Eversource Energy (ES) 424B5Prospectus supplement for primary offering

 Filed Pursuant to Rule 424(b)(5)​

 Registration No. 333-264278​

No dealer, salesperson or other person is authorized to give any information or to represent anything not contained in this prospectus supplement or the accompanying prospectus or any free writing prospectus authorized by us. This prospectus supplement and the accompanying prospectus are an offer to sell only the Notes, but only under circumstances and in jurisdictions where it is lawful to do so. The information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus is accurate only as of their respective dates. Our business, financial condition, results of operations and prospects may have changed since those dates.

We make statements in this prospectus supplement and the accompanying prospectus and in the documents we incorporate by reference that are statements concerning our expectations, beliefs, plans, objectives, goals, strategies, assumptions of future events, future financial performance or growth and other statements that are not historical facts. These statements are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. You can generally identify our forward- looking statements through the use of words or phrases such as “estimate,” “expect,” “anticipate,” “intend,” “plan,” “project,” “believe,” “forecast,” “should,” “could,” and other similar expressions. Forward-looking statements are based on the current expectations, estimates, assumptions or projections of management and are not guarantees of future performance. These expectations, estimates, assumptions or projections may vary materially from actual results. Accordingly, any such statements are qualified in their entirety by reference to, and are accompanied by, the following important factors that could cause our actual results to differ materially from those contained in our forward-looking statements, including, but not limited to:

cyberattacks or breaches, including those resulting in the compromise of the confidentiality of our proprietary information and the personal information of our customers,

disruptions in the capital markets or other events that make our access to necessary capital more difficult or costly,

changes in economic conditions, including impact on interest rates, tax policies, and customer demand and payment ability,

ability or inability to commence and complete our major strategic development projects and opportunities,

the ability to sell Eversource’s 50 percent interest in three offshore wind projects under development on the timeline we expect, to satisfy the investment tax credit qualifications related to the tax equity investment in the South Fork Wind project, and the ability of the Revolution Wind and Sunrise Wind projects to qualify for the investment tax credit adders, and to successfully rebid the Sunrise Wind OREC contract at an increased value,

acts of war or terrorism, physical attacks or grid disturbances that may damage and disrupt our electric transmission and electric, natural gas, and water distribution systems,

Other risk factors are detailed in reports we file with the Commission, and we encourage you to consult such disclosures.

All such factors are difficult to predict and contain uncertainties that may materially affect our actual results, many of which are beyond our control. You should not place undue reliance on the forward-looking statements, each of which speaks only as of the date on which such statement is made, and, except as

We estimate that the net proceeds from the sale of the Notes, after deducting the underwriting discount and our estimated expenses, will be approximately $988.3 million. We intend to use the net proceeds of the offering to repay a portion of our outstanding short-term debt. As of January 11, 2024, our outstanding short-term debt totaled approximately $1.79 billion with a weighted average interest rate of 5.54% per annum.

The 2027 Notes and the 2034 Notes are each a separate series of the Senior Notes described in the accompanying prospectus and will be issued under the Twenty-first Supplemental Indenture, to be dated as of January 1, 2024, between us and The Bank of New York Mellon Trust Company, N.A., formerly known as The Bank of New York Trust Company, N.A. (as successor trustee to The Bank of New York), as trustee (the “Trustee”), supplementing our Indenture with the Trustee, dated as of April 1, 2002 (the “Senior Note Indenture”), described in the accompanying prospectus. You should read the accompanying prospectus for a detailed summary of additional provisions of the Senior Notes, which includes the Notes, and of the Senior Note Indenture. The description of the Notes below supplements the description of the Senior Notes contained in the accompanying prospectus. If the descriptions are inconsistent, this prospectus supplement controls. The following summary and the description set forth in the accompanying prospectus do not purport to be complete and are subject to, and qualified in their entirety by, all provisions of the Senior Note Indenture. Capitalized terms used but not defined in this prospectus supplement have the meanings given to them in the accompanying prospectus.

The 2027 Notes will constitute the thirtieth series of our Senior Notes issued under our Senior Note Indenture. The 2034 Notes will constitute the thirty-first series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series A, Due 2012, in the aggregate principal amount of $263,000,000, which were issued on April 4, 2002 and repaid on April 2, 2012, constituted the first series of Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series B, Due 2008, in the aggregate principal amount of $150,000,000, which were issued on June 3, 2003 and repaid on June 2, 2008, constituted the second series of Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series C, Due 2013, in the aggregate principal amount of $250,000,000, which were issued on June 5, 2008 and repaid on June 3, 2013, constituted the third series of Senior Notes issued under our Senior Note Indenture. Our Floating Rate Notes, Series D, Due 2013, in the aggregate principal amount of $300,000,000, which were issued on March 22, 2012 and repaid on September 20, 2013, constituted the fourth series of Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series E, Due 2018, in the aggregate principal amount of $300,000,000, which were issued on May 13, 2013, and repaid on May 1, 2018, constituted the fifth series of Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series F, Due 2023, in the aggregate principal amount of $450,000,000, which were issued on May 13, 2013 and repaid on May 1, 2023, constituted the sixth series of Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series G, Due 2018, in the aggregate principal amount of $150,000,000, which were issued on January 15, 2015, and repaid on January 15, 2018, constituted the seventh series of Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series H, Due 2025, in the aggregate principal amount of $300,000,000, which were issued on January 15, 2015, constituted the eighth series of Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series I, Due 2021, in the aggregate principal amount of $450,000,000, which were issued on March 10, 2016 and January 8, 2018, and repaid on February 16, 2021, constituted the ninth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series J, Due 2026, in the aggregate principal amount of $250,000,000, which were issued on March 10, 2016, constituted the tenth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series K, Due 2022, in the aggregate principal amount of $750,000,000, which were issued on March 10, 2017 and October 5, 2017, and repaid on March 15, 2022, constituted the eleventh series of our Senior Notes issued under the Senior Note Indenture. Our Senior Notes, Series L, Due 2024, in the aggregate principal amount of $450,000,000, which were issued on October 5, 2017, constituted the twelfth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series M, Due 2028, in the aggregate principal amount of $450,000,000, which were issued on January 8, 2018, constituted the thirteenth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series N, Due 2023, in the aggregate principal amount of $400,000,000, which were issued on December 13, 2018 and repaid on December 1, 2023, constituted the fourteenth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series O, Due 2029, in the aggregate principal amount of $500,000,000, which were issued on December 13, 2018, constituted the fifteenth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series P, Due 2050, in the aggregate principal amount of $650,000,000, which were issued on January 10, 2020 and August 14, 2020, constituted the sixteenth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series Q, Due 2025, in the

