FORM10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THESECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period EndedJune 30, 2025 or EVERSOURCE ENERGY(aMassachusettsvoluntary association)300 Cadwell Drive,Springfield,Massachusetts01104Telephone: (800)286-5000Commission File Number:001-05324I.R.S. Employer Identification No.04-2147929 THE CONNECTICUT LIGHT AND POWER COMPANY(aConnecticutcorporation) 107 Selden Street,Berlin,Connecticut06037-1616Telephone: (800)286-5000Commission File Number:000-00404I.R.S. Employer Identification No.06-0303850 NSTAR ELECTRIC COMPANY(aMassachusettscorporation) 800 Boylston Street,Boston,Massachusetts02199Telephone: (800)286-5000Commission File Number:001-02301I.R.S. Employer Identification No.04-1278810 PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE(aNew Hampshirecorporation) Energy Park780 North Commercial Street,Manchester,New Hampshire03101-1134Telephone: (800)286-5000Commission File Number:001-06392I.R.S. Employer Identification No.02-0181050 Indicate by check mark whether the registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that theregistrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. Indicate by check mark whether the registrants have submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12months (or for such shorter period that the registrants were required to submit such files). Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large acceleratedfiler,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.☒Accelerated☐☐☐☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section13(a) of the Exchange Act.¨ Indicate by check mark whether the registrants are shell companies (as defined in Rule 12b-2 of the Exchange Act): Eversource EnergyThe Connecticut Light and Power CompanyNSTAR Electric CompanyPublic Service Company of New Hampshire Indicate the number of shares outstanding of each of the registrant's classes of common stock, as of the latest practicable date.Company - Class of Stock Outstanding as of July 31, 2025371,115,181shares6,035,205shares200shares301shares Eversource Energy Common Shares, $5.00 par valueThe Connecticut Light and Power Company Common Stock, $10.00 par valueNSTAR Electric Company Common Stock, $1.00 par valuePublic Service Company of New Hampshire Common Stock, $1.00 par value Eversource Energy holds all of the6,035,205shares,200shares, and301shares of the outstanding common stock of The Connecticut Light and Power Company, NSTAR Electric Company, and Public Service Company ofNew Hampshire, respectively. Eversource Energy, The Connecticut Light and Power Company, NSTAR Electric Company, and Public Service Company of New Hampshire each separately file this combined Form 10-Q.Information contained hereinrelating to any individual registrant is filed by such registrant on its own behalf.Each registrant makes no representation as to information relating to the other registrants. GLOSSARY OF TERMS EVERSOURCE ENERGY AND SUBSIDIARIESTHE CONNECTICUT LIGHT AND POWER COMPANYNSTAR ELECTRIC COMPANY AND SUBSIDIARYPUBLIC SERVICE COMPANY OF NEW HAMPSHIRE AND SUBSIDIARIES EVERSOURCE ENERGY AND SUBSIDIARIESTHE CONNECTICUT LIGHT AND POWER COMPANYNSTAR ELECTRIC COMPANY AND SUBSIDIARYPUBLIC SERVICE COMPANY OF NEW HAMPSHIRE AND SUBSIDIARIES COMBINED NOTES TO CONDENSED FINANCIAL STATEMENTS (Unaudited) Refer to the Glossary of Terms included in this combined Quarterly Report on Form 10-Q for abbreviations and acronyms used throughout the combined notes to the unaudited condensed financial statements. 1.SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES A.Basis of PresentationEversource Energy is a public utility holding company primarily engaged, through its wholly-owned regulated utility subsidiaries, in the energy delivery business.Eversource Energy's wholly-owned regulated utility subsidiaries consist of CL&P, NSTAR Electric and PSNH (electric utilities), Yankee Gas, NSTAR Gas and EGMA (natural gas utilities), and Aquarion (water utilities). Eversource provides energy delivery and/or waterservice to approximately4.6million electric, natural gas and water customers throughtwelveregulated utilities in Connecticut, Massachusetts and New Hampshire. The unaudited condensed consolidated financial statements of Eversource, NSTAR Electric and PSNH include the accou