As filed with the Securities and Exchange Commission on January 13,December 12, 2014

Registration No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-4

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

MidAmerican

Berkshire Hathaway Energy Holdings Company

(Exact name of registrant as specified in its charter)

666 Grand Avenue, Suite 500

Des Moines, Iowa 50309-2580

(515) 242-4300

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Douglas L. Anderson

Executive Vice President and General Counsel

MidAmericanBerkshire Hathaway Energy Holdings Company

1111 South 103^rd Street

Omaha, Nebraska 68124

(402) 231-1642

(Name, address, including zip code, and telephone number, including area code, of agent for service)

With copies to:

Peter J. Hanlon

J. Alan Bannister

Gibson, Dunn & Crutcher LLP

200 Park Avenue

New York, NY 10166-0193

(212) 351-4000

Approximate date of commencement of proposed sale to the public:As soon as practicable following the effective date of this registration statement.

If the securities being registered on this Form are being offered in connection with the formation of a holding company and there is compliance with General Instruction G, check the following box.  ¨

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

If applicable, place an X in the box to designate the appropriate rule provision relied upon in conducting this transaction:

Exchange Act Rule 13e-4(i) (Cross-Border Issuer Tender Offer)  ¨

Exchange Act Rule 14d-1(d) (Cross-Border Third-Party Tender Offer)  ¨

CALCULATION OF REGISTRATION FEE

The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until this registration statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

The information in this prospectus is not complete and may be changed. We may not complete the exchange offer and issuesell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and is not soliciting an offer to buy these securities in any state where the offer or sale is not permitted.

The information in this prospectus is not complete and may be changed. We may not complete the exchange offer and issue these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

Subject to Completion, dated January 13,December 12, 2014

PROSPECTUS

Offer to Exchange

Up to $400,000,000$350,000,000 in aggregate principal amount of

1.100%2.40% Senior Notes due 20172020 that have been registered under the Securities Act of 1933

for all outstanding unregistered 1.100%2.40% Senior Notes due 2017

2020

Up to $350,000,000$400,000,000 in aggregate principal amount of

2.000%3.50% Senior Notes due 20182025 that have been registered under the Securities Act of 1933

for all outstanding unregistered 2.000%3.50% Senior Notes due 2018

2025

Up to $500,000,000$750,000,000 in aggregate principal amount of

3.750%4.50% Senior Notes due 20232045 that have been registered under the Securities Act of 1933

for all outstanding unregistered 3.750%4.50% Senior Notes due 2023

Up to $750,000,000 in aggregate principal amount of

5.150% Senior Notes due 2043 that have been registered under the Securities Act of 1933

for all outstanding unregistered 5.150% Senior Notes due 20432045

See “Risk Factors” beginning on page 98 for a discussion of matters you should consider before you participate in the Exchange Offer.

Neither the U.S. Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or the accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this prospectus is                     , 2014

TABLE OF CONTENTS

In this prospectus, unless otherwise indicated or the context otherwise requires, references to “MEHC,“BHE,” “we,” “us” and “our” refer to MidAmericanBerkshire Hathaway Energy Holdings Company, an Iowa corporation.

This prospectus incorporates important business and financial information about us that is not included or delivered with this prospectus. We will provide this information to you at no charge upon written or oral request directed to Vice President and Treasurer, MidAmericanBerkshire Hathaway Energy Holdings Company, 666 Grand Avenue, Suite 500, Des Moines, Iowa 50309-2580, telephone number (515) 242-4300. In order to ensure timely delivery of the information, any request should be made by                     , 2014.2015.

No dealer, salesperson or other individual has been authorized to give any information or to make any representations not contained in this prospectus in connection with the Exchange Offer. If given or made, such information or representations must not be relied upon as having been authorized by us. Neither the delivery of this prospectus nor any sale made hereunder shall, under any circumstances, create any implications that there has not been any change in the facts set forth in this prospectus or in our affairs since the date hereof.

Each broker-dealer that receives Exchange Notes for its own account pursuant to the Exchange Offer must acknowledgeacknowledges that it will deliver a prospectus in connection with any resale of such Exchange Notes. The letter of transmittal accompanying this prospectus states that by so acknowledging and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an “underwriter” within the meaning of the Securities Act. This prospectus, as it may be amended or supplemented from time to time, may be used by a broker-dealer in connection with resales of the Exchange Notes received in exchange for Initial Notes where such Initial Notes were acquired by such broker-dealer as a result of market-making activities or other trading activities. We have agreed that, for a period of 120 days after the expiration of the Exchange Offer, we will make this prospectus available to any broker-dealer for use in connection with any such resales. See “Plan of Distribution.”

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NOTICE TO NEW HAMPSHIRE RESIDENTS

NEITHER THE FACT THAT A REGISTRATION STATEMENT OR AN APPLICATION FOR A LICENSE HAS BEEN FILED UNDER CHAPTER 421-B OF THE NEW HAMPSHIRE REVISED STATUTES WITH THE STATE OF NEW HAMPSHIRE NOR THE FACT THAT A SECURITY IS EFFECTIVELY REGISTERED OR A PERSON IS LICENSED IN THE STATE OF NEW HAMPSHIRE CONSTITUTES A FINDING BY THE SECRETARY OF STATE OF THE STATE OF NEW HAMPSHIRE THAT ANY DOCUMENT FILED UNDER CHAPTER 421-B IS TRUE, COMPLETE AND NOT MISLEADING. NEITHER ANY SUCH FACT NOR THE FACT THAT AN EXEMPTION OR EXCEPTION IS AVAILABLE FOR A SECURITY OR A TRANSACTION MEANS THAT THE SECRETARY OF STATE HAS PASSED IN ANY WAY UPON THE MERITS OR QUALIFICATIONS OF, OR RECOMMENDED OR GIVEN APPROVAL TO, ANY PERSON, SECURITY OR TRANSACTION. IT IS UNLAWFUL TO MAKE, OR CAUSE TO BE MADE, TO ANY PROSPECTIVE PURCHASER, CUSTOMER OR CLIENT ANY REPRESENTATION INCONSISTENT WITH THE PROVISIONS OF THIS PARAGRAPH.

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RISK FACTORS

An investment in the Notes is subject to numerous risks, including, but not limited to, those described below. Careful consideration of these risks, together with all of the other information contained elsewhere in this prospectus and the documents incorporated by reference herein, should be made before making an investment decision. Additional risks and uncertainties not presently known or which we currently deem immaterial may also impair our business operations and our ability to service the Notes.

Our Corporate and Financial Structure Risks

We are a holding company and depend on distributions from subsidiaries, including joint ventures, to meet our obligations.

We are a holding company with no material assets other than the ownership interests in our subsidiaries and joint ventures, collectively referred to as our subsidiaries. Accordingly, cash flows and the ability to meet our obligations, including payment of principal, interest and any premium payments on the Notes, are largely dependent upon the earnings of our subsidiaries and the payment of such earnings to us in the form of dividends or other distributions. Our subsidiaries are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay amounts due pursuant to the Notes or our other obligations, or to make funds available, whether by dividends or other payments, for the payment of the Notes or our other obligations, and do not guarantee the payment of any of our obligations, including the Notes. Distributions from subsidiaries may also be limited by:

We are substantially leveraged, the terms of the Notes and our existing senior and junior subordinated debt do not (and the terms of any of our future subordinated debt are not expected to) restrict the incurrence of additional debt by us or our subsidiaries, and our senior debt, including the Notes, will be structurally subordinated to the debt of our subsidiaries, each of which could adversely affect our consolidated financial results and our ability to service the Notes.

A significant portion of our capital structure is comprised of debt, and we expect to incur additional debt in the future to fund items such as, among others, acquisitions, capital investments and the development and construction of new or expanded facilities at our subsidiaries. As of September 30, 2013,2014, we had the following outstanding obligations:

The above amounts above do not include the $2.0$1.5 billion of Initial Notes issued on November 8, 2013December 4, 2014, or our $2.594the $1.5 billion of junior subordinated debentures we recently issued on December 19, 2013.and sold to subsidiaries of Berkshire Hathaway to fund part of the AltaLink Acquisition.

Our consolidated subsidiaries also have significant amounts of outstanding debt, which totaled $18.171$23.9 billion as of September 30, 2013.2014. These amounts exclude (a) trade debt, (b) preferred stock obligations, (c) letters of credit in respect of subsidiary debt, and (d) our share of the outstanding debt of our own or our subsidiaries’ equity method investments. In addition, upon completionas part of the NV Energy Transaction on December 19, 2013,AltaLink Acquisition, we acquired subsidiaries that hadreported outstanding debt of $4.921C$4.1 billion as of September 30, 2013.2014.

Given our substantial leverage, we may not have sufficient cash to service our debt, including the Notes, which could limit our ability to finance future acquisitions, develop and construct additional projects, or operate successfully under difficult conditions, including those brought on by adverse national and global economies, unfavorable financial markets or growth conditions where our capital needs may exceed our ability to fund them. Our leverage could also impair our credit quality or the credit quality of our subsidiaries, making it more difficult to finance operations or issue future debt on favorable terms, and could result in a downgrade in debt ratings, including those of the Notes, by credit rating agencies.

The terms of the Notes and our other senior debt do not limit our ability or the ability of our subsidiaries to incur additional debt or issue preferred stock. Accordingly, we or our subsidiaries could enter into acquisitions, new financings, refinancings, recapitalizations, capital leases or other highly leveraged transactions that could significantly increase our or our subsidiaries’ total amount of outstanding debt. The interest payments needed to service this increased level of debt could adversely affect our consolidated financial results and our ability to service the Notes. Many of our subsidiaries’ debt agreements contain covenants, or may in the future contain covenants, that restrict or limit, among other things, such subsidiaries’ ability to create liens, sell assets, make certain distributions, incur additional debt or miss contractual deadlines or requirements, and our ability to comply with these covenants may be affected by events beyond our control. Further, if an event of default accelerates a repayment obligation and such acceleration results in an event of default under some or all of our other debt or the indenture for the Notes, we may not have sufficient funds to repay all of the accelerated debt and the Notes simultaneously, and the other risks described under “Our Corporate and Financial Structure Risks” may be magnified as well.

Because we are a holding company, the claims of our senior and, if any, our subordinated debt holders are structurally subordinated with respect to the assets and earnings of our subsidiaries. Therefore, your rights and the rights of our other creditors to participate in the assets of any subsidiary in the event of a liquidation or reorganization are subject to the prior claims of the subsidiary’s creditors and preferred shareholders, if any. In addition, pursuant to separate financing agreements, substantially all of PacifiCorp’s electric utility properties, and MidAmerican Energy Company’s electric utility properties in the state of Iowa, the equity interest of MidAmerican Funding, LLC’s subsidiary, substantially all of Nevada Power Company’s and Sierra Pacific Power Company’s properties in Nevada,and AltaLink’s transmission properties, the equity interest of MidAmerican Funding, LLC’s subsidiary, the long-term customer contracts of Kern River and substantially all of the assets of the subsidiaries of MidAmerican Renewables, LLC that are direct or indirect owners of generation projects, isare directly or indirectly pledged to secure their financings and, therefore, may be unavailable as potential sources of repayment of the Notes and our other senior debt.

A downgrade in our credit ratings or the credit ratings of our subsidiaries could negatively affect our or our subsidiaries’ access to capital, increase the cost of borrowing or raise energy transaction credit support requirements.

Our senior unsecured debt is rated by various rating agencies. We cannot assure that our senior unsecured debt rating will not be reduced in the future. Although none of our outstanding debt has rating-downgrade triggers that would accelerate a repayment obligation, a credit rating downgrade would increase our borrowing costs and commitment fees on our revolving credit agreements and other financing arrangements, perhaps significantly, and would cause our obligations under commitments to provide equity contributions in support of the construction of solar and wind projects by certain of our indirect subsidiaries to be supported by cash collateral or letters of credit. In addition, we would likely be required to pay a higher interest rate in future financings, and the potential pool of investors and funding sources would likely decrease. Further, access to the commercial paper market, our principal source of short-term borrowings, could be significantly limited, resulting in higher interest costs.

Similarly, any downgrade or other event negatively affecting the credit ratings of our subsidiaries could make their costs of borrowing higher or access to funding sources more limited, which in turn could cause us to provide liquidity in the form of capital contributions or loans to such subsidiaries, thus reducing our and our subsidiaries’ liquidity and borrowing capacity.

Most of our subsidiaries’ large wholesale customers, suppliers and counterparties require our subsidiaries to have sufficient creditworthiness in order to enter into transactions, particularly in the wholesale energy markets. If the credit ratings of our subsidiaries were to decline, especially below investment grade, financing costs and borrowings would likely increase because certain counterparties may require collateral in the form of cash, a letter of credit or some other form of security for existing transactions and as a condition to entering into future transactions with our subsidiaries. Such amounts may be material and may adversely affect our subsidiaries’ liquidity and cash flows.

Our majority shareholder, Berkshire Hathaway, could exercise control over us in a manner that would benefit Berkshire Hathaway to the detriment of our creditors.

Berkshire Hathaway is our majority owner and has control over all decisions requiring shareholder approval. In circumstances involving a conflict of interest between Berkshire Hathaway and our creditors, Berkshire Hathaway could exercise its control in a manner that would benefit Berkshire Hathaway to the detriment of our creditors.

Our Business Risks

Much of our growth has been achieved through acquisitions, and additional acquisitions, including the NV Energy Transaction,AltaLink Acquisition, and any such acquisitions may not be successful.

Much of our growth has been achieved through acquisitions. Future acquisitions may range from buying individual assets to the purchase of entire businesses. On December 19, 2013, we completed the NV Energy Transaction,acquisition and we completed the AltaLink Acquisition on December 1, 2014. We will continue to investigate and pursue opportunities for future acquisitions that we believe, but cannot assure you, may increase shareholder value and expand or complement existing businesses. We may participate in bidding or other negotiations at any time for such acquisition opportunities which may or may not be successful.

Completion of anyAny acquisition entails numerous risks, including, among others, the:others:

An acquisition could cause an interruption of, or a loss of momentum in, the activities of one or more of our businesses. In addition, the final orders of regulatory authorities approving acquisitions, including the order of the AUC approving the AltaLink Acquisition received on November 28, 2014, may be subject to appeal by third parties. The diversion of management’s attention and any delays or difficulties encountered in connection with the approval and integration of the acquired operations could adversely affect our combined businesses and financial results and could impair our ability to realize the anticipated benefits of the acquisition.

We cannot assure you that future acquisitions, if any, or any integration efforts, including those related to the NV Energy Transaction,AltaLink Acquisition, will be successful, or that our ability to repay our obligations, including the Notes, will not be adversely affected by any future acquisitions.

Our subsidiaries are subject to operating uncertainties and events beyond our control that impact the costs to operate, maintain, repair and replace utility and interstate natural gas pipeline systems, which could adversely affect our consolidated financial results and our ability to service the Notes.

The operation of complex utility systems or interstate natural gas pipeline and storage systems that are spread over large geographic areas involves many operating uncertainties and events beyond our control. These potential events include the breakdown or failure of our thermal, nuclear, hydroelectric and other electricity generating facilities and related equipment, compressors, pipelines, transmission and distribution lines or other equipment or processes, which could lead to catastrophic events; unscheduled outages; strikes, lockouts or other labor-related actions; shortages of qualified labor; transmission and distribution system constraints; failure to obtain, renew or maintain rights-of-way, easements and leases on tribal or First Nations land; terrorist activities or military or other actions, including cyberattacks; fuel shortages or interruptions; unavailability of critical equipment, materials and supplies; low water flows and other weather-related impacts; performance below expected levels of output, capacity or efficiency; operator error; third party excavation errors; unexpected degradation of our pipeline systems; design, construction or manufacturing defects; and catastrophic events such as severe storms, floods, fires, earthquakes, explosions, landslides, wars, terrorism, embargoes and mining accidents. A catastrophic event might result in injury or loss of life, extensive property damage or environmental or natural resource damages. For example, in the event of an uncontrolled release of water at one of our high hazard potential hydroelectric facilities, it is probable that loss of human life, disruption of lifeline facilities and property damage could occur in the downstream population and civil or other penalties could be imposed by the Federal Energy Regulatory Commission (“FERC”). Any of these events or other operational events could significantly reduce or eliminate our subsidiaries’ revenue or significantly increase their expenses, thereby reducing the availability of distributions to us. For example, if our subsidiaries cannot operate their electricity or natural gas facilities at full capacity due to damage caused by a catastrophic event, their revenue could decrease and their expenses could increase due to the need to obtain energy from more expensive sources. Further, we and our subsidiaries self-insure many risks, and current and future insurance coverage may not be sufficient to replace lost revenue or cover repair and replacement costs. The scope, cost and availability of our and our subsidiaries’ insurance coverage may change, including the portion that is self-insured. Any reduction of our subsidiaries’ revenue or increase in their expenses resulting from the risks described above, could adversely affect our consolidated financial results and our ability to service the Notes.

We and our businesses are subject to extensive federal, state, local and foreign legislation and regulation, including numerous environmental, health, safety, reliability and other laws and regulations that affect us and our businesses’ operations and costs. These laws and regulations are complex, dynamic and subject to new interpretations or change. In addition, new laws and regulations are continually being proposed and enacted that impose new or revised requirements or standards on us and our businesses.

We and our businesses are required to comply with numerous federal, state, local and foreign laws and regulations that have broad application to us and our subsidiaries and limit our ability to independently make and implement management decisions regarding, among other items, acquiring businesses; constructing, acquiring or disposing of operating assets; operating and maintaining generating facilities and transmission and distribution system assets; complying with pipeline safety and integrity and environmental requirements; setting rates charged to customers; establishing capital structures and issuing debt or equity securities; transacting between subsidiaries and affiliates; and paying dividends or similar distributions. These laws and regulations are followed in developing our safety and compliance programs and procedures and are implemented and enforced by federal, state and local regulatory agencies, such as, among others, the Occupational Safety and Health Administration, the Federal Energy Regulatory Commission (“FERC”),FERC, the Environmental Protection Agency, the Department of Transportation, the Nuclear Regulatory Commission (“NRC”), the Federal Mine Safety and Health Administration and various state regulatory

commissions and agencies in the United States, and foreign regulatory agencies, such as the Gas and Electricity Markets Authority (“GEMA”), which discharges certain of its powers through its staff within Ofgem, in Great Britain.Britain and the AUC in Canada.