aggregate principal amount of $300,000,000, which were issued on August 14, 2020, constituted the seventeenth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series R, Due 2030, in the aggregate principal amount of $600,000,000, which were issued on August 14, 2020, constituted the eighteenth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series S, Due 2031, in the aggregate principal amount of $350,000,000, which were issued on March 11, 2021, constituted the nineteenth series of our Senior Notes issued under our Senior Note Indenture. Our Floating Rate Senior Notes, Series T, Due 2023, in the aggregate principal amount of $350,000,000, which were issued on August 13, 2021 and repaid on August 15, 2023, constituted the twentieth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series U, Due 2026, in the aggregate principal amount of $300,000,000, which were issued on August 13, 2021, constituted the twenty-first series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series V, Due 2027, in the aggregate principal amount of $650,000,000, which were issued on February 25, 2022, constituted the twenty-second series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series W, Due 2032, in the aggregate principal amount of $650,000,000, which were issued on February 25, 2022, constituted the twenty-third series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series X, Due 2024, in the aggregate principal amount of $900,000,000, which were issued on June 27, 2022, constituted the twenty- fourth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series Y, Due 2027, in the aggregate principal amount of $600,000,000, which were issued on June 27, 2022, constituted the twenty-fifth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series Z, Due 2028, in the aggregate principal amount of $1,300,000,000, which were issued on March 6, 2023 and May 11, 2023, constituted the twenty-sixth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series AA, Due 2026, in the aggregate principal amount of $450,000,000, which were issued on May 11, 2023, constituted the twenty-seventh series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series BB, Due 2033, in the aggregate principal amount of $800,000,000, which were issued on May 11, 2023, constituted the twenty-eighth series of our Senior Notes issued under our Senior Note Indenture. Our Senior Notes, Series CC, Due 2029, in the aggregate principal amount of $800,000,000, which were issued on November 10, 2023, constituted the twenty-ninth series of our Senior Notes issued under our Senior Note Indenture.

We will issue the Notes in fully registered form in minimum denominations of $2,000 and integral multiples of $1,000 thereafter. The Bank of New York Mellon Trust Company, N.A., the Trustee under the Senior Note Indenture, will register transfers and exchanges of the Notes and will serve as paying agent for the Notes. Principal on the Notes will be payable at the Trustee’s Corporate Trust Office which, at the date hereof, is located at 500 Ross Street, 12th Floor, Pittsburgh, Pennsylvania 15262. We will initially issue the Notes in global form. Please refer to “— Global Securities” in this prospectus supplement and “Book- Entry; Delivery And Form; Global Securities” in the accompanying prospectus.

The 2027 Notes will bear interest at the rate of 5.00% per year. The 2034 Notes will bear interest at the rate of 5.50% per year. We will pay interest on the Notes semi-annually in arrears on January 1 and July 1 of each year (each, a “Note Interest Payment Date”), beginning on July 1, 2024, and ending on the applicable maturity date. Interest on the Notes shall be computed on the basis of a 360-day year consisting of twelve 30-day months and for any period less than a full month, on the basis of the actual number of days elapsed. If a Note Interest Payment Date or the maturity date of the Notes falls on a day that is not a business day, the payment of principal and interest will be made on the next succeeding business day (without any interest or other payment in respect of such delay).

Interest on the 2027 Notes will accrue from, and including, the date of original issuance of the 2027 Notes to, and excluding, the first Note Interest Payment Date and then from, and including, the immediately preceding Note Interest Payment Date to which interest has been paid or duly provided for to, but excluding, the next Note Interest Payment Date or the maturity date, as the case may be. In addition, principal and interest which is overdue shall bear interest at the rate of 5.00% per year for the 2027 Notes.

Interest on the 2034 Notes will accrue from, and including, the date of original issuance of the 2034 Notes to, and excluding, the first Note Interest Payment Date and then from, and including, the immediately preceding Note Interest Payment Date to which interest has been paid or duly provided for to, but excluding, the next Note Interest Payment Date or the maturity date, as the case may be. In addition, principal and interest which is overdue shall bear interest at the rate of 5.50% per year for the 2034 Notes.

We will pay the interest due on any Note Interest Payment Date or the maturity date to the person in whose name the Notes are registered at the close of business (i) on the business day prior to each Note Interest Payment Date or the maturity date if the Note remains in book-entry only form or (ii) on the fifteenth calendar day before each Note Interest Payment Date or the maturity date if the Note does not remain in book-entry only form.

When we use the term “business day,” we mean any day except a Saturday, a Sunday or a legal holiday in New York, New York or in Pittsburgh, Pennsylvania on which banking institutions are authorized or required by law, regulation or executive order to close.

Prior to the 2027 Note Maturity Date, we may redeem the 2027 Notes at our option, in whole or in part, at any time and from time to time, on not less than 10 nor more than 60 days’ prior notice mailed (or delivered by electronic transmission in accordance with the applicable procedures of DTC) to the holders of the 2027 Notes at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of:

Prior to the 2034 Notes Par Call Date (as defined below), we may redeem the 2034 Notes at our option, in whole or in part, at any time and from time to time, on not less than 10 nor more than 60 days’ prior written notice mailed (or delivered by electronic transmission in accordance with the applicable procedures of DTC) to the holders of the 2034 Notes at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of:

On or after the 2034 Notes Par Call Date, we may redeem the 2034 Notes at our option, in whole or in part, at any time and from time to time, at a redemption price equal to 100% of the principal amount of the 2034 Notes being redeemed plus accrued and unpaid interest thereon to, but excluding, the redemption date.

“2034 Notes Par Call Date” means October 1, 2033 (the date that is three months prior to the maturity date of the 2034 Notes).

“Treasury Rate” means, with respect to any redemption date, the yield determined by us in accordance with the following two paragraphs.

