The accompanying notes are an integral part of these consolidated financial statements.

MYR GROUP INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

1. Organization, Business and Basis of Presentation

Organization and Business

MYR Group Inc. (the “Company”) is a holding company of specialty electrical construction service providers and is currently conductingconducts operations through wholly-ownedits wholly owned subsidiaries, including: The L. E. Myers Co., a Delaware corporation; Harlan Electric Company, a Michigan corporation; Great Southwestern Construction, Inc., a Colorado corporation; Sturgeon Electric Company, Inc., a Michigan corporation; MYR Transmission Services, Inc., a Delaware corporation; E.S. Boulos Company, a Delaware corporation; High Country Line Construction, Inc., a Nevada corporation; Sturgeon Electric California, LLC, a Delaware limited liability company; GSW Integrated Services, LLC, a Delaware limited liability company; MYR Transmission Services Canada, Ltd., a British Columbia corporation; Northern Transmission Services, Ltd., a British Columbia corporation;corporation and Western Pacific Enterprises Ltd., a British Columbia corporation.

The Company performs construction services in two business segments: Transmission and Distribution (“T&D”), and Commercial and Industrial (“C&I”). T&D customers include investor-owned utilities, cooperatives, private developers, government-funded utilities, independent power producers, independent transmission companies, industrial facility owners and other contractors. T&D provides a broad range of services, which include design, engineering, procurement, construction, upgrade, maintenance and repair services, with a particular focus on construction, maintenance and repair. C&I customers include general contractors, commercial and industrial facility owners, local governments and developers in the western and northeastern United States and western Canada. The Company also provides C&I segment electrical contracting services to general contractors, commercial and industrial facility owners, local governments and developers in the western and northeastern United States and western Canada.

Basis of Presentation

Interim Consolidated Financial Information

The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial reporting and pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures, normally included in annual financial statements prepared in accordance with U.S. GAAP, have been condensed or omitted pursuant to the rules and regulations of the SEC. The Company believes that the disclosures made are adequate to make the information presented not misleading. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, necessary to fairly state the financial position, results of operations, comprehensive income and cash flows with respect to the interim consolidated financial statements, have been included. Certain reclassifications were made to prior year amounts to conform to the current year presentation. The consolidated balance sheet as of December 31, 20162017 has been derived from the audited financial statements as of that date. The results of operations and comprehensive income are not necessarily indicative of the results for the full year or the results for any future periods. These financial statements should be read in conjunction with the audited financial statements and related notes for the year ended December 31, 2016,2017, included in the Company’s annual reportAnnual Report on Form 10-K, which was filed with the SEC on March 9, 2017.7, 2018.

Foreign Currency

The functional currency for the Company’s Canadian operations is the Canadian dollar. Assets and liabilities denominated in Canadian dollars are translated into U.S. dollars at the end-of-period exchange rate. Revenues and expenses are translated using average exchange rates for the periods reported. Equity accounts are translated at historical rates. Cumulative translation adjustments are included as a separate component of accumulated other comprehensive income in shareholders’ equity. Foreign currency transaction gains and losses, arising primarily from changes in exchange rates on short termshort-term monetary assets and liabilities, and ineffective long-term monetary assets and liabilities are recorded in the “other income, net” line on the consolidated statements of operations. For the three months ended March 31, 2017, the Company recorded an insignificant amount of foreignForeign currency gains compared to foreign currency gains of $0.2 millionlosses were not significant for the three months ended March 31, 2016. Foreign2018 and 2017. Effective foreign currency transaction gains and losses, arising primarily from long termlong-term monetary assets and liabilities, are recorded in the foreign currency translation adjustment line on the consolidated statements of comprehensive income.

Accounts Receivable

The Company does not charge interest to its customers and carries its customer receivables at their face amounts, less an allowance for doubtful accounts. Included in accounts receivable are balances billed to customers pursuant to retainage provisions in certain contracts that are due upon completion of the contract and acceptance by the customer, or earlier as provided by the contract. Based on the Company’s experience in recent years, the majority of customer balances at each balance sheet date are collected within twelve months. As is common practice in the industry, the Company classifies all accounts receivable, including retainage, as current assets. The contracting cycle for certain long-term contracts may extend beyond one year, and accordingly, collection of retainage on those contracts may extend beyond one year. The Company expects a majority of the retainage recorded at March 31, 2018 to be collected within one year.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, andthe disclosure of contingent assets and liabilities at the date of the financial statements and revenues and expenses during the period reported. Actual results could differ from those estimates.

The most significant estimates are related to estimates of costs to complete on contracts, pending change orders and claims, shared savings, insurance reserves, income tax reserves, estimates surrounding stock-based compensation, the recoverability of goodwill and intangibles and accounts receivable reserves. Actual results could differ from these estimates.

In the three months ended March 31, 2018, the Company recognized revenues of $16.1 million related to significant change orders and/or claims that had been included as contract price adjustments on certain contracts which are in the process of being negotiated in the normal course of business.

The percentage of completion method of accounting requires the Company to make estimates about the expected revenue and gross profit on each of its contracts in process. TheDuring the three months ended March 31, 2018, changes in estimates are reviewedpertaining to certain projects decreased consolidated gross margin by 0.1%, which resulted in decreases in operating income of $0.3 million, net income of $0.2 million and revised quarterly, as needed.diluted earnings per common share of $0.01. During the three months ended March 31, 2017, changes in estimates pertaining to certain projects resulted in increased consolidated gross margin ofby 0.4%. The Company’s income from operations for the three months ended March 31, 2017 increased $1.1 million due to the changes in estimated gross profit. These changes in estimates, which resulted in increases in operating income of $1.1 million, net income of $0.6 million in net income or $0.04 inand diluted earnings per common share during the three months ended March 31, 2017. During the three months ended March 31, 2016, changes in estimates pertaining to certain projects resulted in decreased consolidated gross margin of 0.6%. The Company’s income from operations for the three months ended March 31, 2016 decreased $1.5 million due to the changes in estimated gross profit. These changes in estimates resulted in decreases of $0.9 million in net income or $0.05 in diluted earnings per common share during the three months ended March 31, 2016.$0.04.

Recent Accounting Pronouncements

Changes to U.S. GAAP are typically established by the Financial Accounting Standards Board (“FASB”) in the form of accounting standards updates (“ASUs”) to the FASB’s Accounting Standards Codification (“ASC”). The Company considers the applicability and impact of all ASUs. The Company, based on its assessment, determined that any recently issued or proposed ASUs not listed below are either not applicable to the Company or adoption will have minimal impact on our consolidated financial statements.statements

Recently Adopted Accounting Pronouncements

In March 2016, the FASB issued ASU No. 2016-09,Compensation—Stock Compensation (Topic 718). The amendments under this pronouncement make modifications to the accounting treatment for forfeitures, required withholding on stock compensation and the financial statement presentation of excess tax benefits or deficiencies and certain components of stock compensation. The standard is effective for interim and annual reporting periods beginning after December 15, 2016, with early adoption permitted. The Company adopted this ASU, on a prospective basis, on January 1, 2017. For the three months ended March 31, 2017, $0.8 million in excess tax benefits were reflected as income tax benefit in the Consolidated Statement of Operations and Comprehensive Income. Prior to adoption of the ASU, this amount would have been recorded to additional paid-in capital. The Company typically experiences the largest volume of restricted stock vesting in the first quarter of its fiscal year. The extent of excess tax benefits/deficiencies is subject to variation in MYR Group stock price and the timing/extent of restricted stock, performance share and phantom stock vesting and stock option exercises. In addition, the Company has elected to discontinue estimating forfeitures and will account for forfeitures as they occur. The net cumulative effect of this change was recognized as a $0.2 million reduction to retained earnings as of January 1, 2017 with a corresponding increase in additional paid in capital.

Recently Issued Accounting Pronouncements

In January 2017, the FASB issued ASU No. 2017-04,Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, which simplifies the subsequent measurement of goodwill, through elimination of Step 2 from the goodwill impairment test. Instead an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. The update is effective for any annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The guidance requires application on a prospective basis. The Company does not expect that this pronouncement will have a significant impact on its financial statements.

In January 2017, the FASB issued ASU No. 2017-01,Business Combinations (Topic 805): Clarifying the Definition of a Business, which clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The update is effective for annual reporting periods beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted for financial statements that have not been previously issued. The guidance requires application on a prospective basis. The Company does not expect that this pronouncement will have a significant impact on its financial statements.

In October 2016, the FASB issued ASU No. 2016-16,Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory, which modifies existing guidance and is intended to reduce the diversity in practice with respect to the accounting for income tax consequences of intra-entity transfers of assets. This update requires entities to immediately recognize the tax consequences on intercompany asset transfers (excluding inventory) at the transaction date, and eliminates the recognition exception within current guidance. The update is effective for annual reporting periods beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted. The guidance requires application using a modified retrospective approach. The Company is evaluating the impact this pronouncement will have on its financial statements.

In August 2016, the FASB issued ASU No. 2016-15,Statement of Cash Flows (Topic 230):Classification of Certain Cash Receipts and Cash Payments, which is intended to reduce diversity in practice in how eight specific transactions are classified in the statement of cash flows. The update is effective for annual reporting periods beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, provided that all of the amendments are adopted in the same period. The guidance requires application using a retrospective approach. The Company is evaluating the impact this update will have on its financial statements.