Compliance with applicable laws and regulations generally requires our subsidiaries to obtain and comply with a wide variety of licenses, permits, inspections, audits and other approvals. Further, compliance with laws and regulations can require significant capital and operating expenditures, including expenditures for new equipment, inspection, cleanup costs, removal and remediation costs, damages arising out of contaminated properties and refunds, fines, penalties and injunctive measures affecting operating assets for failure to comply with environmental regulations. Compliance activities pursuant to existing or new laws and regulations could be prohibitively expensive or otherwise uneconomical. As a result, we could be required to shut down some facilities or materially alter their operations. Further, our subsidiaries may not be able to obtain or maintain all required environmental or other regulatory approvals and permits for their operating assets or development projects. Delays in, or active opposition by third parties to, obtaining any required environmental or regulatory authorizations or failure to comply with the terms and conditions of the authorizations may increase costs or prevent or delay our subsidiaries from operating their facilities, developing or favorably locating new facilities or expanding existing facilities. If our subsidiaries fail to comply with any environmental or other regulatory requirements, they may be subject to penalties and fines or other sanctions, including changes to the way our electricity generating facilities are operated that may adversely impact generation or how the Pipeline CompaniesPipelines are permitted to operate their systems that may adversely impact throughput. The costs of complying with laws and regulations could adversely affect our consolidated financial results and our ability to service the Notes. Not being able to operate existing facilities or develop new generating facilities to meet customer electricity needs could require our subsidiaries to increase their purchases of electricity on the wholesale market, which could increase market and price risks and adversely affect our consolidated financial results and our ability to service the Notes.

Existing laws and regulations, while comprehensive, are subject to changes and revisions from ongoing policy initiatives by legislators and regulators and to interpretations that may ultimately be resolved by the courts. For example, changes in laws and regulations could result in, but are not limited to, increased competition within our subsidiaries’ service territories; new environmental requirements, including the implementation of renewable portfolio standards and greenhouse gas emissionemissions reduction goals; the issuance of new or stricter air quality standards; the implementation of energy efficiency mandates; the issuance of regulations governing the management and disposal of coal combustion byproducts; changes in forecasting requirements; changes to our subsidiaries’ service territories as a result of condemnation or takeover by municipalities or other governmental entities, particularly where they lack the exclusive right to serve their customers; the inability of our subsidiaries’subsidiaries to recover their costs;costs on a timely basis, if at all; new pipeline safety requirements; or a negative impact on our subsidiaries’ current

transportation and cost recovery arrangements. In addition to changes in existing legislation and regulation, new laws and regulations are likely to be enacted from time to time that impose additional or new requirements or standards on our businesses.

Implementing actions required under, and otherwise complying with, new federal and state laws and regulations and changes in existing ones are among the most challenging aspects of managing utility operations. We cannot accurately predict the type or scope of future laws and regulations that may be enacted, changes in existing ones or new interpretations by agency orders or court decisions nor can we determine their impact on us at this time; however, any one of these could adversely affect our consolidated financial results and our ability to service the Notes through higher capital expenditures and operating costs or restrict or otherwise cause an adverse change in how we operate our businesses. To the extent that our regulated subsidiaries are not allowed by their regulators to recover or cannot otherwise recover the costs to comply with new laws and regulations or changes in existing ones, the costs of complying with such additional requirements could have a material adverse effect on our consolidated financial results and our ability to service the Notes. Additionally, even if such costs are recoverable in rates, if they are substantial and result in rates increasing to levels that substantially reduce customer demand, this could have a material adverse effect on our consolidated financial results and our ability to service the Notes.

Recovery of costs and certain activities by our regulated subsidiaries isare subject to regulatory review and approval, and the inability to recover costs or undertake certain activities may adversely affect our consolidated financial results.

State Rate Proceedings

PacifiCorp, MidAmerican Energy Company, Nevada Power Company and Sierra Pacific Power Company (collectively, the “Utilities”) establish rates for their regulated retail service through state regulatory proceedings. These proceedings typically involve multiple parties, including government bodies and officials, consumer advocacy groups and various consumers of energy, who have differing concerns but generally have the common objective of limiting rate increases while also requiring the Utilities to ensure system reliability. Decisions are subject to judicial appeal, potentially leading to further uncertainty associated with the approval proceedings.

Each state setsStates set retail rates based in part upon the state regulatory commission’s acceptance of an allocated share of total utility costs. When states adopt different methods to calculate interjurisdictional cost allocations, some costs may not be incorporated into rates of any state. Ratemaking is also generally done on the basis of estimates of normalized costs, so if a given year’s realized costs are higher than normalized costs, rates may not be sufficient to cover those costs. In some cases, actual costs are lower than the normalized or estimated costs recovered through rates and from time-to-time may result in a state regulator requiring refunds to customers. Each state regulatory commission generally sets rates based on a test year established in accordance with that commission’s policies. The test year data adopted by each state regulatory commission may create a lag between the incurrence of a cost and its recovery in rates. Each state regulatory commission also decides the allowed levels of expense, investment and investmentcapital structure that it deems are just and reasonable in providing the service and may disallow recovery in rates for any costs that it believes do not meet such standard. Additionally, each state regulatory commission establishes the allowed rate of return the Utilities will be given an opportunity to earn on their sources of capital. While rate regulation is premised on providing a fair opportunity to earn a reasonable rate of return on invested capital, the state regulatory commissions do not guarantee that we will be able to realize a reasonable rate of return.

In certain states where energy cost adjustment mechanisms are in place, energy cost increases above the level assumed in establishing base rates may be subject to customer sharing, and in other states, the Utilities are currently not permitted to pass through such energy cost increases without a general rate case.sharing. Any significant increase in fuel costs for electricity generation or purchased electricity costs could have a negative impact on the Utilities, despite efforts to minimize this impact through the use of hedging contracts and sharing mechanisms or through future general rate cases. Any of these consequences could adversely affect our consolidated financial results and our ability to service the Notes.

FERC Jurisdiction

The FERC authorizes cost-based rates associated with transmission services provided by the Utilities’ transmission facilities. Under the Federal Power Act, the Utilities may voluntarily file, or may be obligated to file, for changes, including general rate changes, to their system-wide transmission service rates. General rate changes implemented may be subject to refund. The FERC also has responsibility for approving both cost- and market-based rates under which the Utilities sell electricity at wholesale, has licensing authorityjurisdiction over most of PacifiCorp’s hydroelectric generating facilities and has broad jurisdiction over energy markets. The FERC may impose price limitations, bidding rules and other mechanisms to address some of the volatility of these markets or could revoke or restrict the ability of the Utilities to sell electricity at market-based rates, which could adversely affect our consolidated financial results and our ability to service the Notes. The FERC also maintains rules concerning standards of conduct, affiliate restrictions, interlocking directorates and cross-subsidization. As a transmission owning member of the Midcontinent Independent System Operator, Inc. (“MISO”), MidAmerican Energy Company is also subject to MISO-directed modifications of market rules, which are subject to FERC approval and operational procedures. In addition, in November 2014, PacifiCorp and the California Independent System Operator Corporation (“CAISO”) implemented a new energy imbalance market (“EIM”) to optimize and automate five-minute dispatch of generation to serve load across the PacifiCorp and CAISO footprint.

PacifiCorp’s EIM implementation through its open access transmission tariff and the associated market rules are subject to FERC approval and oversight. The FERC may also impose substantial civil penalties for any non-compliance with the Federal Power Act and the FERC’s rules and orders.

The North American Electric Reliability Corporation (“NERC”) has standards in place to ensure the reliability of the electric transmission grid and generation system. The Utilities are subject to the NERC’s regulations and periodic audits to ensure compliance with those regulations. The NERC may carry out enforcement actions for non-compliance and administer significant financial penalties, subject to the FERC’s review.

The FERC has jurisdiction over, among other things, the construction, abandonment, modification and operation of natural gas pipelines and related facilities used in the transportation, storage and sale of natural gas in interstate commerce, including all rates, charges and terms and conditions of service. The FERC also has market transparency authority and has adopted additional reporting and internet posting requirements for natural gas pipelines and buyers and sellers of natural gas.

Rates for our interstate natural gas transmission and storage operations at the Pipeline Companies,Pipelines, which include reservation, commodity, surcharges, fuel and gas lost and unaccounted for charges, are authorized by the FERC. In accordance with the FERC’s rate-making principles, the Pipeline Companies’Pipelines’ current maximum tariff rates are designed to recover prudently incurred costs included in their pipeline system’s regulatory cost of service that are associated with the construction, operation and maintenance of their pipeline system and to afford our Pipeline CompaniesPipelines an opportunity to earn a reasonable rate of return. Nevertheless, the rates the FERC authorizes our Pipeline CompaniesPipelines to charge their customers may not be sufficient to recover the costs incurred to provide services in any given period. Moreover, from time to time, the FERC may change, alter or refine its policies or methodologies for establishing pipeline rates and terms and conditions of service. In addition, the FERC has the authority under Section 5 of the Natural Gas Act of 1938 (“NGA”) to investigate whether a pipeline may be earning more than its allowed rate of return and, when appropriate, to institute proceedings against such pipeline to reduce rates. It is not possible to determine at this time whether anyAny such actions would beproceedings, if instituted, with respect to our Pipeline Companies’ rates or what the outcome would be, but such proceedings could result in significantly adverse rate decreases.

Under FERC policy, interstate pipelines and their customers may execute contracts at negotiated rates, which may be above or below the maximum tariff rate for that service or the pipeline may agree to provide a discounted rate, which would be a rate between the maximum and minimum tariff rates. In a rate proceeding, rates in these contracts are generally not subject to adjustment. It is possible that the cost to perform services under negotiated or discounted rate contracts will exceed the cost used in the determination of the negotiated or discounted rates, which could result either in losses or lower rates of return for providing such services. FERC policy allows interstate natural gas pipelines to design new maximum tariff rates to recover such costs under certain circumstances in rate cases. However, with respect to discounts granted to affiliates, the interstate natural gas pipeline must demonstrate that the discounted rate was necessary in order to meet competition.

GEMA Jurisdiction

Northern Powergrid (Northeast) Limited and Northern Powergrid (Yorkshire) plc (collectively, the “Northern Powergrid Distribution Companies”), as Distribution Network Operators (“DNOs”) and holders of electricity distribution licenses, are subject to regulation by GEMA. Most of the revenue of a DNO is controlled by a distribution price control formula set out in the electricity distribution license. The price control formula does not directly constrain profits from year to year, but is a control on revenue that operates independently of most of the DNO’s actual costs. A resetting of the formula does not require the consent of the DNO, but if a licensee disagrees with a change to its license it can appeal the matter to the United Kingdom’s Competition Commission.and Markets Authority. GEMA is able to impose financial penalties on DNOs that contravene any of their electricity distribution license duties or certain of their duties under British law, or fail to achieve satisfactory performance of individual standards prescribed by GEMA. Any penalty imposed must be reasonable and may not exceed 10% of the DNO’s revenue. During the term of any price control, additional costs have a direct impact on the financial results of the Northern Powergrid Distribution Companies.

Our subsidiaries are subject to operating uncertainties, including costs to maintain, repair and replace utility and interstate natural gas pipeline systems and occurrences of catastrophic events, which could adversely affect our consolidated financial results and our ability to service the Notes.AUC Jurisdiction

The AUC is an independent, quasi-judicial agency established by the province of Alberta, Canada, which is responsible for, among other things, approving the tariffs of transmission facility owners, including AltaLink, and distribution utilities, acquisitions of such transmission facility owners or utilities, and construction and operation of complex utility systems or interstate natural gas pipeline systems that are spread over large geographic areas involves many operating uncertaintiesnew transmission projects in Alberta. The AUC also investigates and events beyond our control. These potential events, some of which could be catastrophic, includerules on regulated rate disputes and system access problems.

The AUC has various core functions in regulating the breakdown, blowout or failure ofAlberta electricity generating equipmenttransmission sector, including the following:

In addition, AUC approval is required in connection with new energy from more expensive sources. Further, we and our subsidiaries self-insure many risks,regulated utility initiatives in Alberta, amendments to existing approvals and financing proposals by designated utilities.

The AESO determines the need and plans for the expansion and enhancement of a congestion free transmission system in Alberta in accordance with applicable law and reliability standards. The AESO’s responsibilities include long-term transmission planning and management, including assessing and planning for the current and future insurance coveragetransmission system capacity needs of AESO market participants. When AESO determines an expansion or enhancement of the transmission system is needed, with limited exceptions, it submits an application to the AUC for approval of the proposed expansion or enhancement. The AESO then determines which transmission provider should submit an application to the AUC for a permit and license to construct and operate the designated transmission facilities. Generally the transmission provider operating in the geographic area where the transmission facilities expansion or enhancement is to be located is selected by the AESO to build, own and operate the transmission facilities. In addition, Alberta law provides that transmission projects may not be sufficientsubject to replace lost revenuea competitive process open to qualifying bidders. In either case, there can be no assurance that any jurisdictional market participant that we may own, including AltaLink, will be selected by the AESO to build, own and operate transmission facilities, even if our market participant operates in the relevant geographic area, or cover repair and replacement costs. The scope, cost and availability ofthat our and our subsidiaries’ insurance coveragemarket participant will be successful in any such competitive process in which it may change, including the portion that is self-insured. Any reduction of our subsidiaries’ revenue or increase in their expenses resulting from the risks described above, could adversely affect our consolidated financial results and our ability to service the Notes.participate.

Through our subsidiaries, we are actively pursuing, developing and constructing new or expanded facilities, the completion and expected costs of which are subject to significant risk, and our subsidiaries have significant funding needs related to their planned capital expenditures.

Through our subsidiaries, we actively pursue, develop and construct new or expanded facilities. We expect that these subsidiaries will incur substantial annual capital expenditures over the next several years. Such expenditures include and may include in the future, among others, construction and other costs for new electricity

generating facilities, electric transmission or distribution projects, environmental control and compliance systems, natural gas storage facilities, new or expanded pipeline systems, and continued maintenance and upgrades of existing assets.

Development and construction of major facilities are subject to substantial risks, including fluctuations in the price and availability of commodities, manufactured goods, equipment, labor, siting and permitting and

changes in environmental and operational compliance matters, load forecasts and other items over a multi-year construction period, as well as counterparty risk and the economic viability of our suppliers, customers and contractors. Certain of our construction projects are substantially dependent upon a single supplier or contractor and replacement of such supplier or contractor may be difficult and cannot be assured. These risks may result in the inability to timely complete a project or higher than expected costs to complete an asset and place it in service and, in extreme cases, the loss of the power purchase agreements or other long-term off-take contracts underlying such projects. Such costs may not be recoverable in the regulated rates or market or contract prices our subsidiaries are able to charge their customers. Delays in construction of renewable projects may result in delayed in-service dates which may result in the loss of anticipated revenue or income tax benefits. It is also possible that additional generation needs may be obtained through power purchase agreements, which could increase long-term purchase obligations and force reliance on the operating performance of a third party. The inability to successfully and timely complete a project, avoid unexpected costs or recover any such costs could adversely affect our consolidated financial results and our ability to service the Notes.

Furthermore, our subsidiaries depend upon both internal and external sources of liquidity to provide working capital and to fund capital requirements. In some cases, like our solar projects, we have committed to provide significant amounts of equity to our subsidiaries that are engaged in construction projects. If we do not provide needed funding to our subsidiaries and the subsidiaries are unable to obtain funding from external sources, they may need to postpone or cancel planned capital expenditures.expenditures, and in the case of our subsidiaries’ solar and wind projects for which we have provided equity commitment agreements, could result in a default by us.

Failure to construct these planned projects could limit opportunities for growth, increase operating costs and adversely affect the reliability of electricity service to our customers. For example, if PacifiCorp is not able to expand its existing portfolio of generating facilities, it may be required to enter into long-term wholesale electricity purchase contracts or purchase wholesale electricity at more volatile and potentially higher prices in the spot markets to serve retail loads.

A significant sustained decrease in demand for electricity or natural gas in the markets served by our subsidiaries would decrease our operating revenue, could impact our planned capital expenditures and could adversely affect our consolidated financial results and our ability to service the Notes.

A significant sustained decrease in demand for electricity or natural gas in the markets served by our subsidiaries would significantly reduce our operating revenue, could impact our planned capital expenditures and could adversely affect our consolidated financial results and our ability to service the Notes. Factors that could lead to a decrease in market demand include, among others:

Our operating results may fluctuate on a seasonal and quarterly basis and may be adversely affected by weather.

In most parts of the United States and other markets in which our subsidiaries operate, demand for electricity peaks during the hot summer months when irrigation and cooling needs are higher. Market prices for electricity also generally peak at that time. In other areas, demand for electricity peaks during the winter. In addition, demand for natural gas and other fuels generally peaks during the winter when heating needs are higher. This is especially true in Northern Natural Gas’ traditional end-use and distribution market area and MidAmerican Energy Company’s and Sierra Pacific Power Company’s retail natural gas businesses. Further, extreme weather conditions, such as heat waves, winter storms or floods could cause these seasonal fluctuations to be more pronounced. Periods of low rainfall or snowpack may negatively impact electricity generation at PacifiCorp’s hydroelectric generating facilities, which may result in greater purchases of electricity from the wholesale market or from other sources at market prices. Additionally, PacifiCorp and MidAmerican Energy Company have added substantial wind-powered generating capacity, and our unregulated businesses are adding solar and wind-powered generating capacity, each of which is also a climate-dependent resource.

As a result, the overall financial results of our subsidiaries may fluctuate substantially on a seasonal and quarterly basis. We have historically provided less service, and consequently earned less income, when weather conditions are mild. Unusually mild weather in the future may adversely affect our consolidated financial results and our ability to service the Notes through lower revenue or margins. Conversely, unusually extreme weather conditions could increase our costs to provide services and could adversely affect our consolidated financial results and our ability to service the Notes. The extent of fluctuation in our consolidated financial results may change depending on a number of factors related to our subsidiaries’ regulatory environment and contractual agreements, including their ability to recover energy costs, the existence of revenue sharing provisions and terms of the wholesale sale contracts.

Our subsidiaries are subject to market risk associated with the wholesale energy markets, which could adversely affect our consolidated financial results and our ability to service the Notes.