The Treasury Rate shall be determined by us after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third business day preceding the redemption date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as “Selected Interest Rates (Daily) — H.15” (or any successor designation or publication) (“H.15”) under the caption “U.S. government securities —  Treasury constant maturities — Nominal” ​(or any successor caption or heading) (“H.15 TCM”). In determining the Treasury Rate, we shall select: (1) the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to, in the case of the 2027 Notes, the 2027 Notes Maturity Date, or, in the case of the 2034 Notes, the 2034 Notes Par Call Date (the “Remaining Life”); or (2) if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields — one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life — and shall interpolate to, in the case of the 2027 Notes, the 2027 Notes Maturity Date, or, in the case of the 2034 Notes, the 2034 Notes Par Call Date on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the redemption date.

If on the third business day preceding the redemption date H.15 TCM is no longer published, we shall calculate the Treasury Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York City time, on the second business day preceding such redemption date of the United States Treasury security maturing on, or with a maturity that is closest to, in the case of the 2027 Notes, the 2027 Notes Maturity Date, or, in the case of the 2034 Notes, the 2034 Notes Par Call Date, as applicable. If there is no United States Treasury security maturing on, in the case of the 2027 Notes, the 2027 Notes Maturity Date, or, in the case of the 2034 Notes, the 2034 Notes Par Call Date but there are two or more United States Treasury securities with a maturity date equally distant from the 2027 Notes Maturity Date or the 2034 Notes Par Call Date, as applicable, one with a maturity date preceding the

The covenants set forth in the accompanying prospectus under “Description of Securities Registered —  Eversource Energy — Senior Notes — Limitation on Liens” and “Description of Securities Registered —  Eversource Energy — Senior Notes — Sale and Leaseback Transactions” have been made applicable to the Notes.

In order to facilitate the offering of the Notes, the representatives may engage in transactions that stabilize, maintain or otherwise affect the price of the Notes. Specifically, the representatives may overallot in connection with the offering of the Notes, creating a short position in such Notes for its own account. In addition, to cover overallotments or to stabilize the price of the Notes, the representatives may bid for, and purchase, Notes in the open market. Finally, the representatives may reclaim selling concessions allowed to an underwriter or a dealer for distributing the Notes in the offering, if it repurchases previously distributed Notes in transactions to cover syndicate short positions, in stabilization transactions or otherwise. Any of these activities may stabilize or maintain the market price for the Notes above independent market levels. The representatives are not required to engage in these activities and may end any of these activities at any time without notice. The representatives also may impose a penalty bid. Penalty bids permit the underwriters to reclaim a selling concession from a syndicate member when the representatives, in covering syndicate short positions or making stabilizing purchases, repurchase Notes originally sold by that syndicate member.

We estimate that our expenses in connection with the offer and sale of the Notes, excluding underwriting discounts, will be approximately $2,605,000 and will be payable by us.

We have agreed to indemnify the several underwriters against, or contribute to payments the underwriters may be required to make in respect of, certain liabilities, including liabilities under the Securities Act of 1933, as amended.

We expect to deliver the Notes against payment for the Notes on or about the date specified in the last paragraph of the cover page of this prospectus supplement, which will be the third business day following the date of this prospectus supplement. Under Rule 15c6-1 of the Securities Exchange Act, trades in the secondary market generally are required to settle in two business days, unless the parties to a trade expressly agree otherwise. Accordingly, purchasers who wish to trade the Notes on the date of this prospectus supplement will be required, by virtue of the fact that the Notes initially will settle in T+3, to specify alternative settlement arrangements to prevent a failed settlement. Purchasers of Notes who wish to trade Notes prior to the second business day preceding the settlement date should consult their own advisors.

The underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may include securities trading, commercial and investment banking, financial advisory, investment management, investment research, principal investment, hedging, financing and brokerage activities. The underwriters and certain of their affiliates have, from time to time, performed, and will continue to perform, various investment or commercial banking and financial advisory services for us and our affiliates in the ordinary course of business for which they have received and will receive customary compensation. An affiliate of one of the underwriters, BNY Mellon Capital Markets, LLC is acting as trustee for the Notes. Currently, certain of the underwriters, either directly or through affiliates, are lenders under certain Eversource Energy credit facilities.

In addition, in the ordinary course of their various business activities, the underwriters and their respective affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers, and such investment and securities activities may involve securities and/or instruments of ours and our affiliates. If any of the underwriters or their affiliates has a lending relationship with us, certain of these underwriters or their affiliates routinely hedge, and certain other of those underwriters or their affiliates may hedge, their credit exposure to us consistent with their customary risk management policies. Typically, these underwriters and their affiliates would hedge such exposure by entering into transactions which consist of either the purchase of credit default swaps or the creation of short positions in our securities, including potentially the Notes. Any such credit default swaps or short positions could adversely affect future trading prices of the Notes. The underwriters and their

This prospectus supplement, the accompanying prospectus or any other disclosure document (as defined in the Corporations Act 2001 (Cth) of Australia (the “Corporations Act”)) in relation to the Notes has not been or will not be lodged with the Australian Securities & Investments Commission (“ASIC”). This prospectus supplement and the accompanying prospectus have not been lodged with ASIC and is only directed to certain categories of exempt persons. Accordingly, if you receive this document in Australia:

The Notes may be sold in Canada only to purchasers purchasing, or deemed to be purchasing, as principal that are accredited investors, as defined in National Instrument 45-106 Prospectus Exemptions or subsection 73.3(1) of the Securities Act (Ontario), and are permitted clients, as defined in National Instrument 31-103 Registration Requirements, Exemptions and Ongoing Registrant Obligations. Any resale of the Notes must be made in accordance with an exemption from, or in a transaction not subject to, the prospectus requirements of applicable securities laws.

This prospectus supplement and the accompanying base prospectus have not been reviewed, approved or licensed by the Central Bank of the United Arab Emirates (the “UAE”), the Emirates Securities and Commodities Authority (the “SCA”) or any other relevant licensing authority in the UAE including any licensing authority incorporated under the laws and regulations of any of the free zones established and operating in the UAE including, without limitation, the Dubai Financial Services Authority (the “DFSA”), a regulatory authority of the Dubai International Financial Centre (the “DIFC”).

This prospectus supplement and the accompanying base prospectus are not intended to, and do not, constitute an offer, sale or delivery of shares or other securities under the laws of the UAE. Each underwriter has represented and agreed that the Notes have not been and will not be registered with the SCA or the UAE Central Bank, the Dubai Financial Market, the Abu Dhabi Securities Market or any other UAE regulatory authority or exchange.