In February 2016, the FASB issued ASU No. 2016-02,Leases (Topic 842). The amendments under this pronouncement will change the way all leases with durations in excess of one year or more are treated. Under this guidance, lessees will be required to recognize virtually all leases on the balance sheet as a right-of-use asset and an associated financing lease liability or capital lease liability. The right-of-use asset represents the lessee’s right to use, or control the use of, a specified asset for the specified lease term. The lease liability represents the lessee’s obligation to make lease payments arising from the lease, measured on a discounted basis. Based on certain characteristics, leases are classified as financing leases or operating leases. Financing lease liabilities, which contain provisions similar to capitalized leases, are amortized like capital leases under current accounting, as amortization expense and interest expense in the statement of operations. Operating lease liabilities are amortized on a straight-line basis over the life of the lease as lease expense in the statement of operations. This update is effective for annual reporting periods, and interim periods within those reporting periods, beginning after December 15, 2018. While the Company continues to evaluate the impact this pronouncement will have on its policies and procedures pertaining to its existing and future lease arrangements, disclosure requirements and on the Company’s financial statements, the Company expects most existing operating lease commitments, that extend beyond twelve months at the time of adoption, will be recognized as lease liabilities and right-of-use assets upon adoption.

In May 2014, the FASB issued ASU No. 2014-09,Revenue from Contracts with Customers (Topic 606). The amendments under this pronouncement will changechanged how an entity recognizes revenue from contracts it enters to transfer goods, services or nonfinancial assets to its customers. These changes created a comprehensive framework for all entities in all industries to apply in the determination of when to recognize revenue, and, therefore, supersede virtually all existing revenue recognition requirements and guidance. This framework is expected to result in less complex guidance in application while providing a consistent and comparable methodology for revenue recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: Step 1: Identify the contract(s) with the customer; Step 2: Identify the performance obligations in the contract; Step 3: Determine the transaction price; Step 4: Allocate the transaction price to the performance obligations in the contract; Step 5: Recognize revenue when, or as, the entity satisfies the performance obligations. In addition, the amendments require expanded disclosure to enable the users of the financial statements to understand the nature, timing and uncertainty of revenue and cash flow arising from contracts with customers. On August 16, 2015,January 1, 2018, the FASB deferredCompany adopted this ASU on a modified retrospective basis. The adoption of this ASU resulted in the effective date by one yearrecognition of the cumulative effect of applying the new revenue standard as an adjustment of $0.7 million, net of tax, to December 15, 2017the opening balance of retained earnings at the beginning of 2018, representing revenues which would have been recognized in prior periods under Topic 606. Results for annual reporting periods beginning after that date, permitting earlyJanuary 1, 2018 are presented underRevenue from Contracts with Customers (Topic 606), while prior period amounts are not adjusted and continue to be reported in accordance with the Company’s historical accounting underRevenue Recognition Topic 605. See Note 2–Revenue Recognition to the Financial Statements for further information related to the Company’s accounting policy and transition disclosures associated with the adoption of this pronouncement.

In January 2017, the standard, but not beforeFASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the originalDefinition of a Business, which clarified the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The Company adopted this ASU on a prospective basis in January 2018 and there was no effect on the Company’s financial position, results of operations or cash flows.

In October 2016, the FASB issued ASU No. 2016-16,Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory, which modified existing guidance and intended to reduce the diversity in practice with respect to the accounting for income tax consequences of intra-entity transfers of assets. This update requires entities to immediately recognize the tax consequences on intercompany asset transfers (excluding inventory) at the transaction date, and eliminated the recognition exception within previous guidance. The Company adopted this ASU using a modified retrospective approach in January 2018 and there was no effect on the Company’s financial position, results of operations or cash flows.

In August 2016, the FASB issued ASU No. 2016-15,Statement of Cash Flows (Topic 230):Classification of Certain Cash Receipts and Cash Payments, which intended to reduce diversity in practice in how eight specific transactions are classified in the statement of cash flows. The Company adopted this ASU on a retrospective basis in January 2018 and there was no effect on the Company’s financial position, results of operations or cash flows.

Recently Issued Accounting Pronouncements

In January 2017, the FASB issued ASU No. 2017-04,Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, which simplifies the subsequent measurement of goodwill, through the elimination of Step 2 from the goodwill impairment test. Instead, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. The update is effective date offor any annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2016.2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The guidance requires application on a prospective basis. The Company plans to adopt the amendments underdoes not expect that this pronouncement usingwill have a significant impact on its financial statements.

In February 2016, the modified retrospective transition approach on January 1, 2018. Under the modified retrospective transition approach, the Company will recognize any changes from the beginning of the year of initial application through retained earnings with no restatement of comparative periods. As theFASB issued ASU No. 2016-02,Leases (Topic 842). The amendments under this pronouncement will supersede substantiallychange the way all existing revenueleases with durations in excess of one year are treated. Under this guidance, affecting us under U.S. GAAP, itlessees will impact revenuebe required to recognize virtually all leases on the balance sheet as a right-of-use asset and cost recognitionan associated financing lease liability or capital lease liability. The right-of-use asset represents the lessee’s right to use, or control the use of, a specified asset for the specified lease term. The lease liability represents the lessee’s obligation to make lease payments arising from the lease, measured on a discounted basis. Based on certain contracts across both our T&Dcharacteristics, leases are classified as financing leases or operating leases. Financing lease liabilities, which contain provisions similar to capitalized leases, are amortized like capital leases under current accounting, as amortization expense and C&I business segments,interest expense in addition to impacting our business processes and our information technology systems. Asthe statement of operations. Operating lease liabilities are amortized on a result,straight-line basis over the Company’s evaluationlife of the lease as lease expense in the statement of operations. This update is effective for annual reporting periods, and interim periods within those reporting periods, beginning after December 15, 2018. The Company continues to evaluate the impact ofthat this pronouncement, and its expanded disclosure requirements, and all amendments relating to this pronouncement, will have on the Company’sits policies and procedures pertaining to recognition of revenue from contracts with customers,its existing and the impactfuture lease arrangements, disclosure requirements and on the Company’s financial statementsstatements. The Company expects that most existing operating lease commitments that extend beyond twelve months at the time of adoption will be recognized as lease liabilities and right-of-use assets upon adoption.

2. Revenue Recognition

Adoption and Accounting Policy

On January 1, 2018, the Company adopted ASU No. 2014-09,Revenue from Contracts with Customers (Topic 606) using the modified retrospective method for contracts that were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under this new pronouncement, while prior period amounts are not adjusted and continue to be reported under the accounting standardRevenue Recognition Topic 605,which was in effect for prior periods. The Company recorded an increase to opening retained earnings of $0.7 million, net of tax, as of January 1, 2018 due to the cumulative impact of adopting Topic 606, representing revenues which would have been recognized in prior periods under Topic 606. The impact to revenue for the three months ended March 31, 2018 was an increase of $0.1 million as a result of adopting Topic 606. The cumulative adjustment and the impact experienced during the three months ended March 31, 2018 were due to accelerated recognition of contract provisions related to variable consideration previously not permitted to be recognized under Topic 605 until no remaining contingency existed related to this consideration.

Under Topic 606, the Company recognizes revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration the Company expects to be entitled to in exchange for goods or services provided. Revenue associated with contracts with customers is ongoing.recognized over time as the Company’s performance creates or enhances customer controlled assets or creates or enhances an asset with no alternative use, which the Company has an enforceable right to receive compensation as defined under the contract for performance completed. To determine the amount of revenue to recognize over time, the Company estimates profit by determining the difference between total estimated revenue and total estimated cost of a contract. The profit and corresponding revenue is recognized over the contract term based on costs incurred under the cost-to-cost method. For purposes of recognizing revenue, the Company follows the five step approach outlined in ASC 606-10-25.

2. Acquisitions

Western Pacific Enterprises Ltd.As the cost-to-cost method is driven by incurred cost, the Company calculates the percentage of completion by dividing costs incurred-to-date by the total estimated cost. The percentage of completion is then multiplied by estimated revenues to determine inception-to-date revenue. Revenue recognized for the period is the current inception-to-date recognized revenue less the prior period inception-to-date recognized revenue. If a contract is projected to result in a loss, the entire contract loss is recognized in the period when the loss was first determined and the amount of the loss is updated in subsequent reporting periods. Revenue recognition also includes an amount related to a contract asset or contract liability. If the recognized revenue is greater than the amount billed to the customer, a contract asset is recorded in costs and estimated earnings in excess of billings on uncompleted contracts. Conversely, if the amount billed to the customer is greater than the recognized revenue, a contract liability is recorded in billings in excess of costs and estimated earnings on uncompleted contracts. Contract costs incurred-to-date and expected total contract costs are continuously monitored during the term of the contract. Changes in the job performance, job conditions and final contract settlements are factors that influence management’s assessment of total contract value and the total estimated costs to complete those contracts, and therefore, profit and revenue recognition.

On October 28, 2016,Some of the Company’s contracts may have contract terms that include variable consideration such as safety or performance bonuses or liquidated damages. In accordance with ASC 606-10-32, the Company completedestimates the acquisitionvariable consideration using one of substantially alltwo methods. In contracts in which there is a binary outcome, the most likely amount method is used. In instances in which there is a range of possible outcomes, the expected value method is used. In accordance with ASC 606-10-32-11, the Company includes the estimated amount of variable consideration in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative recognized revenue will not result when the final outcome of the assetsvariable consideration is determined. In contracts in which a significant reversal may occur, the Company uses constraint in recognizing revenue on variable consideration. Although the Company often enters into contracts that contain liquidated damage clauses, the Company rarely incurs them, and as such, the Company does not include amounts associated with liquidated damage clauses until it is probable that liquidated damages will occur. These items are continually monitored by multiple levels of Western Pacific Enterprises GP andmanagement throughout the reporting period.