In general, our primary market risk is adverse fluctuations in the market price of wholesale electricity and fuel, including natural gas, coal and fuel oil, which is compounded by volumetric changes affecting the availability of or demand for electricity and fuel. The market price of wholesale electricity may be influenced by several factors, such as the adequacy or type of generating capacity, scheduled and unscheduled outages of generating facilities, prices and availability of fuel sources for generation, disruptions or constraints to transmission and distribution facilities, weather conditions, demand for electricity, economic growth and changes in technology. Volumetric changes are caused by fluctuations in generation or changes in customer needs that can be due to the weather, electricity and fuel prices, the economy, regulations or customer behavior. For example, the Utilities purchase electricity and fuel in the open market as part of their normal operating

businesses. If market prices rise, especially in a time when larger than expected volumes must be purchased at market prices, the Utilities may incur significantly greater expense than anticipated. Likewise, if electricity market prices decline in a period when the Utilities are a net seller of electricity in the wholesale market, the Utilities could earn less revenue. Although the Utilities have energy cost adjustment mechanisms in certain states, the risks associated with changes in market prices aremay not be fully mitigated.

Certain of our subsidiaries are subject to the risk that customers will not renew their contracts or that our subsidiaries will be unable to obtain new customers for expanded capacity, each of which could adversely affect our consolidated financial results and our ability to service the Notes.

Substantially all of the Pipeline Companies’ revenues are generated under transportation and storage contracts that periodically must be renegotiated and extended or replaced, and the Pipeline Companies are dependent upon relatively few customers for a substantial portion of their revenue. If our subsidiaries are unable to renew, remarket, or find replacements for their customer agreements on favorable terms, our sales volumes and operating revenue would be exposed to reduction and increased volatility. For example, without the benefit of long-term transportation agreements, we cannot assure that the Pipeline Companies will be able to transport natural gas at efficient capacity levels. Similarly, without long-term power purchase agreements, we cannot assure that our unregulated power generators will be able to operate profitably. Failure to maintain existing long-term agreements or secure new long-term agreements, or being required to discount rates significantly upon renewal or replacement, could adversely affect our consolidated financial results and our ability to service the Notes. The replacement of any existing long-term agreements depends on market conditions and other factors that may be beyond our subsidiaries’ control.

Potential terrorist activities and the impact of military or other actions, including cyberattacks, could adversely affect our consolidated financial results and our ability to service the Notes.

The ongoing threat of terrorism and the impact of military or other actions by nations or politically, ethnically or religiously motivated organizations regionally or globally may create increased political, economic, social and financial market instability, which could subject our subsidiaries’ operations to increased risks. Additionally, the United States government has issued warnings that energy assets, specifically pipeline, nuclear generation, transmission and other electric utility infrastructure, are potential targets for terrorist organizations.attacks, including cyberattacks. Cyberattacks could adversely affect our subsidiaries’ ability to operate their facilities, information technology and business systems, or compromise confidential customer and employee information. Political, economic, social or financial market instability or damage to or interference with the operating assets of our subsidiaries, customers or suppliers may result in business interruptions, lost revenue, higher commodity prices, disruption in fuel supplies, lower energy consumption and unstable markets, particularly with respect to electricity and natural gas, and increased security, repair or other costs, any of which may materially adversely affect us and our subsidiaries in ways that cannot be predicted at this time. Any of these risks could materially affect our consolidated financial results and our ability to service the Notes. Furthermore, instability in the financial markets as a result of terrorism, sustained or significant cyberattacks, or war could also materially adversely affect our and our subsidiaries’ ability to raise capital.

MidAmerican Energy Company is subject to the unique risks associated with nuclear generation.

The ownership and operation of nuclear power plants, such as MidAmerican Energy Company’s 25% ownership interest in Quad Cities Station, involves certain risks. These risks include, among other items, mechanical or structural problems, inadequacy or lapses in maintenance protocols, the impairment of reactor operation and safety systems due to human error, the costs of storage, handling and disposal of nuclear materials, compliance with and changes in regulation of nuclear power plants, limitations on the amounts and types of insurance coverage commercially available, and uncertainties with respect to the technological and financial aspects of decommissioning nuclear facilities at the end of their useful lives. The prolonged unavailability of Quad Cities Station could have a materially adverse effect on MidAmerican Energy Company’s financial results and our ability to service the Notes, particularly when the cost to produce power at the plant is significantly less than market wholesale prices. The following are among the more significant of these risks:

purchased electricity costs to meet supply commitments. Rather than incurring substantial costs to restart the plant, the plant could be shut down. Furthermore, a shut-down or failure at any other nuclear power plant could cause regulators to require a shut-down or reduced availability at Quad Cities Station. In addition, issues relating to the disposal of nuclear waste material, including the availability, unavailability and expense of a permanent repository for spent nuclear fuel, could adversely impact operations as well as the cost and ability to decommission nuclear power plants, including Quad Cities Station, in the future.

In addition, issues relating to the disposal of nuclear waste material, including the availability, unavailability and expense of a permanent repository for spent nuclear fuel, could adversely impact operations as well as the cost and ability to decommission nuclear plants, including Quad Cities Station, in the future.

Certain of our subsidiaries are subject to the risk that customers will not renew their contracts or that our subsidiaries will be unable to obtain new customers for expanded capacity, each of which could adversely affect our consolidated financial results and our ability to service the Notes.

Substantially all of the Pipelines’ revenues are generated under transportation and storage contracts that periodically must be renegotiated and extended or replaced, and the Pipelines are dependent upon relatively few customers for a substantial portion of their revenue. If our subsidiaries are unable to renew, remarket, or find replacements for their customer agreements on favorable terms, our sales volumes and operating revenue would be exposed to reduction and increased volatility. For example, without the benefit of long-term transportation agreements, we cannot assure that the Pipelines will be able to transport natural gas at efficient capacity levels. Similarly, without long-term power purchase agreements, we cannot assure that our unregulated power generators will be able to operate profitably. Failure to maintain existing long-term agreements or secure new long-term agreements, or being required to discount rates significantly upon renewal or replacement, could adversely affect our consolidated financial results and our ability to service the Notes. The replacement of any existing long-term agreements depends on market conditions and other factors that may be beyond our subsidiaries’ control.

Our subsidiaries are subject to counterparty credit risk, which could adversely affect our consolidated financial results and our ability to service the Notes.

Our subsidiaries are subject to counterparty credit risk related to contractual payment obligations with wholesale suppliers, customers and, as is the case for MidAmerican Energy Company, other participants in organized Regional Transmission Organization (“RTO”) markets. Adverse economic conditions or other events affecting counterparties with whom our subsidiaries conduct business could impair the ability of these counterparties to meet their payment obligations. Our subsidiaries depend on these counterparties to remit payments on a timely basis. We continue to monitor the creditworthiness of our wholesale suppliers and customers in an attempt to reduce the impact of any potential counterparty default. If strategies used to minimize these risk exposures are ineffective or if any of our subsidiaries’ wholesale suppliers’ or customers’ financial condition deteriorates or they otherwise become unable to pay, it could have a significant adverse impact on our liquidity, our consolidated financial results and our ability to service the Notes.

Transactional activities of MidAmerican Energy Company and other participants in organized RTO markets are governed by credit policies specified in each respective RTO’s governing tariff and related business practices. Credit policies of RTOs, which have been developed through extensive stakeholder participation, generally seek to minimize potential loss in the event of a market participant default without unnecessarily inhibiting access to the marketplace. In the event of a default by an RTO market participant on its market-related obligations, losses are typically allocated among all other market participants in proportion to each participant’s share of overall market activity during the period of time the loss was incurred. Because of this, MidAmerican Energy Company has potential indirect exposure with respect to the creditworthiness of every other market participant in the RTO markets where it actively participates, including the MISO, the PJM, Interconnection, L.L.C., and the Electric Reliability Council of Texas.

Our subsidiaries are subject to counterparty performance risk, which could adversely affect our consolidated financial results.results and our ability to service the Notes.

Our subsidiaries are subject to counterparty performance risk related to performance of contractual obligations by wholesale suppliers, customers, contractors and, as is the case for MidAmerican Energy Company,

other participants in organized RTO markets. Each subsidiary relies on wholesale suppliers to deliver

commodities, primarily natural gas, coal and electricity, in accordance with short- and long-term contracts. Failure or delay by suppliers to provide these commodities pursuant to existing contracts could disrupt the delivery of electricity and require the Utilities to incur additional expenses to meet customer needs. In addition, when these contracts terminate, the Utilities may be unable to purchase the commodities on terms equivalent to the terms of current contracts.

Our subsidiaries rely on wholesale customers to take delivery of the energy they have committed to purchase. Failure of customers to take delivery may require these subsidiaries to find other customers to take the energy at lower prices than the original customers committed to pay. If our subsidiaries’ wholesale customers are unable to fulfill their obligations, there may be a significant adverse impact on our consolidated financial results and our ability to service the Notes.

Generally, a single customer purchases the energy from our independent power projects in the United States and the Philippines pursuant to long-term power purchase agreements. Without performance by the counterparties under these agreements, we cannot assure that our unregulated power generators will be able to operate profitably.

Inflation and changes in commodity prices and fuel transportation costs may adversely affect our consolidated financial results and our ability to service the Notes.

Inflation and increases in commodity prices and fuel transportation costs may affect our businesses by increasing both operating and capital costs. As a result of existing rate agreements, contractual arrangements or competitive price pressures, our subsidiaries may not be able to pass the costs of inflation on to their customers. If our subsidiaries are unable to manage cost increases or pass them on to their customers, our consolidated financial results and our ability to service the Notes could be adversely affected.

Disruptions in the financial markets could affect our and our subsidiaries’ ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on us and our subsidiaries, including our ability to service the Notes.

Disruptions in the financial markets could affect our and our subsidiaries’ ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on us and our subsidiaries, including our ability to service the Notes. Significant dislocations and liquidity disruptions in the United States, Great Britain and global credit markets, such as those that occurred in 2008 and 2009, may materially impact liquidity in the bank and debt capital markets, making financing terms less attractive for borrowers that are able to find financing and, in other cases, may cause certain types of debt financing, or any financing, to be unavailable. Additionally, economic uncertainty in the United States or globally may adversely affect the United States’ credit markets and could negatively impact our and our subsidiaries’ ability to access funds on favorable terms or at all. If we or our subsidiaries are unable to access the bank and debt markets to meet liquidity and capital expenditure needs, it may adversely affect the timing and amount of our capital expenditures, acquisition financing and our consolidated financial results and our ability to service the Notes.

Poor performance of plan and fund investments and other factors impacting the pension and other postretirement benefit plans and nuclear decommissioning and mine reclamation trust funds could unfavorably impact our cash flows and liquidity.

Costs of providing our defined benefit pension and other postretirement benefit plans depend upon a number of factors, including the rates of return on plan assets, the level and nature of benefits provided, discount rates, mortality assumptions, the interest rates used to measure required minimum funding levels, changes in benefit design, tax deductibility and funding limits, changes in laws and government regulation and our required or voluntary contributions made to the plans. Certain of our pension and other postretirement benefit plans are in underfunded positions. Even if sustained growth in the investments over future periods increases the value of these plans’ assets, we will likely be required to make significant cash

contributions to fund these plans in the future. Additionally, our plans have investments in domestic and foreign equity and debt securities and other investments that are subject to loss. Losses from investments could add to the volatility, size and timing of future contributions. Furthermore, the Pension Protection Act of 2006, as amended, may result in more volatility in the amount and timing of future contributions.

In addition, MidAmerican Energy Company is required to fund over time the projected costs of decommissioning Quad Cities Station, a nuclear power plant. Funds MidAmerican Energy Company has invested in a nuclear decommissioning trust are invested in debt and equity securities and poor performance of these investments will reduce the amount of funds available for their intended purpose, which could require MidAmerican Energy Company to make additional cash contributions. Such cash funding obligations, which are also impacted by the other factors described above, could have a material impact on MidAmerican Energy Company’s liquidity by reducing its available cash thereby adversely affecting our ability to service the Notes.

We own investments and projects located in foreign countries that are exposed to increased economic, regulatory and political risks.

We own and may acquire significant energy-related investments and projects outside of the United States.States, including our recent acquisition of AltaLink. In addition to any disruption in the global financial markets, the economic, regulatory and political conditions in some of the countries where we have operations or are pursuing investment opportunities may present increased risks related to, among others, inflation, foreign currency exchange rate fluctuations, currency repatriation restrictions, nationalization, renegotiation, privatization, availability of financing on suitable terms, customer creditworthiness, construction delays, business interruption, political instability, civil unrest, guerilla activity, terrorism, expropriation, trade sanctions, contract nullification and changes in law, regulations or tax policy. We may not be capable of either fully insuring against or effectively hedging these risks.

We are exposed to risks related to fluctuations in foreign currency exchange rates.

Our business operations and investments outside the United States increase our risk related to fluctuations in foreign currency exchange rates, primarily the British pound.pound and the Canadian dollar. Our principal reporting currency is the United States dollar, and the value of the assets and liabilities, earnings, cash flows and potential distributions from our foreign operations changes with the fluctuations of the currency in which they transact. We may selectively reduce some foreign currency exchange rate risk by, among other things, requiring contracted amounts be settled in, or indexed to, United States dollars or a currency freely convertible into United States dollars, or hedging through foreign currency derivatives. These efforts, however, may not be effective and could negatively affect our consolidated financial results. We may not be able to obtain sufficient dollars or other hard currency or available dollars may not be allocated to pay such obligations, which could adversely affect our consolidated financial results.

Cyclical fluctuations in the residential real estate brokerage and mortgage businesses could adversely affect HomeServices.

The residential real estate brokerage and mortgage industries tend to experience cycles of greater and lesser activity and profitability and are typically affected by changes in economic conditions, which are beyond HomeServices’ control. Any of the following, among others, are examples of items that could have a material adverse effect on HomeServices’ businesses by causing a general decline in the number of home sales, sale prices or the number of home financings which, in turn, would adversely affect its financial results:

Disruptions in the financial markets could affect our and our subsidiaries’ ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on us and our subsidiaries, including our ability to service the Notes.

Disruptions in the financial markets could affect our and our subsidiaries’ ability to obtain debt financing or to draw upon or renew existing credit facilities and have other adverse effects on us and our subsidiaries, including our ability to service the Notes. Significant dislocations and liquidity disruptions in the United States,

Great Britain, Canada and global credit markets, such as those that occurred in 2008 and 2009, may materially impact liquidity in the bank and debt capital markets, making financing terms less attractive for borrowers that are able to find financing and, in other cases, may cause certain types of debt financing, or any financing, to be unavailable. Additionally, economic uncertainty in the United States or globally may adversely affect the United States’ credit markets and could negatively impact our and our subsidiaries’ ability to access funds on favorable terms or at all. If we or our subsidiaries are unable to access the bank and debt markets to meet liquidity and capital expenditure needs, it may adversely affect the timing and amount of our capital expenditures, acquisition financing and our consolidated financial results and our ability to service the Notes.

We and our subsidiaries are involved in a variety of legal proceedings, the outcomes of which are uncertain and could adversely affect our consolidated financial results.results and our ability to service the Notes.

We and our subsidiaries are, and in the future may become, a party to a variety of legal proceedings. Litigation is subject to many uncertainties, and we cannot predict the outcome of individual matters with certainty. It is possible that the final resolution of some of the matters in which we and our subsidiaries are involved could result in additional material payments substantially in excess of established reserves or in terms that could require us or our subsidiaries to change business practices and procedures or divest ownership of assets. Further, litigation could result in the imposition of financial penalties or injunctions and adverse regulatory consequences, any of which could limit our ability to take certain desired actions or the denial of needed permits, licenses or regulatory authority to conduct our business, including the siting or permitting of facilities. Any of these outcomes could have a material adverse effect on our consolidated financial results.results and our ability to service the Notes.

Potential changes in accounting standards may impact our consolidated financial results and disclosures in the future, which may change the way analysts measure our business or financial performance.

The Financial Accounting Standards Board (“FASB”) and the SEC continuously make changes to accounting standards and disclosure and other financial reporting requirements. New or revised accounting standards and requirements issued by the FASB or the SEC or new accounting orders issued by the FERC could significantly impact our consolidated financial results and disclosures.

Other Risks Associated with the Notes

Your ability to transfer the Notes is limited by the absence of a market for the Notes, and a trading market for the Notes may not develop.

There is no existing public trading market for the Notes and a market for the Notes might not develop and you may not be able to sell the Notes or obtain a suitable price. If such a market were to develop, the Notes could trade at prices that may be higher or lower than their initial offering price depending on many factors, including prevailing interest rates, our operating results and the market for similar securities. We do not intend to apply for listing of the Notes on a securities exchange or an automated dealer quotation system. As a result, it may be difficult for you to find a buyer for the Notes at the time you want to sell them and, even if you find a buyer, you might not get the price you want.

You may not be able to sell your Initial Notes if you do not exchange them for registered Exchange Notes in the Exchange Offer.

If you do not exchange your Initial Notes for registered Exchange Notes in the Exchange Offer, your Initial Notes will continue to be subject to the restrictions on transfer as stated in the legends on the Initial Notes. In general, you may not offer, sell or otherwise transfer the Initial Notes in the U.S. unless they are:

We do not currently anticipate that we will register any untendered Initial Notes under the Securities Act. Except for limited instances involving the initial purchasers or holders of Initial Notes who are not eligible to participate in the Exchange Offer or who do not receive freely transferable Exchange Notes in the Exchange Offer, following completion of the Exchange Offer, we will not be under any further obligation to register the Initial Notes under the Securities Act under the registration rights agreement or otherwise. Also, if the Exchange Offer is completed on the terms and within the time period contemplated by this prospectus, no additional interest attributable to a failure to timely comply with our obligations under the registration rights agreement will be payable on your Initial Notes.

Your ability to sell your Initial Notes may be significantly more limited and the price at which you may be able to sell your Initial Notes may be significantly lower if you do not exchange them for registered Exchange Notes in the Exchange Offer.

To the extent that Initial Notes are exchanged for registered Exchange Notes in the Exchange Offer, the trading market for the Initial Notes that remain outstanding may be significantly more limited. As a result, the liquidity of the Initial Notes not tendered for exchange could be adversely affected. The extent of the market for Initial Notes will depend upon a number of factors, including the number of holders and dollar amount of Initial Notes remaining outstanding and the interest of securities firms in maintaining a market in the Initial Notes. An issue of securities with a lesser outstanding market value available for trading, which is called the “float,” may command a lower price than would be comparable to an issue of securities with a greater float. As a result, the market price for Initial Notes that are not exchanged in the Exchange Offer may be affected adversely to the extent that Initial Notes exchanged in the Exchange Offer reduce the float.float or the number of holders. The reduced float and number of holders also may make the trading price of the Initial Notes that are not exchanged more volatile.

