replacement rates if LIBOR is discontinued. However, replacement rates are not currently determinable. In order to mitigate the impact of a discontinuance on the Company’s and Southwest’s financial condition and results of operations, management will continue to monitor developments and work with lenders to determine the appropriate replacement/alternative reference rate for variable rate debt. At this time the Company and Southwest can provide no assurances as to the impact a LIBOR discontinuance will have on their financial condition or results of operations. Any alternative rate may be less predictable or less attractive than LIBOR.
2623

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Note 6 – Other Comprehensive Income and Accumulated Other Comprehensive Income
The following information presents the Company’s Other comprehensive income (loss), both before and after-tax impacts, within the Condensed Consolidated Statements of Comprehensive Income, which also impact Accumulated other comprehensive income (“AOCI”) in the Condensed Consolidated Balance Sheets and the Condensed Consolidated Statements of Equity.
Related Tax Effects Allocated to Each Component of Other Comprehensive Income (Loss)
Three Months Ended June 30, 2020Three Months Ended June 30, 2019Three Months Ended
March 31, 2021
Three Months Ended
March 31, 2020
(Thousands of dollars)(Thousands of dollars)Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
(Thousands of dollars)Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Amortization of prior service costAmortization of prior service cost$289  $(69) $220  $318  $(76) $242  Amortization of prior service cost$240 $(58)$182 $289 $(69)$220 
Amortization of net actuarial (gain)/lossAmortization of net actuarial (gain)/loss9,457  (2,270) 7,187  5,844  (1,403) 4,441  Amortization of net actuarial (gain)/loss11,149 (2,675)8,474 9,458 (2,270)7,188 
Regulatory adjustmentRegulatory adjustment(8,395) 2,015  (6,380) (5,348) 1,284  (4,064) Regulatory adjustment(9,575)2,298 (7,277)(8,395)2,015 (6,380)
Pension plans other comprehensive income (loss)Pension plans other comprehensive income (loss)1,351  (324) 1,027  814  (195) 619  Pension plans other comprehensive income (loss)1,814 (435)1,379 1,352 (324)1,028 
FSIRS (designated hedging activities):FSIRS (designated hedging activities):FSIRS (designated hedging activities):
Amounts reclassified into net incomeAmounts reclassified into net income836  (201) 635  836  (200) 636  Amounts reclassified into net income544 (131)413 837 (201)636 
FSIRS other comprehensive income (loss)FSIRS other comprehensive income (loss)836  (201) 635  836  (200) 636  FSIRS other comprehensive income (loss)544 (131)413 837 (201)636 
Total other comprehensive income (loss) - Southwest Gas CorporationTotal other comprehensive income (loss) - Southwest Gas Corporation2,187  (525) 1,662  1,650  (395) 1,255  Total other comprehensive income (loss) - Southwest Gas Corporation2,358 (566)1,792 2,189 (525)1,664 
Foreign currency translation adjustments:Foreign currency translation adjustments:Foreign currency translation adjustments:
Translation adjustmentsTranslation adjustments1,794  —  1,794  787  —  787  Translation adjustments823 823 (4,005)(4,005)
Foreign currency other comprehensive income (loss)Foreign currency other comprehensive income (loss)1,794  —  1,794  787  —  787  Foreign currency other comprehensive income (loss)823 823 (4,005)(4,005)
Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$3,981  $(525) $3,456  $2,437  $(395) $2,042  Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$3,181 $(566)$2,615 $(1,816)$(525)$(2,341)
Six Months Ended June 30, 2020Six Months Ended June 30, 2019
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Defined benefit pension plans:
Amortization of prior service cost$578  $(138) $440  $635  $(152) $483  
Amortization of net actuarial (gain)/loss18,915  (4,540) 14,375  11,688  (2,805) 8,883  
Regulatory adjustment(16,790) 4,030  (12,760) (10,695) 2,567  (8,128) 
Pension plans other comprehensive income (loss)2,703  (648) 2,055  1,628  (390) 1,238  
FSIRS (designated hedging activities):
Amounts reclassified into net income1,673  (402) 1,271  1,672  (401) 1,271  
FSIRS other comprehensive income (loss)1,673  (402) 1,271  1,672  (401) 1,271  
Total other comprehensive income (loss) - Southwest Gas Corporation4,376  (1,050) 3,326  3,300  (791) 2,509  
Foreign currency translation adjustments:
Translation adjustments(2,211) —  (2,211) 1,578  —  1,578  
Foreign currency other comprehensive income (loss)(2,211) —  (2,211) 1,578  —  1,578  
Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$2,165  $(1,050) $1,115  $4,878  $(791) $4,087  


27

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

Twelve Months Ended June 30, 2020Twelve Months Ended June 30, 2019 Twelve Months Ended
March 31, 2021
Twelve Months Ended
March 31, 2020
(Thousands of dollars)(Thousands of dollars)Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
(Thousands of dollars)Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Net actuarial gain/(loss)Net actuarial gain/(loss)$(71,087) $17,061  $(54,026) $(20,426) $4,902  $(15,524) Net actuarial gain/(loss)$(57,539)$13,809 $(43,730)$(71,087)$17,061 $(54,026)
Amortization of prior service costAmortization of prior service cost1,214  (291) 923  1,302  (312) 990  Amortization of prior service cost1,106 (266)840 1,243 (298)945 
Amortization of net actuarial (gain)/lossAmortization of net actuarial (gain)/loss30,603  (7,345) 23,258  28,497  (6,839) 21,658  Amortization of net actuarial (gain)/loss39,521 (9,484)30,037 26,990 (6,477)20,513 
Prior service costPrior service cost(1,878) 452  (1,426) —  —  —  Prior service cost(1,878)452 (1,426)
Regulatory adjustmentRegulatory adjustment30,849  (7,404) 23,445  (3,809) 914  (2,895) Regulatory adjustment6,255 (1,502)4,753 33,896 (8,136)25,760 
Pension plans other comprehensive income (loss)Pension plans other comprehensive income (loss)(10,299) 2,473  (7,826) 5,564  (1,335) 4,229  Pension plans other comprehensive income (loss)(10,657)2,557 (8,100)(10,836)2,602 (8,234)
FSIRS (designated hedging activities):FSIRS (designated hedging activities):FSIRS (designated hedging activities):
Amounts reclassified into net incomeAmounts reclassified into net income3,345  (804) 2,541  3,344  (803) 2,541  Amounts reclassified into net income2,954 (710)2,244 3,345 (803)2,542 
FSIRS other comprehensive income (loss)FSIRS other comprehensive income (loss)3,345  (804) 2,541  3,344  (803) 2,541  FSIRS other comprehensive income (loss)2,954 (710)2,244 3,345 (803)2,542 
Total other comprehensive income (loss) - Southwest Gas CorporationTotal other comprehensive income (loss) - Southwest Gas Corporation(6,954) 1,669  (5,285) 8,908  (2,138) 6,770  Total other comprehensive income (loss) - Southwest Gas Corporation(7,703)1,847 (5,856)(7,491)1,799 (5,692)
Foreign currency translation adjustments:Foreign currency translation adjustments:Foreign currency translation adjustments:
Translation adjustmentsTranslation adjustments(1,751) —  (1,751) 169  —  169  Translation adjustments6,541 6,541 (2,758)(2,758)
Foreign currency other comprehensive income (loss)Foreign currency other comprehensive income (loss)(1,751) —  (1,751) 169  —  169  Foreign currency other comprehensive income (loss)6,541 6,541 (2,758)(2,758)
Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$(8,705) $1,669  $(7,036) $9,077  $(2,138) $6,939  Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$(1,162)$1,847 $685 $(10,249)$1,799 $(8,450)
(1)Tax amounts are calculated using a 24% rate. The Company has elected to indefinitely reinvest the earnings of Centuri’s Canadian subsidiaries in Canada, thus precluding deferred taxes on such earnings. As a result of this assertion, and no repatriation of earnings anticipated, the Company is not recognizing a tax effect or presenting a tax expense or benefit for currency translation adjustments reported in Other comprehensive income (loss).
Approximately $2$1.7 million of realized losses (net of tax) related to the remaining balance of Southwest’s previously settled forward-starting interest rate swapsswap (“FSIRS”), included in AOCI at June 30, 2020,March 31, 2021, will be reclassified into interest expense within the next 12 months as the related interest payments on long-term debt occur.

24

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

The following table represents a rollforward of AOCI, presented on the Company’s Condensed Consolidated Balance Sheets and its Condensed Consolidated Statements of Equity:
Defined Benefit PlansFSIRSForeign Currency Items  Defined Benefit PlansFSIRSForeign Currency Items 
(Thousands of dollars)(Thousands of dollars)Before-TaxTax
(Expense)
Benefit (4)
After-TaxBefore-TaxTax
(Expense)
Benefit (4)
After-TaxBefore-TaxTax
(Expense)
Benefit
After-TaxAOCI(Thousands of dollars)Before-TaxTax
(Expense)
Benefit (4)
After-TaxBefore-TaxTax
(Expense)
Benefit (4)
After-TaxBefore-TaxTax
(Expense)
Benefit
After-TaxAOCI
Beginning Balance AOCI December 31, 2019$(66,601) $15,985  $(50,616) $(5,966) $1,431  $(4,535) $(1,581) $—  $(1,581) $(56,732) 
Beginning Balance AOCI December 31, 2020Beginning Balance AOCI December 31, 2020$(77,720)$18,653 $(59,067)$(2,719)$651 $(2,068)$132 $— $132 $(61,003)
Translation adjustmentsTranslation adjustments—  —  —  —  —  —  (2,211) —  (2,211) (2,211) Translation adjustments— — — — — — 823 — 823 823 
Other comprehensive income (loss) before reclassificationsOther comprehensive income (loss) before reclassifications—  —  —  —  —  —  (2,211) —  (2,211) (2,211) Other comprehensive income (loss) before reclassifications— — — — — — 823 — 823 823 
FSIRS amounts reclassified from AOCI (1)—  —  —  1,673  (402) 1,271  —  —  —  1,271  
FSIRS amount reclassified from AOCI (1)FSIRS amount reclassified from AOCI (1)— — — 544 (131)413 — — — 413 
Amortization of prior service cost (2)Amortization of prior service cost (2)578  (138) 440  —  —  —  —  —  —  440  Amortization of prior service cost (2)240 (58)182 — — — — — — 182 
Amortization of net actuarial loss (2)Amortization of net actuarial loss (2)18,915  (4,540) 14,375  —  —  —  —  —  —  14,375  Amortization of net actuarial loss (2)11,149 (2,675)8,474 — — — — — — 8,474 
Regulatory adjustment (3)Regulatory adjustment (3)(16,790) 4,030  (12,760) —  —  —  —  —  —  (12,760) Regulatory adjustment (3)(9,575)2,298 (7,277)— — — — — — (7,277)
Net current period other comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.Net current period other comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.2,703  (648) 2,055  1,673  (402) 1,271  (2,211) —  (2,211) 1,115  Net current period other comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.1,814 (435)1,379 544 (131)413 823 — 823 2,615 
Ending Balance AOCI June 30, 2020$(63,898) $15,337  $(48,561) $(4,293) $1,029  $(3,264) $(3,792) $—  $(3,792) $(55,617) 
Ending Balance AOCI March 31, 2021Ending Balance AOCI March 31, 2021$(75,906)$18,218 $(57,688)$(2,175)$520 $(1,655)$955 $— $955 $(58,388)
(1)The FSIRS reclassification amounts areamount is included in Net interest deductions on the Company’s Condensed Consolidated Statements of Income.
(2)These AOCI components are included in the computation of net periodic benefit cost (see Note 2 – Components of Net Periodic Benefit Cost for additional details).
(3)The regulatory adjustment represents the portion of the activity above that is expected to be recovered through rates in the future (the related regulatory asset is included in Deferred charges and other assets on the Company’s Condensed Consolidated Balance Sheets).
(4)Tax amounts are calculated using a 24% rate.


28

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

The following table represents a rollforward of AOCI, presented on Southwest’s Condensed Consolidated Balance Sheets:
Defined Benefit PlansFSIRS  Defined Benefit PlansFSIRS 
(Thousands of dollars)(Thousands of dollars)Before-TaxTax
(Expense)
Benefit (8)
After-TaxBefore-TaxTax
(Expense)
Benefit (8)
After-TaxAOCI(Thousands of dollars)Before-TaxTax
(Expense)
Benefit (8)
After-TaxBefore-TaxTax
(Expense)
Benefit (8)
After-TaxAOCI
Beginning Balance AOCI December 31, 2019$(66,601) $15,985  $(50,616) $(5,966) $1,431  $(4,535) $(55,151) 
FSIRS amounts reclassified from AOCI (5)—  —  —  1,673  (402) 1,271  1,271  
Beginning Balance AOCI December 31, 2020Beginning Balance AOCI December 31, 2020$(77,720)$18,653 $(59,067)$(2,719)$651 $(2,068)$(61,135)
FSIRS amount reclassified from AOCI (5)FSIRS amount reclassified from AOCI (5)— — — 544 (131)413 413 
Amortization of prior service cost (6)Amortization of prior service cost (6)578  (138) 440  —  —  —  440  Amortization of prior service cost (6)240 (58)182 — — — 182 
Amortization of net actuarial loss (6)Amortization of net actuarial loss (6)18,915  (4,540) 14,375  —  —  —  14,375  Amortization of net actuarial loss (6)11,149 (2,675)8,474 — — — 8,474 
Regulatory adjustment (7)Regulatory adjustment (7)(16,790) 4,030  (12,760) —  —  —  (12,760) Regulatory adjustment (7)(9,575)2,298 (7,277)— — — (7,277)
Net current period other comprehensive income attributable to Southwest Gas CorporationNet current period other comprehensive income attributable to Southwest Gas Corporation2,703  (648) 2,055  1,673  (402) 1,271  3,326  Net current period other comprehensive income attributable to Southwest Gas Corporation1,814 (435)1,379 544 (131)413 1,792 
Ending Balance AOCI June 30, 2020$(63,898) $15,337  $(48,561) $(4,293) $1,029  $(3,264) $(51,825) 
Ending Balance AOCI March 31, 2021Ending Balance AOCI March 31, 2021$(75,906)$18,218 $(57,688)$(2,175)$520 $(1,655)$(59,343)
(5)    The FSIRS reclassification amounts areamount is included in Net interest deductions on Southwest’s Condensed Consolidated Statements of Income.
(6)These AOCI components are included in the computation of net periodic benefit cost (see Note 2 – Components of Net Periodic Benefit Cost for additional details).
(7)The regulatory adjustment represents the portion of the activity above that is expected to be recovered through rates in the future (the related regulatory asset is included in Deferred charges and other assets on Southwest’s Condensed Consolidated Balance Sheets).
(8)Tax amounts are calculated using a 24% rate.
The following table represents amounts (before income tax impacts) included in AOCI (in the tables above), that have not yet been recognized in net periodic benefit cost:
(Thousands of dollars)(Thousands of dollars)June 30, 2020December 31, 2019(Thousands of dollars)March 31, 2021December 31, 2020
Net actuarial (loss) gain$(464,159) $(483,074) 
Net actuarial lossNet actuarial loss$(491,634)$(502,783)
Prior service costPrior service cost(3,063) (3,641) Prior service cost(2,247)(2,487)
Less: amount recognized in regulatory assetsLess: amount recognized in regulatory assets403,324  420,114�� Less: amount recognized in regulatory assets417,975 427,550 
Recognized in AOCIRecognized in AOCI$(63,898) $(66,601) Recognized in AOCI$(75,906)$(77,720)