A portion of Western Pacific Enterprises Ltd., except for certain real estate owned by Western Pacific Enterprises Ltd., with the company continuing operations underwork the name Western Pacific Enterprises Ltd. (“WPE”), an electrical contracting firm in western Canada. With its main headquarters in Coquitlam, British Columbia, WPE provides a wide range of commercial and industrial electrical construction capabilities under the Company’s C&I segment. WPE also provides substation construction capabilities under the Company’s T&D segment. The total consideration paid was approximately $12.1 million, which was funded through borrowings from our line of credit. Total consideration paid included $2.2 million subject to potential net asset adjustments once finalized by the end of 2017 as stipulatedCompany performs requires financial assurances in the purchase agreement. These net asset adjustments were approximately $0.8 million asform of the October 28, 2016 closing dateperformance and aspayment bonds or letters of March 31, 2017. The Company accounted for the net asset adjustments as a reduction to consideration paid and will be funded through our escrow, establishedcredit at the time of purchase.execution of the contract. Most contracts include retention provisions of up to 10%, which are generally withheld from each progress payment as retainage until the contract work has been completed and approved.

Disaggregation of Revenue

A majority of the Company’s revenues are earned through contracts with customers that normally provide for payment upon completion of specified work or units of work as identified in the contract. Although there is considerable variation in the terms of these contracts they are primarily structured as fixed-price contracts, under which the Company agrees to do the entire project for a fixed amount, or unit-price contracts, under which the Company agrees to do the work at a fixed price per unit of work as specified in the contract. The purchase agreementCompany also includes contingent consideration provisionsenters into time-and-equipment and time-and-materials contracts under which the Company is paid for labor and equipment at negotiated hourly billing rates and for other expenses, including materials, as incurred. Finally, the Company sometimes enters into cost-plus contracts, where the Company is paid for costs plus a negotiated margin. On occasion, time-and-equipment, time-and-materials and cost plus contracts require the Company to include a guaranteed not-to-exceed maximum price.

Historically, fixed-price and unit-price contracts have had the highest potential margins; however, they have had a greater risk in terms of profitability because cost overruns may not be recoverable. Time-and-equipment, time-and-materials and cost-plus contracts have historically had less margin guarantee adjustments based upon performance subsequentupside, but generally have had a lower risk of cost overruns. The Company also provides services under master service agreements (“MSAs”) and other variable-term service agreements. MSAs normally cover maintenance, upgrade and extension services, as well as new construction. Work performed under MSAs is typically billed on a unit-price, time-and-materials or time-and-equipment basis. MSAs are typically one to three years in duration; however, most of the Company’s contracts, including MSAs, may be terminated by the customer on short notice, typically 30 to 90 days, even if the Company is not in default under the contract. Under MSAs, customers generally agree to use the Company for certain services in a specified geographic region. Most MSAs include no obligation for the contract counterparty to assign specific volumes of work to the acquisition onCompany and do not required the counterparty to use the Company exclusively, although in some cases the MSA contract gives the Company a right of first refusal for certain contracts. Contingent consideration of approximately $0.9 millionwork. Additional information related to the margin guarantee adjustments on certain contracts was recordedCompany’s market types is provided in other incomeNote 10–Segment Information to the Financial Statements.

The components of the Company’s revenue by contract type for the three months ended March 31, 2017. Future margin guarantee adjustments, if any, are expected to be completed by the end of 2017. There could also be contingent compensation payments based on the successful achievement of certain performance targets and continued employment of certain key executives of WPE. These payments are recognized2018 were as compensation expense in the consolidated statement of operations as incurred. The Company has recognized approximately $0.2 million of compensation expense associated with these contingent payments since the acquisition.follows:

The components of the Company’s revenue by market type for the three months ended March 31, 2018 were as follows:

Contract Assets and Liabilities

Contracts with customers usually stipulate the timing of payment, which is defined by the terms found within the various contracts under which work was performed during the period. Therefore, contract assets and liabilities are created when the timing of costs incurred on work performed does not coincide with the billing terms, which frequently include retention provisions contained in each contract. The following table provides information about receivables, contract assets and contract liabilities from contracts with customers:

The difference between the opening and closing balances of the Company’s contract assets and contract liabilities primarily results from the timing of operations for WPE arethe Company’s performance and customer payment. The amounts of revenue recognized in the period that was included in the Company’s consolidated statement of operations and the C&I segment from the date of acquisition. Costs of approximately $0.4opening contract liability balances was $25.4 million related to the acquisition were included in selling, general and administrative expenses in the consolidated statement of operations for the yearthree months ended DecemberMarch 31, 2016.2018. This revenue consists primarily of work performed on previous billings to customers.

Remaining Performance Obligations

On March 31, 2018, the Company had $881.8 million of remaining performance obligations. The Company’s remaining performance obligations includes projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions. The following table summarizes that amount of remaining performance obligations that the allocationCompany expects to be realized as of March 31, 2018 and the amount of the opening balance sheet fromremaining performance obligations that the date of acquisition through March 31, 2017:

Company reasonably estimates will not be recognized within the next twelve months. The Company has developed preliminary estimates of fair valueexpects a vast majority of the assets acquiredremaining performance obligations to be recognized within twenty-four months, although the timing of the Company’s performance is not always under its control. Additionally, the difference between the remaining performance obligations and liabilities assumed for the purposes of allocating the purchase price. Further adjustments are expectedbacklog is due to the allocation as third party valuationsexclusion of identifiable intangible assets, including backlog, customer relationships, trade name and off-market component, are determined, and as net asset adjustments are finalized. Aa portion of the unallocated intangible assets are expectedCompany’s MSAs under certain contract types from the Company’s remaining performance obligations as these contracts can be canceled for convenience at any time by the Company or the customer without considerable cost incurred by the customer. Additional information related to be tax deductible per applicable Canadian Revenue Authority regulations. The Company expects to complete the purchase accountingbacklog is provided in the second half“Item 2. Management’s Discussion and Analysis of 2017.Financial Condition and Results of Operations”.

3. Fair Value Measurements

The Company uses the three-tier hierarchy of fair value measurement, which prioritizes the inputs used in measuring fair value based upon their degree of availability in external active markets. These tiers include: Level 1 (the highest priority), defined as observable inputs, such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3 (the lowest priority), defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

As of March 31, 20172018 and December 31, 2016,2017, the Company determined that the carrying value of cash and cash equivalents approximated fair value based on Level 1 inputs. As of March 31, 20172018 and December 31, 2016,2017, the fair valuevalues of the Company’s long-term debt and capital lease obligations were based on Level 2 inputs. The Company’s long-term debt was based on variable and fixed interest rates at March 31, 20172018 and December 31, 2016,2017, for new issues with similar remaining maturities, and approximated carrying value. In addition, based on borrowing rates currently available to the Company for borrowings with similar terms, the carrying values of the Company's capital lease obligations also approximated fair value.

4. Contracts in Process

The net asset position for contracts in process consisted of the following:

The net asset position for contracts in process included in the accompanying consolidated balance sheets was as follows:

5. Lease Obligations

From time to time, the Company enters into leasing arrangements for real estate, vehicles and construction equipment. Some of the leases entered into under these agreements were recorded as capital leases while others were treated as operating leases. As of March 31, 2017, the Company had no outstanding commitments to enter into future leases under its master lease agreements.

Capital Leases

The Company leases some vehicles and equipment under capital leases. The economic substance of the leases is a financing transaction for acquisition of the vehicles and equipment and, accordingly, these leases are included in the balance sheets in property and equipment, net of accumulated depreciation, with a corresponding amount recorded in current portion of capital lease obligations or capital lease obligations, net of current maturities, as appropriate. The capital lease assets are amortized over the life of the lease or, if shorter, the life of the leased asset, on a straight-line basis and included in depreciation expense in the statements of operations. The interest associated with capital leases is included in interest expense in the statements of operations.

As of March 31, 2017, the Company had approximately $4.6 million of capital lease obligations outstanding, $1.1 million of which was classified as a current liability. As of December 31, 2016, the Company had approximately $4.9 million of capital lease obligations outstanding, $1.1 million of which was classified as a current liability.

As of March 31, 2017 and December 31, 2016, $4.7 million and $5.0 million, respectively, of leased assets were capitalized in construction equipment, net of accumulated depreciation.

Operating Leases

The Company leases real estate, construction equipment and office equipment under operating leases with remaining terms ranging from one to five years.

The future minimum lease payments required under capital leases and operating leases, together with their present value of capital leases, as of March 31, 2017 were as follows:

6. Debt

On June 30, 2016, the Company entered into a five-year amended and restated credit agreement (the “Credit Agreement”) with a syndicate of banks led by JPMorgan Chase Bank, N.A. and Bank of America, N.A. The Credit Agreement provides for a facility of $250 million (the “Facility”) that may be used for revolving loans and letters of credit. The Facility also allows for revolving loans and letters of credit in Canadian dollars and other currencies, up to the U.S. dollar equivalent of $50 million. The Company has an expansion option to increase the commitments under the Facility or enter into incremental term loans, subject to certain conditions, by up to an additional $100 million upon receipt of additional commitments from new or existing lenders. Subject to certain exceptions, the Facility is secured by substantially all of the assets of the Company and its domestic subsidiaries and by a pledge of substantially all of the capital stock of the Company’s domestic subsidiaries and 65% of the capital stock of the direct foreign subsidiaries of the Company. Additionally, subject to certain exceptions, the Company’s domestic subsidiaries also guarantee the repayment of all amounts due under the Credit Agreement. If an event of default occurs and is continuing, on the terms and subject to the conditions set forth in the Credit Agreement, amounts outstanding under the Facility may be accelerated and may become or be declared immediately due and payable. Borrowings under the Credit Agreement have been, and will be,are used for refinancing existing debt, working capital, capital expenditures, acquisitions, stock repurchases and other general corporate purposes.