There are state securities law restrictions on the resale of the Exchange Notes.

In order to comply with the securities laws of certain jurisdictions, the Exchange Notes (like the Initial Notes) may not be offered or resold by any holder unless they have been registered or qualified for sale in such jurisdictions or an exemption from registration or qualification is available and the requirements of such exemption have been satisfied. We do not currently intend to register or qualify the resale of the Exchange Notes in any such jurisdictions. However, an exemption is generally available for sales to registered broker-dealers and certain institutional buyers. Other exemptions under applicable state securities laws may also be available.

We will not accept your Initial Notes for exchange if you fail to follow the Exchange Offer procedures and, as a result, your Initial Notes will continue to be subject to existing transfer restrictions and you may not be able to sell your Initial Notes.

We will issue Exchange Notes in exchange for Initial Notes tendered and accepted for exchange pursuant to the Exchange Offer only after compliance by you with all of the conditions of the Exchange Offer described elsewhere in this prospectus under the caption, “The Exchange Offer—How to Tender,” including timely (i) receipt by the exchange agent of (a) a properly completed and duly executed letter of transmittal, together with any required signature guarantees and any other required documents and (b) the certificate(s) representing the Initial Notes being tendered; (ii) compliance with the procedures for book-entry transfers described elsewhere in this prospectus; or (iii) compliance with the guaranteed delivery procedures set forth elsewhere in this prospectus. We are under no duty to give notification of defects or irregularities with respect to the tenders of Initial Notes for exchange. If there are defects or irregularities with respect to your tender of Initial Notes, we will not accept your Initial Notes for exchange. See “The Exchange Offer.”

DISCLOSURE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus contains statements that do not directly or exclusively relate to historical facts. These statements are “forward-looking statements” within the meaning of Section 27A of the Securities Act and Section 21E of the U.S. Securities Exchange Act of 1934, as amended (the “Exchange Act”). Forward-looking statements can typically be identified by the use of forward-looking words, such as will,“will,” “may,” “could,” “project,” “believe,” “anticipate,” “expect,” “estimate,” “continue,” “intend,” “potential,” “plan,” “forecast” and similar terms. These statements are based upon our current intentions, assumptions, expectations and beliefs and are subject to risks, uncertainties and other important factors. Many of these factors are outside our control and could cause actual results to differ materially from those expressed or implied by such forward-looking statements. These factors include, among others:

Further details of the potential risks and uncertainties affecting us are described in the “Risk Factors” section of this prospectus and in the documents incorporated by reference into this prospectus. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. The foregoing factors should not be construed as exclusive.

USE OF PROCEEDS

We will not receive any proceeds from the issuance of the Exchange Notes in the Exchange Offer. The Exchange Notes will evidence the same debt as the Initial Notes tendered in exchange for Exchange Notes. Accordingly, the issuance of the Exchange Notes will not result in any change in our outstanding indebtedness.

THE EXCHANGE OFFER

Purpose of the Exchange Offer

On November 8, 2013,December 4, 2014, we privately placed the Initial Notes in a transaction exempt from registration under the Securities Act. Accordingly, the Initial Notes may not be reoffered, resold or otherwise transferred in the United States unless so registered or unless an exemption from the Securities Act registration requirements is available. Pursuant to a registration rights agreement with the initial purchasers of the Initial Notes, we agreed, for the benefit of holders of the Initial Notes, to:

We will be entitled to consummate the Exchange Offer on the expiration date (as defined below) provided that we have accepted all Initial Notes previously validly tendered in accordance with the terms set forth in this prospectus and the applicable letter of transmittal.

In addition, under certain circumstances described below, we may be required to file a shelf registration statement to cover resales of certain of the notes.Notes.

If we do not comply with certain of our obligations under the registration rights agreement, we must pay additional interest on the Initial Notes in addition to the interest that is otherwise due on the notes.Notes. The purpose of the Exchange Offer is to fulfill our obligations with respect to the registration rights agreement.

If you are a broker-dealer that receives Exchange Notes for its own account in exchange for Initial Notes, where you acquired such Initial Notes as a result of market-making activities or other trading activities, you must acknowledge that you will deliver a prospectus in connection with any resale of such Exchange Notes. See “Plan of Distribution.”

Terms of the Exchange

Upon the terms and subject to the conditions contained in this prospectus and in the letters of transmittal that accompany this prospectus, we are offering to exchange (i) $1,000 in principal amount of the 2020 Exchange Notes for each $1,000 in principal amount of the 2020 Initial Notes, (ii) $1,000 in principal amount of the 2025 Exchange Notes for each $1,000 in principal amount of the 2025 Initial Notes and (iii) $1,000 in principal amount of the 2045 Exchange Notes for each $1,000 in principal amount of the 2045 Initial Notes. The terms of the Exchange Notes are identical in all material respects to the terms of the corresponding series of Initial Notes except that the Exchange Notes will generally be freely transferable. The Exchange Notes will evidence the same debt as the Initial Notes and will be entitled to the benefits of the indenture. Any Initial Notes that remain outstanding after the consummation of the Exchange Offer, together with all Exchange Notes issued in connection with the Exchange Offer, will be treated as a single class of securities under the indenture. See “Description of the Notes.”

The Exchange Offer is not conditioned on any minimum aggregate principal amount of Initial Notes being tendered for exchange.

Based on existing interpretations of the Securities Act by the staff of the SEC set forth in several no-action letters to third parties, and subject to the immediately following sentence, we believe that you may offer for

resale, resell and otherwise transfer the Exchange Notes without further compliance with the registration and prospectus delivery provisions of the Securities Act. However, if you are an “affiliate” (within the meaning of the Securities Act) of ours or you intend to participate in the Exchange Offer for the purpose of distributing the Exchange Notes or you are a broker-dealer (within the meaning of the Securities Act) that acquired notes in a transaction other than as part of its market-making or other trading activities and who has arranged or has an understanding with any person to participate in the distribution of the Exchange Notes, you:

Subject to exceptions for certain holders, to participate in the Exchange Offer you will be required to represent to us at the time of the consummation of the Exchange Offer, among other things, that: (i) you are not an affiliate of ours; (ii) any Exchange Notes to be received by you will be acquired in the ordinary course of your business; and (iii) at the time of commencement of the Exchange Offer, you have no arrangement or understanding with any person to participate in a distribution (within the meaning of the Securities Act) of the notes. In addition, in connection with any resales of Exchange Notes, any broker-dealer who acquired Exchange Notes for its own account as a result of market-making activities or other trading activities must deliver a prospectus meeting the requirements of the Securities Act. The SEC has taken the position that such a broker-dealer may fulfill its prospectus delivery requirements with respect to the Exchange Notes (other than a resale of an unsold allotment from the initial sale of the Initial Notes) with this prospectus. Under the registration rights agreement, we are required to allow a broker-dealer and other persons with similar prospectus delivery requirements, if any, to use this prospectus in connection with the resale of such Exchange Notes for a period of time not less than 120 days following the consummation of the Exchange Offer. If you are a broker-dealer that receives Exchange Notes for its own account in exchange for Initial Notes, where you acquired such Initial Notes as a result of market-making activities or other trading activities, you must acknowledge that you will deliver a prospectus in connection with any resale of such Exchange Notes. See “Plan of Distribution.”

You will not be required by us to pay brokerage commissions or fees or, subject to the instructions in the applicable letter of transmittal, transfer taxes relating to your exchange of Initial Notes for Exchange Notes in the Exchange Offer.

Shelf Registration Statement

If:

to participate in the Exchange Offer and any such holder so requests for any reason other than the failure by such holder to make a timely and valid tender in accordance with the terms of Exchange Offer; or

we will:

The foregoing obligations are subject to our right to postpone or suspend the filing or effectiveness of any shelf registration statement (or exchange offer registration statement) if such action is required by law or taken by us in good faith and for valid business reasons in accordance with the terms of the registration rights agreement.

You will not be entitled, except if you were an initial purchaser of the Initial Notes, to have your notesNotes registered under any shelf registration statement (if one is filed), unless you agree in writing to be bound by the applicable provisions of the registration rights agreement. In order to sell your notesNotes under the shelf registration statement, you generally must be named as a selling security holder in the related prospectus and must deliver a prospectus to purchasers. Consequently, you will be subject to the civil liability provisions under the Securities Act in connection with those sales and indemnification obligations under the registration rights agreement.

Additional Interest

A registration default will be deemed to have occurred:

registration rights agreement because (i) any event occurs as a result of which the related prospectus forming part of such registration statement would include any untrue statement of a material fact or omit to state any material fact necessary to make the statements therein in the light of the circumstances under which they were made not misleading, (ii) it shall be necessary to amend such

registration statement or supplement the related prospectus to comply with the Securities Act or the Exchange Act, or the respective rules thereunder or (iii) of a Suspension (as defined in the registration rights agreement) by us in accordance with provisions and procedures provided in the registration rights agreement.

Additional interest will accrue on the Initial Notes subject to such registration default, for so long as they constitute Transfer Restricted Securities, at a rate of 0.50% per annum from and including the date on which any such registration default occurs to but excluding the date on which all such registration defaults have ceased to be continuing. In no event will such additional interest be payable for periods after November 8, 2015.December 4, 2016. At our written request, the Representative, as such term is defined in the registration rights agreement, may, in its sole discretion, agree to shorten such penalty interest period. In each case, such additional interest is payable in addition to any other interest payable from time to time with respect to the Initial Notes and the Exchange Notes. The Exchange Notes will not contain any additional provisions regarding the payment of additional interest.

Expiration Date; Extensions; Termination; Amendments

The Exchange Offer expires on the expiration date. The expiration date is 5:00 p.m., New York City time, on                     , 2014,2015, unless we in our sole discretion extend the period during which the Exchange Offer is open, in which event the expiration date is the latest time and date on which the Exchange Offer, as so extended by us, expires. We reserve the right to extend the Exchange Offer at any time and from time to time by giving written notice to The Bank of New York Mellon Trust Company, N.A., as the exchange agent, before 9:00 a.m., New York City time, on the first business day following the previously scheduled expiration date and by timely public announcement communicated in accordance with applicable law or regulation. During any extension of the Exchange Offer, all Initial Notes previously tendered pursuant to the Exchange Offer and not validly withdrawn will remain subject to the Exchange Offer.

The exchange date will occur promptly after the expiration date. We expressly reserve the right to (i) terminate the Exchange Offer and not accept for exchange any Initial Notes for any reason, including if any of the events set forth below under “—Conditions to the Exchange Offer” shall have occurred and shall not have been waived by us and (ii) amend the terms of the Exchange Offer in any manner,accordance with applicable law or regulation, whether before or after any tender of the Initial Notes. If any such termination or amendment occurs, we will notify the exchange agent in writing and will either issue a press release or give written notice to the holders of the Initial Notes as promptly as practicable. Unless we terminate the Exchange Offer prior to 5:00 p.m., New York City time, on the expiration date, we will exchange the Initial Notes for the Exchange Notes on the exchange date.

If we waive any material condition to the Exchange Offer, or amend the Exchange Offer in any other material respect, and if at the time that notice of such waiver or amendment is first published, sent or given to holders of Initial Notes in the manner specified above, the Exchange Offer is scheduled to expire at any time earlier than the expiration of a period ending on the fifth business day from, and including, the date that such notice is first so published, sent or given, then the Exchange Offer will be extended until the expiration of such period of five business days.

This prospectus and the related letters of transmittal and other relevant materials will be mailed by us to record holders of Initial Notes and will be furnished to brokers, banks and similar persons whose names, or the names of whose nominees, appear on the lists of holders for subsequent transmittal to beneficial owners of Initial Notes.

How to Tender

The tender to us of Initial Notes by you pursuant to one of the procedures set forth below will constitute an agreement between you and us in accordance with the terms and subject to the conditions set forth herein and in the applicable letter of transmittal.

General Procedures.Procedures. To validly tender the Initial Notes pursuant to the Exchange Offer, either:

The term “agent’s message” means a message, transmitted by the DTC and received by the exchange agent and forming part of a Book-Entry Confirmation, which states that DTC has received an express acknowledgment from a participant tendering Initial Notes that are the subject of the Book-Entry Confirmation that the participant has received and agrees to be bound by the terms of the letter of transmittal, and that we may enforce that agreement against the participant.

If tendered Initial Notes are registered in the name of the signer of the letter of transmittal and the Exchange Notes to be issued in exchange therefor are to be issued (and any untendered Initial Notes are to be reissued) in the name of the registered holder, the signature of such signer need not be guaranteed. In any other case, the tendered Initial Notes must be endorsed or accompanied by written instruments of transfer in form satisfactory to us and duly executed by the registered holder and the signature on the endorsement or instrument of transfer must be guaranteed by a firm, which we refer to as an Eligible Institution, that is a member of a recognized signature guarantee medallion program within the meaning of Rule 17Ad-15 under the Exchange Act. If the Exchange Notes and/or Initial Notes not exchanged are to be delivered to an address other than that of the registered holder appearing on the note register for the Initial Notes, the signature on the letter of transmittal must be guaranteed by an Eligible Institution.

Any beneficial owner whose Initial Notes are registered in the name of a broker, dealer, commercial bank, trust company or other nominee and who wishes to tender Initial Notes should contact such holder promptly and instruct such holder to tender Initial Notes on such beneficial owner’s behalf. If such beneficial owner wishes to tender such Initial Notes himself, such beneficial owner must, prior to completing and executing the letter of transmittal and delivering such Initial Notes, either make appropriate arrangements to register ownership of the Initial Notes in such beneficial owner’s name or follow the procedures described in the immediately preceding paragraph. The transfer of record ownership may take considerable time.

Book-Entry Transfer.Transfer. The exchange agent will make a request to establish an account with respect to the Initial Notes at DTC for purposes of the Exchange Offer within two business days after the date of this prospectus. Any financial institution that is a participant in DTC’s systems may utilize DTC’s ATOP procedures

to tender Initial Notes and may make book-entry delivery of Initial Notes by causing DTC to transfer such Initial Notes into the exchange agent’s account at DTC in accordance with DTC’s ATOP procedures for transfer. However, although delivery of Initial Notes may be effected through book-entry transfer at DTC, the letter of transmittal, with any required signature guarantees and any other required documents, must, in any case, be transmitted to and received by the exchange agent at its address or facsimile number set forth on the back cover of this prospectus on or prior to the expiration date, unless the holder either (i) complies with the guaranteed delivery procedures described below or (ii) sends an agent’s message through ATOP.

If delivery is made through ATOP, the exchange for the Initial Notes so tendered will be made only after a Book-Entry Confirmation and an agent’s message and any other documents required by the letter of transmittal have been received by the exchange agent, in each case on or prior to the expiration date.

The method of delivery of Initial Notes and all other documents is at your election and risk. If sent by mail, we recommend that you use registered mail, return receipt requested, obtain proper insurance, and complete the mailing sufficiently in advance of the expiration date to permit delivery to the exchange agent on or before the expiration date. Delivery of documents to DTC does not constitute delivery to the exchange agent.

Guaranteed Delivery Procedures.Procedures. If a holder desires to accept the Exchange Offer and time will not permit a letter of transmittal or Initial Notes to reach the exchange agent on or before the expiration date, or the procedures for book-entry transfer set forth above cannot be completed on a timely basis, a tender may nevertheless be effected, provided that all of the following guaranteed delivery procedures are complied with:

Unless all of the guaranteed delivery procedures set forth in the preceding paragraph are complied with, we may, at our option, reject the tender. Copies of a Notice of Guaranteed Delivery which may be used by Eligible Institutions for the purposes described in this paragraph are being delivered with this prospectus and the related letter of transmittal. A tender will be deemed to have been received as of the date when the tendering holder’s properly completed and duly signed letter of transmittal accompanied by the Initial Notes (or agent’s message

accompanied by a Book-Entry Confirmation in the case of a book-entry transfer) is received by the exchange agent. Issuances of Exchange Notes in exchange for Initial Notes tendered pursuant to a notice of guaranteed delivery by an Eligible Institution or an electronic message transmitted through ATOP with respect to guaranteed delivery for book-entry transfers will be made only against deposit of the letter of transmittal (and any other required documents) and the tendered Initial Notes or, in the case of a book-entry transfer, against deposit of an agent’s message through ATOP (and any other required documents) and a timely Book-Entry Confirmation.

All questions as to the validity, form, eligibility (including time of receipt) and acceptance for exchange of any tender of Initial Notes will be determined by us and our determination will be final and binding. We reserve the absolute right to reject any or all tenders not in proper form or the acceptances for exchange of which may, in the opinion of our counsel, be unlawful. We also reserve the absolute right to waive any of the conditions of the Exchange Offer or any defect or irregularities in tenders of any particular holder whether or not similar defects or irregularities are waived in the case of other holders. None of us, the exchange agent or any other person will be under any duty to give notification of any defects or irregularities in tenders or shall incur any liability for failure to give any such notification. Our interpretation of the terms and conditions of the Exchange Offer (including the letters of transmittal and the instructions thereto) will be final and binding.

Terms and Conditions of the Letters of Transmittal

The letters of transmittal contain, among other things, the following terms and conditions, which are part of the Exchange Offer.

The party tendering Initial Notes for exchange, whom we refer to as the Transferor, exchanges, assigns and transfers the Initial Notes to us and irrevocably constitutes and appoints the exchange agent as the Transferor’s agent and attorney-in-fact to cause the Initial Notes to be assigned, transferred and exchanged. The Transferor represents and warrants that it has full power and authority to tender, exchange, assign and transfer the Initial Notes and to acquire Exchange Notes issuable upon the exchange of such tendered Initial Notes, and that, when the same are accepted for exchange, we will acquire good and unencumbered title to the tendered Initial Notes, free and clear of all liens, restrictions, charges and encumbrances and not subject to any adverse claim. The Transferor also warrants that it will, upon request, execute and deliver any additional documents deemed by us to be necessary or desirable to complete the exchange, assignment and transfer of tendered Initial Notes. The Transferor further agrees that acceptance of any tendered Initial Notes by us and the issuance of Exchange Notes in exchange therefor shall constitute performance in full by us of our obligations under the registration rights agreement and that we shall have no further obligations or liabilities thereunder (except in certain limited circumstances). All authority conferred by the Transferor will survive the death or incapacity of the Transferor and every obligation of the Transferor shall be binding upon the heirs, legal representatives, successors, assigns, executors and administrators of such Transferor.