The issue and/or sale of the Notes has not been approved or licensed by the SCA, the UAE Central Bank or any other relevant licensing authority in the UAE, and does not constitute a public offer of securities in the UAE in accordance with the Commercial Companies Law, Federal Law No. 1 of 2015 (as amended) or otherwise, does not constitute an offer in the UAE in accordance with the Board Decision No. 37 of 2012 Concerning the Regulation of Investment Funds (whether by a Foreign Fund, as defined therein, or otherwise), and further does not constitute the brokerage of securities in the UAE in accordance with the Board Decision No. 27 of 2014 Concerning Brokerage in Securities.

The Notes are not intended to be offered, sold or otherwise made available to and should not be offered, sold or otherwise made available to any retail investor in the United Kingdom (“UK”). For these purposes, a retail investor means a person who is one (or more) of: (i) a retail client, as defined in point (8) of Article 2 of Regulation (EU) No 2017/565 as it forms part of domestic law by virtue of the European Union (Withdrawal) Act 2018 (“EUWA”); (ii) a customer within the meaning of the provisions of the Financial Services and Markets Act 2000 (as amended, the “FSMA”) and any rules or regulations made under the FSMA to implement Directive (EU) 2016/97, where that customer would not qualify as a professional client, as defined in point (8) of Article 2(1) of Regulation (EU) No 600/2014 as it forms part of domestic law by virtue of the EUWA; or (iii) not a qualified investor as defined in Article 2 of Regulation (EU) 2017/1129 as it forms part of domestic law by virtue of the EUWA (the “UK Prospectus Regulation”).

Consequently, no key information document required by Regulation (EU) No 1286/2014 as it forms part of domestic law by virtue of the EUWA (the “UK PRIIPs Regulation”) for offering or selling the Notes or otherwise making them available to retail investors in the UK has been prepared and therefore offering or selling the Notes or otherwise making them available to any retail investor in the UK may be unlawful under the UK PRIIPs Regulation.

In the UK, this prospectus supplement and the accompanying prospectus are only being distributed to and is only directed at, and any offer subsequently made may only be directed at, persons who are “qualified investors” ​(as defined in the UK Prospectus Regulation) (i) who have professional experience in matters relating to investments falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (the “Order”) and/or (ii) who are high net worth companies, and other persons to whom it may lawfully be communicated, falling within Article 49(2)(a) through (d) of the Order (all such persons together being referred to as “relevant persons”). The Notes are only available to, and any invitation,

The Notes may not be offered or sold by means of any document other than (i) in circumstances which do not constitute an offer to the public within the meaning of the Companies Ordinance (Cap.32, Laws of Hong Kong), or (ii) to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap.571, Laws of Hong Kong) and any rules made thereunder, or (iii) in other circumstances which do not result in the document being a “prospectus” within the meaning of the Companies Ordinance (Cap.32, Laws of Hong Kong), and no advertisement, invitation or document relating to the Notes may be issued or may be in the possession of any person for the purpose of issue (in each case whether in Hong Kong or elsewhere), which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the laws of Hong Kong) other than with respect to Notes which are or are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) and any rules made thereunder.

The Notes have not been and will not be registered under the Financial Instruments and Exchange Law of Japan (the Financial Instruments and Exchange Law) and each underwriter has agreed that it will not offer or sell any Notes, directly or indirectly, in Japan or to, or for the benefit of, any resident of Japan (which term as used herein means any person resident in Japan, including any corporation or other entity organized under the laws of Japan), or to others for re-offering or resale, directly or indirectly, in Japan or to a resident of Japan, except pursuant to an exemption from the registration requirements of, and otherwise in compliance with, the Financial Instruments and Exchange Law and any other applicable laws, regulations and ministerial guidelines of Japan.

Where the Notes are subscribed or purchased under Section 275 of the SFA by a relevant person which is: (a) a corporation (which is not an accredited investor (as defined in Section 4A of the SFA)) the sole business of which is to hold investments and the entire share capital of which is owned by one or more individuals, each of whom is an accredited investor; or (b) a trust (where the trustee is not an accredited investor) whose sole purpose is to hold investments and each beneficiary of the trust is an individual who is an accredited investor, Securities (as defined in Section 2(1) of the SFA) or securities based derivatives contracts (as defined in Section 2(1) of the SFA) of that corporation or the beneficiaries’ rights and interest (howsoever described) in that trust shall not be transferred within six months after that corporation or that trust has acquired the Notes pursuant to an offer made under Section 275 of the SFA except: (1) to an institutional investor or to a relevant person defined in Section 275(2) of the SFA, or to any person arising from an offer referred to in Section 275(1A) or Section 276(4)(i)(B) of the SFA; (2) where no consideration is given for the transfer; (3) where the transfer is by operation of law; (4) as specified in Section 276(7) of the SFA; or (5) as specified in Regulation 37A of the Securities and Futures (Offers of Investments) (Securities and Securities-based Derivatives Contracts) Regulations 2018.

Any reference to the SFA is a reference to the Securities and Futures Act, Chapter 289 of Singapore and a reference to any term as defined in the SFA or any provision in the SFA is a reference to that term as modified or amended from time to time including by such of its subsidiary legislation as may be applicable at the relevant time.

Singapore SFA Product Classification — In connection with Section 309B of the SFA and the CMP Regulations 2018, unless otherwise specified before an offer of Notes, we have determined, and hereby notify all persons (including all relevant persons (as defined in Section 309A(1) of the SFA)) that the Notes are “prescribed capital markets products” ​(as defined in the Securities and Futures (Capital Markets Products) Regulations 2018) and Excluded Investment Products (as defined in MAS Notice SFA 04-N12: Notice on the Sale of Investment Products and MAS Notice FAA-N16: Notice on Recommendations on Investment Products).

This prospectus supplement and the accompanying prospectus are not intended to constitute an offer or solicitation to purchase or invest in the Notes. The Notes may not be publicly offered, directly or indirectly, in Switzerland within the meaning of the Swiss Financial Services Act (“FinSA”) and no application has or will be made to admit the Notes to trading on any trading venue (exchange or multilateral trading facility) in Switzerland. Neither this prospectus supplement, the accompanying prospectus nor any other offering or marketing material relating to the Notes constitutes a prospectus pursuant to the FinSA, and neither this prospectus supplement, the accompanying prospectus nor any other offering or marketing material relating to the Notes or the offering may be publicly distributed or otherwise made publicly available in Switzerland.