Amounts borrowed under the Credit Agreement in U.S. dollars bear interest, at the Company’s option, at a rate equal to either (1) the Alternate Base Rate (as defined in the Credit Agreement), plus an applicable margin ranging from 0.00% to 1.00%; or (2) Adjusted LIBO Rate (as defined in the Credit Agreement) plus an applicable margin ranging from 1.00% to 2.00%. Amounts borrowed under the Credit Agreement in any currency other than U.S. dollars bear interest at a rate equal to the Adjusted LIBO Rate plus an applicable margin ranging from 1.00% to 2.00%. The applicable margin is determined based on the Company’s consolidated Leverage Ratioleverage ratio (the “Leverage Ratio”) which is defined in the Credit Agreement as Consolidated Total Indebtedness divided by Consolidated EBITDA (as defined in the Credit Agreement). Letters of credit issued under the Facility are subject to a letter of credit fee of 1.125% to 2.125% for standby or commercialnon-performance letters of credit or 0.625% to 1.125% for performance letters of credit, based on the Company’s consolidated Leverage Ratio. The Company is subject to a commitment fee of 0.20% to 0.375%, based on the Company’s consolidated Leverage Ratio, on any unused portion of the Facility. The Credit Agreement restricts certain types of payments when the Company’s consolidated Leverage Ratio exceeds 2.25. The weighted average interest rate on borrowings outstanding throughfor the three months ended March 31, 2017,2018, was 2.09%2.75% per annum.

Under the Credit Agreement, the Company is subject to certain financial covenants and must maintain a maximum consolidated Leverage Ratio of 3.0 and a minimum interest coverage ratio of 3.0, which is defined in the Credit Agreement as Consolidated EBITDA (as defined in the Credit Agreement) divided by interest expense.expense (as defined in the Credit Agreement). The Credit Agreement also contains a number of covenants, including limitations on asset sales, investments, indebtedness and liens. In connection with any permitted acquisition where the total consideration exceeds $50 million, the Company may request that the maximum permitted consolidated Leverage Ratio increase from 3.0 to 3.5. Any such increase if given effect, shall begin in the quarter in which such permitted acquisition is consummated and shall continue in effect for four consecutive fiscal quarters. The Company was in compliance with all of its covenants under the Credit Agreement as of March 31, 2017.2018.

The amount outstanding underon the Facility as of March 31, 20172018 and December 31, 2016,2017, was $39.6$67.4 million and $59.1$79.0 million, respectively.

As of March 31, 2017 and December 31, 2016,2018, the Company had irrevocable standby letters of credit outstanding under the Facility of approximately $23.7$20.6 million, including $17.6 million related to the Company’s payment obligation under its insurance programs and approximately $6.1$3.0 million related to contract performance obligations. As of December 31, 2017, the Company had irrevocable standby letters of credit outstanding under the Facility of approximately $20.9 million, including $17.6 million related to the Company’s payment obligation under its insurance programs and approximately $3.3 million related to contract performance obligations.

The Company has remaining deferred debt issuance costs totaling $0.9$0.7 million as of March 31, 2017,2018, related to entry into the Credit Agreement.line of credit. As permitted under ASU No. 2015-15, debt issuance costs have been deferred and are presented as an asset within other assets, which is amortized as interest expense over the term of the Facility.line of credit.

7.6. Income Taxes

The U.S. federal statutory tax rate was 21% for the three months ended March 31, 2018 and 35% for the three months ended March 31, 2017. The Company’s effective tax rates for the three months ended March 31, 2018 was 28.9% of pretax income. The Company had a net tax benefit for the three months ended March 31, 2017 which represented 42.7% of pretax income.

The difference between the U.S. federal statutory tax rate of 35%and the Company’s effective tax rate for the three months ended March 31, 2018 was primarily due to state income taxes and the inability to utilize losses experienced in certain Canadian operations. The difference between the U.S. federal statutory tax rate and the Company’s effective tax rates for the three months ended March 31, 2017 was primarily due to inclusion of excess tax benefits related tohe adoptionrelating to the vesting of ASU No. 2016-09,Compensation—Stock Compensation (Topic 718),stock awards and state income taxes.For the three months ended March 31, 2017, $0.8 million in excess tax benefitsexercise of stock options related to the Company’s stock compensation have been reflected as income tax benefit in the Consolidated Statement of Operationsprogram, and Comprehensive Income; prior to adoption of ASU No. 2016-09, this amount would have been recorded to additional paid-in capital. Due predominately to the inclusion of the excess tax benefit the Company had a net tax benefit for the three months ended March 31, 2017. The tax benefit in three months ended March 31, 2017 represented 42.7% of pretax income, compared to the effective rate for the three months ended March 31, 2016 of 38.6%.The difference between the U.S. federal statutory tax rate and the Company’s effective tax rate for the three months ended March 31, 2016 was primarily due to state income taxes.

The Company had unrecognized tax benefits of approximately $0.3$0.8 million as of March 31, 20172018 and December 31, 2016,2017, which were included in other liabilities in the accompanying consolidated balance sheets.

The Company’s policy is to recognize interest and penalties related to income tax liabilities as a component of income tax expense in the consolidated statements of operations. The amount of interest and penalties charged to income tax expense because of the unrecognized tax benefits was not significant for the three months ended March 31, 20172018 and 2016.2017.

The Company is subject to taxation in various jurisdictions. The Company’s tax returnreturns for 2015 isand 2016 are subject to examination by U.S. federal authorities. The Company’s tax returns are subject to examination by various state authorities for the years 20122013 through 2015.2016.

8.7. Commitments and Contingencies

Purchase Commitments

As of March 31, 2017,2018, the Company had approximately $3.7$14.0 million in outstanding purchase orders for certain construction equipment, with cash outlay scheduled to occur over the next fivenine months.

Insurance and Claims Accruals

The Company carries insurance policies, which are subject to certain deductibles, for workers’ compensation, general liability, automobile liability and other coverages. The deductible per occurrence for each line of coverage is up to $1.0 million, except for wildfire coverage which has a deductible of $2.0 million. The Company’s health benefit plans are subject to a deductibledeductibles of up to $0.2 million for qualified individuals. Losses up to the deductible amounts are accrued based upon the Company’s estimates of the ultimate liability for claims reported and an estimate of claims incurred but not yet reported.

The insurance and claims accruals are based on known facts, actuarial estimates and historical trends. While recorded accruals are based on the ultimate liability, which includes amounts in excess of the deductible, a corresponding receivable for amounts in excess of the deductible is included in current and long-term assets in the consolidated balance sheets.

Performance and Payment Bonds and Parent Guarantees

In certain circumstances, the Company is required to provide performance and payment bonds in connection with its future performance on certain contractual commitments. The Company has indemnified its sureties for any expenses paid out under these bonds. As of March 31, 2017,2018, an aggregate of approximately $526.8$540.4 million in original face amount of bonds issued by the Company’s sureties were outstanding. Our estimated remaining cost to complete these bonded projects was approximately $56.7$101.7 million as of March 31, 2017.2018.

From time to time the Company guarantees the obligations of wholly owned subsidiaries, including obligations under certain contracts with customers, certain lease agreements, and, in some states, obligations in connection with obtaining contractors’ licenses. Additionally, from time to time the Company is required to post letters of credit to guarantee the obligations of wholly owned subsidiaries, which reduces the borrowing availability under the Facility.

Indemnities

From time to time, pursuant to its service arrangements, the Company indemnifies its customers for claims related to the services it provides under those service arrangements. These indemnification obligations may subject the Company to indemnity claims and liabilities and related litigation. The Company is not aware of any material unrecorded liabilities for asserted claims in connection with these indemnification obligations.

Collective Bargaining Agreements

Many of the Company’s subsidiaries’ craft labor employees are covered by collective bargaining agreements. The agreements require the subsidiaries to pay specified wages, provide certain benefits and contribute certain amounts to multi-employer pension plans. If a subsidiary withdraws from any of the multi-employer pension plans or if the plans were to otherwise become underfunded, the subsidiary could incur liabilities for additional contributions related to these plans. Although the Company has been informed that the underfunding of some of the multi-employer pension plans to which its subsidiaries contribute have been classified as “critical” status, the Company is not currently aware of any potential liabilities related to this issue.

Litigation and Other Legal Matters

The Company is from time-to-time party to various lawsuits, claims, and other legal proceedings that arise in the ordinary course of business. These actions typically seek, among other things, compensation for alleged personal injury, breach of contract, property damages, punitive damages, civil penalties or other losses, or injunctive or declaratory relief.

The Company is routinely subject to other civil claims, litigation and arbitration, and regulatory investigations arising in the ordinary course of our business, as well as in respect of our divested businesses. These claims, lawsuits and other proceedings include claims related to the Company’s current services and operations, as well as our historic operations.

With respect to all such lawsuits, claims and proceedings, the Company records reserves when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. The Company does not believe that any of these proceedings, separately or in the aggregate, would be expected to have a material adverse effect on the Company’s financial position, results of operations or cash flows.

8. Lease Obligations

From time to time, the Company enters into leasing arrangements for real estate, vehicles and construction equipment, including master leasing arrangements for vehicles and construction equipment. Some of the leases entered into under these agreements met the requirements for capitalization and were recorded as capital leases, while others were treated as operating leases. As of March 31, 2018, the Company had no outstanding commitments to enter into future leases under its master lease agreements.