2925

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Note 7 – Segment Information
Centuri accounts for the services provided to Southwest at contractual prices at contract inception. Accounts receivable for these services, which are not eliminated during consolidation, are presented in the table below:
(Thousands of dollars)(Thousands of dollars)June 30, 2020December 31, 2019(Thousands of dollars)March 31, 2021December 31, 2020
Centuri accounts receivable for services provided to SouthwestCenturi accounts receivable for services provided to Southwest$17,364  $15,235  Centuri accounts receivable for services provided to Southwest$11,344 $13,956 

The Company has 2 reportable segments: natural gas operations and utility infrastructure services. Southwest has a single reportable segment that is referred to herein as the natural gas operations segment of the Company. In order to reconcile to net income as disclosed in the Condensed Consolidated Statements of Income, an Other column is included associated with impacts of corporate and administrative activities related to Southwest Gas Holdings, Inc. The financial information pertaining to the natural gas operations and utility infrastructure services segments is as follows:
(Thousands of dollars)(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal
Three Months Ended June 30, 2020
Three Months Ended March 31, 2021Three Months Ended March 31, 2021
Revenues from external customersRevenues from external customers$262,434  $457,890  $—  $720,324  Revenues from external customers$521,932 $339,772 $— $861,704 
Intersegment revenuesIntersegment revenues—  36,923  —  36,923  Intersegment revenues24,203 — 24,203 
TotalTotal$262,434  $494,813  $—  $757,247  Total$521,932 $363,975 $— $885,907 
Segment net income (loss)Segment net income (loss)$11,942  $26,267  $(244) $37,965  Segment net income (loss)$118,715 $(859)$(563)$117,293 
Three Months Ended June 30, 2019
Three Months Ended March 31, 2020Three Months Ended March 31, 2020
Revenues from external customersRevenues from external customers$258,711  $405,218  $—  $663,929  Revenues from external customers$502,827 $300,291 $— $803,118 
Intersegment revenuesIntersegment revenues—  49,082  —  49,082  Intersegment revenues33,202 — 33,202 
TotalTotal$258,711  $454,300  $—  $713,011  Total$502,827 $333,493 $— $836,320 
Segment net income (loss)Segment net income (loss)$3,369  $18,918  $(231) $22,056  Segment net income (loss)$83,599 $(10,204)$(853)$72,542 
(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal
Six Months Ended June 30, 2020
Revenues from external customers$765,261  $758,181  $—  $1,523,442  
Intersegment revenues—  70,125  —  70,125  
Total$765,261  $828,306  $—  $1,593,567  
Segment net income (loss)$95,541  $16,063  $(1,097) $110,507  
Six Months Ended June 30, 2019
Revenues from external customers$779,388  $679,407  $—  $1,458,795  
Intersegment revenues—  87,755  —  87,755  
Total$779,388  $767,162  $—  $1,546,550  
Segment net income (loss)$106,758  $10,887  $(780) $116,865  
(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal
Twelve Months Ended March 31, 2021
Revenues from external customers$1,369,690 $1,852,910 $— $3,222,600 
Intersegment revenues125,860 — 125,860 
Total$1,369,690 $1,978,770 $— $3,348,460 
Segment net income (loss)$194,234 $84,207 $(1,366)$277,075 
Twelve Months Ended March 31, 2020
Revenues from external customers$1,351,089 $1,618,354 $— $2,969,443 
Intersegment revenues153,255 — 153,255 
Total$1,351,089 $1,771,609 $— $3,122,698 
Segment net income (loss)$143,381 $50,231 $(1,943)$191,669 

3026

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal
Twelve Months Ended June 30, 2020
Revenues from external customers$1,354,812  $1,671,026  $—  $3,025,838  
Intersegment revenues—  141,096  —  141,096  
Total$1,354,812  $1,812,122  $—  $3,166,934  
Segment net income (loss)$151,954  $57,581  $(1,957) $207,578  
Twelve Months Ended June 30, 2019
Revenues from external customers$1,367,124  $1,470,787  $—  $2,837,911  
Intersegment revenues—  163,439  —  163,439  
Total$1,367,124  $1,634,226  $—  $3,001,350  
Segment net income (loss)$152,629  $47,629  $(1,758) $198,500  

31

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Southwest Gas Holdings, Inc. is a holding company that owns all of the shares of common stock of Southwest Gas Corporation (“Southwest” or the “natural gas operations” segment) and all of the shares of common stock of Centuri Group, Inc. (“Centuri,” or the “utility infrastructure services” segment). Southwest Gas Holdings, Inc. and its subsidiaries are collectively referred to as the “Company.”
Southwest is engaged in the business of purchasing, distributing, and transporting natural gas for customers in portions of Arizona, Nevada, and California. Southwest is the largest distributor of natural gas in Arizona, selling and transporting natural gas in most of central and southern Arizona, including the Phoenix and Tucson metropolitan areas. Southwest is also the largest distributor of natural gas in Nevada, serving the majority of southern Nevada, including the Las Vegas metropolitan area, and portions of northern Nevada. In addition, Southwest distributes and transports natural gas for customers in portions of California, including the Lake Tahoe area and the high desert and mountain areas in San Bernardino County.
As of June 30, 2020,March 31, 2021, Southwest had 2,102,0002,133,000 residential, commercial, industrial, and other natural gas customers, of which 1,121,0001,138,000 customers were located in Arizona, 781,000793,000 in Nevada, and 202,000 in 200,000 in California. Over the past twelve months, first timefirst-time meter sets were approximately 36,000, 37,000, compared to 33,00036,000 for the twelve months ending June 2019.ended March 2020. The remaining increase in active customer accounts compared to the June 30, 2019March 31, 2020 total of 2,061,0002,091,000 was primarily due to a management-initiated moratorium on disconnections as a result of the COVID-19 pandemic. As utility service is an essential service to the residents in the states in which Southwest operates, it implemented the temporary moratorium in March 2020 and also ceased charging late fees. Southwest recommenced assessing late fees until further notice. We can provide no assurances asin Nevada and Arizona in April 2021, with late fees in California expected to whenrecommence in the latter half of 2021. The duration of our moratorium will be lifted.on disconnections for non-payment is currently uncertain. Residential and small commercial customers represented over 99% of the total customer base. During the twelve months ended June 30, 2020, March 31, 2021, 53% of operating margin (gas operating revenues less the net cost of gas sold) was earned in Arizona, 36% in Nevada, and 11% in California. During this same period, Southwest earned earned 85% of its operating margin from residential and small commercial customers,customers, 3% from other sales customers, and 12% fromfrom transportation customers. While these general patterns are expected to remain materially consistent for the foreseeableforeseeable future, the globalcontinuing COVID-19 pandemic, as discussed further below, could impact these statistics and associated patterns in the short term.
Southwest recognizes operating revenues from the distribution and transportation of natural gas (and related services) to customers. Operating margin is a financial measure defined by management as gas operating revenues less the net cost of gas sold. However, operating margin is not specifically defined in accounting principles generally accepted in the United States (“U.S. GAAP”). Thus, operating margin is considered a non-GAAP measure. Management uses this financial measure because natural gas operating revenues include the net cost of gas sold, which is a tracked cost that is passed through to customers without markup under purchased gas adjustment (“PGA”) mechanisms. Fluctuations in the net cost of gas sold impact revenues on a dollar-for-dollar basis, but do not impact operating margin or operating income. Therefore, management believes operating margin provides investors and other interested parties with useful and relevant information to analyze Southwest’s financial performance in a rate-regulated environment. The principal factors affecting changes in operating margin are general rate relief (including impacts of infrastructure trackers) and customer growth. Commission decisions on the amount and timing of such relief may impact our earnings, such as with the current Arizona general rate case, whereby hearings were deferred amidst the current pandemic, and both a decision and new rate establishment are expected to occur later than originally expected.earnings. Refer to the Summary Operating Results table for a reconciliation of revenues to operating margin, and refer to Rates and Regulatory Proceedings in this Management’s Discussion and Analysis.Analysis, for details of various rate proceedings.
The demand for natural gas is seasonal, with greater demand in the colder winter months and decreased demand in the warmer summer months. All of Southwest’s service territories have decoupled rate structures (alternative revenue programs), which are designed to eliminate the direct link between volumetric sales and revenue, thereby mitigating the impacts of unusual weather variability and conservation on operating margin, allowing Southwest to pursue energy efficiency initiatives.
Centuri is a comprehensive utility infrastructure services enterprise dedicated to delivering a diverse array of solutions to North America’s gas and electric providers. Centuri derives revenue primarily from installation, replacement, repair, and maintenance of energy distribution systems. Centuri operates in 5455 primary locations across 40 states and provinces in the United States (“U.S.”) and Canada. Centuri operates in the U.S., primarily as NPL, Neuco, and Linetec, and in Canada, primarily as NPL Canada.
3227

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Utility infrastructure services activity can be impacted by changes in infrastructure replacement programs of utilities, weather, and local and federal regulation (including tax rates and incentives). During the past few years, utilities have implementedUtilities continue to implement or modifiedmodify system integrity management programs to enhance safety pursuant to federal and state mandates. These programs have resulted in a significant increase following those mandates in multi-year utility system replacement projects throughout the U.S. Generally, Centuri revenues are lowest during the first quarter of the year due to less favorable winter weather conditions. Revenues typically improve as more favorable weather conditions occur during the summer and fall months. In cases of severe weather, such as following a regional storm, Centuri may be engaged to perform restoration activities related to above-ground utility infrastructure. In certain circumstances, such as with large bid contracts (especially those of a longer duration), or unit-price contracts with revenue caps, results may be impacted by differences between costs incurred and those anticipated when the work was originally bid. Work awarded, or failing to be awarded, by individual large customers can significantly impact operating results.
COVID-19 Pandemic
In March 2020, the World Health Organization categorizedWhile the novel coronavirus (“COVID-19”) as a pandemic has been ongoing since the first quarter of 2020, management has remained focused on the impacts to local and President Donald Trump declaredU.S. economies, including the COVID-19 outbreak a national emergency. The outbreak resulted in government officials implementing stringent measures to help control the spreadbreadth of the virus, including quarantines, “shelter in place”vaccine deployment and “stay at home” orders, travel restrictions, business curtailments, school closures, and other measures. Certain jurisdictions have begun re-opening only to return to further restrictions in the facelevel of new COVID-19 cases. In addition, governments and central banks in several parts of the world enacted fiscal and monetary stimulus measures to mitigate financial impacts of COVID-19 on individuals and businesses.
commerce re-opening. Our utility operations, are considered anas essential serviceservices, have been ongoing during this time and Southwest continueshas continued to provide services to meet the demand of its customers, even while many other types of businesses were or are closed.customers. Consistent with federal and state guidelines and protocols, Southwest has continued to operate across its territories. Similarly, the majority of Centuri’s largest clients issued essential service letters to Centuri businesses in keeping with the federal definition of “essential” set out by the Department of Homeland Security. This allowed Centuri to similarly continuehas continued nearly all operations from the outset of the pandemic in the U.S., and demand has not significantly diminished. TheFor the duration of the pandemic, the ability to work may nonetheless be impacted by individuals contracting or being exposed to COVID-19, governmental requirements to postpone the full resumption of certain non-essential services in some of the Company’s jurisdictions, or by management imposed restrictions for safety precautions; to date, these factors have not had a significant impact on the Company’s ability to maintain operations. The Company has instructed employeesEmployees at many offices (including corporate headquarters) continue to work from home on a temporary basis and implemented travel restrictions.restrictions largely continue. Both segments implemented business continuity plans, including the deployment of technologycontinue to conduct administrativefacilitate administration, communication, and all critical functions, remotely, where possible, and employees and management teams have been in place to communicate and respond to changes quickly and effectively.supported by deployed technology. To date, there has not been a significant disruption in the Company’s supply chains, transportation network, or ability to serve customers.
As an essential service provider, Southwest implemented several important measures with regardnoted earlier, management continues to its customers. As noted above, it initiatedhave in place a temporary moratorium on natural gas disconnections for non-payment; it is workingnon-payment and continues to work with customers who are experiencing financial hardship through flexible payment arrangements;arrangements. Management also continues to coordinate with certain governmental and it also ceased charging late fees until further notice.nonprofit entities for customer payment assistance. Management does not expect a material increase tohas increased the allowance for uncollectibles from suchuncollectibles; however, neither this nor other measures as during warmer months, such asassociated with the summer season, monthly utility bills for natural gas are substantially reduced. Should the pandemic continue into the winter season, the potentialmoratorium have had a material impact could be more significant.on our financial position overall. See Accounts receivable, net of allowances in Note 1 – Background, Organization, and Summary of Significant Accounting Policies. In the utility infrastructure services segment, a limited number of Centuri customers at the outset of the pandemic delayed some projects, primarily in response to local governmental restrictions. Project delays, whether due to governmental restrictions or reassessments of timing by Centuri’s customers, resulted in temporary reductions of workforce crews.and crews were temporarily reduced; however, most work continued, while following appropriate government protocols. Some crew reductions are ongoing in specific areas andareas; however, the associated revenue impacts have not been significant. Management is monitoring the dynamic nature ofcontinues to monitor these circumstances, the full future impacts of which are not currently known, includingsuch as the impact from business curtailments, weak market conditions, or governmental restrictions, including any restrictions which couldthat may limit the fulfillment by Centuri of its contractual obligations.
The Company has incurred additional expensesextent to which COVID-19 may adversely impact the Company’s business depends on future developments, including the timing of full resumption of commerce across our service territories, the deployment of vaccines and population immunity, the state of local and North American economies, and impacts of these collective conditions on our customers, in connection with its responseaddition to other unmitigated effects related to the virus. Management does not currently expect the impact of these conditions including costs of disinfecting work locations and equipment, costs related to enabling employees to support customers while working remotely, and impacts from the moratorium on customer disconnection and late fee assessment. These additional costs were notbe material to the Company’s fiscal 2020 results to date,liquidity or financial position; however, continued uncertainty of economic and certain of Southwest’s regulatory commissions have implemented measures to mitigateoperational impacts of these conditions on Southwest. See means management cannot predict whether the related financial impact in future periods will be different from impacts reflected foRates and Regulatory Proceedingsr the three below for additional detail.and twelve months ended
On March 27, 2020, the Coronavirus Aid, Relief and Economic Security (“CARES”) Act was enacted, as discussed in Note 1 – Background, Organization, and Summary of Significant Accounting Policies31, 2021. The CARES ActIn anticipation of a redeployment of employees to date has not,their normal work locations, management created a multi-phase reintegration plan to safeguard the well-being of our teams. Management will continue to monitor developments by government officials, and management anticipates that itthose affecting employees, customers, and operations, and will not, have a material effect on the Company’s or Southwest’s results of operations, financial position, or liquidity. In Canada, Centuri received $3.4 million of wage subsidiestake additional steps as necessary to address impacts from the Canadian governmentpandemic. Events and circumstances arising after March 31, 2021, including those resulting from COVID-19, will be reflected in management’s estimates for future periods.
This Management’s Discussion and Analysis (“MD&A”) of Financial Condition and Results of Operations should be read in conjunction with the unaudited condensed consolidated financial statements and notes thereto included in this Quarterly Report on Form 10-Q and the audited financial statements and notes thereto, as part of a COVID-19 relief program. Management does not expect these subsidies, if any,well as MD&A, included in the 2020 Annual Report to be significant in future periods.Stockholders, which is incorporated by reference into the 2020 Form 10-K.