The Notes have not been and will not be registered with the Financial Supervisory Commission of Taiwan, the Republic of China (“Taiwan”), pursuant to relevant securities laws and regulations and may not be offered or sold in Taiwan through a public offering or in any manner which would constitute an offer within the meaning of the Securities and Exchange Act of Taiwan or would otherwise require registration with or the approval of the Financial Supervisory Commission of Taiwan. No person or entity in Taiwan has been authorized to offer or sell the Notes in Taiwan.

We make statements in this prospectus and in the documents we incorporate by reference that are statements concerning our expectations, beliefs, plans, objectives, goals, strategies, assumptions of future events, future financial performance or growth and other statements that are not historical facts. These statements are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. You can generally identify our forward-looking statements through the use of words or phrases such as “estimate,” “expect,” “anticipate,” “intend,” “plan,” “project,” “believe,” “forecast,” “should,” “could,” and other similar expressions. Forward-looking statements are based on the current expectations, estimates, assumptions or projections of management and are not guarantees of future performance. These expectations, estimates, assumptions or projections may vary materially from actual results. Accordingly, any such statements are qualified in their entirety by reference to, and are accompanied by, the following important factors that could cause our actual results to differ materially from those contained in our forward-looking statements, including, but not limited to:

cyberattacks or breaches, including those resulting in the compromise of the confidentiality of our proprietary information and the personal information of our customers,

disruptions in the capital markets or other events that make our access to necessary capital more difficult or costly,

the negative impacts of the novel coronavirus (COVID-19) pandemic, including any new or emerging variants, on our customers, vendors, employees, regulators, and operations,

changes in economic conditions, including impact on interest rates, tax policies, and customer demand and payment ability,

ability or inability to commence and complete our major strategic development projects and opportunities,

acts of war or terrorism, physical attacks or grid disturbances that may damage and disrupt our electric transmission and electric, natural gas, and water distribution systems,

actions or inaction of local, state and federal regulatory, public policy and taxing bodies,

substandard performance of third-party suppliers and service providers,

other presently unknown or unforeseen factors.

Other risk factors are detailed from time to time in reports filed by the Registrants with the SEC and we encourage you to consult such disclosures.

All such factors are difficult to predict, contain uncertainties that may materially affect our actual results and are beyond the control of the Registrants. You should not place undue reliance on the forward-looking statements, each speaks only as of the date on which such statement is made, and, except as required by the federal securities laws, the Registrants undertake no obligation to update any forward-looking statement or statements to reflect events or circumstances after the date on which such statement is made or to reflect the occurrence of unanticipated events. New factors emerge from time to time

Eversource Energy, a voluntary association and Massachusetts business trust, is headquartered in Boston, Massachusetts and Hartford, Connecticut and is a public utility holding company subject to the regulation of the Federal Energy Regulatory Commission (FERC) under the Public Utility Holding Company Act of 2005.

Eversource Energy is engaged primarily in the energy delivery business, providing franchised retail electric service to approximately 3.26 million customers in Connecticut, Massachusetts and New Hampshire through three wholly-owned subsidiaries, CL&P, NSTAR Electric and PSNH, each of which is doing business as Eversource Energy, franchised retail natural gas service to more than 887,000 residential, commercial and industrial customers in Connecticut and Massachusetts through three wholly-owned indirect subsidiaries, Eversource Gas Company of Massachusetts, NSTAR Gas Company and Yankee Gas Services Company, each of which is doing business as Eversource Energy, and water services to approximately 226,000 residential, commercial, industrial, municipal and fire protection and other customers, in 68 towns and cities in Connecticut, Massachusetts and New Hampshire through four separate regulated water utilities, Aquarion Water Company of Connecticut, Aquarion Water Company of Massachusetts, Aquarion Water Company of New Hampshire and Abenaki Water Company. A portion of the storage of natural gas supply for NSTAR Gas during the winter heating season is provided by Hopkinton LNG Corp., an indirect, wholly-owned subsidiary of Eversource Energy. Eversource Energy has a service company, Eversource Energy Service Company, which provides management and support services to Eversource Energy and its subsidiaries, including CL&P, NSTAR Electric and PSNH. Eversource Energy’s subsidiaries are regulated in virtually all aspects of their business by various federal and state agencies, including the SEC, the FERC, and various state and/or local regulatory authorities with jurisdiction over the industry and the service areas in which each company operates.

Eversource Energy also has an offshore wind business, which includes a 50 percent ownership interest in offshore wind projects that are being developed and constructed through a joint and equal partnership with Ørsted. Eversource Energy holds a 50 percent ownership interest in North East Offshore, LLC, which holds power purchase agreements (PPAs) and contracts for the Revolution Wind, South Fork Wind and Sunrise Wind projects, as well as offshore leases issued by the U.S. Bureau of Ocean Energy Management. This partnership also participates in new procurement opportunities for offshore wind energy in the Northeast U.S. The offshore leases include a 257 square-mile ocean lease off the coasts of Massachusetts and Rhode Island and a separate, adjacent 300 square-mile ocean lease located approximately 25 miles south of the coast of Massachusetts. In aggregate, these ocean lease sites jointly-owned by Eversource Energy and Ørsted could eventually develop at least 4,000 MW of clean, renewable offshore wind energy.

The principal executive office of Eversource Energy is located at 300 Cadwell Drive, Springfield, Massachusetts 01104. The general business offices of Eversource Energy are located at 800 Boylston Street, Boston, Massachusetts 02199 and 56 Prospect Street, Hartford, Connecticut 06103. Its telephone number is (800) 286-5000.

The Connecticut Light and Power Company, doing business as Eversource Energy (CL&P), a Connecticut corporation, is a wholly-owned subsidiary of Eversource Energy. CL&P is engaged in the purchase, transmission, delivery and sale of electricity to its residential, commercial and industrial customers. As of December 31, 2021, CL&P furnished retail franchise electric service to approximately 1.27 million customers in 149 cities and towns in Connecticut, covering an area of 4,400 square miles. CL&P does not own any electric generation facilities.

The principal executive and business offices of CL&P are located at 107 Selden Street, Berlin, Connecticut 06037, and its telephone number is (800) 286-5000.