Capital Leases

The Company leases some vehicles and certain equipment under capital leases. The economic substance of the leases is a financing transaction for acquisition of the vehicles and equipment. Accordingly, these leases are included in the balance sheets in property and equipment, net of accumulated depreciation, with a corresponding amount recorded in current portion of capital lease obligations or capital lease obligations, net of current maturities, as appropriate. The capital lease assets are amortized over the life of the lease or, if shorter, the life of the leased asset, on a straight-line basis and included in depreciation expense in the statements of operations. The interest associated with capital lease obligations is included in interest expense in the statements of operations.

As of March 31, 2018, the Company had approximately $3.4 million of capital lease obligations outstanding, $1.1 million of which was classified as a current liability. As of December 31, 2017, the Company had approximately $3.7 million of capital lease obligations outstanding, $1.1 million of which was classified as a current liability.

As of March 31, 2018 and December 31, 2017, $3.4 million and $3.7 million, respectively, of leased assets were capitalized in construction equipment, net of accumulated depreciation.

Operating Leases

The Company, from time to time, leases real estate, construction equipment and office equipment under operating leases with remaining terms ranging from one to six years.

Future Minimum Lease Payments

The future minimum lease payments required under capital leases and operating leases, together with the present value of capital leases, as of March 31, 2018 were as follows:

9. Stock-Based Compensation

The Company grantsmaintains two equity compensation plans under which stock-based compensation under itshas been granted: the 2017 Long-Term Incentive Plan, (the “LTIP”) and the 2007 Long-Term Incentive Plan as amended (the “LTIP”“2007 Plan”). Upon the adoption of the LTIP during the second quarter of 2017, awards were no longer granted under the 2007 Plan. The LTIP provides for grants of (a) incentive stock options qualified as such under U.S. federal income tax laws, (b) stock options that do not qualify as incentive stock options, (c) stock appreciation rights, (d) restricted stock awards, (e) restricted stock units, (f) performance share awards, (f)(g) phantom stock, (g)(h) stock bonuses, (h)(i) dividend equivalents, and (i)(j) any combination of such awards.

The company grants time-vested stock awards in the form of restricted stock awards, restricted stock units or equity-settled phantom stock. During the three months ended March 31, 2017,2018, the Company granted 43,97268,665 shares of restrictedtime-vested stock awards under the LTIP, which primarily vest ratably over three years, at a weighted average grant date fair value of $39.52.$30.14. Additionally, 76,83162,369 shares of restrictedtime-vested stock awards vested during the three months ended March 31, 2017,2018, at a weighted average grant date fair value of $24.80.$29.47.

During the three months ended March 31, 2017,2018, the Company granted 47,45466,764 performance share awards under the LTIP at target, which cliff vest on December 31, 2019,2020, at a weighted average grant date fair value of $47.12.$34.52. The number of shares actually earned under a performance award may vary from zero to 200% of the target shares awarded, based upon the Company’s performance compared to certain metrics. The metrics used were determined at grant by the Compensation Committee of the Board of Directors and were either based on internal measures, such as the Company’s financial performance compared to target, or on a market-based metric, such as the Company’s stock performance compared to a peer group. Performance awards cliff vest upon attainment of the stated performance targets and minimum service requirements and are paid in common shares of the Company’s stock. During the three months ended March 31, 2018, management concluded that it was probable that the minimum performance criteria would not be met for certain performance shares that were granted during 2016. As a result, during the first quarter of 2018, the Company reversed $0.4 million in stock compensation from previous accruals.

During the three months ended March 31, 2018, plan participants exercised 24,009 stock options with a weighted average exercise price of $24.23.

The Company recognizes stock-based compensation expense related to restricted stock awards, phantom stock awards and restricted stock units based on the grant date fair value, which was the closing price of the Company’s stock on the date of grant. The fair value is expensed over the service period of 3.0 years.period. The Company recognizes stock-based compensation expense related to market-based performance awards based on the grant date fair value, which is computed using a Monte Carlo simulation. The fair value is expensed over the service period, which is approximately 2.8 years. The Company recognizes stock-based compensation expense related to internal measure-based performance awards based on the grant date fair value, which was the closing price of the Company’s stock on the date of grant. The fair value is expensed over the service period of approximately 2.8 years, and the Company adjusts the stock-based compensation expense related to internal metric-based performance awards according to its determination of the potential achievement of the performance target at each reporting date.

During the three months ended March 31, 2017, plan participants exercised 55,995 stock options with a weighted average exercise price of $16.27.

The Company adopted ASU No. 2016-09,Compensation—Stock Compensation (Topic 718) on January 1, 2017. The adoption is required to be implemented prospectively and resulted in income tax benefits of $0.8 million for the three months ended March 31, 2017. Additionally, the Company has elected to account for forfeitures as they occur, rather than estimate expected forfeitures. The net cumulative effect of this change was recognized as a $0.2 million reduction to retained earnings as of January 1, 2017 with a corresponding increase in additional paid in capital. See Note 1 to the Financial Statements for further information regarding ASU No. 2016-09,Compensation—Stock Compensation (Topic 718).

10. Segment Information

MYR Group is a holding company of specialty contractorcontractors serving electrical utility infrastructure and commercial construction markets in the United States and Canadian electrical infrastructure markets.western Canada. The Company has two reporting segments, each a separate operating segment, which are referred to as T&D and C&I. Performance measurement and resource allocation for the reporting segments are based on many factors. The primary financial measures used to evaluate the segment information are contract revenues and income from operations, excluding general corporate expenses. General corporate expenses include corporate facility and staffing costs, which includes safety costs, professional fees, IT expenses, management fees, and intangible amortization. The accounting policies of the segments are the same as those described in the Summary of Significant Accounting Policies in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.2017.

Transmission and Distribution: The T&D segment provides a broad range of services on electric transmission and distribution networks and substation facilities which include design, engineering, procurement, construction, upgrade, maintenance and repair services with a particular focus on construction, maintenance and repair. T&D services include the construction and maintenance of high voltage transmission lines, substations and lower voltage underground and overhead distribution systems. The T&D segment also provides emergency restoration services in response to hurricane, ice or other storm-related damage. T&D customers include investor-owned utilities, cooperatives, private developers, government-funded utilities, independent power producers, independent transmission companies, industrial facility owners and other contractors.

Commercial and Industrial: The C&I segment provides services such as the design, installation, maintenance and repair of commercial and industrial wiring, installation of traffic networks and the installation of bridge, roadway and tunnel lighting. Typical C&I contracts cover electrical contracting services for airports, hospitals, data centers, hotels, stadiums, convention centers, manufacturing plants, processing facilities, waste-water treatment facilities, mining facilities and transportation control and management systems. C&I segment services are generally performed in the western and northeastern United States and in western Canada. The C&I segment generally provides electric construction and maintenance services as a subcontractor to general contractors in the C&I industry, but also contracts directly with facility owners. The C&I segment has a diverse customer base with many long-standing relationships.

The information in the following table is derived from the segment’s internal financial reports used for corporate management purposes:

For the three months ended March 31, 2018, contract revenues attributable to the Company’s Canadian operations were $14.7 million, predominantly in the C&I segment. For the three months ended March 31, 2017, and 2016, contract revenues attributable to the Company’s Canadian operations were $19.2 million, and $1.2 million, respectively. For the three months ended March 31, 2017 the Company’s Canadian revenues were predominantly in the C&I segment, due to the acquisition of WPE and predominantly in the T&D segment for the three months ended March 31, 2016.segment.

11. Earnings Per Share

The Company computes earnings per share using the treasury stock method unless the two-class method is more dilutive. The Company computed earnings per share for the three months ended March 31, 2017 and 2016 using the treasury stock method. Under the treasury stock method, basic earnings per share are computed by dividing net income available to shareholders by the weighted average number of common shares outstanding during the period, and diluted earnings per share are computed by dividing net income available to shareholders by the weighted average number of common shares outstanding during the period plus all potentially dilutive common stock equivalents, except in cases where the effect of the common stock equivalent would be anti-dilutive.

Net income available to common shareholders and the weighted average number of common shares used to compute basic and diluted earnings per share were as follows:

For the three months ended March 31, 20172018 and 2016,2017, certain common stock equivalents were excluded from the calculation of dilutive securities because their inclusion would either have been anti-dilutive or, for stock options, the exercise prices of those stock options were greater than the average market price of the Company’s common stock for the period. All of the Company’s non-participating unvested restricted shares were included in the computation of weighted average dilutive securities.

The following table summarizes the shares of common stock underlying the Company’s unvested stock options and performance awards that were excluded from the calculation of dilutive securities:

The Company adopted ASU No. 2016-09,Compensation—Stock Compensation (Topic 718)on January 1, 2017. The adoption is required to be implemented prospectively and requires excess tax benefits and deficiencies to be prospectively excluded from assumed future proceeds in the calculation of diluted shares, resulting in an increase in diluted weighted average shares outstanding of 0.1 million for the three months ended March 31, 2017. See Note 1 to the Financial Statements for further information regarding ASU No. 2016-09,Compensation—Stock Compensation (Topic 718).

ITEM 2.          MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion should be read in conjunction with the accompanying unaudited consolidated financial statements and with our Annual Report on Form 10-K for the year ended December 31, 20162017 (the “2016“2017 Annual Report”). In addition to historical information, this discussion contains forward-looking statements that involve risks, uncertainties and assumptions that could cause actual results to differ materially from management’s expectations. Factors that could cause such differences are discussed herein under the captions “Cautionary Statement Concerning Forward-Looking Statements and Information” and “Risk Factors,” as well as in the 20162017 Annual Report. We assume no obligation to update any of these forward-looking statements.