3328

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020

The extent to which COVID-19 may adversely impact the Company’s business depends on future developments, including the timing of, or continued deferment by government officials related to, the resumption of commerce across the service territories of all our businesses, the magnitude of further spread of the virus in advance of and following such resumption, impacts of these conditions on our customers, the state of the North American economy following that resumption, and possibly other unmitigated effects related to the virus. Management does not currently expect the impact of these conditions to be material to the Company’s liquidity and financial position; however, the current level of uncertainty over the economic and operational impacts of COVID-19 means the related financial impact cannot be fully estimated at this time, and management cannot predict whether future periods will be impacted differently than the impacts reflected in the six months ended June 30, 2020. In anticipation of a redeployment of employees to their normal work locations, management has created a multi-phase reintegration plan to safeguard the well-being of our teams, including hygiene, sanitization, and social distancing practices, as well as the use of personal protective equipment for employees and visitors. Management will continue to monitor developments affecting the Company’s employees, customers, and operations, and take additional steps to address the COVID-19 pandemic and its impacts, as necessary. Events and changes in circumstances arising after June 30, 2020, including those resulting from the impacts of COVID-19, will be reflected in management’s estimates for future periods.
This Management’s Discussion and Analysis (“MD&A”) of Financial Condition and Results of Operations should be read in conjunction with the unaudited condensed consolidated financial statements and the notes thereto included in this Quarterly Report on Form 10-Q and the audited financial statements and the notes thereto, as well as MD&A, included in the 2019 Annual Report to Shareholders, which is incorporated by reference into the 2019 Form 10-K.

34

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020March 31, 2021

Executive Summary
The items discussed in this Executive Summary are intended to provide an overview of the results of the Company’s and Southwest’s operations. As needed, certain items are covered in greater detail in later sections of MD&A. As reflected in the table below, the natural gas operations segment accounted for an average average of 75% 72% of twelve-month-to-datetwelve-month-to-date consolidated net income over the past two years. As such, MD&A is primarily focused on that segment. Natural gas sales are seasonal, peaking during the winter months; therefore, results of operations for interim periods are not necessarily indicative of results for a full year.
Summary Operating Results
Period Ended June 30, Period Ended March 31,
Three MonthsSix MonthsTwelve Months Three MonthsTwelve Months
(In thousands, except per share amounts)(In thousands, except per share amounts)202020192020201920202019(In thousands, except per share amounts)2021202020212020
Contribution to net incomeContribution to net incomeContribution to net income
Natural gas operationsNatural gas operations$11,942  $3,369  $95,541  $106,758  $151,954  $152,629  Natural gas operations$118,715 $83,599 $194,234 $143,381 
Utility infrastructure servicesUtility infrastructure services26,267  18,918  16,063  10,887  57,581  47,629  Utility infrastructure services(859)(10,204)84,207 50,231 
Corporate and administrativeCorporate and administrative(244) (231) (1,097) (780) (1,957) (1,758) Corporate and administrative(563)(853)(1,366)(1,943)
Net incomeNet income$37,965  $22,056  $110,507  $116,865  $207,578  $198,500  Net income$117,293 $72,542 $277,075 $191,669 
Weighted average common sharesWeighted average common shares55,462  53,935  55,386  53,654  55,105  51,914  Weighted average common shares57,600 55,310 56,564 54,726 
Basic earnings per shareBasic earnings per shareBasic earnings per share
ConsolidatedConsolidated$0.68  $0.41  $2.00  $2.18  $3.77  $3.82  Consolidated$2.04 $1.31 $4.90 $3.50 
Natural Gas OperationsNatural Gas OperationsNatural Gas Operations
Reconciliation of Revenue to Operating Margin (Non-GAAP measure)Reconciliation of Revenue to Operating Margin (Non-GAAP measure)Reconciliation of Revenue to Operating Margin (Non-GAAP measure)
Gas operating revenuesGas operating revenues$262,434  $258,711  $765,261  $779,388  $1,354,812  $1,367,124  Gas operating revenues$521,932 $502,827 $1,369,690 $1,351,089 
Less: Net cost of gas soldLess: Net cost of gas sold67,473  65,182  228,294  257,786  355,672  407,976  Less: Net cost of gas sold156,021 160,821 338,037 353,381 
Operating marginOperating margin$194,961  $193,529  $536,967  $521,602  $999,140  $959,148  Operating margin$365,911 $342,006 $1,031,653 $997,708 

2nd1st Quarter 20202021 Overview
Natural gas operations highlights include the following:

36,000 first-time37,000 first-time meters sets (1.7% growthsets (1.8% growth rate) occurred over the past 12 months
Operations and maintenance expense decreased $5.7Operating margin increased $24 million
Company-OwnedCompany-Owned Life Insurance (“COLI”) income increased $8.6was $2.7 million between quartersin the current quarter versus a loss of $15.5 million in the prior-year quarter
Issued $450$250 million in 2.2% 10-year Notes (a record low fixedterm loan due March 2022 to fund incremental gas costs
California rate for Southwest)case finalized

Utility infrastructure services highlights include the following:
 
Record second quarter net income of $26.3 million
Utility infrastructure services revenues increased $41 $30 million, or 8.9%9.1%
Supported customers with restoration services following winter freeze event ($9 million of incremental revenue)
Utility infrastructure services expenses increased $28$16 million, or 7.0%5.1%
Equipment purchases duringRealized $1.5 million in gains on sale of equipment

Southwest Gas Holdings highlights include the past 12 months resulted in a $3following:
Increased the quarterly dividend from $0.570 to $0.595 per share effective with the June 2021 payment
Received net proceeds of $46 million increase in depreciationthrough equity shelf program issuances


3529

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Results of Natural Gas Operations
Quarterly Analysis
Three Months Ended
June 30,
Three Months Ended
March 31,
(Thousands of dollars)(Thousands of dollars)20202019(Thousands of dollars)20212020
Gas operating revenuesGas operating revenues$262,434  $258,711  Gas operating revenues$521,932 $502,827 
Net cost of gas soldNet cost of gas sold67,473  65,182  Net cost of gas sold156,021 160,821 
Operating marginOperating margin194,961  193,529  Operating margin365,911 342,006 
Operations and maintenance expenseOperations and maintenance expense99,320  104,991  Operations and maintenance expense106,135 103,088 
Depreciation and amortizationDepreciation and amortization53,198  49,343  Depreciation and amortization68,698 64,725 
Taxes other than income taxesTaxes other than income taxes15,342  15,126  Taxes other than income taxes20,687 16,378 
Operating incomeOperating income27,101  24,069  Operating income170,391 157,815 
Other income (deductions)Other income (deductions)7,838  1,592  Other income (deductions)550 (20,536)
Net interest deductionsNet interest deductions23,991  23,345  Net interest deductions22,166 25,058 
Income before income taxesIncome before income taxes10,948  2,316  Income before income taxes148,775 112,221 
Income tax benefit(994) (1,053) 
Income tax expenseIncome tax expense30,060 28,622 
Contribution to consolidated net incomeContribution to consolidated net income$11,942  $3,369  Contribution to consolidated net income$118,715 $83,599 
ContributionImprovements from natural gas operations to consolidated net income increased $8.6income of $35 million betweenoccurred between the secondfirst quarters of 20202021 and 2019.2020. The increaseimprovement was primarily due to an increaseincreases in Operating Margin and Other income, customer growth, and lower Operations and maintenance expense, offset by an increase in Depreciation and amortization.income.
Operating margin increased $1.4$24 million. Customer growth provided approximately $2.5Approximately $6 million of incremental margin was attributable to customer growth from 36,00037,000 first-time meter sets during the last twelve months. Ratemonths, while rate relief contributed approximately $400,000 in incremental operatingadded $18 million of margin. Offsetting the increasethese increases were other items, including the impact ofimpacts from the temporary moratorium on late fees andinitiated by Southwest in March 2020 ($2.6 million), in addition to lower connection/re-connection charges, duringas a result of the COVID-19 pandemic. Amounts returned to and collected from customers associated with regulatory account balances, as well as differences in miscellaneous revenue and margin from customers outside the decoupling mechanisms, also impacted the variance between periods.
Operations and maintenance expense decreased $5.7 million between quarters primarily due to the impacts of COVID-19 on training and travel costs and reductions in other service and maintenance costs. Overall, the variance between 2019 and 2020 is expected to narrow in the second half of 2020.
Depreciation and amortization expense increased $3.9$3 million, or 8%3%, between quarters primarily due to an increase in the service-related component of employee pension cost and other benefits, increased expenditures for pipeline damage prevention programs, and increased legal claim-related costs, offset by lower training and travel costs as a $684result of the current COVID-19 environment.
Depreciation and amortization expense increased $4 million, or 9%6%, between quarters, primarily due to a $546 million, or 7%, increase in average gas plant in service compared to the corresponding quarter a year ago, offset by a decreaseyear ago. Amortization of regulatory program balances impacted expense in regulatory account amortization.both periods. The increase in gas plant was attributable to pipeline capacity reinforcement work,work, franchise requirements, scheduled pipe replacement activities, and new infrastructure.
Taxes other than income taxes increased $4.3 million between quarters primarily due to an increase in Arizona property taxes.
Other incomeincome improved $6.2 $21.1 million between quarters primarily due to an increase in income from company-owned life insurance (“COLI”)COLI policies. The current quarter reflects a $12$2.7 million increase in COLI policy cash surrender values, while the prior-year quarter reflectedreflected a $3.4$15.5 million increasedecline in COLI policy cash surrender values. These values are significantly impacted by fluctuations primarily result from changes in the values of equity securities associated with the cash surrender values, and valuesvalues; changes in both periodsquarters were impacted directionally consistent with the broader securities markets. Offsetting these impacts were higherAdditionally, the non-service-related costs associated withcomponents of employee pension and other postretirement benefitsbenefit costs decreased $1.5 million between periods.
Net interest deductions decreased $2.9 million in the first quarter of 2021, as compared to the prior-year quarter, primarily due to lower carrying costs on PGA balances and amortization of an interest-related regulatory balance in Arizona, as well as lower interest income on regulatory account balances.rates associated with variable-rate debt.

Income tax expense in both periods reflects that COLI results are recognized without tax consequences, and also reflects the amortization of excess accumulated deferred income tax (“EADIT”) balances.
3630

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Results of Natural Gas Operations
Six-MonthsTwelve-Month Analysis

Twelve Months Ended March 31,
(Thousands of dollars)20212020
Gas operating revenues$1,369,690 $1,351,089 
Net cost of gas sold338,037 353,381 
Operating margin1,031,653 997,708 
Operations and maintenance expense409,429 419,720 
Depreciation and amortization239,268 222,733 
Taxes other than income taxes67,769 62,500 
Operating income315,187 292,755 
Other income (deductions)14,496 (16,965)
Net interest deductions98,256 96,985 
Income before income taxes231,427 178,805 
Income tax expense37,193 35,424 
Contribution to consolidated net income$194,234 $143,381 
Six Months Ended
June 30,
(Thousands of dollars)20202019
Gas operating revenues$765,261  $779,388  
Net cost of gas sold228,294  257,786  
Operating margin536,967  521,602  
Operations and maintenance expense202,408  210,533  
Depreciation and amortization117,923  106,955  
Taxes other than income taxes31,720  31,332  
Operating income184,916  172,782  
Other income (deductions)(12,698) 7,538  
Net interest deductions49,049  46,444  
Income before income taxes123,169  133,876  
Income tax expense27,628  27,118  
Contribution to consolidated net income$95,541  $106,758  
Contribution from natural gas operations to consolidated net income decreased $11.2from natural gas operations increased $51 million between the first six months of 2020twelve-month periods ended March 2021 and 2019. The decline was2020. The increase was primarily due to a decrease in Other income and increases in Depreciation and amortization, partially offset by an increase in Operating margin and lower Operations and maintenance expense.Other income.
Operating marginmargin increased $34 million between periods. Customer growth provided $15 million,, including $8 and combined rate relief provided $24 million attributable to customer growth. Rate relief, primarily in California, contributed an additional $1 million inof incremental operating margin. The prior-year period included an approximate $5 million reduction in margin resulting from a one-time adjustment bypandemic-period moratorium on late fees ($7.3 million) and lower connection/re-connection charges offset the Arizona Corporation Commission to reflect the impacts of U.S. tax reform on the Arizona decoupling mechanism. The remaining increase primarily resulted from the net recovery of regulatory program balances (collectively, having an offsetting impact in amortization expense),improvements. Regulatory account balance return and recoveries impacted both periods, in addition to margin from customers outside the decoupling mechanisms, offset by lower late fees and connect/re-connect charges during the current moratorium noted previously.mechanisms.
Operations and maintenance expenseexpense decreased $8.1$10.3 million,, or 4%2%, between periods. Reductions in training and travel costsperiods primarily due to lower travel and in-person training costs in the current COVID-19 environment as well as lower legal claims-related costs, and decreasesdue to other cost saving initiatives by management. These were partially offset by incremental expenditures for pipeline damage prevention programs associated with a growing infrastructure and customer base, and by increases in other service and maintenance costs contributed to the decline between periods. Overall, the variance between 2019 and 2020 is expected to narrow in the second half of 2020.information technology costs.
Depreciation and amortization expense increased $11$16.5 million,, or 10%7%, between periods primarilyprimarily due to a $684 $634 million, or 9%8%, increase in average gas plant in service since the corresponding period in the prior year, offset by a modest decrease in regulatory amortization.
Taxes other than income taxes increased $5.3 million between periods. Theperiods primarily due to an increase in gas plant was attributableproperty taxes in Arizona, and to pipeline capacity reinforcement work, franchise requirements, scheduled pipe replacement activities,a lesser extent, in Southwest’s California and new infrastructure. Regulatory account surcharges, as noted above, also resulted in increases in amortization expense in the current period.Nevada jurisdictions.
Other income decreased $20.2income increased $31.5 million overall between periods. The current period reflectsthe twelve-month periods of 2021 and 2020, primarily due to a $3.5current-period $27.4 million declineincrease in COLI policy cash surrender values whileand recognized death benefits, while the prior-year periodtwelve months ended March 31, 2020 reflected $11a $5.7 million of COLI-related income. The non-service cost components of employee pension and other postretirement benefits costs decline. Offsetting these amounts were $2.5 million higher between periods. Additionally, lower interest earned on regulatory balances contributed to the decrease between periods.and an increase in non-service related components of post-retirement benefit cost.
Net interest deductions increased $2.6$1.3 million between periods primarily due to higher interest associated with the issuance of $300$450 million of Senior Notes in May 2019June 2020, offset by amortization of an interest-related regulatory balance in Arizona and higher debt balances outstandinga reduction in interest rates on variable-rate debt.
Income tax expense in both periods reflects that COLI results are recognized without tax consequences, and also reflects the current period.