NSTAR Electric Company, doing business as Eversource Energy (NSTAR Electric), a Massachusetts corporation, is a wholly-owned subsidiary of Eversource Energy. NSTAR Electric is engaged in the purchase,

The transfer agent, registrar, and dividend disbursement agent for a series of preferred shares will be named in a prospectus supplement. The registrar for preferred shares will send notices to shareholders of any meetings at which holders of the preferred shares have the right to elect Trustees or to vote on any other matter.

We may issue warrants for the purchase of preferred shares, common shares, or any combination thereof. Warrants may be issued independently or together with other securities and may be attached to or separate from any offered securities. Each series of warrants will be issued under a separate warrant agreement to be entered into between us and a bank or trust company, as warrant agent. The warrant agent will act solely as our agent in connection with the warrants and will not assume any obligation or relationship of agency or trust for us with any holders or beneficial owners of warrants.

This summary of certain provisions of the warrants is not complete. For the complete terms of the warrants and the warrant agreement, you should refer to the provisions of the warrant agreement that we will file with the SEC in connection with the offering of such warrants.

The applicable prospectus supplement will describe the following terms of any warrants in respect of which this prospectus is being delivered:

information with respect to book-entry procedures, if any;

if applicable, a discussion of any material United States Federal income tax considerations; and

any other terms of such warrants, including terms, procedures and limitations relating to the exchange and exercise of such warrants.

We and the warrant agent may amend or supplement the warrant agreement for a series of warrants without the consent of the holders issued thereunder to effect changes that are not inconsistent with the provisions of the warrants and that do not materially and adversely affect the interests of the holders of the warrants.

We may issue share purchase contracts, including contracts obligating holders to purchase from us, and us to sell to the holders, a specified number of common shares at a future date or dates. The price per common share and the number of common shares may be fixed at the time the share purchase contracts are issued or may be determined by reference to a specific formula set forth in the share purchase contracts. The share purchase contracts may be issued separately or as part of units consisting of a share purchase contract and beneficial interests in debt securities, preferred shares or debt obligations of third parties, including U.S.

The applicable prospectus supplement will describe the terms of the share purchase contracts or share purchase units, including, if applicable, collateral or depositary arrangements, relating to the share purchase contracts or share purchase units.

common shares, or the grant of rights or options on such shares, to our Trustees, directors, officers, or employees or those of a subsidiary of ours, if the issue or grant is approved by the holders of common shares at a meeting duly held for such purpose or is authorized by and consistent with a plan previously so approved by the holders of common shares;

common shares issued on the conversion of convertible securities, if the convertible securities were offered or issued to holders of common shares in satisfaction of their preemptive rights or were not subject to preemptive rights;

common shares and convertible securities offered to shareholders in satisfaction of their preemptive rights and not purchased by those shareholders;

common shares or convertible securities issued pursuant to a plan adjusting any rights to fractional shares or fractional interests in order to prevent the issue of fractional shares or fractional interests in these shares;

common shares or convertible securities issued in connection with a merger or consolidation or pursuant to an order of a court, unless such order provides otherwise;

common shares or convertible securities issued in a public offering or through an underwriting;

common shares or convertible securities held in our treasury.

breaches of such person’s duty of loyalty to us or our shareholders;

Another Massachusetts anti-takeover statute, Chapter 110D of the Massachusetts General Laws, regulates the acquisition of control shares. A control share acquisition occurs when an individual aggregates a number of shares which, when added to shares already owned, would allow the acquiring person to vote at least 20 percent of the Company’s shares. Under Chapter 110D, shares acquired in this type of a transaction would have no voting rights unless a majority of non-interested shareholders specifically voted to grant the acquiring person voting rights for these shares. In general, the acquiring person as well as our officers and employee-Trustees are not permitted to vote on whether these voting rights should be granted.

a redemption of, the Senior Notes or that otherwise protect the holders of the Senior Notes in the event that we incur substantial additional indebtedness, whether or not in connection with a change in control of us.

We shall also be required to deliver to the Senior Note Trustee certificates and opinions stating that such consolidation, merger, conveyance, sale or transfer comply with the Senior Note Indenture and all relevant conditions precedent have been satisfied. (Section 801)

The Senior Note Trustee may be removed at any time by an instrument or concurrent instruments in writing delivered to the Senior Note Trustee and us and signed by the holders, or their attorneys-in-fact, of at least a majority in principal amount of the then outstanding Senior Notes. In addition, under certain circumstances, we may remove the Senior Note Trustee upon notice to the Holder of each Senior Note outstanding and the Senior Note Trustee, and appointment of a successor Senior Note Trustee. (Section 610)

Each holder of CL&P Bonds issued after 2003 (including any CL&P Bonds offered by any prospectus supplement and any CL&P Bonds offered by any future prospectus), solely by virtue of its acquisition of such CL&P Bonds, including as an owner of a book-entry or other beneficial interest therein, will have and be deemed to have consented, without the need for any further action or consent by such holder, to the B Provisions. We presently do not expect to receive the requisite 100 percent consent for the B Provisions, and therefore do not expect the B Provisions to become effective, until 2024, when the last series of CL&P Bonds outstanding issued before 2004 mature.

Accordingly, presented below are summary descriptions of the CL&P Bonds and the CL&P Indenture — as now in effect and as they will be in effect following receipt of the requisite bondholder consent, when the B Provisions become effective.

THERE ARE MATERIAL DIFFERENCES BETWEEN THE CL&P INDENTURE AS NOW IN EFFECT AND AS IT WILL BE IN EFFECT WHEN THE B PROVISIONS BECOME EFFECTIVE, AND YOU ARE ADVISED TO CAREFULLY READ THE SUMMARIES BELOW TO UNDERSTAND THE IMPACT OF THE B PROVISIONS. THE SUMMARY DESCRIPTION OF THE PROVISIONS OF THE CL&P INDENTURE AND OF THE B PROVISIONS WHICH FOLLOWS DOES NOT PURPORT TO BE COMPLETE OR TO COVER ALL OF THE PROVISIONS THEREOF. COPIES OF THE CL&P INDENTURE, INCLUDING THE B PROVISIONS, ARE AVAILABLE FROM US AND REFERENCE IS MADE TO THE CL&P INDENTURE, INCLUDING THE B PROVISIONS. FOR A COMPLETE STATEMENT OF THE APPLICABLE PROVISIONS, THE CL&P INDENTURE, INCLUDING THE B PROVISIONS, IS INCLUDED AS AN EXHIBIT TO THE REGISTRATION STATEMENT OF WHICH THIS PROSPECTUS IS A PART.