Overview and Outlook

We are a leadingholding company of specialty contractor servingelectrical construction service providers that was established through the electricalmerger of long-standing specialty contractors. Through our subsidiaries, we serve the electric utility infrastructure, market.commercial and industrial construction markets. We manage and report our operations through two industry segments: T&D and C&I. We have operated in the T&D industry since 1891. We are one of the largest contractors servicing the T&D sector of the electric utility industry in the United States and are expanding our T&Dalso provide electrical construction services intoin western Canada. Our customers include many of the leading companies in the industry. We have provided C&I electrical contracting services to facility owners and general contractors since 1912. We generally provide our C&I services as a subcontractor to general contractors, but also contract directly with facility owners.

We had consolidated revenues for the three months ended March 31, 20172018 of $300.1$345.6 million, of which 65.2%62.6% was attributable to our T&D customers and 34.8%37.4% was attributable to our C&I customers. Our consolidated revenues for the three months ended March 31, 20162017 were $253.6$300.1 million. For the three months ended March 31, 2017,2018, our net income and EBITDA (1) were $1.2$5.6 million and $11.0$18.0 million, respectively, compared to $2.0$1.2 million and $13.3$11.1 million, respectively, for the three months ended March 31, 2016.2017.

We believe there is an ongoing need for utilities to sustain investment in their transmission systems to improve reliability and reduce congestion. Consequently, we believe we will continue to see significant bidding activity on large transmission projects through the remainder of this year as well as in 2018.2019. The timing of multi-year transmission project awards and substantial construction activity is difficult to predict due to regulatory requirements and right-of-way permits needed to commence construction. Significant construction on any large, multi-year projects awarded this year will not likely occur until 2018.2019. Bidding and construction activity for small to medium-size transmission projects and upgrades remains strong, and we expect this trend to continue, primarily due to electric infrastructure reliability and economic drivers. Competition and the unpredictability of awards in the transmission market may impact our ability to maintain adequatehigh utilization of equipment and manpower resources, which is importantessential to maintaining contract margins. In addition, project execution, adverse weather and project delays, among other factors, have impacted our margins in the past and could affect our margins in the future. We believe that spending by clients on their distribution systems is generally improving; however, this spending can be highly variable from quarter to quarter in response to weather, client budget constraints and regulatory pressures. Contract margins and fleet billing rates are generally lower in our distribution business than what we realize in our transmission business.

We expect to see continued improvement in bidding opportunities in our C&I segment throughout the remainder of this year. We expect the long-term growth in our C&I segment to generally track the economic growth of the regions we serve and benefit to the extent economic conditions continue to improve in the markets we serve. We also expect to see an improvement inincreased bidding opportunities as we penetratein the new C&I markets we recently entered through our strategic acquisitions and organic expansions.

We strive to maintain our status as a preferred provider to our T&D and C&I customers. We continue to implement a three-pronged strategy of organic growth and strategic acquisitions that further expand our capabilities and prudent capital returns as further described below.

Organic Growth We continue to evaluate opportunities to expand our operations into new markets in the United States and Canada. We expanded our C&I services into California in 2016 and Utah in 2017, while continuing to support previous growth areas.

Strategic Acquisitions On October 28, 2016, we acquired substantially all of the assets of Western Pacific Enterprises, which expanded our C&I operations and enhanced our T&D presence in western and central Canada. We continue to look for acquisition opportunities that are compatible with our culture while enhancing shareholder value.

Prudent Capital ReturnsUnder our share repurchase program, we have repurchased a total of 6,024,978 shares of our common stock for an average share price of $23.64 per share. As of March 31, 2017, we had $20.0 million of remaining availability to purchase shares under the program, which continues in effect until August 15, 2017.

returns. We continue to invest in developing key management and craft personnel in both our T&D and C&I markets and in procuring the specialty equipment and tooling needed to win and execute projects of all sizes and complexity. We ended the first quarter of 20172018 with $186.7$162.0 million available under our Facility.credit facility. We believe that our financial position and operational strengths will enable us to manage the current challenges and uncertainties in the markets we serve and give us the flexibility to successfully execute our three-pronged strategy.

Backlog

We define backlog asrefer to our estimated revenue on uncompleted contracts, including the amount of revenue on contracts for which work has not begun, less the revenue we have recognized under these contracts.such contracts, as “backlog.” A customer’s intention to award us work under a fixed-price contract is not included in backlog unless there is an actual written award to perform a specific scope of work at specific terms and pricing. For many of our unit-price, time-and-equipment, time-and-materials and cost plus contracts, we only include projected revenue for a three-month period in the calculation of backlog, although these types of contracts are generally awarded as part of master service agreements that typically have a one-year to three-year duration from execution. Backlog may not accurately represent the revenues that we expect to realize during any particular period. Several factors, such as the timing of contract awards, the type and duration of contracts, and the mix of subcontractor and material costs in our projects, can impact our backlog at any point in time. Some of our revenue does not appear in our periodic backlog reporting because the award of the project, as well as the execution of the work, may all take place within the period. Our backlog only includes projects that have a signed contractwritten award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions. Backlog should not be relied upon as a stand-alone indicator of future events. Additionally, the difference between our backlog and remaining performance obligations is due to the exclusion of a portion of our master service agreements under certain contract types from our remaining performance obligations as these contracts can be canceled for convenience at any time by us or the customer without considerable cost incurred by the customer. Our estimated backlog also includes our proportionate share of unconsolidated joint venture contracts. Additional information related to our remaining performance obligations is provided in Note 2–Revenue Recognition to the Financial Statements.

Our backlog was $958.5 million at March 31, 2018, compared to $679.1 million at December 31, 2017 and $660.9 million at March 31, 2017 compared to $688.8 million at December 31, 2016 and $434.8 million at March 31, 2016.2017. Our backlog at March 31, 2017 decreased $27.92018 increased $279.4 million, or 4.1%41.1%, from December 31, 2016.2017. Backlog in the T&D segment decreased $29.7increased $101.2 million and C&I backlog increased $1.8$178.2 million compared to December 31, 2016.2017. Our backlog as of March 31, 2018 included our proportionate share of unconsolidated joint venture backlog totaling $50.5 million, compared to $27.6 million at December 31, 2017. The increase in backlog is primarily due to the addition of the previously announced Denver Central 70 Project and various small and mid-sized T&D projects.

The following table summarizes that amount of our backlog that we believe to be firm as of the dates shown and the amount of our current backlog that we reasonably estimate will not be recognized within the next twelve months:

Project Bonding Requirements and Parent Guarantees

A substantial portion of our business requires performance and payment bonds or other means of financial assurance to secure contractual performance. These bonds are typically issued at the face value of the contract awarded. If we fail to perform or pay our subcontractors or vendors, the customer may demand that the surety provide services or make payments under the bond. In such a case, we would likely be required to reimburse the surety for any expenses or outlays it incurs. To date, we have not been required to make any reimbursements to our sureties for claims against our surety bonds. As of March 31, 2017,2018, we had approximately $526.8$540.4 million in original face amount of surety bonds outstanding. Our estimated remaining cost to complete these bonded projects was approximately $56.7$101.7 million as of March 31, 2017.2018.

From time to time we guarantee the obligations of our wholly owned subsidiaries, including obligations under certain contracts with customers, certain lease agreements, and, in some states, obligations in connection with obtaining contractors’ licenses. Additionally, from time to time we are required to post letters of credit to guarantee the obligations of our wholly owned subsidiaries, which reduces the borrowing availability under our credit facility.

Consolidated Results of Operations

The following table sets forth selected consolidated statements of operations data and such data as a percentage of revenues for the periods indicated:

Three Months Ended March 31, 20172018 Compared to Three Months Ended March 31, 20162017

Revenues. Revenues increased $46.5$45.5 million, or 18.3%15.2%, to $345.6 million for the three months ended March 31, 2018 from $300.1 million for the three months ended March 31, 2017 from $253.6 million for the three months ended March 31, 2016.2017. The increase was primarily due to higher C&I revenues in new markets (including WPE) and established markets, and higheran increase in distribution revenues.

Gross margin. Gross margin decreasedincreased to 10.3% for the three months ended March 31, 2018 from 8.6% for the three months ended March 31, 2017 from 10.8% for the three months ended March 31, 2016.2017. The decreaseincrease in gross margin was largely due to declinesimprovements in efficiency duecompared to the prior year, which was significantly impacted by inclement weather in many of our markets and a higherhigh mix of smaller, shorter duration T&D work. The shift in the mix of work also caused a decline in our fleet utilization and increased mobilization and demobilization costs. These impacts were partially offset by settlements related to previously unrecognized revenue on a project claim and pending change orders. Changes in estimates of gross profit on certain projects resulted in a gross margin increasedecrease of 0.4%0.1% for the three months ended March 31, 2017 and a decrease2018. Gross margin increased 0.4% due to changes in estimates of 0.6%gross profit on certain projects for the three months ended March 31, 2016.2017.

Gross profit. Gross profit decreased $1.6increased $10.1 million, or 5.6%38.9%, to $35.8 million for the three months ended March 31, 2018 from $25.7 million for the three months ended March 31, 2017, from $27.3 million for the three months ended March 31, 2016,primarily due to lower overall gross margin, partially offset by higher revenue.revenues and increased margins.

Selling, general and administrative expenses. Selling, general and administrative expenses (“SG&A”), of $28.3 million for the three months ended March 31, 2018 increased $2.5 million from $25.8 million for the three months ended March 31, 2017, increased $1.9 million from $23.9 million for the three months ended March 31, 2016.2017. The year-over-year increase was primarily due to $2.3 million of costs associated with our expansion into new geographic markets and higher payroll costs to support operations, partially offset by lower bonus and profit sharing costs. Additionally, $1.0 million of costs associated with activist investor activities were incurred in the three months ended March 31, 2016. As a percentage of revenues, SG&A decreased to 8.2% for the three months ended March 31, 2018 from 8.6% for the three months ended March 31, 2017 from 9.4% for the three months ended March 31, 2016.2017.