amortization of EADIT balances.
3731

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Results of Natural Gas OperationsUtility Infrastructure Services
Twelve-MonthQuarterly Analysis
Twelve Months Ended June 30,
(Thousands of dollars)20202019
Gas operating revenues$1,354,812  $1,367,124  
Net cost of gas sold355,672  407,976  
Operating margin999,140  959,148  
Operations and maintenance expense414,049  407,948  
Depreciation and amortization226,588  201,146  
Taxes other than income taxes62,716  61,307  
Operating income295,787  288,747  
Other income (deductions)(10,719) (3,005) 
Net interest deductions97,631  88,780  
Income before income taxes187,437  196,962  
Income tax expense35,483  44,333  
Contribution to consolidated net income$151,954  $152,629  
Three Months Ended
March 31,
(Thousands of dollars)20212020
Utility infrastructure services revenues$363,975 $333,493 
Operating expenses:
Utility infrastructure services expenses335,614 319,314 
Depreciation and amortization24,744 22,928 
Operating income (loss)3,617 (8,749)
Other income (deductions)(102)(242)
Net interest deductions1,622 2,899 
Income (loss) before income taxes1,893 (11,890)
Income tax expense (benefit)1,200 (2,149)
Net income (loss)693 (9,741)
Net income attributable to noncontrolling interest1,552 463 
Contribution to consolidated net income attributable to Centuri$(859)$(10,204)
ContributionUtility infrastructure services revenues increased $30.5 million in the first quarter of 2021 when compared to consolidated net income from natural gas operations decreased $700,000 between the twelve-month periods ended June 2020 and 2019. The decline was primarily due to higher Depreciation and amortization expense, Net interest deductions, and lower Other income, partially offset by an increase in operating margin.
Operating margin increased $40 million between periods. Customer growth provided $13 million, and combined rate relief, primarily in Nevada and California, provided $7 million of incremental operating margin. The prior-year period included an approximate $5 million reduction in margin resulting from a one-time adjustment to reflect the impacts of U.S. tax reform on the Arizona decoupling mechanism. The remaining net increase resulted from recoveries of regulatory assets (approximately $10 million, offset in amortization expense below), infrastructure replacement mechanisms, and customers outside the decoupling mechanisms.
Operations and maintenance expense increased $6.1 million (or 1%) between periodsquarter, primarily due to incremental expenditures for pipeline damage prevention programselectric infrastructure revenues of $21.6 million from expansion of work with existing customers and higher legal claim-related costs, partially offsetsecuring work with new customers. Included in the incremental electric infrastructure revenues during the first quarter of 2021 was $9 million from emergency restoration services performed by lower trainingLinetec following tornados and travel costsice storms primarily in Texas. The remaining increase in revenue was attributable to favorable weather in several areas and customer scheduling, which allowed bid projects to be completed during an otherwise seasonally slow period.
Utility infrastructure services expenses increased $16.3 million in the first quarter of 2021 when compared to the prior-year quarter, primarily due to costs to complete additional electric and gas infrastructure work. Operating efficiencies improved due to favorable weather conditions and reduced COVID-19 restrictions from the current COVID-19 environment.prior year. Additionally, changes in mix of work resulted in lower subcontractor expenses as a percentage of revenues, which contributed to increased operating income. Storm restoration work typically generates a higher profit margin than core infrastructure services, due to improved operating efficiencies related to equipment utilization and absorption of fixed costs. Included in total Utility infrastructure services expenses were general and administrative costs, which increased $3.3 million in 2021 compared to 2020, associated primarily with growth of the business. Gains on sale of equipment in the first quarter of 2021 (reflected as an offset to Utility infrastructure services expenses) were $1.5 million.
Depreciation and amortization expense increased $1.8 million between quarters, attributable to equipment purchased to support the growing business, primarily at Linetec. Depreciation expense, increased $25.4relative to the revenues recorded, was generally consistent between periods.
Net interest deductions decreased $1.3 million or 13%, between periodsquarters primarily due to a $651 million, or 9%, increase in average gas plant in service since the corresponding period in the prior year. Amortization related to regulatory account recoveries increased approximately $10 million between periods.
Other income decreased $7.7 million between the twelve-month periods of 2020 and 2019 primarily due to a decline in COLI policy values. The current period reflects a $2.9 million increase in COLI policy cash surrender values, while the prior year period reflected a $6.5 million increase. Lower interest on regulatory account balances and lower amountsincremental borrowing rates associated with the allowance for equity funds applied to projects during construction also impacted the variance between periods.decreased outstanding borrowings under Centuri’s $590 million secured revolving credit and term loan facility.
Net interest deductions increased $8.9 million between periods primarily due to interest associated with the issuance of $300 million of Senior Notes in May 2019.
The reduction in income taxes between periods reflects lower earnings, as well as lower state income taxes (due to apportionment changes) and an additional $1.2 million in amortization of excess accumulated deferred income taxes following U.S. tax reform, which reduces tax expense.






3832

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020

Results of Utility Infrastructure Services
Quarterly Analysis
Three Months Ended
June 30,
(Thousands of dollars)20202019
Utility infrastructure services revenues$494,813  $454,300  
Operating expenses:
Utility infrastructure services expenses430,224  402,199  
Depreciation and amortization24,019  20,999  
Operating income40,570  31,102  
Other income (deductions)86  (477) 
Net interest deductions2,239  3,457  
Income before income taxes38,417  27,168  
Income tax expense10,234  7,474  
Net income28,183  19,694  
Net income attributable to noncontrolling interest1,916  776  
Contribution to consolidated net income attributable to Centuri$26,267  $18,918  
Utility infrastructure services revenues increased $40.5 million in the second quarter of 2020 when compared to the prior-year quarter, due to a higher volume of electric infrastructure and pipe replacement work under blanket and bid contracts. Included in this improvement were revenues of $7.3 million in the second quarter of 2020 from storm-related electric services work that did not occur during the same quarter in the prior year. Centuri achieved the overall increase in revenues despite a temporary shut-down for certain crews in response to local government requirements to postpone non-essential business services and precautions to ensure employee safety during the COVID-19 outbreak.
Utility infrastructure services expenses increased $28 million in the second quarter of 2020 when compared to the prior-year quarter, due primarily to costs to complete additional electric infrastructure and pipe replacement work, partially offset by increased productivity and efficiencies on electrical infrastructure projects and lower fuel and overtime costs. Additionally, Centuri’s mix of work was favorably impacted by certain restrictions on service-line related work due to COVID-19, which allowed for an increase in main line replacement work, and resulted in greater production efficiency and reduced travel time. Centuri also benefited from $3.4 million in wage subsidies from the Canadian government amidst the COVID-19 environment. These funds were recorded as a reduction in wage-related expenses, included within this line item. Offsetting some of these improvements were certain increased costs and workforce inefficiencies associated with the continued impact of the COVID-19 pandemic.
Depreciation and amortization expense increased $3 million between quarters attributable to additional equipment purchased to support the growing volume of work being performed, primarily at Linetec.
Net interest deductions decreased $1.2 million between periods due primarily to lower rates associated with outstanding borrowings under the $590 million secured revolving credit and term loan facility.










39

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020


Results of Utility Infrastructure Services
Six-Month Analysis

Six Months Ended
June 30,
(Thousands of dollars)20202019
Utility infrastructure services revenues$828,306  $767,162  
Operating expenses:
Utility infrastructure services expenses749,538  702,664  
Depreciation and amortization46,947  40,926  
Operating income31,821  23,572  
Other income (deductions)(156) 398  
Net interest deductions5,138  6,726  
Income before income taxes26,527  17,244  
Income tax expense8,085  5,006  
Net income18,442  12,238  
Net income attributable to noncontrolling interest2,379  1,351  
Contribution to consolidated net income attributable to Centuri$16,063  $10,887  
Utility infrastructure services revenues increased $61.1 million during the first six months of 2020 when compared to the same period in the prior year due to a higher volume of electric infrastructure and pipe replacement work under blanket and bid contracts. Electric infrastructure work composed $53.9 million of that increase, including the storm-related work noted earlier. The improvement was achieved despite a temporary shut-down for certain crews in response to local government requirements to postpone non-essential business services and precautions to ensure employee safety during the COVID-19 outbreak. Results during the first six months of 2019 reflected incremental profit from customer requested strike support that did not recur in 2020.
Utility infrastructure services expenses increased $46.9 million during the first six months of 2020 when compared to the same period in the prior year, due primarily to increased costs to complete additional electric infrastructure and pipe replacement work, partially offset by the increased productivity and efficiencies on electrical infrastructure projects and lower fuel and overtime costs noted for the second quarter of 2020. Additionally, the improved mix of work during the second quarter for main line replacements provided cost efficiencies. Offsetting these favorable impacts were certain increased costs and workforce inefficiencies associated with the continued impact of the COVID-19 pandemic.
Depreciation and amortization expense increased $6 million between periods attributable to additional equipment purchased to support the growing volume of work being performed, primarily at Linetec.
Net interest deductions were lower during 2020 due to lower rates associated with outstanding borrowings under the $590 million secured revolving credit and term loan facility.
40

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020March 31, 2021

Results of Utility Infrastructure Services
Twelve-Month Analysis
Twelve Months Ended June 30,Twelve Months Ended March 31,
(Thousands of dollars)(Thousands of dollars)20202019(Thousands of dollars)20212020
Utility infrastructure services revenuesUtility infrastructure services revenues$1,812,122  $1,634,226  Utility infrastructure services revenues$1,978,770 $1,771,609 
Operating expenses:Operating expenses:Operating expenses:
Utility infrastructure services expensesUtility infrastructure services expenses1,620,101  1,478,730  Utility infrastructure services expenses1,745,729 1,592,076 
Depreciation and amortizationDepreciation and amortization93,638  72,162  Depreciation and amortization98,548 90,618 
Operating incomeOperating income98,383  83,334  Operating income134,493 88,915 
Other income (deductions)Other income (deductions)(88) 529  Other income (deductions)(67)(651)
Net interest deductionsNet interest deductions12,49814,412  Net interest deductions7,99213,716 
Income before income taxesIncome before income taxes85,797  69,451  Income before income taxes126,434 74,548 
Income tax expenseIncome tax expense24,47720,299  Income tax expense34,47721,718 
Net incomeNet income61,320  49,152  Net income91,957 52,830 
Net income attributable to noncontrolling interestNet income attributable to noncontrolling interest3,7391,523  Net income attributable to noncontrolling interest7,7502,599 
Contribution to consolidated net income attributable to CenturiContribution to consolidated net income attributable to Centuri$57,581  $47,629  Contribution to consolidated net income attributable to Centuri$84,207 $50,231 
Utility infrastructure services revenues increased $177.9$207.2 million, overallor 12%, in the current twelve-month period compared to the corresponding period of 2019,2020, primarily due to incremental electric infrastructure revenues of $165.7 million from expansion of work with existing customers and securing work with new customers. Included in the incremental electric infrastructure revenues during the twelve-month period of 2021 was $90.5 million from emergency restoration services performed by Linetec, (acquiredfollowing hurricane, tornado, and other storm damage to customers’ above-ground utility infrastructure in November 2018)and around the Gulf Coast and eastern regions of $165.5the U.S., as compared to $13.2 million as well asin similar services during the twelve-month period in 2020. Centuri’s revenues derived from storm-related services vary from period to period due to the unpredictable nature of weather-related events. The remaining increase in revenue was attributable to continued growth with existing gas infrastructure customers under master service and bid agreements. Partially offsetting these increases were decreased revenues from certain non-routine or non-recurring projects, including customer-requested support in 2018 and early 2019 during strike-related and emergency response situations, in addition to a multi-year water pipe replacement project that expired in July 2019 and was not renewed. The prior-year period also included the settlement of an earlier contract dispute related to that project ($9 million). Implementation of new professional engineering stamp requirements for operating locations within certain eastern states in the U.S. resulted in lower revenues during the current period as Centuri worked with customers to adopt the new requirements.
Utility infrastructure services expensesexpenses increased $141.4$153.7 million between between periods, primarilylargely due to incremental expenses related to Linetec of $137.7 million, along with additional electric infrastructure work of $91.4 million, including costs associated with storm restoration work, as well as costs to complete additional gas and pipe replacement workelectric infrastructure work. These costs were mitigated by increased productivity and higher labor-related operating expenses to support growth.efficiencies in completing electrical infrastructure projects and by lower fuel costs as a percentage of revenues. Included in total Utility infrastructure services expenses were general and administrative costs, which increased $2$26.1 million in the twelve-month period ended June 2020March 2021 when compared to the corresponding period ended June 2019.March 2020, due to higher payroll and operating costs associated with continued growth of the business and higher profit-based incentive compensation costs. Offsetting impacts include dealthese increases were lower insurance costs from the acquisition of Linetec during 2018 ($6.9 million). Net gainsfavorable claims experience under Centuri’s self-insurance programs. Gains on sale of equipment (reflected as an offset to Utility infrastructure services expenses) were $4.9$3.3 million and $2.3$5.3 million for the twelve-month periods of 2021 and 2020, and 2019, respectively.
Depreciation and amortization expenseexpense increased $21.5$7.9 million between the current and prior-year period. The increase was primarily attributable to incremental costs of $6.3 million to support the incremental assets relatedelectric infrastructure work being performed, and to the acquisition of Linetec, providing $15.5 million of the increase in this category. Depreciation on additional property and equipment purchased to support the growing volume of work being performed composes the remainder of the increase.business overall.
Net interest deductionsdeductions decreased $1.9$5.7 million between between periods primarily due primarily to lower incremental borrowing rates associated with decreased outstanding borrowings under theCenturi’s $590 million secured revolving credit and term loan facility.
The income tax expense increase between periods reflects the increased level of pre-tax earnings.