The CL&P Bonds are to be issued only in the form of fully registered bonds without coupons in denominations of $1,000 or multiples thereof and may be presented for exchange for a like aggregate principal amount of the same series of CL&P Bonds of other authorized denominations and for transfer at the principal office of the CL&P Bond Trustee in New York City without payment in either case of any charge other than for any tax or other governmental charges required to be paid by us.

The B Provisions would continue the existing first mortgage lien of the CL&P Indenture, but would expand both the types of property excepted from the lien and the types of permitted liens. We believe that these changes will not have a material effect on the security afforded by the mortgage lien on the property subject thereto. However, the B Provisions also would exclude any generating properties from the lien of the CL&P Indenture. Although this is not significant at present because we own no generating properties, if any such properties are acquired or constructed in the future, after effectiveness of the B Provisions, such properties would not be subject to the lien of the CL&P Indenture unless we chose to take such action.

Unlike the current provisions of the CL&P Indenture, the B Provisions would permit us to issue certain debt other than CL&P Bonds that would be secured by liens on the mortgaged property that are equal with or prior to the lien of the CL&P Indenture. We believe that this change will not have a material

effect on the security provided by the CL&P Indenture, because we may only issue such equal or prior secured debt in an aggregate principal amount up to 3 percent of the sum of (1) the lesser of the depreciated cost or fair market value of our property then subject to the lien of the CL&P Indenture, plus (2) certain cash then on deposit with the CL&P Bond Trustee. This issuance requirement would not apply to our assumption of debt secured by a lien existing (or created concurrently) on property we acquire, and there would be no limit on the amount of equal or prior secured debt that we could so assume. However, the test for the issuance of additional CL&P Bonds, as described below under “— Issuance Test for New CL&P Bonds,” in effect, counts all outstanding equal or prior secured debt against our ability to issue additional CL&P Bonds.

terms of a particular series of CL&P Bonds. The CL&P Indenture requires us to deliver to the CL&P Bond Trustee an annual officer’s certificate as to compliance with certain provisions of the CL&P Indenture.

the title and series designation;

the aggregate principal amount and the limit, if any, on the aggregate principal amount or initial public offering price of the debt securities of that series;

any rate or rates (or method for establishing the rate or rates) at which the debt securities shall bear interest;

the date from which any interest shall accrue;

any interest payment dates;

the stated maturity date or dates on which principal is payable;

whether the debt securities are to be issued in global form;

any sinking fund requirements;

any provisions for redemption, and the redemption price or prices;

the denominations in which the debt securities shall be issuable;

whether the debt securities are denominated or payable in United States dollars or a foreign currency or units of two or more foreign currencies;

the place or places where payments on the debt securities shall be made and the debt securities may be presented for registration of transfer or exchange;

whether any of the debt securities will be subject to defeasance in advance of the date for redemption or the stated maturity date;

if other than the full principal amount, the portion of the principal amount of the debt securities payable upon acceleration of the maturity of the debt securities;

any index used to determine the amount of payment of principal of (and premium, if any) or interest on the debt securities;

the person to whom any interest on the debt securities of the series shall be payable if other than the registered holder;

any additional or different events of default that apply to debt securities of the series and any change in the right of the trustee or the required holders of those debt securities to declare the principal thereof due and payable;

We may issue debt securities as “original issue discount securities,” which bear either no interest or interest at a rate that at the time of issuance is below market rates. These securities will be sold at a substantial discount below their principal amount. In the event that the maturity of an original issue discount security is accelerated, the amount payable to the holder upon acceleration will be determined in accordance with the terms of that security and the NSTAR Electric Indenture, but will be an amount less than the amount payable at the stated maturity of the principal of the security. The prospectus supplement will describe special federal income tax and other considerations relating to original issue discount securities.

The covenants contained in the NSTAR Electric Indenture and the debt securities will not protect holders in the event of a sudden decline in our creditworthiness that might result from a recapitalization, restructuring, or other highly leveraged transaction.

reduce the amount of principal of an original issue discount security payable upon acceleration of its maturity;

the PSNH Indenture. If there is any inconsistency between the information in this prospectus and the prospectus supplement, you should rely on the information in the prospectus supplement.

Unless we indicate otherwise in the applicable prospectus supplement, The Depository Trust Company (DTC), New York, New York, will act as securities depository for the securities. The securities will be issued as fully-registered securities registered in the name of Cede & Co., DTC’s partnership nominee, or such other name as may be requested by an authorized representative of DTC. One fully-registered certificate will be issued for each issue of securities, each in the aggregate principal amount of any such issue, and will be deposited with DTC. If, however, the aggregate principal amount of any issue exceeds $500 million, one certificate will be issued with respect to each $500 million of principal amount, and an additional certificate will be issued with respect to any remaining principal amount of any such issue.

DTC, the world’s largest securities depository, 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 Securities Exchange Act of 1934. DTC holds and provides asset servicing for issues of U.S. and non-U.S. equity issues, corporate and municipal debt issues and money market instruments that DTC’s participants (Direct Participants) deposit with DTC. DTC also facilitates the post-trade settlement among Direct Participants of sales and other securities transactions in deposited securities, through electronic computerized book-entry transfers and pledges between Direct Participants’ accounts. This eliminates the need for physical movement of securities certificates. Direct Participants include both U.S. and non-U.S. securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations. DTC is a wholly-owned subsidiary of The Depository Trust & Clearing Corporation (DTCC). DTCC is the holding company for DTC, National Securities Clearing Corporation and Fixed Income Clearing Corporation, all of which are registered clearing agencies. DTCC is owned by the users of its regulated subsidiaries. Access to the DTC system is also available to others such as both U.S. and non-U.S. securities brokers and dealers, banks, trust companies and clearing corporations that clear through or maintain a custodial relationship with a Direct Participant, either directly or indirectly (Indirect Participants). The DTC Rules applicable to its Participants are on file with the SEC. More information about DTC can be found at www.dtcc.com. Information on www.dtcc.com is not incorporated by reference in this prospectus

Purchases of securities under the DTC system must be made by or through Direct Participants, which will receive a credit for the securities on DTC’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 DTC of their purchase. Beneficial Owners are, however, 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 securities deposited by Direct Participants with DTC are registered in the name of DTC’s partnership nominee, Cede & Co., or such other name as may be requested by an authorized representative of DTC. The deposit of securities with DTC and their registration in the name of Cede & Co. or such other DTC nominee do not effect any change in beneficial ownership. DTC has no knowledge of the actual Beneficial Owners of the securities; DTC’s records reflect only the identity of the Direct Participants to whose accounts such securities 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 DTC 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. Beneficial Owners of securities may wish to take certain steps to augment the transmission to them of notices of significant events with respect to the securities, such as redemptions, tenders, defaults, and proposed amendments to the security documents. For example, Beneficial Owners of securities may wish to ascertain that the nominee holding the securities for their benefit has agreed to obtain

and transmit notices to Beneficial Owners. In the alternative, Beneficial Owners may wish to provide their names and addresses to the registrar and request that copies of notices be provided directly to them.

We may sell securities through one or more underwriters or dealers, directly to one or more purchasers, in a rights offering, in “at-the-market” offerings, within the meaning of Rule 415(a)(4) of the Securities Act of 1933, as amended (Securities Act), to or through a market maker or into an existing trading market or an exchange or otherwise, through agents, pursuant to forward contracts or through a combination of any of these sale methods, or through any other methods described in a prospectus supplement. The prospectus supplement relating to the securities being offered will set forth the terms of the offering and the method of distribution, including:

We may distribute the securities offered under this prospectus from time to time in one or more transactions at a fixed price or prices, which may be changed, at prevailing markets prices or at prices determined as the prospectus supplement specifies. We may sell securities through forward contracts or similar arrangements.

Securities may be offered to the public either through underwriting syndicates represented by one or more managing underwriters or directly by one or more firms acting as underwriters. If we use underwriters for a sale of securities, we will enter into an underwriting agreement with the underwriters at the time of sale of those securities. Unless we inform you otherwise in a prospectus supplement, the obligations of the underwriters to purchase the offered securities will be subject to certain conditions and the underwriters will be obligated to purchase all of the offered securities if any are purchased. The underwriters will acquire the securities for their own account. The underwriters may resell the securities in one or more transactions at a fixed public offering price, at market prices prevailing at the time of sale, at prices related to such prevailing market prices or at negotiated prices. The underwriters may change from time to time any initial public offering price and any discounts or concessions allowed or re-allowed or paid to dealers. Only those underwriters identified in the prospectus supplement are deemed to be underwriters in connection with the securities offered in the prospectus supplement.

If we use dealers in a sale, unless we inform you otherwise in a prospectus supplement, we will sell the securities to the dealers as principals.

The dealers may then resell such securities to the public at varying prices that they determine at the time of resale.

We may sell the securities directly. In this case, no underwriters or agents would be involved. We may also sell the securities through agents designated from time to time. In the prospectus supplement, we will name any agent involved in the offer or sale of the offered securities, and we will describe any commissions payable to the agent. Unless we inform you otherwise in the prospectus supplement, any agent will agree to use its reasonable best efforts to solicit purchases for the period of its appointment.

We may sell the securities directly to institutional investors or others who may be deemed to be underwriters within the meaning of the Securities Act with respect to any sale of those securities. We will describe the terms of any sales of these securities in the prospectus supplement.

In connection with the sale of securities, underwriters, dealers or agents may be deemed to have received compensation from us in the form of underwriting discounts or commissions and also may receive commissions from securities purchasers for whom they may act as agent.

Underwriters may sell the securities to or through dealers, and such dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters or commissions from the purchasers for whom they may act as agent. Any underwriting or other compensation which we pay to underwriters or agents in connection with the securities offering, and any discounts, concessions or commissions which underwriters allow to dealers, will be set forth in the applicable prospectus supplement.

Underwriters, dealers and agents participating in the securities distribution may be deemed to be underwriters, and any discounts and commissions they receive and any profit they realize on the resale of the securities may be deemed to be underwriting discounts and commissions under the Securities Act. Underwriters, and their controlling persons, and agents may be entitled, under agreements we enter into with them, to indemnification against certain civil liabilities, including liabilities under the Securities Act. Some of the underwriters, dealers or agents and some of their affiliates who participate in the securities distribution may engage in other transactions with, and perform other services for, us and our subsidiaries or affiliates in the ordinary course of business.

In order to facilitate an offering of securities, persons participating in the offering may engage in transactions that stabilize, maintain or otherwise affect the price of the offered securities. Such transactions, if commenced, may be discontinued at any time. If any such activities will occur, they will be described in the applicable prospectus supplement.

We may enter into derivative transactions with third parties, or sell securities not covered by this prospectus to third parties in privately negotiated transactions. If the applicable prospectus supplement indicates, in connection with those derivatives, the third parties may sell securities covered by this prospectus and the applicable prospectus supplement, including in short sale transactions. If so, the third party may use securities pledged by us or others to settle those sales or to close out any related open borrowings of shares, and may use securities received from us in settlement of those derivatives to close out any related open borrowings of shares. The third party in such sale transactions will be an underwriter and will be identified in the applicable prospectus supplement.

Unless otherwise noted in the applicable prospectus supplement, legal opinions relating to the validity of the securities will be given by Ropes & Gray LLP, Boston, Massachusetts and Kerry J. Tomasevich, Esq., Assistant General Counsel of Eversource Energy Service Company and Assistant Secretary of Eversource Energy. We currently anticipate that Choate, Hall & Stewart LLP, Boston, Massachusetts, will pass on certain matters with respect to the securities registered for any underwriters, agents or dealers.

The financial statements of Eversource Energy incorporated by reference in this Prospectus, and the effectiveness of Eversource Energy’s internal control over financial reporting have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports. Such financial statements are incorporated by reference in reliance upon the reports of such firm given upon their authority as experts in accounting and auditing.

The financial statements of The Connecticut Light and Power Company incorporated by reference in this Prospectus, have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report. Such financial statements are incorporated by reference in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.

The financial statements of NSTAR Electric Company incorporated by reference in this Prospectus, have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report. Such financial statements are incorporated by reference in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.

The financial statements of Public Service Company of New Hampshire and subsidiary incorporated by reference in this Prospectus, have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report. Such financial statements are incorporated by reference in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.