See “—Terms of the Exchange.”

Withdrawal Rights

Initial notes tendered pursuant to the Exchange Offer may be withdrawn at any time prior to the expiration date. For a withdrawal to be effective, a written or facsimile transmission notice of withdrawal must be timely received by the exchange agent at its address set forth on the back cover of this prospectus. Any such notice of withdrawal must specify the person named in the letter of transmittal as having tendered Initial Notes to be withdrawn, the certificate numbers of Initial Notes to be withdrawn, the principal amount of Initial Notes to be withdrawn (which must be an authorized denomination), a statement that such holder is withdrawing his election to have such Initial Notes exchanged, and the name of the registered holder of such Initial Notes, and must be signed by the holder in the same manner as the original signature on the letter of transmittal (including any required signature guarantees) or be accompanied by documents of transfer sufficient to have the trustee register the transfer of such Initial Notes into the name of the person withdrawing the tender. The exchange agent will return the properly withdrawn Initial Notes promptly following receipt of notice of withdrawal. If Initial Notes

have been tendered pursuant to the procedures for book-entry transfer set forth above, any notice of withdrawal must specify the name and number of the account at DTC to be credited with the withdrawn Initial Notes or otherwise comply with DTC’s procedures, and in such case the Initial Notes will be credited to such account by the exchange agent promptly after withdrawal. All questions as to the validity of notices of withdrawals, including time of receipt, will be determined by us, and our determination will be final and binding on all parties.

Acceptance of Initial Notes for Exchange; Delivery of Exchange Notes

Upon the terms and subject to the conditions of the Exchange Offer, the acceptance for exchange of Initial Notes validly tendered and not withdrawn and the issuance of the Exchange Notes will be made on the exchange date. For the purposes of the Exchange Offer, we shall be deemed to have accepted for exchange validly tendered Initial Notes when, as and if we have given written notice thereof to the exchange agent.

In all cases, delivery of Exchange Notes in exchange for Initial Notes tendered and accepted pursuant to this Exchange Offer will be made only after timely receipt by the exchange agent of:

The exchange agent will act as agent for the tendering holders of Initial Notes for the purposes of receiving Exchange Notes from us and causing the Initial Notes to be assigned, transferred and exchanged. Upon the terms and subject to the conditions of the Exchange Offer, delivery of Exchange Notes to be issued in exchange for accepted Initial Notes will be made by the exchange agent promptly after acceptancethe expiration of the tendered Initial Notes.Exchange Offer. Initial notes not accepted for exchange by us will be returned without expense to the tendering holders (or in the case of Initial Notes tendered by book-entry transfer into the exchange agent’s account at DTC pursuant to the procedures described above, such non-exchanged Initial Notes will be credited to an account maintained with DTC) promptly following the expiration date or, if we terminate the Exchange Offer prior to the expiration date, promptly after the Exchange Offer is so terminated.

Conditions to the Exchange Offer

We are not required to accept for exchange, or to issue Exchange Notes in exchange for, any outstanding Initial Notes. We may terminate or extend the Exchange Offer by oral or written notice to the exchange agent and by timely public announcement communicated in accordance with applicable law or regulation for any reason, if any of the following shall have occurred:

The foregoing conditions are for our sole benefit and may be asserted by us with respect to all or any portion of the Exchange Offer regardless of the circumstances (including any action or inaction by us) giving rise to such condition or may be waived by us in whole or in part at any time or from time to time in our sole discretion. The failure by us at any time to exercise any of the foregoing rights will not be deemed a waiver of any such right, and each right will be deemed an ongoing right which may be asserted at any time or from time to time. In addition, we have reserved the right, notwithstanding the satisfaction of each of the foregoing conditions, to terminate or amend the terms of the Exchange Offer.Offer in accordance with applicable law or regulation.

Any determination by us concerning the fulfillment or non-fulfillment of any conditions will be final and binding upon all parties.

Exchange Agent

The Bank of New York Mellon Trust Company, N.A. has been appointed as the exchange agent for the Exchange Offer. Letters of transmittal must be addressed to the exchange agent at its address set forth on the back cover page of this prospectus. Delivery to an address other than as set forth herein, or transmissions of instructions via a facsimile or telex number other than the ones set forth herein, will not constitute a valid delivery. The Bank of New York Mellon Trust Company, N.A. is the trustee under the indenture. The Bank of New York Mellon Trust Company, N.A. (or one of its affiliates) currently serves, and may in the future serve, as trustee under indentures evidencing other indebtedness of us and our affiliates. The Bank of New York Mellon Trust Company, N.A., is an affiliate of one of the initial purchasers of the Initial Notes. The Bank of New York Mellon Trust Company, N.A. (or one of its affiliates) is also, and may in the future be, a lender under credit facilities for us and our affiliates.

Solicitation of Tenders; Expenses

We have not retained any dealer-manager or similar agent in connection with the Exchange Offer and will not make any payments to brokers, dealers or others for soliciting acceptances of the Exchange Offer. We will, however, pay the exchange agent reasonable and customary fees for its services and will reimburse it for reasonable out-of-pocket expenses in connection therewith. We will also pay brokerage houses and other custodians, nominees and fiduciaries the reasonable out-of-pocket expenses incurred by them in forwarding tenders for their customers. The expenses to be incurred in connection with the Exchange Offer, including the fees and expenses of the exchange agent and printing, accounting and legal fees, will be paid by us and are estimated at approximately $300,000.

No dealer, salesperson or other individual has been authorized to give any information or to make any representations not contained in this prospectus in connection with the Exchange Offer. If given or made, such information or representations must not be relied upon as having been authorized by us. Neither the delivery of this prospectus nor any exchange made hereunder shall, under any circumstances, create any implication that there has been no change in our affairs since the respective dates as of which information is given herein.

The Exchange Offer is not being made to (nor will tenders be accepted from or on behalf of) holders of Initial Notes in any jurisdiction in which the making of the Exchange Offer or the acceptance thereof would not be in compliance with the laws of such jurisdiction. However, we may, at our discretion, take such action as we may deem necessary to make the Exchange Offer in any such jurisdiction and extend the Exchange Offer to

holders of Initial Notes in such jurisdiction. In any jurisdiction the securities laws or blue sky laws of which require the Exchange Offer to be made by a licensed broker or dealer, the Exchange Offer is being made on behalf of us by one or more registered brokers or dealers which are licensed under the laws of such jurisdiction.

Appraisal Rights

You will not have appraisal rights in connection with the Exchange Offer.

U.S. Federal Income Tax Consequences

The exchange of Initial Notes for Exchange Notes will not be a taxable exchange for U.S. federal income tax purposes, and holders will not recognizerealize any taxable gain or loss as a result of such exchange. See “Certain“Material U.S. Federal Income Tax Considerations.”

Other

Participation in the Exchange Offer is voluntary and you should carefully consider whether to accept. You are urged to consult your financial and tax advisors in making your own decisions on what action to take.

As a result of the making of, and upon acceptance for exchange of all validly tendered Initial Notes pursuant to the terms of, this Exchange Offer, we will have fulfilled a covenant contained in the terms of the Initial Notes and the registration rights agreement. Holders of the Initial Notes who do not tender their Initial Notes in the Exchange Offer will continue to hold such Initial Notes and will be entitled to all the rights, and limitations applicable thereto, under the indenture, except for any such rights under the registration rights agreement which by their terms terminate or cease to have further effect as a result of the making of this Exchange Offer. See “Description of the Notes.” All untendered Initial Notes will continue to be subject to the restriction on transfer set forth in the indenture. To the extent that Initial Notes are tendered and accepted in the Exchange Offer, the trading market, if any, for the Initial Notes could be adversely affected. See “Risk Factors—Your ability to sell your Initial Notes may be significantly more limited and the price at which you may be able to sell your Initial Notes may be significantly lower if you do not exchange them for registered Exchange Notes in the Exchange Offer.”

We may in the future seek to acquire untendered Initial Notes in open market or privately negotiated transactions, through subsequent exchange offers or otherwise. We have no present plan to acquire any Initial Notes whichthat are not tendered in the Exchange Offer.

SELECTED HISTORICAL FINANCIAL AND OPERATING DATA

The following table sets forth our selected consolidated historical financial and operating data, which should be read in conjunction with our historical consolidated financial statements and notes thereto incorporated by reference in this prospectus. The selected consolidated historical financial and operating data as of September 30, 2013,2014, and for the nine-month periods ended September 30, 20132014 and 2012,2013, have been derived from our historical unaudited interim consolidated financial statements and notes thereto incorporated by reference in this prospectus. In the opinion of management, these historical unaudited interim consolidated financial statements include all adjustments necessary for a fair presentation. The selected consolidated historical financial and operating data as of December 31, 20122013 and 2011,2012, and for each of the three years in the period ended December 31, 2012,2013, have been derived from our historical audited consolidated financial statements and notes thereto incorporated by reference in this prospectus. The selected consolidated historical financial and operating data as of December 31, 2011, 2010 2009 and 2008,2009, and for the years ended December 31, 20092010 and 2008,2009, have been derived from our historical audited consolidated financial statements and notes thereto not included or incorporated by reference in this prospectus.

DESCRIPTION OF THE NOTES

The Initial Notes were, and the Exchange Notes will be, issued pursuant to a supplemental indenture to the indenture, dated as of October 4, 2002, as amended to date, between us and The Bank of New York Mellon Trust Company, N.A., as trustee. The term “indenture” when used in this prospectus will refer to the indenture as amended by all supplemental indentures executed and delivered on or prior to the date on which the Notes are issued and sold. The terms of the Notes include those stated in the indenture and those made part of the indenture by reference to the U.S. Trust Indenture Act of 1939, as amended.

On October 4, 2002, we issued $200,000,000 of our 4.625% Senior Notes due 2007 (hereafter referred to as the series A notes) and $500,000,000 of our 5.875% Senior Notes due 2012 (hereafter referred to as the series B notes), on May 16, 2003, we issued $450,000,000 of our 3.50% Senior Notes due 2008 (hereafter referred to as the series C notes), on February 12, 2004, we issued $250,000,000 of our 5.00% Senior Notes due 2014 (hereafter referred to as the series D notes), on March 24, 2006, we issued $1,700,000,000 of our 6.125% Senior Bonds due 2036 (hereafter referred to as the series E bonds), on May 11, 2007, we issued $550,000,000 of our 5.95% Senior Bonds due 2037 (hereafter referred to as the series F bonds), on August 28, 2007, we issued $1,000,000,000 of our 6.50% Senior Bonds due 2037 (hereafter referred to as the series G bonds), on March 28, 2008, we issued $650,000,000 of our 5.75% Senior Notes due 2018 (hereafter referred to as the series H notes), and on July 7, 2009,November 8, 2013, we issued $250,000,000$400,000,000 of our 3.15%1.10% Senior Notes due 20122017 (hereafter referred to as the series IJ notes), $350,000,000 of our 2.00% Senior Notes due 2018 (hereafter referred to as the series K notes), $500,000,000 of our 3.75% Senior Notes due 2023 (hereafter referred to as the series L notes) and $750,000,000 of our 5.15% Senior Notes due 2043 (hereafter referred to as the series M notes), in each case pursuant to the indenture. The series A notes, the series B notes, the series C notes and the series I notes have been repaid in full. Unless otherwise indicated, references hereafter to the “securities” in this prospectus include the series D notes, the series E bonds, the series F bonds, the series G bonds, the series H notes, the series J notes, the series K notes, the series L notes, the series M notes and the Notes (and any other series of notes or other securities hereafter issued and outstanding under a supplemental indenture or otherwise pursuant to the indenture), except that any references to “securities” in this prospectus related to a determination of whether a “Change of Control” has occurred (and the related definitions) refer only to the series of securities issued under the indenture other than the series D notes. The principal difference between the Change of Control provisions for the series D notes and the comparable provisions for other series of securities issued under the indenture relates to the definition of the applicable “Rating Decline.”

. The following description is a summary of the material provisions of the indenture and the related registration rights agreement. It does not restate those agreements in their entirety. We urge you to read the indenture and the registration rights agreement because they, and not this description, define your rights as a holder of the Notes. The definitions of certain capitalized terms used in the following summary are set forth below under “—Definitions.”

General

The indenture does not limit the aggregate principal amount of the debt securities that may be issued thereunder and provides that debt securities may be issued from time to time in one or more series.

The 2017 Initial Notes were initially offered in the aggregate principal amount of $400,000,000, the 20182020 Initial Notes were initially offered in the aggregate principal amount of $350,000,000, the 20232025 Initial Notes were initially offered in the aggregate principal amount of $500,000,000$400,000,000 and the 20432045 Initial Notes were initially offered in the aggregate principal amount of $750,000,000. We may, without the consent of the holders, increase such principal amount in the future on the same terms and conditions (except for the issue date and offering price and, if applicable, the initial interest payment date and the initial interest accrual date) and with the same CUSIP number(s) as the Notes.

The 20172020 Initial Notes bear, and the 20172020 Exchange Notes will bear, interest at the rate of 1.100%2.40% per annum and will mature on May 15, 2017.February 1, 2020. The 20182025 Initial Notes bear, and the 20182025 Exchange Notes will bear, interest at the rate of 2.000%3.50% per annum and will mature on November 15, 2018.February 1, 2025. The 20232045 Initial Notes bear, and the 20232045 Exchange Notes will bear, interest at the rate of 3.750%4.50% per annum and will mature on November 15,

2023. The 2043 Initial Notes bear, and the 2043 Exchange Notes will bear, interest at the rate of 5.150% per annum and will mature on November 15, 2043.February 1, 2045. Interest on each series of Notes will be payable semi-annually in arrears on each May 15February 1 and November 15,August 1, commencing May 15, 2014,August 1, 2015, to the holders thereof at the close of business on the preceding May 1January 15 and November 1,July 15, respectively (whether or not a business day). Interest on each series of the Notes will be computed on the basis of a 360-day year of twelve 30-day months.

Each series of Initial Notes were, and each series of Exchange Notes will be, issued without coupons and in fully registered form only in denominations of $2,000 and any integral multiple of $1,000 in excess thereof.

We file certain reports and other information with the SEC in accordance with the requirements of Sections 13 and 15(d) under the Exchange Act. See “Where You Can Find More Information.” At any time that

Sections 13 and 15(d) cease to apply to us, we have covenanted in the indenture to file comparable reports and information with the trustee and the SEC, and mail such reports and information to holders of securities at their registered addresses, for so long as any securities remain outstanding.

If (i) a registration statement of which this prospectus is a part is not declared effective by the SEC within 365 days after theDecember 4, 2014 (the closing date of the offering of the Initial Notes,Notes), (ii) a shelf registration statement with respect to the resale of the Notes which is required under the registration rights agreement is not declared effective by the SEC within 150 days after our obligation to file such shelf registration statement arises (but in any event not prior to 365 days after the closing date of the offering of the Initial Notes)December 4, 2014 or (iii) any of the foregoing registration statements (or the prospectuses related thereto) after being declared effective by the SEC cease to be so effective or usable (subject to certain exceptions) in connection with certain resales of the Initial Notes or Exchange Notes for the periods specified and in accordance with the registration rights agreement, the interest rate on the Notes that are then subject to such cessation or other registration default will increase by 0.50% from and including the date on which any such event occurs until such event ceases to be continuing. The Exchange Offer and the registration rights are more fully described under “The Exchange Offer.”Offer” above.

Any Initial Notes that remain outstanding after the consummation of the Exchange Offer, together with all Exchange Notes issued in connection with the Exchange Offer, will be treated as a single class of securities under the indenture.

Optional Redemption

The 20172020 Initial Notes are, and the 20172020 Exchange Notes will be, redeemable, in whole or in part, at our option, at any time or from time to time prior to May 15, 2017,January 1, 2020 (the “2020 Notes Par Call Date”), at a redemption price equal to the sum of (a) the greater of (i) 100% of the principal amount of the 20172020 Initial Notes and 20172020 Exchange Notes being redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon fromthat would be due if such Notes matured on the redemption date to the maturity date2020 Notes Par Call Date (not including any portion of such payments of interest accrued to the redemption date), computed by discounting such payments, in each case to, but not including, the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 1015 basis points (the “2017“2020 Make-Whole Amount”), plus (b) accrued interest on the principal amount thereof to, but not including, the redemption date.

The 2018 Initial Notes are, and the 2018 Exchange Notes will be, redeemable, in whole or in part, at our option, at any time or from time to time prior to October 15, 2018, at a redemption price equal to the sum of (a) the greater of (i) 100% of the principal amount of the 2018 Initial Notes and 2018 Exchange Notes being redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon from the redemption date to the maturity date (not including any portion of such payments of interest accrued to the redemption date), computed by discounting such payments, in each case to, but not including, the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 10 basis points (the “2018 Make-Whole Amount”), plus (b) accrued interest on the principal amount thereof to, but not including, the redemption date.

On and after October 15, 2018,the 2020 Notes Par Call Date, we may redeem all or any part of the 20182020 Initial Notes and the 20182020 Exchange Notes, at our option, at any time or from time to time, at a redemption price equal to 100% of the principal amount of the 20182020 Initial Notes and the 20182020 Exchange Notes to be redeemed, plus any accrued and unpaid interest thereon to, but not including, the redemption date.

The 20232025 Initial Notes are, and the 20232025 Exchange Notes will be, redeemable, in whole or in part, at our option, at any time or from time to time prior to August 15, 2023,November 1, 2024 (the “2025 Notes Par Call Date”), at a redemption price equal to the sum of (a) the greater of (i) 100% of the principal amount of the 20232025 Initial Notes and 20232025 Exchange Notes being redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon fromthat would be due if such Notes matured on the redemption date to the maturity date2025 Notes Par Call Date (not including any portion of such payments of interest accrued to the redemption date), computed by discounting such payments, in each case to, but not including, the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 20 basis points (the “2023“2025 Make-Whole Amount”), plus (b) accrued interest on the principal amount thereof to, but not including, the redemption date.

On and after August 15, 2023,the 2025 Notes Par Call Date, we may redeem all or any part of the 20232025 Initial Notes and the 20232025 Exchange Notes, at our option, at any time or from time to time, at a redemption price equal to 100% of the principal amount of the 20232025 Initial Notes and 20232025 Exchange Notes to be redeemed, plus any accrued and unpaid interest thereon to, but not including, the redemption date.