4133

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Rates and Regulatory Proceedings
Southwest is subject to the regulation of the Arizona Corporation Commission (the “ACC”), the Public Utilities Commission of Nevada (the “PUCN”), the California Public Utilities Commission (the “CPUC”), and the Federal Energy Regulatory Commission (the “FERC”).
General Rate Relief and Rate Design
Rates charged to customers vary according to customer class and rate jurisdiction and are set by the individual state and federal regulatory commissions that govern Southwest’s service territories. Southwest makes periodic filings for rate adjustments as the cost of providing service (including the cost of natural gas purchased) changes, and as additional investments in new or replacement pipeline and related facilities are made. Rates are intended to provide for recovery of all commission-approved costs and a reasonable return on investment. The mix of fixed and variable components in rates assigned to various customer classes (rate design) can significantly impact the operating margin actually realized by Southwest. Management has worked with its regulatory commissions in designing rate structures that strive to provide affordable and reliable service to its customers while mitigating volatility in prices to customers and stabilizing returns to investors. Such rate structures were in place in all of Southwest’s operating areas during all periods for which results of natural gas operations are disclosed above.
Arizona Jurisdiction
Arizona General Rate Case. OnIn May 1, 2019, Southwest filed a general rate case application requesting to increase revenue by approximately $57 million to update the cost of service to reflect recent U.S. tax reform changes, includingincorporating the return of excess deferred income taxes to customers, and to reflect capital investments, of approximately $670 million, including certain post-test year additions includingand the southern Arizona LNG facility discussed below.liquefied natural gas (“LNG”) facility. The application also includesincluded a proposed 10.3% return on equity (“ROE”) relative to a capital structure of 51.1% equity. AtSouthwest updated its request to reflect the time of the filing, the Company estimated the return of approximately $20.6 millionactual amortization of excess accumulated deferred income taxes. Following the original filing, in October 2019, Southwest filed an amendmenttaxes (“EADIT”) resulting from U.S. tax reform, and to its application, updating for $5.7 million in actual amortization of accumulated excess deferred income taxes known after the Company’s 2018 federal income tax return was filed in 2019. It was at such point that the actual amount could be computed based on the prescribed methodology for determining the amount that could be returned to customers. The difference of $14.9 million would result in an increase in revenue and income tax expense, thereby having no impact on earnings overall. In association with the amendment, Southwest also includedinclude additional post-test year plant in the amount of $124.5 million associated with its COYLcustomer-owned yard line (“COYL”) and VSPvintage steel pipe (“VSP”) programs, discussed further below. The amendment overall increased the deficiency by $36 million, to $93 million. Through the discovery and testimony exchanges, Southwestmillion, which was further updated to $90.6 million based on certain aspects of its cost of service, including a revised proposed ROE of 10.15%, resulting in an updated proposed increase of $90.6 million.. The request overall includesand amendments included the retention of a fully decoupled rate design, other previously approved regulatory mechanisms, and a new infrastructure tracking mechanism for specific plastic pipe. It also includespipe, in addition to a proposal for a renewable natural gas (“RNG”) program that authorizes Southwest to purchase renewable natural gas for its customers and to recover the cost as part of its purchased gas adjustmentPGA mechanism. A hearing in this matter was previously scheduled for April 2020; however, due to the COVID-19 pandemic, the hearing was conducted during June and July. Prior to the start of the hearing, Southwest entered into a stipulation with the parties tofor certain aspects of the case, on a number of issues. As part of the stipulation, the parties agreedagreeing to continue the COYL program; to establish a Tax Expense Adjustor Mechanism to track annual changes in the amortization of excess accumulated deferred income taxes (“EADIT”)EADIT, as well as any future changes in the federal tax rate; to incorporate various tariff proposals; and to include a resolution for a 10-year amortization period forof EADIT associated with deemed “unprotected” plant.plant; and to incorporate various tariff proposals. EADIT associated with “protected” plant relates to timing differences from using accelerated depreciation for tax purposes and another method for book purposes, and “unprotected”unprotected amounts relate to all other timing differences. Legal briefs will continue through mid-September,Following the hearing and legal briefing process, this requested amount was further updated to $80.7 million to reflect agreements by the parties on the treatment of EADIT and certain other ratemaking adjustments.
A final decision was issued in December 2020, with new rates becoming effective in January 2021, resulting in an overall annual revenue increase of $36.8 million, and the continuation of both full revenue decoupling and the COYL program. An ROE of 9.1% was approved with a Commissioncapital structure comprised of 48.9% long-term debt and 51.1% common equity. The overall increase reflects the final ROE and the inclusion of a six-month period covering certain post-test year plant additions, as well as the post-test year plant addition of the LNG facility. See additional discussion related to these programs below. The continuation of the property tax tracker was supported in the final decision, expected duringas was the fourth quarter.Tax Expense Adjustor Mechanism (noted above). While the RNG proposal was not approved as part of the decision, the ACC agreed to conduct a workshop to further explore the role of RNG in Arizona.
Delivery Charge Adjustment. The annual Delivery Charge Adjustment (“DCA”) is filed each April, which along with other reporting requirements, contemplates a rate to recover the over- or under-collected margin tracker amounts based on the balance at the end of the preceding calendar year. The DCA rate adjustment request filed in April 2018 reflected the December 31, 2017 balance, but was later updated to include the balance at December 31, 2018. After a one-time modification to reflect benefits attributable to the impact of U.S. tax reform on the balance then existing, the ACC approved an annualized recovery of $69 million, with the associated rate effective in May 2019. In the process to address the 2019 activity, in April 2020, Southwest filed a request to adjust the existing rate to consider the 14-month period of January 1, 2019 through February 29, 2020, proposing a rate of $0.00655 per therm based on an ending balance of approximately $3.5 million. Although Commission Staff concurred with Southwest’s proposed rate, the ACC ultimately elected to reduce the rate to zero in an effort to provide some measure of customer relief in light of current issues related to the COVID-19 pandemic, and at the time of both the April filing and the ACC decision, the balance was a liability (in an over-recovered status). Any over-or under-collection will be addressed in Southwest’s next annual filing.
42

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30,Activity through the remainder of 2020

Tax Reform. In February 2018, the ACC directed all Arizona utilities to address tax savings from the enactment of U.S. tax reform beginning January 1, 2018, through one of various means. In April 2018, Southwest filed an application with the ACC, requesting approval for a tax refund process or, in the alternative, the authority to file a general rate case to reflect the impacts of tax reform. Ultimately, Southwest was instructed to refund customers $20 million annually, as compared to rate levels established in the previously concluded general rate case, until cost-of-service rates are updated in association with the pending general rate case. The current method to return this amount (in advance of the conclusion of the current general rate proceeding) is through a per-therm surcredit. Southwest has been tracking monthly differences between amounts expected to be returned and amounts actually returned to customers during 2018 and 2019, and continuing in 2020, which has resulted in a modest under-collected balance at December 31, 2020, and an assetover-collected balance of $1.6$9.5 million exists as of June 30, 2020.March 31, 2021.
Liquefied Natural Gas (“LNG”)LNG Facility. In January 2014, Southwest filed an application with thesought ACC seeking preapproval to construct, operate, and maintain a 233,000 dekatherm LNG facility in southern Arizona. This facility is intended to enhance service reliability and flexibility related to natural gas deliveries in the southern Arizona area by providing a local storage option, and to be operated by Southwest, and connected directly to its Southwest’s
34

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

distribution system. Southwest was ultimately granted approval for construction and deferral of costs not to exceed $80 million. Construction began during the third quarter of 2017 and thecosts. The facility was placed in service in December 2019. Southwest incurred approximately $75.3 million inThe capital expenditures towardcosts and the project (including land acquisition costs), which areoperating expenses associated with plant operation were considered and approved as part of Southwest’s pendingrecently approved general rate case. In additionDue to tracking the revenue requirementtiming of the approximate $12 million in operating costs incurred following the in-service date, a proposal to recover the associated with the capital investment in a regulatory asset operating expenses associated with the plant are also authorized tobalance will be included in a regulatory asset, which is also being addressed as part of the pendingnext Arizona general rate case.case application.
Customer-Owned Yard Line (“COYL”)COYL Program. Southwest received approval, in connection with its 2010 Arizona general rate case, to implement a program to conduct leak surveys, and if leaks were present, to replace and relocate service lines and meters for Arizona customers whose meters were set off from the customer’s home, representing a non-traditional configuration. In 2014, the ACC approved a “Phase II” of the COYL program, which included the replacement of non-leaking COYLs. The surcharge isAnnual surcharges were designed to collect the annual revenue requirement asassociated with the program progresses.program. In the filing made ina February 2019 filing, Southwest requested to increase its surcharge to recover a revenue requirement of $6.7 million (an increase of $3.2 million) related to the revenue requirement associated with $26.6 million in capital projects completed in 2018. The ACC ultimately issued an Order in October 2019 authorizing Southwest to retain the existing annual surcharge of $3.5 million and indicatingin place, while it would reviewreviewed the program as part of the pending general rate case. As discussed above, the partiesSouthwest also included an estimated $21.1 million related to the pending2019 COYL capital projects as part of the rate case. Parties to the rate case stipulated to continue the COYL program. Southwest also proposed to have the ACC review an estimated $21.1 million of 2019 COYL capital projects,program and if authorized, to also render a decision regarding cost recovery as part of the pending rate case. As part of their filed testimony in the current case, the ACC Staff and the consumer advocate recommended recovery of thisthe plant as part of Southwest’s filed post-test year plant adjustment, with inclusion of related amounts in base rates,rates. Further consideration in the rate case decision limited post-test year plant to six months (inclusive of COYL plant), and also supportlimited future COYL activity to the continuationreplacement of leaking COYLs, or in cases when other replacement activity is taking place in the vicinity. A filing in the second quarter of 2021 will propose the recovery of the revenue requirement associated with the 2019 and 2020 COYL program.activity and plant placed in service following the six-month post-test year inclusion period of the recently concluded rate case.
Vintage Steel Pipe (“VSP”)VSP Program. Southwest received approval, in connection with its 2016 Arizona general rate case, to implement a VSP replacement program. Southwest currently hasprogram, due to having a substantial amount of pre-1970s vintage steel pipe in Arizona. As part of the program, Southwest proposed to startbegin replacing the pipe on an accelerated basis and to recover the costs through an annual surcharge filing. A surcharge related thereto has been customarily designed to be revised annually as the program progressesOnce implemented, surcharges to collect the annual revenue requirement associated with the related capital expenditures.expenditures were designed to be revised annually under the program. In the most recent VSP filing, in February 2019, Southwest requested to increase its surcharge revenue by $9.5 million (to $11.9 million) related to 2018 expenditures. Southwest replacedassociated with the replacement of approximately $100 million of VSP in connection with 2018 VSP capital projects. The ACC issued an Order in October 2019 authorizing Southwest to retain the currentexisting annual surcharge, of $2.4 million and indicated it would review the program as part of the pendinggeneral rate general case. Southwest also proposed to have the ACC review an estimated $103.4 million of 2019 VSP capital projects and if authorized, to also render a decision regarding cost recovery as part of the pending rate case. As part of their filed testimony innoted above, the current case, the ACC Staff and the consumer advocate recommended recovery of this plant as part of Southwest’s filed post-test year plan adjustment, with inclusion of related amounts in base rates. The continuation of the VSP is pending a decision in the current general rate proceeding.case provided for a post-test year plant adjustment period of six months (inclusive of VSP). However, the ACC ultimately decided to discontinue the accelerated VSP program at this time. A filing in the second quarter of 2021 will propose the recovery of the revenue requirement associated with the 2019 and 2020 VSP activity and plant placed in service following the six month post-test year inclusion period of the recently concluded rate case.
Customer Data Modernization Initiative. Southwest has embarked on an initiative to replace its customer service system and gas transaction systems, each of which isto be utilized to support all Southwest service territories. Combined, these undertakings are referred to as the Customer Data Modernization Initiative (the “CDMI”). In March 2019, Southwest filed an application with the ACC seeking an accounting order which, if approved, would authorize Southwest to track and defer all costs associated with the CDMI to mitigate adverse financial implications associated with this multi-year initiative. The commission issued a decision in this matter in early April 2021 denying Southwest’s request for a regulatory asset, indicating that the requested recovery mechanism was not warranted. Therefore, the costs will be considered as part of a future general rate proceeding. The total cost for the CDMI iswas estimated at approximately $174 million, approximately $96 million of which would be allocable to the Arizona rate jurisdiction. The initiative is currently expected to be completedcustomer service system was placed in service in May 2021 and the first half ofgas transaction system will follow later in 2021. A hearing in this matter was held in June 2020. Legal briefs will continue through mid-September, with a Commission decision expected in the fourth quarter.
43

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

California Jurisdiction
California General Rate Case. Southwest’s existing rates became effective June 2014, and included a Post-Test Year (“PTY”) Ratemaking Mechanism, which allowed for attrition increases of 2.75% annually for 2015 through 2018, after which time new rates from a subsequent rate case cycle would have been expected to be in effect. In December 2016,August 2019, Southwest filed to modify the earlier (2014)a general rate case decisionbased on a 2021 test year, seeking authority to increase rates in its California rate jurisdictions, after being granted earlier permission to extend the rate case cycle by two years and received CPUC approval in June 2017, including extension of the annualcontinue its 2.75% PTYpreviously approved Post-Test Year (“PTY”) attrition adjustments for 2019 and 2020.
On August 30, 2019, Southwest filed the previously deferred general rate case, based on a test year of 2021, seeking authority to increase rates in its California rate jurisdictions. The proposed combined revenue increase of $12.8 million was net of a $10.9 million revenue reduction associated with changes from U.S. tax reform, which included the amortization of $9.8 million (approximately $2 million annually over five years) associated with the difference in authorized income tax expense and actual incurred income tax expense for years 2019 and 2020, which when returned willwould impact cash flows, but would not be expected to have an impact on earnings overall.earnings. Southwest has been trackingtracked those amounts, as directed, and reservingreserved them for return to customers. The overall revenue request also included $1.6 million of excess accumulated deferred income taxesEADIT proposed to be returned to customers each year until the amount is reset as part of a future rate case. Southwest’s proposal included an ROE of 10.5%, relative to a 53% equity ratio; continuation of annual post-test year margin adjustments of 2.75%; implementation of various safety-related programs, including a targeted pipe replacement program and a meter
35

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

protection program (with a combination of measures, such as snow sheds, excess flow valves, upgraded meter set piping and upgraded Encoder Receiver Transmitter protocol); as well as an expansion of the school COYL replacement program. Ahead of hearings scheduled to begin in late June,
Southwest reached an agreement in principle with the Public Advocate’s Office for settlement of the pending general rate case.
The agreement in principle includescase, which was unanimously approved by the Commission on March 25, 2021, including a $6.4 million total combined revenue increase with a 10% ROE, relative to a 52% equity ratio. Approximately $4 million of the original proposed increase of $12.8 million iswas associated with a North Lake Tahoe project that willwould not ultimately be completed by the beginning of 2021; consequently, the parties agreed to remove it from the base rate increase and instead Southwest will recoverprovide for recovery of the cost of the project through a surcharge as described below.future surcharge. The agreementdecision also maintains Southwest’s existing 2.75% annual attrition adjustments, the continuation of the pension balancing account, and approves thea proposed increase in the residential basic service charge from the existing $5.00 to $5.75 per month. The partiesIt also agreed toincludes a cumulative total of $119 million over the five-year rate cycle to implement risk-informed proposals, consisting of the proposed risk-informed decision making proposals, which consist of aschool COYL replacement, meter protection, and pipe replacement programs. Southwest is also authorized to implement a surcharge annually to recover the cost of these programs. The agreement in principle was filed in early August 2020, and if approved,Although new rates wouldwere originally anticipated to be expectedin place by January 1, 2021, in light of an administrative delay, Southwest was granted authority to become effectiveestablish a general rate case memorandum account to track the margin/revenue impacts related to the delay in Januarythe implementation of new rates. Such rates were ultimately implemented April 1, 2021.
Attrition Filing. In November 2019, Southwest made its latest annualSince Southwest’s general rate case test year is 2021, there is no separate attrition increase for 2021; however, the PTY attrition filing, requesting annual revenue increases of $2.06 million2.75% will continue in southern California, $556,000 in northern California, and $278,000 for South Lake Tahoe. This filing was2022, as approved in December 2019 and rates were made effective in January 2020. At the same time, rates were updated to recover the regulatory asset associated with the revenue decoupling mechanism, or margin tracker.most recent rate case decision.
Greenhouse Gas (“GHG”) Compliance. California Assembly Bill Number 32 and the regulations promulgated by the California Air Resources Board, require Southwest, as a covered entity, to comply with all applicable requirements associated with California GHG emissions reporting and the California Cap and Trade Program. The CPUC issued a decision in March 2018 adopting an allocation methodology to distribute the net revenues or costs for years 2015-2017 beginning in the second quarter of 2018.costs. Southwest began amortizing its then existing net cost balance over a 12-month period with recovery rates effective July 2018 for all applicable rate schedules. In addition, for years 2019-2020, the decision adopted an allocation methodology to distribute the revenue proceeds through a California Climate Credit to active residential customers in April of each year, following initial required credits in October 2018. Amounts distributed in April 2019 and 2020 were comparable. GHG compliance costs recovered through rates (including transportation customer rates) have no impact on earnings.
Renewable Natural Gas. In February 2019, Southwest filed an application that, among other provisions, seeksthings, sought to formally allow the inclusion of renewable natural gas (or biomethane) as a potentialan includible component of Southwest’s gas supply portfolio through the Biomethane Gas Program (“BGP”). This proposal iswas designed to further the goals of the California Global Warming Solutions Act of 2006, the California Low Carbon Fuel Standard, Senate Bills 1383 and 1440, as well as current or future legislative or regulatory efforts to reduce greenhouse gas emissions. Implementation of the BGP addresses cost recovery as part of Southwest’s existing Gas Cost Incentive Mechanism related to the purchase or sale of biomethane. The CPUC issued a final decision approving the proposal in March 2020.
Customer Data Modernization Initiative. OnIn April 26, 2019, Southwest filed an application with the CPUC seeking authority to establish a two-way, interest bearing balancing account to record costs associated with the CDMI to mitigate adverse financial implications associated with this multi-year project. Approximately $19 million of the estimated $174 million costtotal for the
44

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

CDMI would be allocable to the California rate jurisdiction. Southwest filed a separate request to establish a memorandum account while the CPUC considered its application request to establish athe two-way balancing account. Effective October 2019, the CPUC granted Southwest’s memorandum account request, which would allow Southwest to track costs, including operations and maintenance costs and capital-related costs, such as depreciation, taxes, and return associated with California’s portion of the CDMI. The balance tracked in the memorandum account would be transferred to the two-way balancing account, if approved. In January 2020, Southwest and the Public Advocates Office reached a settlement agreement to adopt Southwest’s Application for Authority to Implementand the CDMI. The CPUC issued a final decision approving the settlement agreement as filed in July 2020. A rate to begin recovering the balance accumulated through June 30, 2020 was established and made effective September 1, 2020, further updated in January 2021, and will be updated annually thereafter each January.
Emergency Relief Program Related to COVID-19. OnIn March 25, 2020, in light of the COVID-19 pandemic, Southwest filed an Advice Letterrequested to establish a memorandum account to track costs related toas part of customer protections under Emergency Relief regulations implemented in California in 2019 in(in the event of a state or federal declared emergency or disaster.disaster). The CPUC passed an emergency resolution on April 16, 2020 authorizing and directing utilities to implement customer protections and to establish memorandum accounts to track the financial impacts of complying with the resolution. On May 1, 2020, Southwest filed an Advice Letterrequested to establish a COVID-19 Pandemic Protections Memorandum Account (“CPPMA”) to record all incremental costs and lost revenues incurred by Southwest associated with its implementation of the COVID-19 customer protections as outlined in the CPUC resolution. The customer protections were retroactively applied to March 4, 2020, the date Governor Gavin Newsom declared a state of emergency related to COVID-19. The CPPMA iswas originally effective March 4, 2020 through April 16, 2021, but was extended through June 30, 2021. These customer protections focus on flexible payment plan options, additional
36

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

protections for income-qualified customers, as well as the suspension of disconnections for non-payment and the waiver of deposit and late fee requirements. Tracked amounts will be considered by the CPUC for future recovery.
Nevada Jurisdiction
Nevada General Rate Case. Southwest filed a general rate case application with the PUCN onin February 28, 2020, which requested a statewide overall general rate increase of approximately $38.3 million. The request seekssought an ROE of 10% relative to a proposed capital structure of 50% equity and continuation of the General Revenues Adjustment (“GRA”) mechanism (full revenue decoupling). The request also proposesproposed the recovery of previously excluded costs attributable to several software applications. OnIn June 26, 2020, Southwest submitted its certification filing to update certain balances through May 31, 2020, which increased its overall proposed rate increase to $38.5 million. Commission Staff and the Bureau of Consumer Protection filed testimony on July 24,The commission issued its final order in September 2020, recommendingwhich provided for an overallauthorized combined revenue increase of approximately $21.6$23 million for northern and approximately $20 million, respectively. A substantial portionsouthern Nevada and continuation of the difference betweencurrently authorized 9.25% ROE, with a capital structure of 49.26% equity and 50.74% debt. Southwest’s request and the proposals of these parties relatesexisting GRA was authorized to differences in the recommended ROE. No party contested thecontinue without modification. Full cost recovery of the remaining balancesunamortized balance of the previously excluded software applications or the continuation of the GRA. Included in the Commission’s Staff recommended increase is approximately $585,000 related to incremental operation and maintenance expenses related to Southwest’s CDMI (discussed below), providing an opportunity for recovery of these costs following the denial of Southwest’s request for deferred accounting treatment in 2019. A hearing in this matter is scheduled for August 2020.
In December 2018, the PUCN issued a rate case decision inprojects from the previous general rate case application, whichwas authorized a ROEin this case, along with the inclusion of 9.25% relative toall proposed Gas Infrastructure Replacement (“GIR”) and Mesquite Expansion projects in rate base, and full recovery of test year and certification operations and maintenance expenses associated with the Company’s proposed capital structure of 49.66% equity applicable to both southern and northern Nevada and provided for an overall revenue increase of $9.5 million in southern Nevada and a revenue decrease in northern Nevada of $2 million.CDMI project. Rates from this proceeding originally became effective in January 2019.October 2020.
As part of that proceeding,In association with the previous Nevada rate case decision in December 2018, management filed a request forrequested reconsideration of several rate case issues duringin the same month of effective rates, andcase; however, the PUCN Staff also filed for reconsideration, related to technical clarifications on the calculation of the intended results of the decision. The PUCN issued a decision regarding both petitions in February 2019 that modified certain parts of the original order, butultimately granted no further rate relief. The modified final decision resulted in a revenue increase of $9.2 million in southern Nevada and a revenue decrease in northern Nevada of $2.1 million. The decision included a reduction in depreciation expense of $800,000 and an increase in operating income of $7.9 million. The modified rates became effective in March 2019. Management decided to seek judicial review of the PUCN’s rate order, which was considered in January 2020. The District Court Judge deferred to the PUCN’s original findings. In March 2020, Southwest filed an appeal with the Nevada Supreme Court, which remains active; the resolution of which will likely take 12-24 months. Southwest expects considerationmonths from the date of the appeal to occur concurrently with the proceedings of the 2020 general rate case, a decision which is currently pending.appeal. 
General Revenues Adjustment. The continuation of the GRA was affirmed as part of the December 2018 rate case decision and is again being requested as part of Southwest’s pendingrecently concluded general rate case, application filed in Februaryeffective October 2020. Southwest makes Annual Rate Adjustment (“ARA”) filings to update rates to recover or return amounts associated with various regulatory mechanisms, including the GRA. In June 2019, Southwest made its 2019 Annual Rate Adjustment (“ARA”)annual filing, in which it requested to update the GRA to reflect the current balances in both southern and northern Nevada. This filing provided for a decrease of approximately $8 million for an over-collected balance in southern Nevada and an increase of approximately $2 million in northern Nevada. The proposed changes were approved, with rates effective January 2020. In May 2020, Southwest made its most recent ARA filing, which proposed an annualized margin decrease of $5.3 million in southern Nevada and an increase of $1.6 million in northern Nevada. The ARA filing was resolved through a settlement of the parties, in which the proposed changes associated with the GRA were approved, effective January 2021. While there is no impact to net income overall from adjustments to recovery
45

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

rates associated with the related regulatory balances, operating cash flows are impacted by such changes. In May 2020, Southwest made its 2020 ARA filing, which proposes annualized margin decreases of $5.3 million in southern Nevada and an increase of $1.6 million in northern Nevada.
Infrastructure Replacement Mechanism. In 2014, the PUCN approved final rules for the Gas Infrastructure Replacement (“GIR”)GIR mechanism, which defers and recoversprovides for recovery of certain costs associated with accelerated replacement of qualifying infrastructure that would not otherwise currently provide incremental revenues. Associated with the replacement of various types of pipe infrastructure under the mechanism (Early Vintage Plastic Pipe, COYL, and VSP), the related regulations provide Southwest with the opportunity to file a GIR “Advance Application” annually, generally in May, to seek preapproval of qualifying replacement projects.
Furthermore, a GIR Rate Applicationrate application is generally filed each October to reset the GIR recovery surcharge rate related to previously approved and completed projects, with new rates typically becoming effective each January. On October 1, 2019, Southwest filed a Rate Applicationrate application to reset the recovery surcharge to include cumulative deferrals through August 31, 2019. This surcharge rate became effective February 1, 2020, and is expecteddesigned to result in a reduction in annual revenue of approximately $5.3 million in southern Nevada and no incremental revenue in northern NevadaNevada. On September 30, 2020, Southwest filed its latest rate application to reset the recovery surcharge to include cumulative deferrals through August 31, 2020. The updated surcharge rate is expected to result in a reduction in annual revenue of approximately $11.8 million, and became effective January 2021.
Conservation and Energy Efficiency (“CEE”).Efficiency. The PUCN allows deferral (and later recovery) of approved conservation and energy efficiency costs, recovery rates for which are adjusted in association with ARA filings. In its June 2019, Southwest made its 2019 ARA filing, whichSouthwest proposed annualized margin increases of $3.2 million and $880,000 in southern and northern Nevada, respectively. However, Southwest entered into a stipulation and agreement to modify these amounts to $6.2 million and $1.1 million in southern and northern Nevada, respectively, which reflected the recovery of a related but separate program balance to be rolled into customer rates with the same effective date. The modification was approved, and rates became effective January 2020. In its May 2020, Southwest made its 2020 ARA filing, which proposesSouthwest proposed annualized margin decreases of $313,000 and $55,000 for southern and northern Nevada, respectively.respectively, which were approved and became effective January 2021.
Expansion and Economic Development Legislation. In January 2016, final regulations were approved by the PUCN associated with legislation (“SB 151”) previously introduced and signed into law in Nevada. The legislation authorized natural gas utilities
37

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

to expand their infrastructure to provide service to unserved and underserved areas in Nevada.
In November 2017, Southwest filed for preapproval of a project to extend service to Mesquite, Nevada, in accordance with the SB 151 regulations. Ultimately, the PUCN issued an order approving Southwest’s proposal to expand natural gas infrastructure and service to Mesquite.for the expansion. The order approved a capital investment of approximately $28 million and the construction of approximately 37 miles of distribution pipeline (including the approach main). The annual revenue requirement associated with the project is $2.8 million. A volumetric rate, was implemented October 1, 2019 to recover the cost and is applicable to all southern Nevada customers (including new customers in Mesquite). In, was implemented in October 2019 to recover the cost. Southwest’s May 2020, Southwest made its 2020 ARA filing, which proposesproposed an annualized margin increase of $185,000, which reflects the cumulative deferred revenue requirement associated with the Mesquite facilities that have beenwere placed in service through April 30, 2020. Following preliminary design, in February 2019,During 2020, Southwest begancontinued serving certain customers within Mesquite from an approved virtual“virtual” pipeline network, providing temporary natural gas supply using portions of the approved distribution system and compressed natural gas. It is estimated that constructionConstruction of the remaining approvedtap site, approach main, as well as distribution system to bring the permanent supply to Mesquite will bemains was completed and facilities were placed in service in the first quarter of 2021.December 2020.
In June 2019, Southwest filed for preapproval to construct the infrastructure necessary to expand natural gas service to Spring Creek, Nevada, and to implement a cost recovery methodology to timely recover the associated revenue requirement consistent with the SB 151 regulations. Expansion to the Spring Creek area near Elko, Nevada consists of a high-pressure approach main and associated regulator stations, an interior backbone, and the extension of the distribution system from the interior backbone system. The total capital investment iswas estimated to be $61.9 million. A stipulation in this matter was reached with the parties and approved by the PUCN in December 2019, which largely accepted Southwest’s proposal with modifications reflected in the rate recovery allocations split amongst northern Nevada, Elko, and Spring Creek expansion customers. Initial ground-breaking is expectedConstruction of the initial phase of the expansion began in the summerthird quarter of 2020, and service commenced to the first Spring Creek customers in December 2020.
Customer Data Modernization Initiative. In March 2019, Southwest filed a request seeking authority to establish a regulatory asset to defer the revenue requirement related to the CDMI to mitigate the financial attrition associated with thisthe multi-year project. Approximately $59 million of the estimated $174 million cost of the CDMI would be allocable to the Nevada rate jurisdictions. A hearing on this matter was held in August 2019 and the PUCN issued its decision in September 2019, denying Southwest’s request for regulatory asset treatment, finding that a general rate case isto be the most appropriate venueavenue to address such costs. In response to the PUCN’s decision, Southwest filed a Petition for Reconsideration in October 2019, which was denied. As part of Southwest’s recently approved general rate case filing, Southwest proposedwas authorized to establish a levelinclude CDMI operations and maintenance costs since the beginning of expense of approximately $1.2 million in ratesthe test year as part of its pending general rate case
46

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

filing.revenue requirement in the case. The customer service system portion of the project was placed in service in May 2021, and the gas transaction system portion is expected to be moved to productionfollow later in 2021. As described above, Southwest has a proposal to provide an opportunity to recover these costs as part of its pending rate case.
Regulatory Asset Related to COVID-19. The PUCN issued an order directing utilities within the state to establish regulatory asset accounts, effective March 12, 2020, the date that Governor Steve Sisolak declared a state of emergency related to COVID-19, to track the financial impacts associated with maintaining service for customers affected by COVID-19, including those whose service would have been otherwise terminated/disconnected, effective March 12, 2020, the date Governor Steve Sisolak declared a state of emergency related to COVID-19.disconnected. These costs will be considered by the PUCN for future recovery.
FERC Jurisdiction
General Rate Case. Paiute Pipeline Company (“Paiute”), a wholly owned subsidiary of Southwest, filed a general rate case with the FERC in May 2019. The filing fulfilled an obligation from the settlement agreement reached in the 2014 Paiute general rate case. In January 2020, Paiute reached an agreement in principle with the FERC Staff and intervenors to settle its most recent general rate case. In addition to continuing the term-differentiated rate structures with its shippers, the agreement requires Paiute’s three largest transportation customers and all of its storage customers to extend their service agreements to have primary terms of at least five years. The settlement will resultresulted in a revenue reduction of approximately $700,000 and is based on a 9.90% pre-tax rate of return. Also as part of this agreement, Paiute agreed not to file a rate case prior to January 1, 2022, but no later than May 31, 2025.
In January 2020, Paiute requested, and was granted, the authority to place the settlement rates into effect on an interim basis, effective February 2020. On March 30, 2020, Paiute filed the proposed settlement agreement with the FERC for review and approval. On July 6, 2020, the FERC issued a letter order approving the settlement. If no party requests rehearing within 30 days,settlement, and the order will becomebecame final on August 5, 2020.
38