Gain on sale of property and equipment. Gains from the sale of property and equipment infor the three months ended March 31, 20172018 were $0.7$1.1 million compared to $0.1$0.7 million infor the three months ended March 31, 2016.2017. Gains from the sale of property and equipment are attributable to routine sales of property and equipment no longer useful or valuable to our ongoing operations.

Interest expense. Interest expense was $0.7 million for the three months ended March 31, 2018 compared to $0.5 million for the three months ended March 31, 2017 compared to $0.2 million in the three months ended March 31, 2016.2017. This increase was primarily attributable to the amount and length of time borrowings outstanding onunder our line of credit and the length of time borrowings were outstanding during the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017.

Other income.Other income was $0.2 million for the three months ended March 31, 2018 compared to other income of $0.9 million for the three months ended March 31, 2017. The change was primarily attributable to contingent consideration related to margin guarantees on certain contracts associated with the acquisition of Western Pacific Enterprises Ltd. recognized in the three months ended March 31, 2017.

Other Income.Income tax expense.Other The income tax provision was $0.9$2.3 million for the three months ended March 31, 2017 compared to $0.1 million in2018, with an effective tax rate of 28.9%. In the three months ended March 31, 2016. The increase was primarily attributable to contingent consideration related to margin guarantees of $0.9 million recognized on certain contracts associated with the acquisition of WPE.

Income tax expense. The2017 we had an income tax benefit wasof $0.4 million, which represented 42.7% of pretax income. The effective tax rate for the three months ended March 31, 2017 compared to a provision2018 benefited from the enactment of $1.2 million for the three months ended March 31, 2016. The tax benefit in the three months ended March 31, 2017 represented 42.7% of pretax income, compared to an effective tax rate of 38.6% for the three months ended March 31, 2016.United States Tax Cuts and Jobs Act on December 22, 2017. The tax benefit in the three months ended March 31, 2017 was caused by excess tax benefits of approximately $0.8 million pertaining to the vesting of stock awards and the exercise of stock options. Withoptions related to the adoption of ASU No. 2016-09,Compensation—Stock Compensation (Topic 718), the tax benefit fromCompany’s stock compensation is no longer recorded to additional paid-in capital; rather, it is included in the current tax provision as a discrete item.program.

Net income. Net income decreasedincreased to $5.6 million for the three months ended March 31, 2018 from $1.2 million for the three months ended March 31, 2017 from $2.0 million for the three months ended March 31, 2016.2017. The decreaseincrease was primarily for the reasons stated earlier.

Segment Results

The following table sets forth, for the periods indicated, statements of operations data by segment, segment net sales as percentage of total net sales and segment operating income as a percentage of segment net sales:

Transmission & Distribution

Revenues for our T&D segment for the three months ended March 31, 20172018 were $195.7$216.4 million compared to $183.0$195.7 million for the three months ended March 31, 2016,2017, an increase of $12.7$20.7 million, or 7.0%10.6%. The increase in revenue was primarily due to an increase in distribution projects.revenue.

Revenues from transmission projects represented 72.2%62.1% and 77.2%72.2% of T&D segment revenue for the three months ended March 31, 20172018 and 2016,2017, respectively. Additionally, for the three months ended March 31, 2017,2018, measured by revenue in our T&D segment, we provided 35.1%36.7% of our T&D services under fixed-price contracts, as compared to 55.1%35.1% for the three months ended March 31, 2016.2017.

Operating income for our T&D segment for the three months ended March 31, 20172018 was $5.1$13.5 million, a decreasean increase of $5.5$8.4 million from the three months ended March 31, 2016.2017. The declineincrease in T&D operating income was primarily due to declinesimprovements in efficiency due tofrom the prior year, which was significantly impacted by inclement weather, in many of our markets and a higher mix of smaller, shorter duration work. The shift in the mix of work also caused a decline in our fleet utilization and increased mobilization and demobilization costs. These impacts were partially offset by resolution of pending project change orders that were previously not recognized in revenue. As a percentage of revenues, operating income for our T&D segment was 6.3% for the three months ended March 31, 2018 compared to 2.6% for the three months ended March 31, 2017 compared to 5.8% for the three months ended March 31, 2016.2017.

Commercial & Industrial

Revenues for our C&I segment for the three months ended March 31, 20172018 were $104.4$129.2 million compared to $70.7$104.4 million for the three months ended March 31, 2016,2017, an increase of $33.7$24.8 million, or 47.7%23.8%, primarily due to increased spending from new and existing customers and increased volume at certain organic and acquisitive expansion into new markets and a general improvement of the C&I construction market.locations.

Measured by revenue in our C&I segment, we provided 66.8%69.0% of our services under fixed-price contracts for the three months ended March 31, 2017,2018, compared to 71.3% in66.8% for the three months ended March 31, 2016.2017.

Operating income for our C&I segment for the three months ended March 31, 20172018 was $4.4$5.3 million, an increase of $2.3$0.9 million over the three months ended March 31, 2016.2017. The year-over-year increase in operating income was primarily attributable to higher revenue and the settlement of a project claim that was previously not recognized in revenue. These were partially offset by costs associated with organic and acquisitive growth, including the impact of contingent consideration related to margin guarantees of $0.9 million that are classified as other income. As a percentage of revenues, operating income for our C&I segment was 4.1% for the three months ended March 31, 2018 compared to 4.2% for the three months ended March 31, 2017 compared to 3.1% for the three months ended March 31, 2016.2017.

Non-GAAP Measure—EBITDA

We define EBITDA, a performance measure used by management, as net income plus: interest income and expense, provision for income taxes and depreciation and amortization, as shown in the following table.table below. EBITDA, a non-GAAP financial measure, does not purport to be an alternative to net income as a measure of operating performance or to net cash flows provided by operating activities as a measure of liquidity. Because not all companies use identical calculations, this presentation of EBITDA may not be comparable to other similarly-titled measures of other companies. We use, and we believe investors benefit from, the presentation of EBITDA in evaluating our operating performance because it provides us and our investors with an additional tool to compare our operating performance on a consistent basis by removing the impact of certain items that management believes do not directly reflect our core operations. We believe that EBITDA is useful to investors and other external users of our financial statements in evaluating our operating performance and cash flow because EBITDA is widely used by investors to measure a company’s operating performance without regard to items such as interest expense, taxes, depreciation and amortization, which can vary substantially from company to company depending upon accounting methods and book value of assets, bookuseful lives placed on assets, capital structure and the method by which assets were acquired.

Using EBITDA as a performance measure has material limitations as compared to net income, or other financial measures as defined under U.S. GAAP, as it excludes certain recurring items, thatwhich may be meaningful to investors. EBITDA excludes interest expense or interest income; however, as we have borrowed money to finance transactions and operations, or invested available cash to generate interest income, interest expense and interest income are elements of our cost structure and can affect our ability to generate revenue and returns for our stockholders. Further, EBITDA excludes depreciation and amortization; however, as we use capital and intangible assets to generate revenues, depreciation and amortization are a necessary element of our costs and ability to generate revenue. Finally, EBITDA excludes income taxes; however, as we are organized as a corporation, the payment of taxes is a necessary element of our operations. As a result of these exclusions from EBITDA, any measure that excludes interest expense, interest income, depreciation and amortization and income taxes has material limitations as compared to net income. When using EBITDA as a performance measure, management compensates for these limitations by comparing EBITDA to net income in each period, to allow for the comparison of the performance of the underlying core operations with the overall performance of the company on a full-cost, after taxafter-tax basis. Using both EBITDA and net income to evaluate the business allows management and investors to (a) assess our relative performance against our competitors and (b) monitor our capacity to generate returns for our stockholders.

The following table provides a reconciliation of net income to EBITDA:

We also use EBITDA as a liquidity measure. We believe that EBITDA is important for evaluating our ability to comply with certainCertain material covenants contained within our credit agreement (the “Credit Agreement”). are based on EBITDA. Non-compliance with these financial covenants under the Credit Agreement—our interest coverage ratio, which is defined in the Credit Agreement as Consolidated EBITDA (as defined in the Credit Agreement) divided by interest expense (as defined in the Credit Agreement) and our Leverage Ratioleverage ratio, which is defined in the Credit Agreement as Consolidated Total Indebtedness (as defined in the Credit Agreement), divided by Consolidated EBITDA (as defined in the Credit Agreement)—could result in our lenders requiring us to immediately repay all amounts borrowed. If we anticipated a potential covenant violation, we would seek relief from our lenders, likely causing us to incur additional cost, and such relief might not be available, or if available, might not be on terms as favorable as those in the Credit Agreement. In addition, if we cannot satisfy these financial covenants, we would be prohibited under the Credit Agreement from engaging in certain activities, such as incurring additional indebtedness, making certain payments, and acquiring or disposing of assets. Based on the information above, management believes that the presentation of EBITDA as a liquidity measure is useful to investors and relevant to their assessment of our capacity to service or incur debt, fund capital expenditures, finance acquisitions and expand our operations.