The 20432045 Initial Notes are, and the 20432045 Exchange Notes will be, redeemable, in whole or in part, at our option, at any time or from time to time prior to May 15, 2043,August 1, 2044 (the “2045 Notes Par Call Date”), at a redemption price equal to the sum of (a) the greater of (i) 100% of the principal amount of the 20432045 Initial Notes and 20432045 Exchange Notes being redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon fromthat would be due if such Notes matured on the redemption date to the maturity date2045 Notes Par Call Date (not including any portion of such payments of interest accrued to the redemption date), computed by discounting such payments, in each case to, but not including, the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 25 basis points (the “2043“2045 Make-Whole Amount”), plus (b) accrued interest on the principal amount thereof to, but not including, the redemption date.

On and after May 15, 2043,the 2045 Notes Par Call Date, we may redeem all or any part of the 20432045 Initial Notes and the 20432045 Exchange Notes, at our option, at any time or from time to time, at a redemption price equal to 100% of the principal amount of the 20432045 Initial Notes and 20432045 Exchange Notes to be redeemed, plus any accrued and unpaid interest thereon to, but not including, the redemption date.

For purposes of determining the 20172020 Make-Whole Amount, the 2018 Make-Whole Amount, the 20232025 Make-Whole Amount and the 20432045 Make-Whole Amount, the following definitions apply:

“Comparable Treasury Issue” means, with respect to a series of Notes, the United States Treasury security selected by an Independent Investment Banker as having a maturity comparable to the remaining term of the Notes of such series (assuming, for this purpose, that such Notes matured on their par call date) to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such Notes.

“Comparable Treasury Price” means, with respect to any redemption date, the Reference Treasury Dealer Quotation for such redemption date.

“Independent Investment Banker” means an investment banking institution of international standing appointed by us.

“Reference Treasury Dealer” means a primary U.S. government securities dealer in New York City appointed by us.

“Reference Treasury Dealer Quotation” means, with respect to the Reference Treasury Dealer and any redemption date, the average, as determined by us, of the bid and asked prices for the applicable Comparable Treasury Issue (expressed in each case as a percentage of its principal amount and quoted in writing to us by such Reference Treasury Dealer at 5:00 p.m. on the third business day in New York City preceding such redemption date).

“Treasury Rate” means the rate per annum equal to the semi-annual equivalent or interpolated (on a daycount basis) yield to maturity of the applicable Comparable Treasury Issue, assuming a price for such Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the applicable Comparable Treasury Price for that redemption date.

Notice of any redemption is required to be mailed at least 30 days but not more than 60 days before the redemption date to each registered holder of Notes to be redeemed.

If less than all of the Notes of a series are to be redeemed at any time, selection of the Notes of a series for redemption is required to be made by the trustee by such method as the Notes trustee deems fair and appropriate.appropriate; provided, that if the Notes of a series to be redeemed are represented by one or more Global Notes (as hereinafter defined), beneficial interests in such Notes will be selected for redemption by the Depositary (as hereinafter defined) in accordance with its standard procedures therefor.

Upon the payment of the redemption price, plus any accrued and unpaid interest, if any, to the date of redemption, interest will cease to accrue on and after the applicable redemption date on the Notes or such series or portions thereof called for redemption.

No Sinking Fund

No series of the Notes will be subject to any mandatory sinking fund.

Ranking

Each series of the Notes are our general, unsecured senior obligations and will rank pari passu in right of payment with all of our other existing and future senior unsecured obligations (including the series D notes, the series E bonds, the series F bonds, the series G bonds, the series H notes, the series J notes, the series K notes, the series L notes and the series HM notes) and senior in right of payment to all of our existing and future subordinated obligations. The Notes will be effectively subordinated to all of our existing and future secured obligations and to all existing and future obligations of our Subsidiaries. As of September 30, 2013, our2014, we had outstanding senior indebtedness was approximately $4.6unsecured debt of $6.4 billion, which does not include the $2.0$1.5 billion of Initial Notes. This amount excludes (i)Notes issued on December 4, 2014, junior subordinated debentures of $2.3 billion, which does not include $1.5 billion of junior subordinated debentures issued and sold to subsidiaries of Berkshire Hathaway to fund part of the AltaLink Acquisition, and borrowings under our commercial paper program of $75 million. These amounts also exclude our commitments to provide equity contributions in support of the construction of certain solar and wind projects totaling $3.0$1.8 billion, as of September 30, 2013, and (ii) our guarantees and letters of credit in respect of our Subsidiaries and equity method investments, aggregating approximately $229 million as of September 30, 2013.$220 million. Our Subsidiaries also have significant amounts of indebtedness. Asoutstanding debt, which totaled $23.9 billion as of September 30, 2013, our consolidated Subsidiaries had outstanding indebtedness totaling approximately $18.2 billion, excluding (i) any2014. These amounts exclude (a) trade debt, (ii)(b) preferred stock obligations, (iii)(c) our Subsidiaries’ letters of credit in respect of their indebtedness, or (iv)debts, and (d) our share of the outstanding indebtednessdebt of our own or our Subsidiaries’ equity method investments. In addition, upon completionas part of the NV Energy Transaction on December 19, 2013,AltaLink Acquisition, we acquired subsidiaries that hadreported outstanding debt of $4.921C$4.1 billion as of September 30, 2013.2014.

Covenants

Except as set forth under “—Defeasance and Discharge—Covenant Defeasance” below, for so long as any securities remain outstanding, we will comply with the terms of the covenants set forth below.

Restrictions on Liens

We will not be permitted to pledge, mortgage, hypothecate or permit to exist any pledge, mortgage or other Lien upon any property or assets at any time directly owned by us to secure any indebtedness for money

borrowed which is incurred, issued, assumed or guaranteed by us (“Indebtedness for Borrowed Money”), without making effective provisions whereby the outstanding securities will be equally and ratably secured with any and all such Indebtedness for Borrowed Money and with any other Indebtedness for Borrowed Money similarly entitled to be equally and ratably secured; provided, however, that this restriction will not apply to or prevent the creation or existence of:

(1) any Liens existing prior to the issuance of the securities;

(2) purchase money Liens which do not exceed the cost or value of the purchased property or assets;

(3) any Liens not to exceed 10% of Consolidated Net Tangible Assets; and

(4) any Liens on property or assets granted in connection with extending, renewing, replacing or refinancing in whole or in part the Indebtedness for Borrowed Money (including, without limitation, increasing the principal amount of such Indebtedness for Borrowed Money) secured by Liens described in the foregoing clauses (1) through (3), provided that the Liens in connection with any such extension, renewal, replacement or refinancing will be limited to the specific property or assets that was subject to the original Lien.

In the event that we propose to pledge, mortgage or hypothecate or permit to exist any pledge, mortgage or other Lien upon any property or assets at any time directly owned by us to secure any Indebtedness for Borrowed Money, other than as permitted by clauses (1) through (4) of the previous paragraph, we are required to give prior written notice thereof to the trustee and we are required, prior to or simultaneously with such pledge, mortgage or hypothecation, to secure effectively all the securities equally and ratably with such Indebtedness for Borrowed Money.

The foregoing covenant will not restrict the ability of our Subsidiaries and affiliates to pledge, mortgage, hypothecate or permit to exist any mortgage, pledge or Lien upon their property or assets, in connection with project financings or otherwise.

Consolidation, Merger, Conveyance, Sale or Lease

So long as any securities are outstanding, we will not be permitted to consolidate with or merge with or into any other person, or convey, transfer or lease our consolidated properties and assets substantially as an entirety to any person, or permit any person to merge into or consolidate with us, unless (1) we are the surviving or continuing corporation or the surviving or continuing corporation or purchaser or lessee is a corporation incorporated under the laws of the United States,U.S., one of the states thereof or the District of Columbia or Canada and assumes our obligations under the securities and under the indenture and (2) immediately before and after such transaction, no event of default under the indenture shall have occurred and be continuing.

Except for a sale of our consolidated properties and assets substantially as an entirety as provided above, and other than properties or assets required to be sold to conform with laws or governmental regulations, we will not be permitted, directly or indirectly, to sell or otherwise dispose of any of our consolidated properties or assets (other than short-term, readily marketable investments purchased for cash management purposes with funds not representing the proceeds of other asset sales) if on a pro forma basis, the aggregate net book value of all such sales during the most recent 12-month period would exceed 10% of Consolidated Net Tangible Assets computed as of the end of the most recent quarter preceding such sale; provided, however, that (1) any such sales shall be disregarded for purposes of this 10% limitation if the net proceeds are invested in properties or assets in similar or related lines of business of us and our Subsidiaries, including, without limitation, any of the lines of business in which we or any of our Subsidiaries are engaged on the date of such sale or disposition, and (2) we may sell or otherwise dispose of consolidated properties and assets in excess of such 10% limitation if the net proceeds from such sales or dispositions, which are not reinvested as provided above, are retained by us as cash or Cash Equivalents or used to retire Indebtedness for Borrowed Money of us (other than Indebtedness for Borrowed Money which is subordinated to the securities) and our Subsidiaries.

The covenant described immediately above includes a phrase relating to a conveyance, transfer or lease of our consolidated properties and assets “substantially as an entirety.” Although there is a limited body of case law interpreting the phrase “substantially as an entirety,” there is no precise established definition of the phrase under applicable law. Accordingly, the nature and extent of the restriction on our ability to convey, transfer or lease our consolidated properties or assets substantially as an entirety, and the protections provided to the holders of securities by such restriction, may be uncertain.

Purchase of Securities Upon a Change of Control

Upon the occurrence of a Change of Control, each holder of the securities will have the right to require that we repurchase all or any part of such holder’s securities at a purchase price in cash equal to 101% of the principal thereof on the date of purchase plus any accrued interest, if any, to the date of purchase.

The Change of Control provisions may not be waived by the trustee or by our board of directors, and any modification thereof must be approved by each holder. Nevertheless, the Change of Control provisions will not necessarily afford protection to holders, including protection against an adverse effect on the value of the securities of any series, including the Notes of each series, in the event that we or our Subsidiaries incur additional Debt, whether through recapitalizations or otherwise.

Within 30 days following a Change of Control, we will mail a notice to each holder of the securities with a copy to the trustee, stating the following:

On the Purchase Date, we will be required to (1) accept for payment all securities or portions thereof tendered pursuant to the Change of Control Offer, (2) deposit with the trustee money sufficient to pay the purchase price of all securities or portions thereof so tendered for purchase and (3) deliver or cause to be delivered to the trustee the securities properly tendered together with an officer’s certificate identifying the securities or portions thereof tendered to us for purchase. The trustee will promptly mail, to the holders of the securities properly tendered and purchased, payment in an amount equal to the purchase price, and promptly authenticate and mail to each holder a new security having a principal amount equal to any portion of such holder’s securities that were surrendered but not tendered and purchased. We will publicly announce the results of the Change of Control Offer on or as soon as practicable after the Purchase Date.

If we are prohibited by applicable law from making the Change of Control Offer or purchasing securities of any series, including the Notes of each series, thereunder, we need not make a Change of Control Offer pursuant to this covenant for so long as such prohibition is in effect.

We will be required to comply with all applicable tender offer rules, including, without limitation,Rule 14e-1 under the Exchange Act, in connection with a Change of Control Offer.

Events of Default

An event of default with respect to the securities of any series, including the Notes of each series, is defined in the indenture as being any one of the following events:

(7)

certain events involving bankruptcy, insolvency or reorganization of us or any of our Significant Subsidiaries.

The indenture provides that the trustee may withhold notice to the holders of any default (except in payment of principal of, premium, if any, or interest on any series of securities and any payment required in connection with a Change of Control) if the trustee considers it in the interest of holders to do so.

The indenture provides that if an event of default with respect to the securities of any series at the time outstanding, including the Notes of each series (other than an event of bankruptcy, insolvency or reorganization of us or a Significant Subsidiary) has occurred and is continuing, either the trustee or (i) in the case of any event of default described in clause (1) or (2) above, the holders of at least 33% in aggregate principal amount of the securities of that series then outstanding, or (ii) in the case of any other event of default, the holders of at least a majority in aggregate principal amount of the securities of that series then outstanding, may declare the principal of and any accrued interest on all securities of that series to be due and payable immediately, but upon certain conditions such declaration may be annulled and past defaults (except, unless theretofore cured, a default in payment of principal of, premium, if any, or interest on the securities of that series or any payment required in connection with a Change of Control) may be waived by the holders of a majority in principal amount of the

securities of that series then outstanding. If an event of default due to the bankruptcy, insolvency or reorganization of us or a Significant Subsidiary occurs, the indenture provides that the entire principal amount of and any interest accrued on all securities will become immediately due and payable without any action by the trustee, the holders of securities or any other person.

The holders of a majority in principal amount of the securities of any series then outstanding, including the Notes of each series, will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee under the indenture with respect to the securities of such series, subject to certain limitations specified in the indenture, provided that the holders of securities of such series must have offered to the trustee reasonable indemnity against expenses and liabilities.

The indenture requires the annual filing by us with the trustee of a written statement as to our knowledge of the existence of any default in the performance and observance of any of the covenants contained in the indenture.

Modification of the Indenture

The indenture contains provisions permitting us and the trustee, with the consent of the holders of not less than a majority in principal amount of the outstanding securities of each series affected by the modification, including the Notes, to modify the indenture or the rights of the holders of such series, except that no such modification may (1) extend the stated maturity of the principal of or any installment of interest on the securities, reduce the principal amount thereof or the interest rate thereon, reduce any premium payable on redemption or purchase thereof, impair the right of any holder to institute suit for the enforcement of any such payment on or after the stated maturity thereof or make any change in the covenants regarding a Change of Control or the related definitions without the consent of the holder of each outstanding security so affected, or (2) reduce the percentage of any series of securities, the consent of the holders of which is required for any such modification, without the consent of the holders of all series of securities then outstanding.

Defeasance and Discharge

Legal Defeasance

The indenture provides that we will be deemed to have paid and will be discharged from any and all obligations in respect of the Notes of each series or any other series of securities issued thereunder on the 123rd day after the deposit referred to below has been made (or immediately if an opinion of counsel is delivered to the

effect described in clause (B)(3)(y) below), and the provisions of the indenture will cease to be applicable with respect to the securities of such series (except for, among other matters, certain obligations to register the transfer or exchange of the securities of such series, to replace stolen, lost or mutilated securities of such series, to maintain paying agents and to hold monies for payment in trust) if, among other things:

(A) We have deposited with the trustee, in trust, money and/or U.S. Government Obligations that through the payment of interest and principal in respect thereof in accordance with their terms will provide money in an amount sufficient to pay the principal of, premium, if any, and accrued and unpaid interest on the applicable securities, on the respective stated maturities of the securities or, if we make arrangements satisfactory to the trustee for the redemption of the securities prior to their stated maturity, on any earlier redemption date in accordance with the terms of the indenture and the applicable securities;

(B) We have delivered to the trustee:

and discharge had not occurred and we had paid or redeemed such securities on the applicable stated maturity dates, which opinion of counsel must be based upon a ruling of the U.S. Internal Revenue Service (the “IRS”) to the same effect or a change in applicable U.S. federal income tax law or related Treasury regulations after the date of the indenture, or (y) a ruling directed to the trustee or we received from the IRS to the same effect as the aforementioned opinion of counsel;

(C) if at such time the securities are listed on a national securities exchange, we have delivered to the trustee an opinion of counsel to the effect that the securities will not be delisted as a result of such deposit, defeasance and discharge; and

(D) immediately after giving effect to such deposit referred to in clause (A) above on a pro forma basis, no event of default under the indenture, or event that after the giving of notice or lapse of time or both would become an event of default, will have occurred and be continuing on the date of such deposit or (unless an opinion of counsel is delivered to the effect described in clause (B)(3)(y) above) during the period ending on the 123rd day after the date of such deposit, and such deposit and discharge will not result in a breach or violation of, or constitute a default under, any other material agreement or instrument to which we are a party or by which we are bound.

Covenant Defeasance

The indenture further provides that the provisions of the covenants described herein under “Covenants—Restrictions on Liens,” “—Consolidation, Merger, Conveyance, Sale or Lease” and “Purchase of Securities Upon a Change of Control,” clauses (3) and (4) under “Events of Default” with respect to such covenants, clause (2) under “Events of Default” with respect to offers to purchase upon a Change of Control as described above

and clauses (5) and (6) under “Events of Default” will cease to be applicable to us and our Subsidiaries upon the satisfaction of the provisions described in clauses (A), (B), (C) and (D) of the preceding paragraph; provided, however, that with respect to such covenant defeasance, the opinion of counsel described in clause (B)(1)(x) above need not be based upon any ruling of the IRS or change in applicable U.S. federal income tax law or related Treasury regulations.

Defeasance and Certain Other Events of Default

If we exercise our option to omit compliance with certain covenants and provisions of the indenture with respect to the securities of any series, including the Notes of each series, as described in the immediately preceding paragraph and any series of securities is declared due and payable because of the occurrence of an event of default that remains applicable, the amount of money and/or U.S. Government Obligations on deposit with the trustee will be sufficient to pay amounts due on such securities at the time of their stated maturity or scheduled redemption, but may not be sufficient to pay amounts due on such securities at the time of acceleration resulting from such event of default. We will remain liable for such payments.

Governing Law

The indenture and the securities will be governed by, and construed in accordance with, the law of the State of New York, including Section 5-1401 of the New York General Obligations Law, but otherwise without regard to conflict of laws rules.

Trustee

The Bank of New York Mellon Trust Company, N.A. is the trustee under the indenture. The Bank of New York Mellon Trust Company, N.A. (or one of its affiliates) currently serves, and may in the future serve, as trustee under indentures evidencing other indebtedness of ours and our affiliates. The Bank of New York Mellon Trust Company, N.A. (or one of its affiliates) is also, and may in the future be, a lender under credit facilities for us and our affiliates. The trustee will be under no obligation to exercise any of the rights or powers vested in it by the indenture at the request or direction of any of the holders pursuant to the indenture, unless such holders have offered to the trustee security or indemnity satisfactory to the trustee against the costs, expenses and liabilities which might be incurred by it in compliance with such request or direction.

Definitions

Set forth below is a summary of certain of the defined terms used in the covenants and other provisions of the indenture. Reference is made to the indenture for the full definitions of all such terms as well as any other capitalized terms used herein for which no definition is provided.

“Attributable Value” means, as to a Capitalized Lease Obligation under which any person is at the time liable and at any date as of which the amount thereof is to be determined, the capitalized amount thereof that would appear on the face of a balance sheet of such person in accordance with GAAP.

“Berkshire Hathaway” means Berkshire Hathaway Inc. and any Subsidiary of Berkshire Hathaway Inc.

“Capital Stock” means, with respect to any person, any and all shares, interests, participations or other equivalents (however designated, whether voting or non-voting) in, or interests (however designated) in, the equity of such person that is outstanding or issued on or after the date of the indenture, including, without limitation, all common stock and preferred stock and partnership and joint venture interests in such person.

“Capitalized Lease” means, as applied to any person, any lease of any property of which the discounted present value of the rental obligations of such person as lessee, in conformity with GAAP, is required to be capitalized on the balance sheet of such person, and “Capitalized Lease Obligation” means the rental obligations, as aforesaid, under any such lease.

“Cash Equivalent” means any of the following:

“Change of Control” means the occurrence of one or more of the following events:

provided that with respect to the foregoing subparagraphs (1) and (2), a Change of Control will not be deemed to have occurred unless and until a Rating Decline has occurred as well.

“Consolidated Net Tangible Assets” means, as of the date of any determination thereof, the total amount of all of our assets determined on a consolidated basis in accordance with GAAP as of such date less the sum of (a) our consolidated current liabilities determined in accordance with GAAP and (b) assets properly classified as Intangible Assets.

“Currency Protection Agreement” means, with respect to any person, any foreign exchange contract, currency swap agreement or other similar agreement or arrangement intended to protect such person against fluctuations in currency values to or under which such person is a party or a beneficiary on the date of the indenture or becomes a party or a beneficiary thereafter.

“Debt” means, with respect to any person, at any date of determination (without duplication):

For purposes of determining any particular amount of Debt that is or would be outstanding, Guarantees of, or obligations with respect to letters of credit or similar instruments supporting (to the extent the foregoing constitutes Debt), Debt otherwise included in the determination of such particular amount will not be included. For purposes of determining compliance with the indenture, in the event that an item of Debt meets the criteria of more than one of the types of Debt described in the above clauses, we, in our sole discretion, will classify such item of Debt and only be required to include the amount and type of such Debt in one of such clauses.

“Guarantee” means any obligation, contingent or otherwise, of any person directly or indirectly guaranteeing any Debt of any other person and, without limiting the generality of the foregoing, any Debt obligation, direct or indirect, contingent or otherwise, of such person (1) to purchase or pay (or advance or supply funds for the purchase or payment of) such Debt of such other person (whether arising by virtue of partnership arrangements (other than solely by reason of being a general partner of a partnership), or by agreement to keep-well, to purchase assets, goods, securities or services or to take-or-pay, or to maintain financial statement conditions or otherwise) or (2) entered into for purposes of assuring in any other manner the obligee of such Debt of the payment thereof or to protect such obligee against loss in respect thereof (in whole or in part), provided that the term “Guarantee” will not include endorsements for collection or deposit in the ordinary course of business or the grant of a lien in connection with any Non-Recourse Debt. The term “Guarantee” used as a verb has a corresponding meaning.

“Intangible Assets” means, as of the date of determination thereof, all of our assets properly classified as intangible assets determined on a consolidated basis in accordance with GAAP.

“Interest Rate Protection Agreement” means, with respect to any person, any interest rate protection agreement, interest rate future agreement, interest rate option agreement, interest rate swap agreement, interest rate cap agreement, interest rate collar agreement, interest rate hedge agreement or other similar agreement or arrangement intended to protect such person against fluctuations in interest rates to or under which such person or any of its Subsidiaries is a party or a beneficiary on the date of the indenture or becomes a party or a beneficiary thereafter.

“Joint Venture” means a joint venture, partnership or other similar arrangement, whether in corporate, partnership or other legal form.

“Lien” means, with respect to any Property, any mortgage, lien, pledge, charge, security interest or encumbrance of any kind in respect of such Property, but will not include any partnership, joint venture, shareholder, voting trust or similar governance agreement with respect to Capital Stock in a Subsidiary or Joint

Venture. For purposes of the indenture, we will be deemed to own subject to a Lien any Property that we have acquired or hold subject to the interest of a vendor or lessor under any conditional sale agreement, capital lease or other title retention agreement relating to such Property.

“Non-Recourse” means any Debt or other obligation (or that portion of such Debt or other obligation) that is without recourse to us or any property or assets directly owned by us (other than a pledge of the equity interests in any of our Subsidiaries, to the extent recourse to us under such pledge is limited to such equity interests).

“Property” of any person means all types of real, personal, tangible or mixed property owned by such person whether or not included in the most recent consolidated balance sheet of such person under GAAP.

“Rating Agencies” means (1) Standard and Poor’s, a division of McGraw Hill Financial, Inc. (“S&P”), and (2) Moody’s Investors Service, Inc. (“Moody’s”) or (3) if S&P or Moody’s or both do not make a rating of the securities publicly available, a nationally recognized securities rating agency or agencies, as the case may be, selected by us, which will be substituted for S&P, Moody’s or both, as the case may be.

“Rating Decline” means the occurrence of the following on, or within 90 days after, the earlier of (1) the occurrence of a Change of Control and (2) the earlier of (x) the date of public notice of the occurrence of a Change of Control or (y) the date of the public notice of our intention to effect a Change of Control (the “Rating Date”), which period will be extended so long as the rating of the Notes is under publicly announced consideration for possible downgrading by any of the Rating Agencies: the rating of such Notes by both such Rating Agencies is reduced below BBB+, in the case of S&P, and Baa1, in the case of Moody’s.

“Redeemable Stock” means any class or series of Capital Stock of any person that by its terms or otherwise is (1) required to be redeemed prior to the stated maturity of any series of the securities, (2) redeemable at the option of the holder of such class or series of Capital Stock at any time prior to the stated maturity of any series of the securities or (3) convertible into or exchangeable for Capital Stock referred to in clause (1) or (2) above or Debt having a scheduled maturity prior to the stated maturity of any series of the securities, provided that any Capital Stock that would not constitute Redeemable Stock but for provisions thereof giving holders thereof the right to require us to purchase or redeem such Capital Stock upon the occurrence of a “change of control” occurring prior to the stated maturity of any series of the securities will not constitute Redeemable Stock if the “change of control” provisions applicable to such Capital Stock are no more favorable to the holders of such Capital Stock than the provisions contained in the covenants described under “Purchase of Securities Upon a Change of Control” above.

“Redemption Date” means any date on which we redeem all or any portion of the securities in accordance with the terms of the indenture.

“Significant Subsidiary” means a “significant subsidiary” as defined in Rule 1-02(w) of Regulation S-X under the Securities Act and the Exchange Act, substituting 20 percent for 10 percent each place it appears therein. Unless the context otherwise clearly requires, any reference to a “Significant Subsidiary” is a reference to a Significant Subsidiary of ours.

“Subsidiary” means, with respect to any person, including, without limitation, we and our Subsidiaries, any corporation or other entity of which such person owns, directly or indirectly, a majority of the Capital Stock or other ownership interests and has ordinary voting power to elect a majority of the board of directors or other persons performing similar functions.

“Trade Payables” means, with respect to any person, any accounts payable or any other indebtedness or monetary obligation to trade creditors incurred, created, assumed or Guaranteed by such person or any of its Subsidiaries or Joint Ventures arising in the ordinary course of business.

“U.S. Government Obligations” means any security that is (1) a direct obligation of the United StatesU.S. for the payment of which its full faith and credit is pledged or (2) an obligation of a person controlled or supervised by and acting as an agency or instrumentality of the United States,U.S., the payment of which is unconditionally guaranteed as a full faith and credit obligation by the United States,U.S., that, in the case of clause (1) or (2) is not callable or redeemable at the option of the issuer thereof, and will also include any depository receipt issued by a bank or trust company as custodian with respect to any such U.S. Government Obligations or a specific payment of interest on or principal of any such U.S. Government Obligation held by such custodian for the account of the holder of a depository receipt, provided that (except as required by law) such custodian is not authorized to make any deduction from the amount payable to the holder of such depository receipt from any amount received by the custodian in respect of the U.S. Government Obligation or the specific payment of interest on or principal of the U.S. Government Obligation evidenced by such depository receipt.

“Voting Stock” means, with respect to any person, Capital Stock of any class or kind ordinarily having the power to vote for the election of directors (or persons fulfilling similar responsibilities) of such person.

Global Notes; Book-Entry System

The Initial Notes were, and the Exchange Notes will be, issued under a book-entry system in the form of one or more global notes (each, a “Global Note”). Each Global Note with respect to the Initial Notes was, and each Global Note with respect to the Exchange Notes will be, deposited with, or on behalf of, a depositary, which will be The Depository Trust Company, New York, New York (the “Depositary”). The Global Notes with respect to the Initial Notes were, and the Global Notes with respect to the Exchange Notes will be, registered in the name of the Depositary or its nominee.

The Initial Notes were not issued in certificated form and, except under the limited circumstances described below, owners of beneficial interests in the Global Notes will not be entitled to physical delivery of the Notes in certificated form. The Global Notes may not be transferred except as a whole by the Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any nominee to a successor of the Depositary or a nominee of such successor.

The Depositary is a limited-purpose trust company organized under the New York Banking Law, a “banking organization” within the meaning of the New York Banking Law, a member of the Federal Reserve System, a “clearing corporation” within the meaning of the New York Uniform Commercial Code, and a “clearing agency” registered pursuant to the provisions of Section 17A of the Exchange Act. The Depositary holds securities that its participants (“Direct Participants”) deposit with the Depositary. The Depositary also facilitates the post-trade settlement among Direct Participants of securities transactions, such as transfers and pledges, in deposited securities through electronic computerized book-entry changes in Direct Participants’ accounts, thereby eliminating the need for physical movement of securities certificates. Direct Participants include securities

brokers and dealers, banks, trust companies, clearing corporations and certain other organizations, including Euroclear Bank S.A./N.V. as operator of the Euroclear System (“Euroclear”) and Clearstream Banking, société anonyme (“Clearstream”). The Depositary is a wholly-owned subsidiary of The Depository Trust & Clearing Corporation (“DTCC”). DTCC, in turn, is owned by a number of Direct Participants and Members of the National Securities Clearing Corporation, Government Securities Clearing Corporation, MBS Clearing Corporation and Emerging Markets Clearing Corporation, also subsidiaries of DTCC, as well as by the New York Stock Exchange, Inc., the American Stock Exchange LLC and the National Association of Securities Dealers, Inc. Access to the Depositary system is also available to others such as securities brokers and dealers, banks and trust companies that clear through or maintain a custodial relationship with a Direct Participant, either directly or indirectly (“Indirect Participants”). The rules applicable to the Depositary and its Direct and Indirect Participants are on file with the SEC.

Purchases of the securities under the Depositary system must be made by or through Direct Participants, which will receive a credit for the securities on the Depositary’s records. The ownership interest of each actual purchaser of each security (“Beneficial Owner”) is in turn to be recorded on the Direct and Indirect Participants’

records. Beneficial Owners will not receive written confirmation from the Depositary of their purchase, but Beneficial Owners are expected to receive written confirmations providing details of the transaction, as well as periodic statements of their holdings, from the Direct or Indirect Participant through which the Beneficial Owner entered into the transaction. Transfers of ownership interests in the securities are to be accomplished by entries made on the books of Direct and Indirect Participants acting on behalf of Beneficial Owners. Beneficial Owners will not receive certificates representing their ownership interests in securities, except in the event that use of the book-entry system for the securities is discontinued.

To facilitate subsequent transfers, all Notes deposited by Direct Participants with the Depositary will be registered in the name of the Depositary’s partnership nominee, Cede & Co., or such other name as may be requested by an authorized representative of the Depositary. The deposit of Notes with the Depositary and their registration in the name of Cede & Co. or such other nominee effect no change in beneficial ownership. The Depositary has no knowledge of the actual Beneficial Owners of the Notes; the Depositary’s records reflect only the identity of the Direct Participants to whose accounts such Notes are credited, which may or may not be the Beneficial Owners. The Direct and Indirect Participants will remain responsible for keeping account of their holdings on behalf of their customers.

Conveyance of notices and other communications by the Depositary to Direct Participants, by Direct Participants to Indirect Participants, and by Direct Participants and Indirect Participants to Beneficial Owners will be governed by arrangements among them, subject to any statutory or regulatory requirements as may be in effect from time to time.

Neither the Depositary nor Cede & Co. (nor any other nominee of the Depositary) will consent or vote with respect to the Notes unless authorized by a Direct Participant in accordance with the Depositary’s procedures. Under its usual procedures, the Depositary mails an Omnibus Proxy to us as soon as possible after the record date. The Omnibus Proxy assigns Cede & Co.’s consenting or voting rights to those Direct Participants to whose accounts the securities are credited on the record date (identified in a listing attached to the Omnibus Proxy).

Principal (and premium, if any) and interest payments on the Notes and any redemption payments will be made to Cede & Co. (or such other nominee as may be requested by an authorized representative of the Depositary). The Depositary’s practice is to credit Direct Participants’ accounts upon the Depositary’s receipt of funds and corresponding detail information from us or the trustee on the payable date in accordance with their respective holdings shown on the Depositary’s records. Payments by Participants to Beneficial Owners will be governed by standing instructions and customary practices, as is the case with securities held for the accounts of customers in bearer form or registered in “street name,” and will be the responsibility of such Participant and not of the Depositary, the trustee or us, subject to any statutory or regulatory requirements as may be in effect from time to time. Payment of principal (and premium, if any), interest and any redemption proceeds to Cede & Co.

(or (or such other nominee as may be requested by an authorized representative of the Depositary) is our responsibility, disbursements of such payments to Direct Participants shall be the responsibility of the Depositary, and disbursement of such payments to the Beneficial Owners shall be the responsibility of Direct and Indirect Participants.

The Depositary may discontinue providing its services as securities depositary with respect to the Notes at any time by giving reasonable notice to us or the trustee. Under such circumstances, in the event that a successor securities depositary is not obtained, certificated Notes are required to be printed and delivered. We may decide to discontinue use of the system of book-entry transfers through the Depositary (or a successor securities depositary). In that event, certificated Notes will be printed and delivered.

The information in this section concerning the Depositary and the Depositary’s book-entry system has been obtained from sources that we believe to be reliable but has not been independently verified by us, the initial purchasers or the trustee.

A Global Note of any series may not be transferred except as a whole by the Depositary to a nominee or successor of the Depositary or by a nominee of the Depositary to another nominee of the Depositary. A Global Note representing Notes is exchangeable, in whole but not in part, for Notes in definitive form of like tenor and terms if (1) the Depositary notifies us that it is unwilling or unable to continue as depositary for such Global Note or if at any time the Depositary is no longer eligible to be or in good standing as a “clearing agency” registered under the Exchange Act, and in either case, a successor depositary is not appointed by us within 120 days of receipt by us of such notice or of our becoming aware of such ineligibility, (2) while such Global Note is subject to the transfer restrictions described under “Transfer Restrictions,” the book-entry interests in such Global Note cease to be eligible for Depositary services because such Notes are neither (a) rated in one of the top four categories by a nationally recognized statistical rating organization nor (b) included within a Self-Regulatory Organization system approved by the SEC for the reporting of quotation and trade information of securities eligible for transfer pursuant to Rule 144A, or (3) we in our sole discretion (subject to the procedures of the Depositary) at any time determine not to have such Notes represented by a Global Note and notify the trustee thereof. A Global Note exchangeable pursuant to the preceding sentence shall be exchangeable for Notes registered in such names and in such authorized denominations as the Depositary shall direct.

CERTAINMATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS

The following discussion summarizes the material U.S. federal income tax consequences of the exchange of Initial Notes for Exchange Notes. This discussion is based upon the U.S. Internal Revenue Code of 1986, as amended (the “Code”), the U.S. Treasury Regulations promulgated thereunder, administrative pronouncements, rulings and judicial decisions, all as in effect on the date hereof and all of which are subject to change or differing interpretations, possibly with retroactive effect. This summary addresses only the U.S. federal income tax consequences applicable to holders of the exchange of ExchangeInitial Notes that are acquired in this offering in exchange forthe Initial Notes originally acquired at their initial offering for an amount of cash equal to their issue price and held the Initial Notes as “capital assets” within the meaning of Section 1221 of the Code.

This summary does not address all of the U.S. federal income tax considerations that may be relevant to a particular holder in light of the holder’s individual circumstances or to holders subject to special rules under U.S. federal income tax laws, such as banks and other financial institutions, insurance companies, real estate investment trusts, regulated investment companies, tax-exempt organizations, entities and arrangements classified as partnerships for U.S. federal income tax purposes and other pass-through entities, dealers in securities or currencies, traders in securities that elect to use a mark-to-market method of accounting, persons liable for U.S. federal alternative minimum tax, U.S. holders whose functional currency is not the U.S. dollar, U.S. expatriates, and persons holding notes as part of a “straddle,” “hedge,” “conversion transaction,” or other integrated investment. The discussion does not address any foreign, state, local or non-income tax consequences of the exchange of Initial Notes for Exchange Notes.

This discussion is for general information purposes only, and is not intended to be and should not be construed to be, legal or tax advice to any particular holder. Holders are urged to consult their own tax advisors regarding the application of the U.S. federal income tax laws to their particular situations, the consequences under federal estate or gift tax laws, as well as foreign, state, or local laws and tax treaties, and the possible effects of changes in tax laws.

U.S. Federal Income Tax Consequences of the Exchange Offer to Holders of Initial Notes

The exchange of Initial Notes for Exchange Notes pursuant to the Exchange Offer will not be a taxable exchange for U.S. federal income tax purposes. Holders of Initial Notes will not recognizerealize any taxable gain or loss as a result of such exchange and will have the same adjusted issue price, tax basis, and holding period in the Exchange Notes as they had in the Initial Notes immediately before the exchange. The U.S. federal income tax consequences of holding and disposing of the Exchange Notes will be the same as those applicable to the Initial Notes.

CERTAIN ERISA CONSIDERATIONS

The following is a summary of certain considerations associated with the purchase and holding of the Exchange Notes by employee benefit plans that are subject to Title I of ERISA, plans, individual retirement accounts and other arrangements that are subject to Section 4975 of the Code or provisions under any other federal, state, local, non-U.S. or other laws, rules or regulations that are similar to such provisions of ERISA or the Code (collectively, “Similar Laws”), and entities whose underlying assets are considered to include “plan assets” of any such plan, account or arrangement (each, a “Plan”).

General Fiduciary Matters

ERISA and the Code impose certain duties on persons who are fiduciaries of a Plan subject to Title I of ERISA or Section 4975 of the Code (an “ERISA Plan”) and prohibit certain transactions involving the assets of an ERISA Plan and its fiduciaries or other interested parties. Under ERISA and the Code, any person who exercises any discretionary authority or control over the administration of such an ERISA Plan or the management or disposition of the assets of such an ERISA Plan, or who renders investment advice for a fee or other compensation to such an ERISA Plan, is generally considered to be a fiduciary of the ERISA Plan.

In considering an investment in the Exchange Notes of a portion of the assets of any Plan, a fiduciary should determine whether the investment is in accordance with the documents and instruments governing the Plan and the applicable provisions of ERISA, the Code or any Similar Law relating to a fiduciary’s duties to the Plan including, without limitation, the prudence, diversification, delegation of control and prohibited transaction provisions of ERISA, the Code and any other applicable Similar Laws.

Prohibited Transaction Issues

Section 406 of ERISA and Section 4975 of the Code prohibit ERISA Plans from engaging in specified transactions involving plan assets with persons or entities who are “parties in interest,” within the meaning of ERISA, or “disqualified persons,” within the meaning of Section 4975 of the Code, unless an exemption is available. A party in interest or disqualified person who engages in a non-exempt prohibited transaction may be subject to excise taxes and other penalties and liabilities under ERISA and the Code. In addition, the fiduciary of the ERISA Plan that engages in such a non-exempt prohibited transaction may be subject to penalties and liabilities under ERISA and the Code. The acquisition and/or holding of Exchange Notes by an ERISA Plan with respect to which the issuer, the initial purchasers or the guarantors are considered a party in interest or a disqualified person may constitute or result in a direct or indirect prohibited transaction under Section 406 of ERISA and/or Section 4975 of the Code, unless the investment is acquired and is held in accordance with an applicable statutory, class or individual prohibited transaction exemption.

In this regard, the U.S. Department of Labor has issued prohibited transaction class exemptions (“PTCEs”) that may apply to the acquisition and holding of the Exchange Notes. These class exemptions include, without limitation, PTCE 84-14 respecting transactions determined by independent qualified professional asset managers, PTCE 90-1 respecting insurance company pooled separate accounts, PTCE 91-38 respecting bank collective investment funds, PTCE 95-60 respecting life insurance company general accounts, and PTCE 96-23 respecting transactions determined by in-house asset managers. In addition, Section 408(b)(17) of ERISA and Section 4975(d)(20) of the Code provide relief from the prohibited transaction provisions of ERISA and Section 4975 of the Code for certain transactions, provided that neither the issuer of the securities nor any of its affiliates (directly or indirectly) have or exercise any discretionary authority or control or render any investment advice with respect to the assets of any ERISA Plan involved in the transaction and provided further that the ERISA Plan pays no more than adequate consideration in connection with the transaction. There can be no assurance that all of the conditions of any such exemptions will be satisfied.

Because of the foregoing, the Initial Notes should not be exchanged for Exchange Notes by any person investing “plan assets” of any Plan, unless such exchange will not constitute a non-exempt prohibited transaction under ERISA and the Code or similar violation of any applicable Similar Laws.

Representation

Accordingly, by acceptance of an Exchange Note, each purchaser and subsequent transferee will be deemed to have represented and warranted that either (i) no portion of the assets used by such purchaser or transferee to acquire or hold the Exchange Notes constitutes assets of any Plan or (ii) the exchange of the Initial Notes for the Exchange Notes or the holding of the Exchange Notes by such purchaser or transferee will not constitute a non-exempt prohibited transaction under Section 406 of ERISA, Section 4975 of the Code or a similar violation under any applicable Similar Laws.

The foregoing discussion is general in nature and is not intended to be all-inclusive. Due to the complexity of these rules and the penalties that may be imposed upon persons involved in non-exempt prohibited transactions, it is particularly important that fiduciaries, or other persons considering acquiring the Exchange Notes (and holding the Exchange Notes) on behalf of, or with the assets of, any Plan, consult with their counsel regarding the potential applicability of ERISA, Section 4975 of the Code and any Similar Laws to such transactions and whether an exemption would be applicable to the acquisition and holding of the Exchange Notes (and exchange for the Exchange Notes).

Persons that acquire the Exchange Notes have the exclusive responsibility for ensuring that their acquisition and holding of the Exchange Notes complies with the fiduciary responsibility rules of ERISA and does not violate the prohibited transaction rules of ERISA, the Code or Similar Laws.

PLAN OF DISTRIBUTION

Based on existing interpretations of the Securities Act by the staff of the SEC set forth in several no-action letters to third parties, and subject to the immediately following sentence, we believe that the Exchange Notes that will be issued pursuant to the Exchange Offer may be offered for resale, resold and otherwise transferred by the holders thereof without further compliance with the registration and prospectus delivery provisions of the Securities Act. However, any purchaser of Notes who is an “affiliate” (within the meaning of the Securities Act) of ours or who intends to participate in the Exchange Offer for the purpose of distributing the Exchange Notes or a broker-dealer (within the meaning of the Securities Act) that acquired Initial Notes in a transaction other than as part of its market-making or other trading activities and who has arranged or has an understanding with any person to participate in the distribution of the Exchange Notes: (1) will not be able to rely on the interpretations by the staff of the SEC set forth in the above-mentioned no-action letters; (2) will not be able to tender its Initial Notes in the Exchange Offer; and (3) must comply with the registration and prospectus delivery requirements of the Securities Act in connection with any sale or transfer of the Notes unless such sale or transfer is made pursuant to an exemption from such requirements.

Each broker-dealer that receives Exchange Notes for its own account pursuant to the Exchange Offer must acknowledgeacknowledges that it will deliver a prospectus in connection with any resale of such Exchange Notes. This prospectus, as it may be amended or supplemented from time to time, may be used by a broker-dealer in connection with resales of Exchange Notes received in exchange for Initial Notes where such Initial Notes were acquired as a result of market-marketing activities or other trading activities. We have agreed that, for a period of 120 days after the expiration date, we will make this prospectus, as amended or supplemented, available to any broker-dealer for use in connection with any such resale.

We will not receive any proceeds from any such sale of Exchange Notes by broker-dealers. Exchange notesNotes received by broker-dealers for their own account pursuant to the Exchange Offer may be sold from time to time in one or more transactions in the over-the-counter market, in negotiated transactions, through the writing of options on the Exchange Notes or a combination of such methods of resale, at market prices prevailing at the time of resale, at prices related to such prevailing market prices or at negotiated prices. Any such resale may be made directly to purchasers or to or through brokers or dealers who may receive compensation in the form of commissions or concessions from any such broker-dealer and/or the purchasers of any such Exchange Notes. Any broker-dealer that resells Exchange Notes that were received by it for its own account pursuant to the Exchange Offer and any broker or dealer that participates in a distribution of such Exchange Notes may be deemed to be an “underwriter��“underwriter” within the meaning of the Securities Act and any profit on any such resale of Exchange Notes and any commissions or concessions received by any such persons may be deemed to be underwriting compensation under the Securities Act. The letter of transmittal states that by acknowledging that it will deliver and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an “underwriter” within the meaning of the Securities Act.

For a period of 120 days after the expiration date, we will promptly send additional copies of this prospectus and any amendment or supplement to this prospectus to any broker-dealer that requests such documents in the letter of transmittal. We have agreed to pay all expenses incident to the Exchange Offer (including the expenses of one counsel for the holders of the notesnotes) other than commissions or concessions of any brokers or dealers and will indemnify the holders of the notesNotes (including any broker-dealers) against certain liabilities, including liabilities under the Securities Act.

LEGAL MATTERS

Certain legal matters with respect to the Exchange Notes will be passed upon for us by Gibson, Dunn & Crutcher LLP, New York, New York.

EXPERTS

The consolidated financial statements and related financial statement schedules of MidAmericanBerkshire Hathaway Energy Holdings Company and its subsidiaries, as of December 31, 20122013 and 20112012 and for each of the three years in the period ended December 31, 2012,2013, incorporated in this prospectus by reference from our Annual Report on Form 10-K for the year ended December 31, 2012,2013, have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report, which is incorporated herein by reference. Such consolidated financial statements and financial statement schedules have been so included and incorporated in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.

With respect to the unaudited interim financial information for the periods ended March 31, 20132014 and 2012,2013, June 30, 20132014 and 20122013 and September 30, 20132014 and 2012,2013, which are incorporated in this prospectus by reference, Deloitte & Touche LLP, an independent registered public accounting firm, have applied limited procedures in accordance with the standards of the Public Company Accounting Oversight Board (United States) for a review of such information. However, as stated in their reports included in MidAmericanBerkshire Hathaway Energy Holdings Company’s Quarterly Reports on Form 10-Q for the quarters ended March 31, 2013,2014, June 30, 20132014 and September 30, 20132014 and incorporated by reference herein, they did not audit and they do not express an opinion on that interim financial information. Accordingly, the degree of reliance on their report on such information should be restricted in light of the limited nature of the review procedures applied. Deloitte & Touche LLP are not subject to the liability provisions of Section 11 of the Securities Act for their reports on the unaudited interim financial information because those reports are not “reports” or a “part” of the offering memorandum prepared or certified by an accountant within the meaning of Sections 7 and 11 of the Securities Act.

WHERE YOU CAN FIND MORE INFORMATION

We, and our subsidiaries, PacifiCorp, MidAmerican Funding, LLC and MidAmerican Energy Company (combined), Nevada Power Company and Sierra Pacific Power Company, each file reports and information statements and other information with the SEC. You can inspect and copy reports and other information filed by us, PacifiCorp, MidAmerican Funding, LLC and MidAmerican Energy Company (combined), Nevada Power Company and Sierra Pacific Power Company, respectively, at the public reference facilities maintained by the SEC at Headquarters Office, 100 F Street, N.E., Washington, D.C. 20549. You can call the SEC at1-800-SEC-0330 for information regarding the operations of its Public Reference Room. The SEC also maintains a Website that contains reports, proxy and information statements and other materials that are filed through the SEC’s Electronic Data Gathering, Analysis, and Retrieval (EDGAR) system. This Website can be accessed athttp://www.sec.gov.www.sec.gov.

We make available free of charge through our internet website athttp://www.midamerican.comwww.berkshirehathawayenergyco.com our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, and amendments to those reports filed or furnished in compliance with the requirements of Section 13(a) or 15(d) of the Exchange Act, as soon as reasonably practicable after we electronically file with, or furnish to, the SEC. Any information available on or through our website is not part of this prospectus, except to the extent it is expressly incorporated by reference herein as set forth under “Incorporation of Certain Documents by Reference” below.

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

The following documents filed with the SEC (File No. 001-14881) are incorporated by reference into this prospectus:

All documents and other reports filed by us with the SEC pursuant to Section 13 or 15(d) of the Exchange Act subsequent to the date of the initial registration statement that contains this prospectus and prior to the consummation of the Exchange Offer, pursuantincluding all such documents and other reports we may file with the SEC after the date of the initial registration statement and prior to Section 13 or 15(d)expiration date of the Exchange ActOffer, shall be deemed to be incorporated by reference into this prospectus and to be a part hereof from the date of filing of such documents and other reports.reports, except that we are not incorporating by reference any information we furnish (but do not file) under Item 2.02 or Item 7.01 of any Current Report on Form 8-K or Form 8-K/A.

Any statement contained in a document incorporated by reference herein shall be deemed to be modified or superseded for purposes of this prospectus to the extent that a statement contained herein, or in any other subsequently filed document which is also incorporated herein by reference, modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed to constitute a part of this prospectus except as so modified or superseded.

We hereby undertake to provide without charge to each person to whom a copy of this prospectus has been delivered, on the written or oral request of any such person, a copy of any or all of the documents referred to above which have been or may be incorporated into this prospectus by reference, other than exhibits to such documents. Requests for such copies should be directed to Vice President and Treasurer, MidAmericanBerkshire Hathaway Energy Holdings Company, 666 Grand Avenue, Suite 500, Des Moines, Iowa 50309-2580, telephone number(515) 242-4300.

All tendered Initial Notes, executed letters of transmittal and other related documents should be directed to the exchange agent. Requests for assistance and for additional copies of this prospectus, the letter of transmittal and other related documents should be directed to the exchange agent.

EXCHANGE AGENT:

THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.

By Facsimile:

732-667-9408

Confirm by telephone:

315-414-3349

By Mail, Hand or Courier:

c/o The Bank of New York Mellon Corporation

Corporate Trust Operations—Reorganization Unit

111 Sanders Creek Parkway

East Syracuse, NY 13057

Attn: Dacia Brown-Jones

PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 20.Indemnification of Directors and Officers.

Insofar as indemnification for liabilities arising under the U.S. Securities Act of the 1933, as amended (or Securities Act), may be permitted to the registrant’s directors and officers pursuant to the following provisions or otherwise, the registrant has been advised that, although the validity and scope of the governing statute have not been tested in court, in the opinion of the U.S. Securities and Exchange Commission (or SEC), such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In addition, indemnification may be limited by state securities laws.

Sections 490.850-490.859 of the Iowa Business Corporation Act permit corporations organized thereunder to indemnify directors, officers, employees and agents against liability under certain circumstances. The Second Amended and Restated Articles of Incorporation (or Articles) and the Amended and Restated Bylaws (or Bylaws) of MidAmericanBerkshire Hathaway Energy Holdings Company provide for indemnification of directors, officers and employees to the full extent provided by the Iowa Business Corporation Act.

As permitted by Section 490.202 of the Iowa Business Corporation Act and Article VI of the Articles, no director shall be personally liable to MidAmericanBerkshire Hathaway Energy Holdings Company or its shareholders for money damages for any action taken, or any failure to take any action, as a director, except liability for any of the following: (1) the amount of a financial benefit received by a director to which the director is not entitled; (2) an intentional infliction of harm on the corporation or the shareholders; (3) a violation of Section 490.833 of the Iowa Business Corporation Act (relating to certain unlawful distributions to shareholders); (4) an intentional violation of criminal law; or (5) any other violation of Section 490.831 of the Iowa Business Corporation Act (Standards of Liability for Directors).

The Articles and Bylaws provide that if the proceeding for which indemnification is sought is by or in the right of the registrant, indemnification may be made only for reasonable expenses and may not be made in any proceeding in which the person is adjudged liable to the registrant. Further, any such person may not be indemnified in any proceeding that charges improper personal benefit to the person in which the person is adjudged to be liable.

The Articles and Bylaws allow the registrant to maintain liability insurance to protect itself and any director, officer, employee or agent against any expense, liability or loss whether or not the registrant would have the power to indemnify such person against such incurred expense, liability or loss. Pursuant to Section 490.857 of the Iowa Business Corporation Act, the Articles and Bylaws, the registrant maintains directors’ and officers’ liability insurance coverage.

The registrant may also enter into indemnification agreements with certain directors and officers to further assure such persons’ indemnification as permitted by Iowa law.

The rights to indemnification conferred on any person by the Articles and Bylaws are not exclusive of any right which any person may have or acquire under any statute, provision of the Articles, Bylaws, agreement or vote of shareholders or disinterested directors.

Item 21.Exhibits and Financial Statement Schedules.

(a) Exhibits

The exhibits listed on the accompanying Exhibit Index are filed as part of this prospectus.

II-1

Item 22.Undertakings.

The undersigned registrant hereby undertakes:

(a) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20% change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement;

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

(b) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initialbona fide offering thereof.

(c) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

The undersigned registrant hereby undertakes that, for the purposes of determining any liability under the Securities Act, each filing of the registrant’s annual report pursuant to Section 13(a) or 15(d) of the U.S. Securities Exchange Act of 1934, as amended (or Exchange Act) (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference into the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant, pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by any such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question of whether or not such indemnification is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

The undersigned registrant hereby undertakes that, for the purpose of determining liability under the Securities Act to any purchaser, each prospectus filed pursuant to Rule 424(b) as part of a registration statement relating to an offering, other than registration statements relying on Rule 430B or other than prospectuses filed in reliance on Rule 430A, shall be deemed to be part of and included in the registration statement as of the date it is first used after effectiveness. Notwithstanding the foregoing, no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated

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by reference into the registration statement or prospectus that is part of the registration statement will, as to a

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purchaser with a time of contract of sale prior to such first use, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement in any such document immediately prior to such date of first use.

The undersigned registrant hereby undertakes to respond to requests for information that is incorporated by reference into the prospectus pursuant to Items 4, 10(b), 11 or 13 of this Form, within one business day of receipt of such request, and to send the incorporated documents by first class mail or other equally prompt means. This includes information contained in documents filed subsequent to the effective date of the registration statement through the date of responding to the request.

The undersigned registrant hereby undertakes to supply by means of a post-effective amendment all information concerning a transaction, and the company being acquired involved therein, that was not the subject of and included in the registration statement when it became effective.

The undersigned registrant hereby undertakes that, for the purposes of determining liability of the registrant under the Securities Act to any purchaser in the initial distribution of the securities, in a primary offering of securities of the undersigned registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i) any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424;

(ii) any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by the undersigned registrant;

(iii) the portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and

(iv) any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.

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Pursuant to the requirements of the U.S. Securities Act, of 1933, as amended, the registrant has duly caused this Registration Statementregistration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Des Moines, State of Iowa, on January 13,December 12, 2014.

The undersigned officers and directors of MidAmericanBerkshire Hathaway Energy Holdings Company hereby severally constitute and appoint Douglas L. Anderson and Paul J. Leighton, and each of them, attorneys-in-fact for the undersigned, in any and all capacities, with the power of substitution, to sign any amendments to this registration statement (including post-effective amendments) and any subsequent registration statement for the same offering which may be filed under Rule 462(b) under the U.S. Securities Act of 1933, as amended, and to file the same with exhibits thereto and other documents in connection therewith, with the U.S. Securities and Exchange Commission, granting unto said attorneys-in-fact, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully and to all interests and purposes as he might or could do in person, hereby ratifying and confirming all that each said attorney-in-fact, or his substitute or substitutes, may do or cause to be done by virtue thereof.

Pursuant to the requirements of the U.S. Securities Act of 1933, as amended, this registration statement has been signed below by the following persons in the capacities and on the dates indicated.

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