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

PGA Filings
The rate schedules in all of Southwest’s service territories contain provisions that permit adjustment to rates as the cost of purchased gas changes. These deferred energy provisions and purchased gas adjustment clauses are collectively referred to as “PGA” clauses. Differences between gas costs recovered from customers and amounts paid for gas by Southwest result in over- or under-collections. Balances are recovered from or refunded to customers on an ongoing basis with interest. As of June 30, 2020, over-collectionsMarch 31, 2021, under-collections in each of Southwest’s service territories resulted in a liabilityan asset of $69.9$238.9 million on the Company’s and Southwest’s Condensed Consolidated Balance Sheets. The significant change in the PGA balance was due to incremental natural gas costs associated with an extreme weather event in the central U.S. in mid-February 2021. See also Deferred Purchased Gas Costs in Note 1 – Background, Organization, and Summary of Significant Accounting Policies in this quarterly report on Form 10-Q.
Filings to change rates in accordance with PGA clauses are subject to audit by state regulatory commission staffs. PGA changes impact cash flows but have no direct impact on profit margin. However, gas cost deferrals and recoveries can impact comparisons between periods of individual consolidated income statement components. These include Gas operating revenues, Net cost of gas sold, Net interest deductions, and Other income (deductions).
The following table presents Southwest’s outstanding PGA balances receivable/(payable):
(Thousands of dollars)(Thousands of dollars)June 30, 2020December 31, 2019June 30, 2019(Thousands of dollars)March 31, 2021December 31, 2020March 31, 2020
ArizonaArizona$(18,598) $(59,259) $(87,692) Arizona$194,446 $(3,901)$(17,538)
Northern NevadaNorthern Nevada(13,648) 11,894  9,967  Northern Nevada3,036 (8,601)(3,154)
Southern NevadaSouthern Nevada(32,867) 32,518  48,273  Southern Nevada31,849 (42,134)(2,585)
CaliforniaCalifornia(4,825) (1,496) (2,041) California9,555 2,053 (3,221)
$(69,938) $(16,343) $(31,493) $238,886 $(52,583)$(26,498)
Capital Resources and Liquidity
Historically, cash on hand and cash flows from operations have provided a substantial portion of cash used in investing activities (primarily for construction expenditures and property additions). In recent years, the CompanySouthwest has acceleratedundertaken significant pipe replacement activities to fortify system integrity and reliability, notablyincluding on an accelerated basis in association with certain gas infrastructure replacement programs as discussed previously.programs. This accelerated activity has necessitated the issuance of both debt and equity securities to supplement cash flows from operations. The Company endeavors to maintain an appropriate balance of equity and debt to maintainpreserve investment-grade credit ratings, which should minimize interest costs.
Cash Flows
Southwest Gas Holdings, Inc.:
Operating Cash Flows. Cash flows provided byfrom consolidated operating activities increased $97decreased $324 million in the first sixthree months of 20202021 as compared to the same period of 2019.2020. The improvementdecline in cash flows primarily resulted from collections of amounts under purchased gas adjustment mechanisms, (compared toincluding amounts refundedresulting from the temporary escalation in gas commodity prices during the first quarter of 2021 associated with the extreme cold temperatures in the prior year)central U.S. (see Note 1 – Background, Organization, and Summary of Significant Accounting Policies), an increaseand also from a decrease ($25 million) in
47

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

collections ($39 million) recoveries related to the Arizona decoupling mechanism balance between six-month periods, as well as increases from other working capital components. These impacts were partially offset by a $50 million supplemental contribution for pension funding made in January 2020 (included in Changes in other liabilities and deferred credits in the Condensed Consolidated Statements of Cash Flows of both the Company and Southwest). Customarily, differences between amounts Southwest pays to gas suppliers and amount included in customer rates to recover the cost of purchased gas under the purchased gas cost mechanisms has provided significant variability in operating cash flows betweenthree-month periods.
Investing Cash Flows. Cash used in consolidated investing activitieactivities decreased s decreased $66$56 million in the first sixthree months of 20202021 as compared to the same period of 2019.2020. The change was primarily due to a decrease in capital expenditures in both reportable segments in the first six months of 2020. Additionally, the prior-year period included $19.5 million for the remittance of purchase consideration previously held back in association with the 2018 Linetec acquisition.segments.
Financing Cash Flows. Net cash provided by consolidated financing activities increased $35$265 million in the first sixthree months of 20202021 as compared to the same period of 2019.2020. The change was primarily due to net proceeds of $447Southwest’s $250 million (after discount and fees) from the issuance of $450 million Senior Notes in June 2020 by Southwest, in which the funds were partially used to reduce the amounts then outstanding under its credit facility ($309 million); andTerm Loan issued in the prior year, Southwest used a portionfirst quarter of 2021 to fund the net proceeds fromincreased cost of natural gas supply noted above during the $300extreme cold weather event. Additionally, the Company issued $46 million Senior Notes issued in May 2019 to reduce amounts then outstanding under its credit facility and commercial paper program. Additionally, there was a decrease ($48 million) in issuances of common stock under the Company’s Equity Shelf Programits equity shelf program in the first halfthree months of 2020 compared2021. Other changes relate to issuances under programsborrowing and repayment activity related to the credit facilities between comparative periods in both segments, and proceeds from a $50 million equipment loan in the prior-year period. See Note 4 – Common Stock and Note 5 – Debt. Other outflows include the combined impacts of repayment and borrowings by Centuri under its secured credit and revolving credit facility, offset by $70 million in equipment loan proceeds.quarter.
During the sixthree months ended June 30, 2020,March 31, 2021, the Company also issued 86,00049,500 shares of common stock through the Dividend Reinvestment and Stock Purchase Plan, raising approximatelapproximately y $6 million, similar to amounts raised in the prior year period.$3.1 million.
The capital requirements and resources of the Company generally are determined independently for the natural gas operations and utility infrastructure services segments. Each business activity is generally responsible for securing its own external debt financing sources. However, the holding company may raise funds through stock issuance or other external financing sources. See Note 4 – Common Stock.
Southwest Gas Corporation:
Operating Cash Flows. Cash flows provided by operating activities increased $92 million in the first six months of 2020 as compared to the same period of 2019. The improvement in operating cash flows was attributable to collections of deferred purchased gas costs and recoveries related to the Arizona decoupling mechanism noted above, as well as other working capital components overall, partially offset by the supplemental contribution for pension funding described earlier.
Investing Cash Flows. Cash used in investing activities decreased $6 million in the first six months of 2020 as compared to the same period of 2019. The change was primarily due to a decrease in capital expenditures in 2020 offset by a decrease in utility customer advances toward capital projects.
Financing Cash Flows. Net cash provided by financing activities increased $53 million in the first six months of 2020 as compared to the same period of 2019. The increase was primarily due to the issuance of $450 million Senior Notes in the current period, net of amounts used to reduce the amounts outstanding under Southwest’s credit facility, compared to the prior year $300 million Senior Notes issuance and related credit facility and commercial paper program repayments. See Note 5 – Debt. The combined impact of dividends and contributions to/from the parent holding company resulted in a reduction in financing cash flows.
Gas Segment Construction Expenditures and Financing
During the twelve-month period ended June 30, 2020, construction expenditures for the natural gas operations segment were $768 million. The majority of these expenditures represented costs associated with scheduled and accelerated replacement of existing transmission, distribution, and general plant. Cash flows from operating activities of Southwest were $460 million during this time, and provided approximately 53% of construction expenditures and dividend requirements.
Management estimates natural gas segment construction expenditures during the three-year period ending December 31, 2022 will be approximately $2.1 billion. Of this amount, approximately $700 million is scheduled to be incurred in 2020. Southwest plans to continue to request regulatory support as necessary and appropriate to accelerate projects that improve system flexibility and reliability. Southwest may expand existing, or initiate new, programs. Significant replacement activities are currently expected to continue well beyond the next few years. See also Rates and Regulatory Proceedings for discussion of Nevada infrastructure, Arizona COYL and VSP programs, and Spring Creek in Nevada. During the three-year period, cash flows from operating activities of Southwest are expected to provide approximately 50% of the funding for gas operations total
4839

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

financing sources. However, the holding company may raise funds through stock issuances or other external financing sources. See Note 4 – Common Stock.
Southwest Gas Corporation:
Operating Cash Flows. Cash flows from operating activities decreased $354 million in the first three months of 2021 as compared to the same period of 2020. The decline in operating cash flows was primarily attributable to the impacts related to deferred purchased gas costs and the Arizona decoupling mechanism noted above.
Investing Cash Flows. Cash used in investing activities decreased $44 million in the first three months of 2021 as compared to the same period of 2020. The change was due to a decrease in capital expenditures in 2021. See also Gas Segment Construction Expenditures and Financing below.
Financing Cash Flows. Net cash provided by financing activities increased $304 million in the first three months of 2021 as compared to the same period of 2020. The increase was primarily due to Southwest’s $250 million Term Loan issued in the first quarter of 2021 to fund the increased cost of natural gas supply noted above related to the extreme cold weather event. Additionally, in the prior-year period, Southwest had more repayment activity for the portion of its revolving credit facility that is designated for working capital purposes. See Note 5 – Debt.
Gas Segment Construction Expenditures and Financing
During the twelve-month period ended March 31, 2021, construction expenditures for the natural gas operations segment were $647 million. The majority of these expenditures represented costs associated with scheduled and accelerated replacement of existing transmission, distribution, and general plant.
Management estimates natural gas segment construction expenditures during the three-year period ending December 31, 2023 will be approximately $2.1 billion. Of this amount, approximately $700 million is scheduled to be incurred in 2021. Southwest plans to continue to request regulatory support to undertake projects, or to accelerate projects as necessary, for the improvement of system flexibility and reliability, or to expand, where relevant, to unserved or underserved areas. Southwest may expand existing, or initiate new, programs. Significant replacement activities are expected to continue well beyond the next few years. See also Rates and Regulatory Proceedings. During the three-year period, cash flows from operating activities of Southwest are expected to provide approximately 50% of the funding for gas operations and total construction expenditures and dividend requirements. Any additional cash requirements, including construction-related and paydown or refinancing of debt, are expected to be provided by existing credit facilities, equity contributions from the Company, and/or other external financing sources. The timing, types, and amounts of any additional external financings will be dependent on a number of factors, including the cost of gas purchases, conditions in the capital markets, timing and amounts of rate relief, timing differences between U.S. federal taxes embedded in customer rates and amounts implemented under tax reform,of surcharge collections from, or amounts returned to, customers related to other regulatory mechanisms and programs, as well as growth levels in Southwest’s service areas and earnings. External financings couldmay include the issuance of debt securities, bank and other short-term borrowings, and other forms of financing.
As noted earlier, in June 2020, Southwest issued $450 million aggregate principal amount of 2.20% Senior Notes at a discount of 0.126%. The notes will mature in June 2030. A portion of the net proceeds was used to reduce borrowings under Southwest’s credit facility. Additionally, Southwest intends to use a portion of the net proceeds from the issuance to redeem the 4.45% Notes. On July 31, 2020, holders of the 4.45% Notes due in December 2020 were notified of Southwest’s intention to redeem the notes in full on September 1, 2020 at a redemption price of 100% plus accrued and unpaid interest.
In May 2019, the Company filed with the SECSecurities and Exchange Commission (the “SEC”) an automatic shelf registration statement for the offer and sale of up to $300 million of common stock from time to time in at-the-market offerings under the prospectus included therein in accordance with the Sales Agency Agreement, dated May 8, 2019, between the Company and BNY Mellon Capital Markets, LLC (the “Equity Shelf Program”).LLC. The Company issued $50the remaining capacity ($46 million) under this equity program during the quarter ended March 31, 2021. During the twelve months ended March 31, 2021, 2,623,469 shares were issued in at-the-market offerings at an average price of $66.96 per share with gross proceeds of $175.7 million, agent commissions of $1.8 million, and net proceeds of $173.9 million under this multi-year program duringequity shelf program.
In April 2021, the second quarterCompany entered into a Sales Agency Agreement between the Company and BNY Mellon Capital Markets, LLC and J.P. Morgan Securities LLC for the offer and sale of 2020; approximately $126up to $500 million is availableof common stock from time to time in at-the-market offerings under the program as of June 30, 2020.related prospectus supplement filed with the SEC the same month. Net proceeds from the sales of shares of common stock under the Equity Shelf Programthis equity shelf program are intended for general corporate purposes, including the acquisition of property for the construction, completion, extension, or improvement of pipeline systems and facilities located in and around the communities served by Southwest.
DuringSouthwest, as well as for the twelve months ended June 30, 2020, 1,325,796 shares were issued in at-the-market offerings at an average pricerepayment or repurchase of $74.93 per share with gross proceeds of $99.3 million, agent commissions of $993,000, and net proceeds of $98.3 millionindebtedness (including amounts outstanding from time to time under the Company’s Equity Shelf Program.credit facilities, senior notes, Term Loan or future credit facilities), and to provide for working capital.
Bonus Depreciation
In 2017, with the enactment of U.S. tax reform, the bonus depreciation deduction percentage changed from 50% to 100% for “qualified property” placed in service after September 27, 2017 and before 2023. The bonus depreciation tax deduction phases out starting in 2023, by 20% for each of the five following years. Qualified property excludes most public utility property. The
40

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

Company estimates bonus depreciation will defer the payment of approximately $10approximately $20 million of federalfederal income taxes for 2020,2021, none of which relates to utilitynatural gas operations.
Dividend Policy
Dividends are payable on the Company’s common stock at the discretion of the Board of Directors (the “Board”). In setting the dividend rate, the Board currently targets a payout ratio of 55% to 65% of consolidated earnings per share and considers, among other factors, current and expected future earnings levels, our ongoing capital expenditure plans and expected external funding needs, in addition to our ability to maintain strong credit ratings and liquidity. The Company has paid dividends on its common stock since 1956 and has increased that dividend each year since 2007. In February 2020,2021, the Board elected to increase the quarterly dividend from $0.545$0.57 to $0.570$0.595 per share, representing a 4.6%4.4% increase, effective with the June 20202021 payment.
Liquidity
Liquidity refers to the ability of an enterprise to generate sufficient amounts of cash through its operating activities and external financing to meet its cash requirements. Several general factors (some of which are out of the control of the Company) that could significantly affect liquidity in the future years include: variability of natural gas prices, changes in the ratemaking policies of regulatory commissions, regulatory lag, customer growth in the natural gas segment’s service territories,segment, the ability to access and obtain capital from external sources, interest rates, changes in income tax laws, pension funding requirements, inflation, and the level of earnings. Natural gas prices and related gas cost recovery rates, as well as plant investment, have historically had the most significant impact on liquidity.
The Company remains focused on the safety and well-being of our employees and on the service to our customers. The Company continues to review and assess the ongoing impacts of the COVID-19 pandemic, including those on our customers, suppliers, and business. As of June 30, 2020, the Company’s Cash and cash equivalents were $200 million (which is intended to redeem Southwest’s $125 million 4.45% Notes on September 1, 2020), and the Company had access to $679 million of borrowing capacity under the Company’s various credit facilities, which management believes will help manage the impacts of the COVID-19 pandemic on its business and address related liquidity needs if they should arise.
49

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

On an interim basis, Southwest defers over- or under-collections of gas costs to PGA balancing accounts. In addition, Southwest uses this mechanism to either refund amounts over-collected or recoup amounts under-collected as compared to the price paid for natural gas during the period since the last PGA rate change went into effect. At June 30, 2020,March 31, 2021, the combined balance in the PGA accounts totaled an over-collectionunder-collection of $70$239 million. SeeSee PGA Filings for more information.
In March 2021, Southwest issued a $250 million Term Loan that will mature in March 2022, or 364 days after issuance. The proceeds were used to fund the increased cost of natural gas supply during the month of February 2021 caused by extreme weather conditions in the central U.S.
Southwest Gas Holdings, Inc. has a credit facility with a borrowing capacity of $100 million; onmillion that expires in April 10, 2020, the existing credit2025. This facility was amended to extend the maturity date to April 10, 2025, while maintaining the borrowing capacity at $100 million. The Company intends to utilize this facilityis intended for short-term financing needs. At June 30, 2020, $58March 31, 2021, $43 million was outstanding under this facility.
Southwest has a credit facility, with a borrowing capacity of $400 million; onmillion, which expires in April 10, 2020,2025. Southwest amended the credit facility agreement which extended the maturity date to April 10, 2025. The revolving borrowing capacity under the amended credit facility agreement remains at $400 million following that amendment. Southwest designateddesignates $150 million of the facility for long-term borrowing needs and the remaining $250 million for working capital purposes. The maximum amount outstanding on the long-term portion of thethe credit facility (including a commercial paper program, as noted below) during the first sixthree months of 20202021 was $150 million. As of June 30, 2020, nomillion, the same amount which was outstanding under the long-term portionas of the facility. Additionally, theMarch 31, 2021. The maximum amount outstanding on the short-term portion of the credit facility during the first six monthsquarter of 20202021 was $161$125 million. As of June 30, 2020, no amountMarch 31, 2021, $17 million was outstanding on the short-term portion of this credit facility. The credit facility can be used as necessary to meet liquidity requirements, including temporarily financing under-collected PGA balances, if any, or meeting the refund needs of over-collected balances. ItThe credit facility has been adequate for Southwest’s working capital needs outside of funds raised through operations and other types of external financing. As indicated, any additional cash requirements would include the existing credit facility, equity contributions from the Company, and/or other external financing sources.
Southwest has a $50 million commercial paper program. Any issuance under the commercial paper program is supported by Southwest’s current revolving credit facility and, therefore, does not represent additional borrowing capacity. Any borrowing under the commercial paper program during 20202021 will be designated as long-term debt. Interest rates for the commercial paper program are calculated at the current commercial paper rate during the borrowing term. At June 30, 2020,March 31, 2021, there were no borrowingswas $50 million outstanding under this program.
Centuri has a senior secured revolving credit and term loan facility with borrowing capacity of $590 million (refer to Note 5 – Debt). The line of credit portion of the facility iscomprises $325 million; associated amounts borrowed and repaid under the revolving credit facility are available to be re-borrowed. The term loan facility portion has a limit of approximately $265 million. The $590 million credit and term loan facility expires in November 30, 2023. It is secured by substantially all of Centuri’s assets except those explicitly excluded under the terms of the agreement (including owned real estate and certain certificated vehicles). Centuri assets securing the facility at June 30, 2020 totaledMarch 31, 2021 totaled $1.3 billion. TheThe maximum amount outstanding on the combined facility during the first sixthree months of 20202021 was $312$249 million of, at which $235point $223 million was outstanding on the term portion. As of June 30, 2020, $77March 31, 2021, $26 million was outstanding on the revolving credit facility, and $231in addition to the $223 million wasthat remained outstanding on the term loan portion of the facility. Also at June 30, 2020,March 31, 2021, there was approximately $237$267 million, net ofof letters of credit, available for borrowing under the line of credit.
On April 10, 2020, the holding company and Southwest amended their respective credit facility agreements (see above). Interest rates for the amended credit facilities are calculated at either LIBOR or an “alternate base rate,” plus in each case an applicable margin that is determined based on each entities’ respective senior unsecured long-term debt rating. Upon the occurrence of certain events providing for a transition away from LIBOR, or if LIBOR is no longer a widely recognized benchmark rate, each entity may amend their respective credit facility with a replacement rate as set forth in the amended credit facility agreement. It is currently anticipated that LIBOR may be discontinued as a benchmark or reference rate after 2021. As of June 30, 2020, $58 million borrowings were outstanding for the holding company under its credit facility (see Note 5 – Debt), and $188 million of Centuri’s indebtedness under its facility have interest rates with reference to LIBOR and maturity dates that extend beyond 2021. Southwest had no borrowings outstanding under its amended credit facility as of June 30, 2020. The above amounts that were outstanding for the holding company and for Centuri reflect approximately 9% of total debt (including current maturities) for the Company overall. In order to mitigate the impact of the discontinuation on the Company’s financial condition and results of operations, management will continue to monitor developments with respect to alternative rates and work with lenders to determine the appropriate alternative reference rate for variable rate indebtedness. However, at this time the Company and Southwest can provide no assurances as to the impact a LIBOR discontinuation will have on their financial condition or results of operations. Any alternative rate may be less predictable or less attractive than LIBOR.

5041

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

Interest rates for the credit facilities of the holding company, Southwest, and Centuri, and for Southwest’s Term Loan contain LIBOR-based rates. Upon the occurrence of certain events providing for a transition away from LIBOR, or if LIBOR is no longer a widely recognized benchmark rate, the holding company and Southwest may amend their respective credit facility as set forth in the credit facility agreement, and also in the case of Southwest’s Term Loan, to accommodate a replacement benchmark as set forth in the agreements. LIBOR is scheduled to be discontinued as a benchmark or reference rate after 2021. In order to mitigate the impact of a discontinuance on the Company’s and Southwest’s financial condition and results of operations, management will monitor developments and work with lenders, where relevant, to determine the appropriate replacement/alternative reference rate for variable rate debt. At this time the Company and Southwest can provide no assurances as to the impact a LIBOR discontinuance will have on their financial condition or results of operations. Any alternative rate may be less predictable or less attractive than LIBOR.
The Company has a Sales Agency Agreement with BNY Mellon Capital Markets, LLC and J.P. Morgan Securities LLC for the offer and sale of up to $500 million of common stock from time to time in at-the-market offerings, which is an additional source of liquidity.
Forward-Looking Statements
This quarterly report contains statements which constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 (“Reform Act”). All statements other than statements of historical fact included or incorporated by reference in this quarterly report are forward-looking statements, including, without limitation, statements regarding the Company’s plans, objectives, goals, intentions, projections, strategies, future events or performance, negotiations, and underlying assumptions. The words “may,” “if,” “will,” “should,” “could,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “project,” “continue,” “forecast,” “intend,” “endeavor,” “promote,” “seek,” and similar words and expressions are generally used and intended to identify forward-looking statements. For example, statements regarding operating margin patterns, customer growth, the composition of our customer base, price volatility, seasonal patterns, payment of debt, the Company’s COLI strategy, replacement market and new construction market, impacts from the novel Coronavirus (COVID-19),COVID-19 pandemic, including on our employees, customers, supply chain, transportation network,or otherwise, our financial position, revenue, earnings, cash flows, debt covenants, operations, regulatory recovery, work deployment or resumption and related uncertainties stemming from this pandemic, expected impacts of valuation adjustments associated with theany redeemable noncontrolling interest, in Linetec, the impacts of U.S. tax reform including disposition in any regulatory proceedingsproceeding and bonus depreciation tax deductions, the impact of recent PHMSA rulemaking, the amounts and timing for completion of estimated future construction expenditures, plans to pursue infrastructure programs or programs under SB151 legislation, forecasted operating cash flows and results of operations, net earnings impacts or recovery of costs from gas infrastructure replacement and COYL programs and surcharges, funding sources of cash requirements, amounts generally expected to be reflected in 2020 or future period revenues from regulatory rate proceedings including amounts requested or preliminarily settled from the recently filedrecent and ongoing general rate cases or other regulatory proceedings, the outcome of judicial review of the previous Nevada rate case, rates and surcharges, PGA administration and recovery, and other rate adjustments, sufficiency of working capital and current credit facilities, bank lending practices, the Company’s views regarding its liquidity position, ability to raise funds and receive external financing capacity and the intent and ability to issue various financing instruments and stock under the Equity Shelf Programexisting at-the-market equity program or otherwise, future dividend increases and the Board’s current target dividend payout ratio, pension and postretirement benefits, certain impacts of tax acts, the effect of any other rate changes or regulatory proceedings, contract or construction change order negotiations, impacts of accounting standard updates, infrastructure replacement mechanisms and COYL programs, statements regarding future gas prices, gas purchase contracts and derivative financial instruments,pipeline imbalance charges or claims related thereto, recoverability of regulatory assets, the impact of certain legal proceedings, and the timing and results of future rate hearings, including theany ongoing or future general rate cases and other proceedings, the final resolution for recovery of the CDMI in all jurisdictions, and statements regarding pending approvals are forward-looking statements. All forward-looking statements are intended to be subject to the safe harbor protection provided by the Reform Act.
A number of important factors affecting the business and financial results of the Company could cause actual results to differ materially from those stated in the forward-looking statements. These factors include, but are not limited to, customer growth rates, conditions in the housing market, the impacts of COVID-19 including that which may result from a continued or sustained restriction on commerce by government officials or otherwise, including impacts on employment in our territories, the health impacts to our customers and employees due to the persistence of the virus or efficacy of vaccines, the ability to collect on customer accounts due to the current or an extended moratorium on late fees or service disconnection, the ability to obtain regulatory recovery of all costs and financial impacts resulting from this pandemic, the ability of the infrastructure services business to resume work with all customers and the impact of a delay or termination of work as a result thereof, the impacts of future restrictions placed on our business by government regulation or otherwise (such as self-imposed restrictions for the safety of employees and customers), including related to personal distancing, investment in personal protective equipment and other protocols, the impact of a resurgence of the virus following the ongoing resumption of commerce in our territories, and decisions of Centuri customers as to whether to pursue capital projects due to economic impacts resulting from the pandemic or
42

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

otherwise, the ability to recover and timing thereof related to costs throughassociated with the PGA mechanisms or other regulatory assets, the effects of regulation/deregulation, governmental or regulatory policy regarding pipeline safety, greenhouse gas emissions, natural gas or alternative energy, the regulatory support for ongoing infrastructure programs or expansions, the timing and amount of rate relief, the timing and methods determined by regulators to refund amounts to customers resulting from U.S. tax reform, changes in rate design, variability in volume of gas or transportation service sold to customers, changes in gas procurement practices, changes in capital requirements and funding, the impact of credit rating actions and conditions in the capital markets on financing costs, the impact of variable rate indebtedness associated with a discontinuance of LIBOR including in relation to amounts of indebtedness then outstanding, changes in construction expenditures and financing, changes in operations and maintenance expenses, effects of pension expense forecasts, accounting changes and regulatory treatment related thereto, currently unresolved and future liability claims and disputes, changes in pipeline capacity for the transportation of gas and related costs, results of Centuri bid work, the impact of weather on Centuri’s operations, future acquisition-related costs, impacts of changes in value of theany redeemable noncontrolling interest if at other than fair value, Centuri utility infrastructure expenses, differences between actual and originally expected outcomes of Centuri bid or other fixed-price construction agreements, outcomes from contract and change order negotiations, ability to successfully procure new work, impacts from work awarded or failing to be awarded from significant customers, the mix of work awarded, the amount of work awarded to Centuri following the lifting of work stoppages or reduction, the result of
51

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

productivity inefficiencies from regulatory requirements or otherwise, delays in commissioning individual projects, acquisitions, and management’s plans related thereto, competition, our ability to raise capital in external financings, our ability to continue to remain within the ratios and other limits subject to our debt covenants, and ongoing evaluations in regard to goodwill and other intangible assets. In addition, the Company can provide no assurance that its discussions regarding certain trends relating to its financing and operating expenses will continue or cease to continue in future periods. For additional information on the risks associated with the Company’s business, see Item 1A. Risk Factors and Item 7A. Quantitative and Qualitative Disclosures About Market Risk in the Annual Report on Form 10-K for the year ended December 31, 2019, and Item 1A. Risk Factors, as updated in association with the Quarterly Report on Form 10-Q for the quarter ended March 31, 2020.
All forward-looking statements in this quarterly report are made as of the date hereof, based on information available to the Company and Southwest as of the date hereof, and the Company assumesand Southwest assume no obligation to update or revise any of its forward-looking statements, even if experience or future changes show that the indicated results or events will not be realized. We caution you not to unduly rely on any forward-looking statement(s).
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
See Item 7A. Quantitative and Qualitative Disclosures about Market Risk in the 20192020 Annual Report on Form 10-K filed with the SEC. No material changes have occurred related to the disclosures about market risk.
ITEM 4. CONTROLS AND PROCEDURES
Management of Southwest Gas Holdings, Inc. and Southwest Gas Corporation has established disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) that are designed to provide reasonable assurance that information required to be disclosed in their respective reports filed or submitted under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms and to provide reasonable assurance that such information is accumulated and communicated to management of each company, including each respective Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosures. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and benefits of controls must be considered relative to their costs. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or management override of the control. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and may not be detected.
Based on the most recent evaluation, as of June 30, 2020,March 31, 2021, management of Southwest Gas Holdings, Inc., including the Chief Executive Officer and Chief Financial Officer, believes the Company’s disclosure controls and procedures are effective at attaining the level of reasonable assurance noted above.
There have been no changes in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act) during the secondfirst quarter of 20202021 that have materially affected, or are likely to materially affect, the Company’s internal control over financial reporting.
Based on the most recent evaluation, as of June 30, 2020,March 31, 2021, management of Southwest Gas Corporation, including the Chief Executive Officer and Chief Financial Officer, believes Southwest’s disclosure controls and procedures are effective at attaining the level of reasonable assurance noted above.
43

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

There have been no changes in Southwest’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act) during the secondfirst quarter of 20202021 that have materially affected, or are likely to materially affect Southwest’s internal control over financial reporting.
In May 2021, the Company implemented a new customer service system, which involved replacing the legacy functionality for customer invoicing, customer service administration, and ancillary activities. The customer service system is being deployed for transactions starting in May 2021, and was not utilized in preparing the first quarter 2021 financial information. Management monitored developments related to the customer service system replacement, including working with the project team to ensure control impacts were identified and documented, in order to assist management in evaluating impacts to internal control. System integration and user acceptance testing were conducted to aid management in its evaluations. Post-implementation reviews of the system and impacted business processes are being conducted to enable management to evaluate the design and effectiveness of internal controls.
PART II - OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS
The Company is named as a defendant in various legal proceedings. The ultimate dispositions of these proceedings are not presently determinable; however, it is the opinion of management that none of this litigation individually or in the aggregate will have a material adverse impact on the Company’s financial position or results of operations.
ITEMS 1A through 3. None.
ITEM 4. MINE SAFETY DISCLOSURES Not applicable.
ITEM 5. OTHER INFORMATION None.
52

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONJune 30, 2020

ITEM 6. EXHIBITS
The following documents are filed, or furnished, as applicable, as part of this report on Form 10-Q:
Exhibit 4.0110.01-
Exhibit 4.02-
Exhibit 4.03-
Exhibit 10.01-
Exhibit 10.02-
Exhibit 31.01-
Exhibit 31.02-
Exhibit 32.01-
Exhibit 32.02-
Exhibit 101.INS-XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
Exhibit 101SCH-XBRL Schema Document
Exhibit 101.CAL-XBRL Calculation Linkbase Document
Exhibit 101.DEF-XBRL Definition Linkbase Document
Exhibit 101.LAB-XBRL Label Linkbase Document
Exhibit 101.PRE-XBRL Presentation Linkbase Document
Exhibit 104-Cover Page Interactive Data File (embedded within the Inline XBRL document).

5344

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  June 30, 2020March 31, 2021

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
Southwest Gas Holdings, Inc.
(Registrant)
Date: AugustDated: May 6, 20202021
/s/ LORI L. COLVIN
Lori L. Colvin
Vice President/Controller and Chief Accounting Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
Southwest Gas Corporation
(Registrant)
Date: AugustDated: May 6, 20202021
/s/ LORI L. COLVIN
Lori L. Colvin
Vice President/Controller and Chief Accounting Officer

5445