The following table provides a reconciliation of net cash flows provided by operating activities to EBITDA:

Liquidity and Capital Resources

As of March 31, 2017 and 2016,2018, we had working capital of $108.0 million and $106.3 million, respectively.$181.6 million. We define working capital as current assets less current liabilities. During the three months ended March 31, 2017,2018, operating activities of our business provided net cash of $13.1$22.0 million, compared to $14.4$13.1 million of cash provided for the three months ended March 31, 2016.2017. Cash flow from operations is primarily influenced by demand for our services, operating margins, timing of contract performance and the type of services we provide to our customers. Net cash provided by operating activities is driven by our net income adjusted for changes in operating assets and liabilities and non-cash items including, but not limited to, depreciation and amortization, stock-based compensation, deferred income taxes, and the gain on sale of property and equipment. The $8.9 million year-over-year declineincrease in net cash provided by operating activities was primarily due a decreaseto favorable net changes in operating assets and liabilities of $0.8$4.7 million and an increase of $4.4 million in net income and $0.7 million decrease in non-cash items, partially offset by a $0.2 millionincome. The favorable change in operating assets and liabilities. The decrease in non-cash itemsliabilities was primarily due to a $0.6the favorable year-over-year increase of $15.3 million in other liabilities, partially offset by unfavorable changes in various working capital accounts that relate primarily to construction activities (accounts receivable, costs and estimated earnings in excess of billings on uncompleted contracts, accounts payable and billings in excess of costs and estimated earnings on uncompleted contracts), of $9.4 million. The increase in gains fromcash provided by other liabilities was due to the saletiming of propertywage and equipment.employment taxes and higher bonus and profit sharing accruals. The decline in cash provided by working capital accounts primarily related to construction activities was due to an increase in working capital requirements needed to support the increase in revenue.

In the three months ended March 31, 2017,2018, we used net cash in investing activities of $9.1$13.4 million, consisting of $10.0$14.5 million for capital expenditures, partially offset by $0.9$1.1 million of proceeds from the sale of equipment.

In the three months ended March 31, 2017,2018, we used net cash of $21.1$12.2 million in financing activities, consisting primarily of $19.5$11.6 million of repayments under our revolving linesline of credit and $2.2$0.9 million of share repurchases, all of which represented shares surrendered to satisfy tax obligations under our stock compensation program.programs.

We anticipate that our $186.7 million borrowing availability of $162.0 million at March 31, 2018 under ourthe credit facility and future cash flow from operations will provide sufficient cash to enable us to meet our future operating needs, debt service requirements, capital expenditures, acquisition and joint venture opportunities, and share repurchases. Although we believe that we have adequate cash and borrowing capacity to meet our liquidity needs, any large projects or acquisitions may require additional capital.

We have not historically paid dividends and currently do not expect to pay dividends.

Debt Instruments

On June 30, 2016, we entered into a five-year amended and restated credit agreement (the “Credit Agreement”)Credit Agreement with a syndicate of banks led by JPMorgan Chase Bank, N.A. and Bank of America, N.A. The Credit Agreement provides for a facility of $250 million (the “Facility”) that may be used for revolving loans and letters of credit. The Facility also allows for revolving loans and letters of credit in Canadian dollars and other currencies, up to the U.S. dollar equivalent of $50 million. We have an expansion option to increase the commitments under the Facility or enter into incremental term loans, subject to certain conditions, by up to an additional $100 million upon receipt of additional commitments from new or existing lenders. Subject to certain exceptions, the Facility is secured by substantially all of our assets and the assets of our domestic subsidiaries and by a pledge of substantially all of the capital stock of our domestic subsidiaries and 65% of the capital stock of our direct foreign subsidiaries. Additionally, subject to certain exceptions, our domestic subsidiaries also guarantee the repayment of all amounts due under the Credit Agreement. If an event of default occurs and is continuing, on the terms and subject to the conditions set forth in the Credit Agreement, amounts outstanding under the Facility may be accelerated and may become or be declared immediately due and payable. Borrowings under the Credit Agreement were used to refinance existing debt and willare expected to be used for refinancing existing debt, working capital, capital expenditures, acquisitions, stock repurchases acquisitions and other general corporate purposes.

Amounts borrowed under the Credit Agreement in U.S. dollars bear interest, at our option, at a rate equal to either (1) the Alternate Base Rate (as defined in the Credit Agreement), plus an applicable margin ranging from 0.00% to 1.00%; or (2) Adjusted LIBO Rate (as defined in the Credit Agreement) plus an applicable margin ranging from 1.00% to 2.00%. Amounts borrowed under the Credit Agreement in any currency other than U.S. dollars bear interest at a rate equal to the Adjusted LIBO Rate plus an applicable margin ranging from 1.00% to 2.00%. The applicable margin is determined based on our consolidated Leverage Ratioleverage ratio (Leverage Ratio) which is defined in the Credit Agreement as Consolidated Total Indebtedness divided by Consolidated EBITDA (as defined in the Credit Agreement). Letters of credit issued under the Facility are subject to a letter of credit fee of 1.125% to 2.125% for standby or commercialnon-performance letters of credit or 0.625% to 1.125% for performance letters of credit, based on the our consolidated Leverage Ratio. We are subject to a commitment fee of 0.20% to 0.375%, based on our consolidated Leverage Ratio, on any unused portion of the Facility. The Credit Agreement restricts certain types of payments when our consolidated Leverage Ratio exceeds 2.25.

Under the Credit Agreement, we are subject to certain financial covenants and must maintain a maximum consolidated Leverage Ratio of 3.0 and a minimum interest coverage ratio of 3.0, which is defined in the Credit Agreement as Consolidated EBITDA (as defined in the Credit Agreement) divided by interest expense.expense (as defined in the Credit Agreement). The Credit Agreement also contains a number of covenants, including limitations on asset sales, investments, indebtedness and liens. In connection with any permitted acquisition where the total consideration exceeds $50 million, we may request that the maximum permitted consolidated Leverage Ratio increase from 3.0 to 3.5. Any such increase, if given effect, shall begin in the quarter in which such permitted acquisition is consummated and shall continue in effect for four consecutive fiscal quarters. We were in compliance with all of the covenants under the Credit Agreement as of March 31, 2017.2018.

As of March 31, 2017,2018, we had $39.6$67.4 million of debt outstanding under the Facility and irrevocable standby letters of credit outstanding of approximately $23.7$20.6 million. As of December 31, 2016,2017, we had $59.1$79.0 million of debt outstanding under the Facility and irrevocable standby letters of credit outstanding of approximately $23.7$20.9 million.

Off-Balance Sheet Transactions

As is common in our industry, we enter into certain off-balance sheet arrangements in the ordinary course of business that result in risks not directly reflected on our balance sheets. Our significant off-balance sheet transactions, such as liabilities associated with non-cancelable operating leases, letter of credit obligations and surety guarantees related to performance bonds, could be entered into in the normal course of business. We have not engaged in any off-balance sheet financing arrangements through special purpose entities.

For a discussion regarding off-balance sheet transactions, refer to Note 8, “Commitments7–Commitments and Contingencies”Contingencies in the accompanying Notesnotes to our Consolidated Financial Statements.

Concentration of Credit Risk

We grant trade credit under normal payment terms, generally without collateral, to our customers, which include high credit quality electric utilities, governmental entities, general contractors and builders, owners and managers of commercial and industrial properties located in the United States. Consequently, we are subject to potential credit risk related to changes in business and economic factors throughout the United States. However, we generally have certain statutory lien rights with respect to services provided. Under certain circumstances such as foreclosures or negotiated settlements, we may take title to the underlying assets in lieu of cash in settlement of receivables. As of March 31, 2018 and 2017, none of our customers individually exceeded 10.0% of consolidated accounts receivable. As of March 31, 2016, one customer individually exceeded 10.0% of consolidated accounts receivable with approximately 17.8% of the total consolidated accounts receivable amount (excluding the impact of allowance for doubtful accounts). Management believes the terms and conditions in its contracts, billing and collection policies are adequate to minimize the potential credit risk.

New Accounting Pronouncements

For a discussion regarding new accounting pronouncements, please refer to Note 1, “Organization,1–Organization, Business and Basis of Presentation—Recently Issued Accounting Pronouncements”Pronouncements in the accompanying Notesnotes to our Consolidated Financial Statements.

Critical Accounting Policies

The discussion and analysis of our financial condition and results of operations are based on our consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities known to exist at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. We evaluate our estimates on an ongoing basis, based on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. There can be no assurance that actual results will not differ from those estimates. For further information regarding our critical accounting policies and estimates, please refer to Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies” included in our 20162017 Annual Report.

Cautionary Statement Concerning Forward-Looking Statements and Information

We are including the following discussion to inform you of some of the risks and uncertainties that can affect our company and to take advantage of the protections for forward-looking statements that applicable federal securities law affords.

Statements in this Quarterly Report on Form 10-Q contain various forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934 (the “Exchange Act”), which represent our beliefs and assumptions concerning future events. When used in this document and in documents incorporated by reference, forward looking statements include, without limitation, statements regarding financial forecasts or projections, and our expectations, beliefs, intentions or future strategies that are signified by the words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “objective,” “outlook,” “plan,” “project,” “likely,” “unlikely,” “possible,” “potential,” “should” or other words that convey the uncertainty of future events or outcomes. The forward looking statements in this quarterly reportQuarterly Report on Form 10-Q speak only as of the date of this quarterly reportQuarterly Report on Form 10-Q. We disclaim any obligation to update these statements (unless required by securities laws), and we caution you not to rely on them unduly. We have based these forward lookingforward-looking statements on our current expectations and assumptions about future events. While we consider these expectations and assumptions to be reasonable, they are inherently subject to significant business, economic, competitive, regulatory and other risks, contingencies and uncertainties, most of which are difficult to predict, and many of which are beyond our control. These and other important factors, including those discussed under the caption “Forward-Looking Statements” and in Item 1A “Risk Factors” in our 20162017 Annual Report, and in any risk factors or cautionary statements contained in our other filings with the Securities and Exchange Commission, may cause our actual results, performance or achievements to differ materially from any future results, performance or achievements expressed or implied by these forward-looking statements.

These risks, contingencies and uncertainties include, but are not limited to, the following: