NSARP / NSTAR Electric Company - Preferred Security - SEC फाइलिंग, वार्षिक रिपोर्ट, प्रॉक्सी स्टेटमेंट

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

EVERSOURCE ENERGY Q2 2025 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The fir

Exhibit 99.3 EVERSOURCE ENERGY Q2 2025 EARNINGS REPORT August 1, 2025 EVERSOURCE ENERGY Q2 2025 EARNINGS REPORT Exhibit 99.3 EVERSOURCE ENERGY Q2 2025 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The first half and second quarte

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended June 30, For the Six Months Ended June 30, (Thousands of Dollars, Except Share Information) 2025 2024 2025 2024 Operating Revenues $ 2,838,068 $ 2,533,522 $ 6,956,423 $ 5,866,097 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 818,747 841,43

Eversource Energy Reports Second Quarter 2025 Results

Exhibit 99.1 Eversource Energy Reports Second Quarter 2025 Results HARTFORD, Conn. and BOSTON, Mass. (July 31, 2025) – Eversource Energy (NYSE: ES) today reported earnings of $352.7 million, or $0.96 per share, for the second quarter of 2025, compared with earnings of $335.3 million, or $0.95 per share, for the second quarter of 2024. For the first half of 2025, Eversource Energy reported earnings

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2025 Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massachusetts volu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

DECLARATION OF TRUST EVERSOURCE ENERGY Dated January 15, 1927 AS AMENDED February 20, 1935 February 21, 1940 February 25, 1955 February 27, 1959 February 28, 1962 March 18, 1964 November 22, 1965 April 22, 1969 April 28, 1970 April 24, 1973 April 25,

Exhibit 3.1 DECLARATION OF TRUST OF EVERSOURCE ENERGY Dated January 15, 1927 AS AMENDED February 20, 1935 February 21, 1940 February 25, 1955 February 27, 1959 February 28, 1962 March 18, 1964 November 22, 1965 April 22, 1969 April 28, 1970 April 24, 1973 April 25, 1978 May 19, 1987 May 24, 1988 May 13, 2003 May 10, 2005 April 29,2015 May 3, 2017 May 1, 2025 DECLARATION OF TRUST OF EVERSOURCE ENER

Eversource Energy Reports First Quarter 2025 Results

Exhibit 99.1 Eversource Energy Reports First Quarter 2025 Results HARTFORD, Conn. and BOSTON, Mass. (May 1, 2025) – Eversource Energy (NYSE: ES) today reported earnings of $550.8 million, or $1.50 per share, in the first quarter of 2025, compared with earnings of $521.8 million, or $1.49 per share, in the first quarter of 2024. Also today, the Eversource Energy Board of Trustees approved a common

Regulation FD Disclosure, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Results of Operations and Financial Condition, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2025 Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massachusetts volunt

EVERSOURCE ENERGY Q1 2025 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The fir

Exhibit 99.3 EVERSOURCE ENERGY Q1 2025 EARNINGS REPORT May 2, 2025 EVERSOURCE ENERGY Q1 2025 EARNINGS REPORT Exhibit 99.3 EVERSOURCE ENERGY Q1 2025 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The first quarters 2025 and 2024 ea

The Commonwealth of Massachusetts Secretary of the Commonwealth One Ashburton Place, Boston, MA 02108 CERTIFICATE OF AMENDMENT TO THE DECLARATION OF TRUST OF EVERSOURCE ENERGY (Pursuant to Massachusetts General Laws, Chapter 182, Section 2)

Exhibit 3.1 The Commonwealth of Massachusetts Secretary of the Commonwealth One Ashburton Place, Boston, MA 02108 CERTIFICATE OF AMENDMENT TO THE DECLARATION OF TRUST OF EVERSOURCE ENERGY (Pursuant to Massachusetts General Laws, Chapter 182, Section 2) We, the undersigned, being a majority of the Trustees and the Secretary of Eversource Energy, a Massachusetts voluntary association organized under

EX-99.2

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended March 31, (Thousands of Dollars, Except Share Information) 2025 2024 Operating Revenues $ 4,118,355 $ 3,332,575 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 1,340,337 1,235,956 Operations and Maintenance 487,451 462,964 Depreciation 379,5

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 EVERSOURCE ENERGY Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Debt Eversource Energy Senior Notes 457(r) 0.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM T-1

EX-25.1(B) 8 tm2511144d2ex25-1b.htm EXHIBIT 25.1(B) Exhibit 25.1(B) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) DEUTSCHE BANK TRUST COMPANY AMERICAS (formerly BAN

As filed with the Securities and Exchange Commission on April 3, 2025

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on April 3, 2025 Registration Nos.

securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to

Exhibit 25.1(D) securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2)¨ U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTE

Exhibit 25.1(A) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) ¨ THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTE

Exhibit 25.1(C) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) ¨ THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter)

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 26, 2025 NSTAR ELECTRIC COMPANY (Exact name of registrant as specified in its charter) Massachusetts 1-02301 04-1278810 (State or other jurisdiction of organization) (Commiss

NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 5.20% DEBENTURE DUE 2035

Exhibit 4.2 REGISTERED REGISTERED No. X-1 CUSIP 67021C AW7 ISIN NO. US67021CAW73 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $ STATED MATURITY: march 1, 2035 INTEREST PAYMENT DATES: march 1 AND September 1 REGULAR RECORD DATES: February 15 OR August 15 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 5.20% DEBENTURE DUE 2035 T

NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT

Exhibit 1.2 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT February 24, 2025 Goldman Sachs & Co. LLC 200 West Street New York, New York 10282 Mizuho Securities USA LLC 1271 Avenue of the Americas New York, New York 10020 Citigroup Global Markets Inc. 388 Greenwich Street New York, New York 10013 J.P. Morgan Securities LLC 383 Madison Avenue New Yo

NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT

Exhibit 1.1 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT February 24, 2025 Goldman Sachs & Co. LLC 200 West Street New York, New York 10282 Mizuho Securities USA LLC 1271 Avenue of the Americas New York, New York 10020 BNY Mellon Capital Markets, LLC 240 Greenwich Street, 3W New York, New York 10286 PNC Capital Markets LLC 300 Fifth Avenue, 10th

NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 4.85% DEBENTURE DUE 2030

Exhibit 4.1 REGISTERED REGISTERED No. X-1 CUSIP 67021C AX5 ISIN NO. US67021CAX56 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $ STATED MATURITY: march 1, 2030 INTEREST PAYMENT DATES: march 1 AND September 1 REGULAR RECORD DATES: February 15 OR August 15 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 4.85% DEBENTURE DUE 2030 T

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 NSTAR ELECTRIC CO Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Debt 4.

$800,000,000 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY $400,000,000 4.85% Debentures due 2030 $400,000,000 5.20% Debentures due 2035

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-264278-02 PROSPECTUS SUPPLEMENT (To Prospectus dated April 13, 2022) $800,000,000 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY $400,000,000 4.85% Debentures due 2030 $400,000,000 5.20% Debentures due 2035 NSTAR Electric Company, doing business as Eversource Energy, is offering $400,000,000 aggregate principal a

NSTAR Electric Company doing business as Eversource Energy

Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-264278-02 February 24, 2025 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Security: $400,000,000 5.20% Debentures due 2035 Principal Amount: $400,000,000 Maturity Date: March 1, 2035 Coupon: 5.20% Benchmark Treasury: 4.625% due F

SUBJECT TO COMPLETION, DATED FEBRUARY 24, 2025

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

NSTAR Electric Company doing business as Eversource Energy

Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-264278-02 February 24, 2025 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Security: $400,000,000 4.85% Debentures due 2030 Principal Amount: $400,000,000 Maturity Date: March 1, 2030 Coupon: 4.85% Benchmark Treasury: 4.250% due J

Eversource Energy Insider Trading Policy

Exhibit 19 Eversource Energy Insider Trading Policy Introduction Eversource Energy and its subsidiaries (collectively, the “Company”) has adopted this Insider Trading Policy (the “Policy”) to help its Trustees, officers and employees comply with applicable securities laws.

SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS

Exhibit 10.2 SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS The Compensation Committee periodically reviews the compensation of our non-employee Trustees and, when it deems appropriate and upon consultation with the Committee’s independent compensation consultant, recommends adjustments to be approved by the Board of Trustees. The Compensation Committee recommends to the Board compensation for the T

Subsidiaries of the Registrants as of February 14, 2025 (1) State of Incorporation The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource Energy Service Company CT Eversource Energy Transmission V

Exhibit 21 Subsidiaries of the Registrants as of February 14, 2025 (1) State of Incorporation The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource Energy Service Company CT Eversource Energy Transmission Ventures, Inc.

Eversource Energy Executive Clawback Policy

Exhibit 97 Eversource Energy Executive Clawback Policy The Board of Trustees (the Board) of Eversource Energy (the Company), in order to continue to maintain the best interests of the Company and its shareholders, is adopting this revised Clawback Policy (the Policy), which provides for the recovery of erroneously awarded incentive-based compensation in the event of an Accounting Restatement (as defined below).

Registrant; State of Incorporation; Address; Telephone Number; Commission File Number; and I.R.S. Employer Identification No. EVERSOURCE ENERGY (a Massachusetts voluntary association) 300 Cadwell Drive, Springfield, Massachusetts 01104 Telephone: (80

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone Numb

EVERSOURCE ENERGY YEAR END 2024 EARNINGS REPORT Safe Harbor Statement All per-share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The e

EVERSOURCE ENERGY YEAR END 2024 EARNINGS REPORT February 12, 2025 EVERSOURCE ENERGY YEAR END 2024 EARNINGS REPORT Exhibit 99.

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME/(LOSS) (Unaudited) For the Three Months Ended December 31, (Thousands of Dollars, Except Share Information) 2024 2023 Operating Revenues $ 2,971,488 $ 2,694,238 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 740,832 935,329 Operations and Maintenance 575,100 513,141 Depreciation 372,853 3

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 11, 2025 Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massachusetts

Eversource Energy Reports Full-Year & Fourth Quarter 2024 Results

Exhibit 99.1 Eversource Energy Reports Full-Year & Fourth Quarter 2024 Results HARTFORD, Conn. and BOSTON, Mass. (February 11, 2025) – Eversource Energy (NYSE: ES) today reported full-year 2024 earnings of $811.7 million, or $2.27 per share, compared with a full-year 2023 loss of $(442.2) million, or $(1.26) per share. Eversource also reported fourth quarter 2024 earnings of $72.5 million, or $0.2

EVERSOURCE ENERGY EVERSOURCE ENERGY 2024 EEI FINANCIAL CONFERENCE CUSTOMER COMMUNITY FINANCIAL EMPLOYEE CLEAN ENERGY RELIABILITY

Exhibit 99.1 EVERSOURCE ENERGY EVERSOURCE ENERGY 2024 EEI FINANCIAL CONFERENCE CUSTOMER COMMUNITY FINANCIAL EMPLOYEE CLEAN ENERGY RELIABILITY EVERSOURCE ENERGY Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings discussion includes financ

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2024 Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massachusetts v

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2024 or ☐ TRANSITION REPORT PURSU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telep

Exhibit 4, Eversource Form 10-Q filed on November 6, 2024

Exhibit 4 THIRD AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of October 11, 2024 by and among EVERSOURCE ENERGY, AQUARION WATER COMPANY OF CONNECTICUT, AND, EACH DOING BUSINESS AS EVERSOURCE ENERGY, NSTAR GAS COMPANY, THE CONNECTICUT LIGHT AND POWER COMPANY, PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE, YANKEE GAS SERVICES COMPANY, and EVERSOURCE GAS COMPANY OF MASSACHUSETTS, as the Borrowers, BANK OF AMERICA, N.

Exhibit 4, Eversource Form 10-Q filed on November 6, 2024

Exhibit 4 SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of October 11, 2024 by and among NSTAR ELECTRIC COMPANY (DOING BUSINESS AS EVERSOURCE ENERGY), as the Borrower, BARCLAYS BANK PLC, as Administrative Agent and Swing Line Lender, and THE LENDERS PARTY HERETO BOFA SECURITIES, INC.

EVERSOURCE ENERGY Q3 2024 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The ear

Exhibit 99.3 EVERSOURCE ENERGY Q3 2024 EARNINGS REPORT EVERSOURCE ENERGY Q3 2024 EARNINGS REPORT NOVEMBER 5, 2024 CUSTOMER COMMUNITY FINANCIAL EMPLOYEE CLEAN ENERGY RELIABILITY Exhibit 99.3 EVERSOURCE ENERGY Q3 2024 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are com

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF (LOSS)/INCOME (Unaudited) For the Three Months Ended September 30, For the Nine Months Ended September 30, (Thousands of Dollars, Except Share Information) 2024 2023 2024 2023 Operating Revenues $ 3,063,224 $ 2,791,482 $ 8,929,321 $ 9,216,467 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmiss

Eversource Energy Reports Third Quarter 2024 Results

Exhibit 99.1 Eversource Energy Reports Third Quarter 2024 Results HARTFORD, Conn. and BOSTON, Mass. (November 4, 2024) – Eversource Energy (NYSE: ES) today reported a loss of $(118.1) million, or $(0.33) per share, for the third quarter of 2024, compared with earnings of $339.7 million, or $0.97 per share, for the third quarter of 2023. Eversource Energy earnings totaled $739.1 million, or $2.08 p

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2024 Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massachusetts v

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended June 30, For the Six Months Ended June 30, (Thousands of Dollars, Except Share Information) 2024 2023 2024 2023 Operating Revenues $ 2,533,522 $ 2,629,342 $ 5,866,097 $ 6,424,985 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 841,431 1,161,

EVERSOURCE ENERGY Q2 2024 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Ev ersource Energy. The ea

Exhibit 99.3 EVERSOURCE ENERGY Q2 2024 EARNINGS REPORT EVERSOURCE ENERGY Q2 2024 EARNINGS REPORT AUGUST 1, 2024 CUSTOMER COMMUNITY FINANCIAL EMPLOYEE CLEAN ENERGY RELIABILITY Exhibit 99.3 EVERSOURCE ENERGY Q2 2024 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are commo

Eversource Energy Reports Second Quarter 2024 Results

Exhibit 99.1 Eversource Energy Reports Second Quarter 2024 Results HARTFORD, Conn. and BOSTON, Mass. (July 31, 2024) – Eversource Energy (NYSE: ES) today reported GAAP earnings of $335.3 million, or $0.95 per share, for the second quarter of 2024, compared with earnings of $15.4 million, or $0.04 per share, for the second quarter of 2023. For the first half of 2024, Eversource Energy reported GAAP

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2024 (July 31, 2024) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Ma

Exhibit 4.1, NSTAR Electric Company Current Report on Form

Exhibit 4.1 REGISTERED REGISTERED No. X-1 CUSIP 67021C AV9 ISIN NO. US67021CAV90 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $ STATED MATURITY: JUNE 1, 2034 INTEREST PAYMENT DATES: JUNE 1 AND DECEMBER 1 REGULAR RECORD DATES: MAY 15 OR NOVEMBER 15 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 5.40% DEBENTURE DUE 2034 THIS SE

NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT

Exhibit 1.1 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT May 20, 2024 BofA Securities, Inc. One Bryant Park New York, New York 10036 Mizuho Securities USA LLC 1271 Avenue of the Americas New York, New York 10020 PNC Capital Markets LLC 300 Fifth Avenue, 10th Floor Pittsburgh, Pennsylvania 15222 RBC Capital Markets, LLC Brookfield Place 200 Vesey

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 22, 2024 NSTAR ELECTRIC COMPANY (Exact name of registrant as specified in its charter) Massachusetts 1-02301 04-1278810 (State or other jurisdiction of organization) (Commission F

Calculation of Filing Fee Table (Form Type) NSTAR ELECTRIC COMPANY (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

Exhibit 107 EX-FILING FEES Calculation of Filing Fee Table 424(b)(5)1 (Form Type) NSTAR ELECTRIC COMPANY (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Debt 5.

$600,000,000 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY 5.40% Debentures due 2034

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-264278-02 PROSPECTUS SUPPLEMENT (To Prospectus dated April 13, 2022) $600,000,000 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY 5.40% Debentures due 2034 NSTAR Electric Company, doing business as Eversource Energy, is offering $600,000,000 aggregate principal amount of its 5.40% Debentures due 2034. Interest on

SUBJECT TO COMPLETION, DATED MAY 20, 2024

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet

Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-264278-02 May 20, 2024 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Security: $600,000,000 5.40% Debentures due 2034 Principal Amount: $600,000,000 Maturity Date: June 1, 2034 Coupon: 5.40% Benchmark Treasury: 4.375% due May 15,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

EVERSOURCE ENERGY EXECUTIVE CHANGE IN CONTROL AND INVOLUNTARY TERMINATION SEVERANCE PROGRAM AGREEMENT

Exhibit 10 EVERSOURCE ENERGY EXECUTIVE CHANGE IN CONTROL AND INVOLUNTARY TERMINATION SEVERANCE PROGRAM AGREEMENT This Executive Change in Control and Involuntary Termination Severance Program Agreement (this “Agreement”) is made and entered into by and between Eversource Energy, a Massachusetts voluntary association (the “Company”), and [ ] (the “Executive”) and is effective as of December 4, 2023 (the “Effective Date”).

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended March 31, (Thousands of Dollars, Except Share Information) 2024 2023 Operating Revenues $ 3,332,575 $ 3,795,643 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 1,235,956 1,903,246 Operations and Maintenance 462,964 454,562 Depreciation 339,9

Eversource Energy Reports First Quarter 2024 Results

Exhibit 99.1 Eversource Energy Reports First Quarter 2024 Results HARTFORD, Conn. and BOSTON, Mass. (May 1, 2024) – Eversource Energy (NYSE: ES) today reported earnings of $521.8 million, or $1.49 per share, for the first quarter of 2024, compared with earnings of $491.2 million, or $1.41 per share, for the first quarter of 2023. Also today, the Eversource Energy Board of Trustees approved a commo

EVERSOURCE ENERGY Q1 2024 EARNINGS REPORT EVERSOURCE ENERGY Q1 2024 EARNINGS REPORT MAY 2, 2024 CUSTOMER COMMUNITY FINANCIAL EMPLOYEE CLEAN ENERGY RELIABILITY

Exhibit 99.3 EVERSOURCE ENERGY Q1 2024 EARNINGS REPORT EVERSOURCE ENERGY Q1 2024 EARNINGS REPORT MAY 2, 2024 CUSTOMER COMMUNITY FINANCIAL EMPLOYEE CLEAN ENERGY RELIABILITY EVERSOURCE ENERGY Q1 2024 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Ever

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2024 (May 1, 2024) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massac

SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS

Exhibit 10.2 SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS The Compensation Committee periodically reviews the compensation of our non-employee Trustees and, when it deems appropriate and upon consultation with the Committee’s independent compensation consultant, recommends adjustments to be approved by the Board of Trustees. The Compensation Committee recommends to the Board compensation for the T

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF (LOSS)/INCOME (Unaudited) For the Three Months Ended December 31, (Thousands of Dollars, Except Share Information) 2023 2022 Operating Revenues $ 2,694,238 $ 3,029,740 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 935,329 1,295,796 Operations and Maintenance 513,141 486,431 Depreciation 343,363

Eversource Energy Insider Trading Policy

Exhibit 19 Eversource Energy Insider Trading Policy Introduction Eversource Energy and its subsidiaries (collectively, the “Company”) has adopted this Insider Trading Policy (the “Policy”) to help its Trustees, officers and employees comply with applicable securities laws.

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2024 (February 13, 2024) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENER

Subsidiaries of the Registrants as of February 14, 2024 (1) State of Incorporation The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource Energy Service Company CT Eversource Energy Transmission V

Exhibit 21 Subsidiaries of the Registrants as of February 14, 2024 (1) State of Incorporation The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource Energy Service Company CT Eversource Energy Transmission Ventures, Inc.

DRAFT 02/08/2024 EVERSOURCE ENERGY YEAR END 2023 EARNINGS REPORT Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eve

EVERSOURCE ENERGY YEAR END 2023 EARNINGS REPORT EVERSOURCE ENERGY YEAR END 2023 EARNINGS REPORT FEBRUARY 14, 2024 CUSTOMER COMMUNITY FINANCIAL EMPLOYEE CLEAN ENERGY RELIABILITY Exhibit 99.

SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT

Exhibit 4.1.2 SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT This SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”), dated as of November 29, 2023 (the “Second Amendment Effective Date”), is entered into by and among EVERSOURCE ENERGY, a voluntary association and Massachusetts business trust organized under the laws of the Commonwealth of Massach

Eversource Energy Executive Clawback Policy

Exhibit 97 Eversource Energy Executive Clawback Policy The Board of Trustees (the Board) of Eversource Energy (the Company), in order to continue to maintain the best interests of the Company and its shareholders, is adopting this revised Clawback Policy (the Policy), which provides for the recovery of erroneously awarded incentive-based compensation in the event of an Accounting Restatement (as defined below).

Eversource Energy Reports Full-Year Results Announces Exploration of Sale of Water Distribution Business

Exhibit 99.1 Eversource Energy Reports Full-Year Results Announces Exploration of Sale of Water Distribution Business HARTFORD, Conn. and BOSTON, Mass. (February 13, 2024) – Eversource Energy (NYSE: ES) today reported a full-year 2023 loss of $(442.2) million, or $(1.26) per share, compared with full-year 2022 earnings of $1,404.9 million, or $4.05 per share. Eversource also reported a fourth quar

Registrant; State of Incorporation; Address; Telephone Number; Commission File Number; and I.R.S. Employer Identification No. EVERSOURCE ENERGY (a Massachusetts voluntary association) 300 Cadwell Drive, Springfield, Massachusetts 01104 Telephone: (80

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone Numb

FR:ES / Esso S.A.F. / BAIRD ROBERT W & CO INC /WI/ - AMENDED SCHEDULE FILED TO REPORT ACQUISITION OF BENEFICIAL OWNERSHIP 12-31-23 Passive Investment

SC 13G/A 1 rwbcinstar-sc13ga.htm AMENDED SCHEDULE FILED TO REPORT ACQUISITION OF BENEFICIAL OWNERSHIP 12-31-23 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 6)* NSTAR Electric Company (Name of Issuer) 4.25% Preferred Stock (Title of Class of Securities) 67021C206 (CUSIP Number) December 31, 2023 (Date

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2023 or ☐ TRANSITION REPORT PURSU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telep

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2023 (November 6, 2023) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended September 30, For the Nine Months Ended September 30, (Thousands of Dollars, Except Share Information) 2023 2022 2023 2022 Operating Revenues $ 2,791,482 $ 3,215,645 $ 9,216,467 $ 9,259,596 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 1,1

Eversource Energy Reports Third Quarter Results

Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports Third Quarter Results HARTFORD, Conn. and BOSTON, Mass. (November 6, 2023) – Eversource Energy (NYSE: ES) today reported earnings of $339.7 million, or $0.97 per share, for the third quarter of 2023, compared with earnings of $349.4 million, or $1.00 per share, for

EVERSOURCE ENERGY Q3 2023 RESULTS 1 Safe Harbor Statement All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings di

EVERSOURCE ENERGY Q3 2023 RESULTS November 6, 2023 2023 Third Quarter Results Exhibit 99.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File No. 1-02301 NSTAR Electric Company (Exact name of registrant as specified in its ch

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 25, 2023 NSTAR ELECTRIC COMPANY (Exact name of registrant as specified in its charter) Massachusetts 1-02301 04-1278810 (State or other jurisdiction of organization) (Commis

NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT

Exhibit 1.1 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT September 18, 2023 BofA Securities, Inc. One Bryant Park New York, New York 10036 Goldman Sachs & Co. LLC 200 West Street New York, New York 10282 PNC Capital Markets LLC 300 Fifth Avenue, 10th Floor Pittsburgh, Pennsylvania 15222 RBC Capital Markets, LLC Brookfield Place 200 Vesey Street,

Exhibit 4.1, NSTAR Electric Company Current Report on Form 8-K filed on September 25, 2023,

Exhibit 4.1 REGISTERED REGISTERED No. X-1 CUSIP 67021C AU1 ISIN NO. US67021CAU18 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $150,000,000 STATED MATURITY: OCTOBER 1, 2028 INTEREST PAYMENT DATES: APRIL 1 AND OCTOBER 1 REGULAR RECORD DATES: MARCH 15 OR SEPTEMBER 15 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 5.60% DEBENTURE

$150,000,000 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY 5.60% Debentures due 2028

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-264278-02 PROSPECTUS SUPPLEMENT (To Prospectus dated April 13, 2022) $150,000,000 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY 5.60% Debentures due 2028 NSTAR Electric Company, doing business as Eversource Energy, is offering $150,000,000 aggregate principal amount of its 5.60% Debentures due 2028. Interest on

Calculation of Filing Fee Table (Form Type) NSTAR ELECTRIC COMPANY (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

Exhibit 107 EX-FILING FEES Calculation of Filing Fee Table 424(b)(5)1 (Form Type) NSTAR ELECTRIC COMPANY (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Debt 5.

NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet

Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-264278-02 September 18, 2023 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Security: $150,000,000 5.60% Debentures due 2028 Principal Amount: $150,000,000 Maturity Date: October 1, 2028 Coupon: 5.60% Benchmark Treasury: 4.375% du

SUBJECT TO COMPLETION, DATED SEPTEMBER 18, 2023

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

Eversource Energy Reports Second Quarter Results

Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports Second Quarter Results HARTFORD, Conn. and BOSTON, Mass. (July 31, 2023) – Eversource Energy (NYSE: ES) today reported earnings of $15.4 million, or $0.04 per share, in the second quarter of 2023, compared with earnings of $291.9 million, or $0.84 per share, in the

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2023 (July 31, 2023)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2023 (July 31, 2023) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Ma

EVERSOURCE ENERGY Q2 2023 RESULTS 1 Safe Harbor Statement All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings di

EVERSOURCE ENERGY Q2 2023 RESULTS August 1, 2023 2023 Second Quarter Results Exhibit 99.

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended June 30, For the Six Months Ended June 30, (Thousands of Dollars, Except Share Information) 2023 2022 2023 2022 Operating Revenues $ 2,629,342 $ 2,572,641 $ 6,424,985 $ 6,043,951 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 1,161,067 940,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 3, 2023 (May 3, 2023)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 3, 2023 (May 3, 2023) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massac

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended March 31, (Thousands of Dollars, Except Share Information) 2023 2022 Operating Revenues $ 3,795,643 $ 3,471,310 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 1,903,246 1,389,696 Operations and Maintenance 454,562 472,433 Depreciation 312,9

Eversource Energy Reports First Quarter 2023 Results

Exhibit 99.1 Eversource Energy Reports First Quarter 2023 Results HARTFORD, Conn. and BOSTON, Mass. (May 3, 2023) – Eversource Energy (NYSE: ES) today reported first quarter 2023 earnings of $1.41 per share, compared with first quarter 2022 earnings of $1.28 per share. Results for the first quarter of 2022 included transaction- and transition-related charges of $0.02 per share. Results for the fir

EVERSOURCE ENERGY Q1 2023 RESULTS 1 Safe Harbor Statement All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings an

EVERSOURCE ENERGY Q1 2023 RESULTS May 4, 2023 2023 First Quarter Results Exhibit 99.

Registrant; State of Incorporation; Address; Telephone Number; Commission File Number; and I.R.S. Employer Identification No. EVERSOURCE ENERGY (a Massachusetts voluntary association) 300 Cadwell Drive, Springfield, Massachusetts 01104 Telephone: (80

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone Numb

SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS

Exhibit 10.2 SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS The Compensation Committee periodically reviews the compensation of our non-employee Trustees and, when it deems appropriate and upon consultation with the Committee’s independent compensation consultant, recommends adjustments to be approved by the Board of Trustees. The Compensation Committee recommends to the Board compensation for the T

Subsidiaries of the Registrants as of February 15, 2023 (1) State of Incorporation Eversource Energy (a Massachusetts business trust) (2) MA The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource

Exhibit 21 Subsidiaries of the Registrants as of February 15, 2023 (1) State of Incorporation Eversource Energy (a Massachusetts business trust) (2) MA The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource Energy Service Company CT Eversource Energy Transmission Ventures, Inc.

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2023 (February 13, 2023) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENER

EVERSOURCE ENERGY YEAR END 2022 RESULTS February 14, 2023 2022 Year - End Investor Call

Exhibit 99.3 EVERSOURCE ENERGY YEAR END 2022 RESULTS February 14, 2023 2022 Year - End Investor Call EVERSOURCE ENERGY YEAR END 2022 RESULTS Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a d

Eversource Energy Reports Full-Year Results

Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports Full-Year Results HARTFORD, Conn. and BOSTON, Mass. (February 13, 2023) – Eversource Energy (NYSE: ES) today reported full-year 2022 earnings of $1,404.9 million, or $4.05 per share, compared with full-year 2021 earnings of $1,220.5 million, or $3.54 per share. Eve

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended December 31, (Thousands of Dollars, Except Share Information) 2022 2021 Operating Revenues $ 3,029,740 $ 2,481,912 Operating Expenses: Purchased Power, Purchased Natural Gas and Transmission 1,295,796 843,127 Operations and Maintenance 486,431 473,932 Depreciation 308,535 280,81

FR:ES / Esso SA Francaise / BAIRD ROBERT W & CO INC /WI/ - AMENDED SCHEDULE FILED TO REPORT ACQUISITION OF BENEFICIAL OWNERSHIP 12-31-22 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 5)* NSTAR Electric Company (Name of Issuer) 4.25% Preferred Stock (Title of Class of Securities) 67021C206 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

Exhibit 4, Eversource Form 10

Exhibit 4 FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT AND EXTENSION AGREEMENT This FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT AND EXTENSION AGREEMENT (this ?Amendment?), dated as of October 17, 2022 (the ?First Amendment Effective Date?), is entered into by and among EVERSOURCE ENERGY, a voluntary association and Massachusetts business trust organized under

Exhibit 4.1, Eversource Form 10-Q filed on November 4, 2022

Exhibit 4.1 FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT AND EXTENSION AGREEMENT This FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT AND EXTENSION AGREEMENT (this ?Amendment?), dated as of October 17, 2022 (the ?First Amendment Effective Date?), is entered into by and among NSTAR ELECTRIC COMPANY, a Massachusetts corporation doing business as Eversource Energy (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2022 or ☐ TRANSITION REPORT PURSU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telep

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended September 30, For the Nine Months Ended September 30, (Thousands of Dollars, Except Share Information) 2022 2021 2022 2021 Operating Revenues $ 3,215,645 $ 2,432,794 $ 9,259,596 $ 7,381,172 Operating Expenses: Purchased Power, Fuel and Transmission 1,388,041 880,639 3,

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 2, 2022 (November 2, 2022) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY

Eversource Energy Reports Third Quarter Results

Exhibit 99.1 Eversource Energy Reports Third Quarter Results (HARTFORD, Conn. and BOSTON, Mass. ? November 2, 2022) Eversource Energy (NYSE: ES) today reported earnings in the third quarter of 2022 of $349.4 million, or $1.00 per share, compared with earnings of $283.2 million, or $0.82 per share, in the third quarter of 2021. Eversource Energy earnings totaled $1,084.7 million, or $3.13 per share

EVERSOURCE ENERGY Q3 2022 RESULTS Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings an

EVERSOURCE ENERGY Q3 2022 RESULTS November 3, 2022 2022 Third Quarter Results Exhibit 99.

Exhibit 4.1, NSTAR Electric Company Current Report on Form 8-K filed on September 15, 2022, 2021, File No. 001-02301

Exhibit 4.1 REGISTERED REGISTERED No. X-1 CUSIP 67021C AT4 ISIN NO. US67021CAT45 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $400,000,000 STATED MATURITY: SEPTEMBER 15, 2052 INTEREST PAYMENT DATES: MARCH 15 AND SEPTEMBER 15 REGULAR RECORD DATES: MARCH 1 OR SEPTEMBER 1 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 4.95% DEBE

NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT

Exhibit 1.1 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT September 12, 2022 BofA Securities, Inc. One Bryant Park New York, New York 10036 J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179 Morgan Stanley & Co. LLC 1585 Broadway, 29th Floor New York, New York 10036 U.S. Bancorp Investments, Inc. 214 N. Tryon Street, 26th Floo

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 15, 2022 NSTAR ELECTRIC COMPANY (Exact name of registrant as specified in its charter) Massachusetts 1-02301 04-1278810 (State or other jurisdiction of organization) (Commis

Calculation of Filing Fee Table (Form Type) NSTAR ELECTRIC COMPANY (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

EX-FILING FEES Calculation of Filing Fee Table 424(b)(5)1 (Form Type) NSTAR ELECTRIC COMPANY (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Debt 4.

$400,000,000 NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 4.95% Debentures due 2052

TABLE OF CONTENTS ?Filed Pursuant to Rule 424(b)(5) ??Registration No. 333-264278-02? PROSPECTUS SUPPLEMENT (To Prospectus dated April 13, 2022) $400,000,000 NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 4.95% Debentures due 2052 ? NSTAR Electric Company, doing business as Eversource Energy, is offering $400,000,000 aggregate principal amount of its 4.95% Debentures due 2052. Interest

SUBJECT TO COMPLETION, DATED SEPTEMBER 12, 2022

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

NSTAR Electric Company doing business as Eversource Energy

Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-264278-02 September 12, 2022 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Security: $400,000,000 4.95% Debentures due 2052 Principal Amount: $400,000,000 Maturity Date: September 15, 2052 Coupon: 4.95% Benchmark Treasury: 2.875%

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2022 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

Eversource Energy Reports Second Quarter Results

Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports Second Quarter Results (HARTFORD, Conn. and BOSTON, Mass. ? July 28, 2022) Eversource Energy (NYSE: ES) today reported earnings of $291.9 million, or $0.84 per share, in the second quarter of 2022, compared with earnings of $264.5 million, or $0.77 per share, in th

EVERSOURCE ENERGY Q2 2022 RESULTS Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings an

EVERSOURCE ENERGY Q2 2022 RESULTS July 29, 2022 2022 Second Quarter Results Exhibit 99.

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 28, 2022 (July 28, 2022) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Ma

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended June 30, For the Six Months Ended June 30, (Thousands of Dollars, Except Share Information) 2022 2021 2022 2021 Operating Revenues $ 2,572,641 $ 2,122,538 $ 6,043,951 $ 4,948,378 Operating Expenses: Purchased Power, Fuel and Transmission 940,541 650,087 2,330,237 1,648

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 17, 2022 NSTAR ELECTRIC COMPANY (Exact name of registrant as specified in its charter) Massachusetts 1-02301 04-1278810 (State or other jurisdiction of organization) (Commission F

Exhibit 4.1, NSTAR Electric Company Current Report on Form 8-K filed on May 17, 2022, File No. 001-02301

Exhibit 4.1 REGISTERED REGISTERED No. X-1 CUSIP 67021C AS6 ISIN NO. US67021CAS61 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $450,000,000 STATED MATURITY: JUNE 1, 2052 INTEREST PAYMENT DATES: JUNE 1 AND DECEMBER 1 REGULAR RECORD DATES: MAY 15 OR NOVEMBER 15 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 4.55% DEBENTURE DUE 2

NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT

EX-1.1 2 tm2215678d1ex1-1.htm EXHIBIT 1.1 Exhibit 1.1 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT May 12, 2022 Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 BNY Mellon Capital Markets, LLC 240 Greenwich Street, 3W New York, New York 10286 BofA Securities, Inc. One Bryant Park New York, New York 10036 U.S. Bancorp Investments

Calculation of Filing Fee Table (Form Type) NSTAR ELECTRIC COMPANY (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

EX-FILING FEES Calculation of Filing Fee Table 424(b)(5)1 (Form Type) NSTAR ELECTRIC COMPANY (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Debt 4.

$450,000,000 NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 4.55% Debentures due 2052

TABLE OF CONTENTS ?Filed Pursuant to Rule 424(b)(5) ?Registration No. 333-264278-02? PROSPECTUS SUPPLEMENT (To Prospectus dated April 13, 2022) $450,000,000 NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 4.55% Debentures due 2052 ? NSTAR Electric Company, doing business as Eversource Energy, is offering $450,000,000 aggregate principal amount of its 4.55% Debentures due 2052. Interest

SUBJECT TO COMPLETION, DATED MAY 12, 2022

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet

FWP 1 tm2215159d2fwp.htm FWP Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-264278-02 May 12, 2022 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Security: $450,000,000 4.55% Debentures due 2052 Principal Amount: $450,000,000 Maturity Date: June 1, 2052 Coupon: 4.55% Benchmark

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2022 or ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 4, 2022 (May 4, 2022) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massac

Eversource Energy Reports First Quarter 2022 Results; Initiates Strategic Review of Offshore Wind Investments

EX-99.1 2 tm2214420d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 Eversource Energy Reports First Quarter 2022 Results; Initiates Strategic Review of Offshore Wind Investments HARTFORD, Conn. and BOSTON, Mass. (May 4, 2022) – Eversource Energy (NYSE: ES) today reported first quarter 2022 earnings of $443.4 million, or $1.28 per share, compared with earnings of $366.1 million, or $1.06 per share, in the fi

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended March 31, (Thousands of Dollars, Except Share Information) 2022 2021 Operating Revenues $ 3,471,310 $ 2,825,840 Operating Expenses: Purchased Power, Fuel and Transmission 1,389,696 998,491 Operations and Maintenance 472,433 465,542 Depreciation 289,330 270,704 Amortiza

EVERSOURCE ENERGY Q1 2022 RESULTS Safe Harbor Statement 1 All per-share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and

Exhibit 99.3 EVERSOURCE ENERGY Q1 2022 RESULTS May 5, 2022 2022 First Quarter Results Exhibit 99.3 EVERSOURCE ENERGY Q1 2022 RESULTS Safe Harbor Statement 1 All per-share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct lega

As filed with the Securities and Exchange Commission on April 13, 2022

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on April 13, 2022 Registration Nos.

Calculation of Filing Fee Tables Form S-3 (Form Type) Eversource Energy The Connecticut Light & Power Company NSTAR Electric Company Public Service Company of New Hampshire (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registe

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Eversource Energy The Connecticut Light & Power Company NSTAR Electric Company Public Service Company of New Hampshire (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule (1) Amount Registered Proposed M

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM T-1

Exhibit 25.1(B) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) DEUTSCHE BANK TRUST COMPANY AMERICAS (formerly BANKERS TRUST COMPANY) (Exact name of trustee as specif

securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to

Exhibit 25.1(D) securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2)? U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTE

Exhibit 25.1(A) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) ? THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTE

Exhibit 25.1(C) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) ? THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter)

Eversource Form 10-K filed on February

Exhibit 10.12 Published CUSIP Numbers: 30040TAH8 (Facility) 30040TAJ4 (Revolver) SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of October 15, 2021 by and among EVERSOURCE ENERGY, AQUARION WATER COMPANY OF CONNECTICUT, AND, EACH DOING BUSINESS AS EVERSOURCE ENERGY, NSTAR GAS COMPANY, THE CONNECTICUT LIGHT AND POWER COMPANY, PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE, YANKEE GAS SERVICES COMPAN

Subsidiaries of the Registrants as of February 16, 2022 (1) State of Incorporation Eversource Energy (a Massachusetts business trust) (2) MA The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource

Exhibit 21 Subsidiaries of the Registrants as of February 16, 2022 (1) State of Incorporation Eversource Energy (a Massachusetts business trust) (2) MA The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource Energy Service Company CT Eversource Energy Transmission Ventures, Inc.

SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS

Exhibit 10.2 SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS The Compensation Committee periodically reviews the compensation of our non-employee Trustees and, when it deems appropriate and upon consultation with the Committee?s independent compensation consultant, recommends adjustments to be approved by the Board of Trustees. The Compensation Committee recommends to the Board compensation for the T

Eversource Form 10-K filed on February

Exhibit 10.13 Executed Copy Published CUSIP Numbers: 67020NAE4 (Facility) 67020NAF1 (Revolver) SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of October 15, 2021 by and among NSTAR ELECTRIC COMPANY (DOING BUSINESS AS EVERSOURCE ENERGY), as the Borrower, BARCLAYS BANK PLC, as Administrative Agent and Swing Line Lender, and THE OTHER LENDERS FROM TIME TO TIME PARTY HERETO BOFA SECURITIES, INC

Registrant; State of Incorporation; Address; Telephone Number; Commission File Number; and I.R.S. Employer Identification No. EVERSOURCE ENERGY (a Massachusetts voluntary association) 300 Cadwell Drive, Springfield, Massachusetts 01104 Telephone: (80

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone Numb

Eversource Energy Reports Full-Year Results

Exhibit 99.1 Eversource Energy Reports Full-Year Results (HARTFORD, Conn. and BOSTON, Mass. ? February 16, 2022) Eversource Energy (NYSE: ES) today reported full-year 2021 earnings of $1,220.5 million, or $3.54 per share, compared with earnings of $1,205.2 million, or $3.55 per share, for full-year 2020. Eversource also reported fourth quarter 2021 earnings of $306.7 million, or $0.89 per share, c

EVERSOURCE ENERGY YEAR END 2021 RESULTS February 17, 2022 2021 Year - End Investor Call

EX-99.3 4 tm226658d1ex99-3.htm EXHIBIT 99.3 Exhibit 99.3 EVERSOURCE ENERGY YEAR END 2021 RESULTS February 17, 2022 2021 Year - End Investor Call EVERSOURCE ENERGY YEAR END 2021 RESULTS Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings a

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 16, 2022 (February 16, 2022) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENER

EVERSOURCE ENERGY AND SUBSIDIARIES

EX-99.2 3 tm226658d1ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended December 31, (Thousands of Dollars, Except Share Information) 2021 2020 Operating Revenues $ 2,481,912 $ 2,233,933 Operating Expenses: Purchased Power, Fuel and Transmission 843,127 674,883 Operations and Maintenance 473,932 474,104 De

FR:ES / Esso SA Francaise / BAIRD ROBERT W & CO INC /WI/ - AMENDED SCHEDULE FILED TO REPORT ACQUISITION OF BENEFICIAL OWNERSHIP 12-31-21 Passive Investment

SC 13G/A 1 rwbcinstar-sc13ga.htm AMENDED SCHEDULE FILED TO REPORT ACQUISITION OF BENEFICIAL OWNERSHIP 12-31-21 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* NSTAR Electric Company (Name of Issuer) 4.25% Preferred Stock (Title of Class of Securities) 67021C206 (CUSIP Number) December 31, 2021 (Date

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2021 or ☐ TRANSITION REPORT PURSU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telep

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 2, 2021 (November 2, 2021) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY

Eversource Energy Reports Third Quarter Results

EX-99.1 2 tm2131538d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports Third Quarter Results (HARTFORD, Conn. and BOSTON, Mass. – November 2, 2021) Eversource Energy (NYSE: ES) today reported earnings of $283.2 million, or $0.82 per share, in the third quarter of 2021, compared with earning

November 3, 2021 2021 Third Quarter Results

EX-99.3 4 tm2131538d1ex99-3.htm EXHIBIT 99.3 Exhibit 99.3 November 3, 2021 2021 Third Quarter Results Safe Harbor Statement 1 All per - share amounts in this news release are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and

The data contained in this report is preliminary and is unaudited. This report is being submitted for the sole purpose of providing information to shareholders about Ever source Energy and Subsidiaries and is not a representation, prospectus, or inte

EX-99.2 3 tm2131538d1ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended September 30, For the Nine Months Ended September 30, (Thousands of Dollars, Except Share Information) 2021 2020 2021 2020 Operating Revenues $ 2,461,199 $ 2,343,642 $ 7,409,577 $ 6,670,497 Operating Expenses: Purchased Powe

Underwriting Agreement, dated August 10, 2021, between NSTAR Electric Company, doing business as Eversource Energy, and Barclays Capital Inc., BofA Securities, Inc., PNC Capital Markets LLC and RBC Capital Markets, LLC, as representatives of the several Underwriters named therein.

EX-1.1 2 tm2125690d1ex1-1.htm EXHIBIT 1.1 Exhibit 1.1 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT August 10, 2021 Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 BofA Securities, Inc. One Bryant Park New York, New York 10036 PNC Capital Markets LLC 300 Fifth Avenue, 10th Floor Pittsburgh, Pennsylvania 15222 RBC Capital Markets

Form of 1.95% Debenture due 2031 (Exhibit 4, NSTAR Electric Company Current Report on Form 8-K filed on August 23, 2021, File No. 001-02301)

EX-4.1 3 tm2125690d1ex4-1.htm EXHIBIT 4.1 Exhibit 4.1 REGISTERED REGISTERED No. X-1 CUSIP 67021C AR8 ISIN NO. US6702lCAR88 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $300,000,000 STATED MATURITY: AUGUST 15, 2031 INTEREST PAYMENT DATES: FEBRUARY 15 AND AUGUST 15 REGULAR RECORD DATES: FEBRUARY 1 OR AUGUST 1 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing b

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 23, 2021 NSTAR ELECTRIC COMPANY (Exact name of registrant as specified in its charter) Massachusetts 1-02301 04-1278810 (State or other jurisdiction of organization) (Commissio

$300,000,000 NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 1.95% Debentures due 2031

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(5) Registration No. 333-231118-02? The registrant is updating the ?Calculation of Registration Fee? table set forth in the Registration Statement on Form S-3 (Registration No. 333-231118-02) to indicate the $298,272,000 public offering price of securities offered hereby and the registration fee of $32,541.48, calculated in accordance with Rule 457(r)

SUBJECT TO COMPLETION, DATED AUGUST 10, 2021

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

NSTAR Electric Company doing business as Eversource Energy

Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-231118-02 August 10, 2021 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Security: $300,000,000 1.95% Debentures due 2031 Principal Amount: $300,000,000 Maturity Date: August 15, 2031 Coupon: 1.95% Benchmark Treasury: 1.625% due M

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2021 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

July 30, 2021 2021 Second Quarter Results

EX-99.3 4 tm2123580d1ex99-3.htm EXHIBIT 99.3 Exhibit 99.3 July 30, 2021 2021 Second Quarter Results Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and li

Eversource Energy Reports Second Quarter Results

EX-99.1 2 tm2123580d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports Second Quarter Results (HARTFORD, Conn. and BOSTON, Mass. – July 29, 2021) Eversource Energy (NYSE: ES) today reported earnings of $264.5 million, or $0.77 per share, in the second quarter of 2021, compared with earnings

EVERSOURCE ENERGY AND SUBSIDIARIES

EX-99.2 3 tm2123580d1ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended June 30, For the Six Months Ended June 30, (Thousands of Dollars, Except Share Information) 2021 2020 2021 2020 Operating Revenues $ 2,122,538 $ 1,953,128 $ 4,948,378 $ 4,326,854 Operating Expenses: Purchased Power, Fuel and

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 29, 2021 (July 29, 2021) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Ma

Form of 3.10% Debenture due 2051 (Exhibit 4, NSTAR Electric Company Current Report on Form 8-K filed on June 2, 2021, File No. 001-02301)

EX-4 3 tm2118099d1ex4.htm EXHIBIT 4 Exhibit 4 REGISTERED REGISTERED No. X-1 CUSIP 67021C AQ0 ISIN NO. US67021C AQ06 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $300,000,000 STATED MATURITY: JUNE 1, 2051 INTEREST PAYMENT DATES: JUNE 1 AND DECEMBER 1 REGULAR RECORD DATES: MAY 15 OR NOVEMBER 15 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing business as EVER

Underwriting Agreement, dated May 24, 2021, between NSTAR Electric Company, doing business as Eversource Energy, and Barclays Capital Inc., MUFG Securities Americas Inc., PNC Capital Markets LLC and RBC Capital Markets, LLC, as representatives of the several Underwriters named therein.

Exhibit 1 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT May 24, 2021 Barclays Capital Inc.

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 2, 2021 (May 27, 2021) NSTAR ELECTRIC COMPANY (Exact name of registrant as specified in its charter) Massachusetts 1-02301 04-1278810 (State or other jurisdiction of organization

$300,000,000 NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 3.10% Debentures due 2051

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(5)? Registration No. 333-231118-02? The registrant is updating the ?Calculation of Registration Fee? table set forth in the Registration Statement on Form S-3 (Registration No. 333-231118-02) to indicate the $297,273,000 public offering price of securities offered hereby and the registration fee of $32,432.49, calculated in accordance with Rule 457(r

NSTAR Electric Company doing business as Eversource Energy

Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-231118-02 May 24, 2021 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Expected Ratings*: A1 (Moody?s); A (S&P); A+ (Fitch) Trade Date: May 24, 2021 Settlement Date**: May 27, 2021 (T+3) Security: $300,000,000 3.10% Debentures due

SUBJECT TO COMPLETION, DATED MAY 24, 2021

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

May 10, 2021 2021 First Quarter Results

EX-99.3 4 tm2115513d1ex99-3.htm EXHIBIT 99.3 Exhibit 99.3 May 10, 2021 2021 First Quarter Results Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and liab

EVERSOURCE ENERGY AND SUBSIDIARIES

EX-99.2 3 tm2115513d1ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended March 31, (Thousands of Dollars, Except Share Information) 2021 2020 Operating Revenues $ 2,825,840 $ 2,373,726 Operating Expenses: Purchased Power, Fuel and Transmission 998,491 876,570 Operations and Maintenance 465,542 34

Eversource Energy Reports First Quarter 2021 Results

EX-99.1 2 tm2115513d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports First Quarter 2021 Results HARTFORD, Conn. and BOSTON, Mass. (May 10, 2021) – Eversource Energy (NYSE: ES) today reported first quarter 2021 earnings of $366.1 million, or $1.06 per share, compared with earnings of $334.

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 10, 2021 (May 5, 2021) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 3)* NSTAR Electric Company (Name of Issuer) 4.25% Preferred Stock (Title of Class of Securities) (CUSIP Num

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 3)* NSTAR Electric Company (Name of Issuer) 4.25% Preferred Stock (Title of Class of Securities) 67021C206 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

Credit Agreement, dated as of October 21, 2020, by and among Eversource Energy and Eversource Gas Company of Massachusetts and the Banks named therein, pursuant to which Bank of America, N.A. serves as Administrative Agent and Swing Line Lender

Execution Copy EXHIBIT 10.12 Published CUSIP Numbers: 30040TAE5 (Facility) 30040TAF2 (Revolver) CREDIT AGREEMENT dated as of October 21, 2020 by and among EVERSOURCE ENERGY, and EVERSOURCE GAS COMPANY OF MASSACHUSETTS, as the Borrowers, BANK OF AMERICA, N.A., as Administrative Agent and Swing Line Lender, and THE OTHER LENDERS FROM TIME TO TIME PARTY HERETO BOFA SECURITIES, INC., BARCLAYS BANK PLC

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone Numb

Eversource Energy Board of Trustees’ Compensation Arrangement Summary

Exhibit 10.2 SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS The Compensation Committee periodically reviews the compensation of our non-employee Trustees and, when it deems appropriate and upon consultation with the Committee?s independent compensation consultant, recommends adjustments to be approved by the Board of Trustees. The Compensation Committee recommends to the Board compensation for the T

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of the Registrants as of February 17, 2021 (1) State of Incorporation Eversource Energy (a Massachusetts business trust) (2) MA The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource Energy Service Company CT Eversource Energy Transmission Ventures, Inc.

Eversource Energy Reports Full Year 2020 Results

Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports Full Year 2020 Results (HARTFORD, Conn. and BOSTON, Mass. – February 16, 2021) Eversource Energy (NYSE: ES) today reported full-year 2020 earnings of $1.205 billion, or $3.55 per share, compared with 2019 earnings of $909.1 million, or $2.81 per share. Results for

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 16, 2021 (February 16, 2021) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENER

February 17, 2021 2020 Year - End Investor Call

EX-99.3 4 tm216619d1ex99-3.htm EXHIBIT 99.3 Exhibit 99.3 February 17, 2021 2020 Year - End Investor Call Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets a

EVERSOURCE ENERGY AND SUBSIDIARIES

EX-99.2 3 tm216619d1ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended December 31, (Thousands of Dollars, Except Share Information) 2020 2019 Operating Revenues $ 2,233,933 $ 2,050,386 Operating Expenses: Purchased Power, Fuel and Transmission 674,883 714,119 Operations and Maintenance 474,104 368,452 De

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* NSTAR Electric Company (Name of Issuer) 4.25% Preferred Stock (Title of Class of Securities) (CUSIP Num

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* NSTAR Electric Company (Name of Issuer) 4.25% Preferred Stock (Title of Class of Securities) 67021C206 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 9, 2020 (November 9, 2020) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY

2020 EEI FINANCIAL CONFERENCE November 9 - 11, 2020

EX-99.1 2 tm2034838d2ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 2020 EEI FINANCIAL CONFERENCE November 9 - 11, 2020 Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the ass

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telep

2020 Third Quarter Results November 4, 2020

Exhibit 99.3 2020 Third Quarter Results November 4, 2020 Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and liabilities of such bu siness, but rather rep

EVERSOURCE ENERGY AND SUBSIDIARIES

EX-99.2 3 tm2034838d1ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended September 30, For the Nine Months Ended September 30, (Thousands of Dollars, Except Share Information) 2020 2019 2020 2019 Operating Revenues $ 2,343,642 $ 2,175,797 $ 6,670,497 $ 6,476,084 Operating Expenses: Purchased Powe

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2020 (November 3, 2020) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY

Eversource Energy Reports Third Quarter Results

EX-99.1 2 tm2034838d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 Eversource Energy Reports Third Quarter Results (HARTFORD, Conn. and BOSTON, Mass. – November 3, 2020) Eversource Energy (NYSE: ES) today reported earnings of $346.3 million, or $1.01 per share, in the third quarter of 2020, compared with earnings of $318.9 million, or $0.98 per share, in the third quarter of 2019. In the first nine months

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 30, 2020 (July 30, 2020) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Ma

Eversource Energy Reports Second Quarter Results

Exhibit 99.1 Eversource Energy Reports Second Quarter Results (HARTFORD, Conn. and BOSTON, Mass. – July 30, 2020) Eversource Energy (NYSE: ES) today reported earnings of $252.2 million, or $0.75 per share, in the second quarter of 2020, compared with earnings of $31.5 million, or $0.10 per share, in the second quarter of 2019. In the first half of 2020, Eversource Energy earned $587 million, or $1

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended June 30, For the Six Months Ended June 30, (Thousands of Dollars, Except Share Information) 2020 2019 2020 2019 Operating Revenues $ 1,953,128 $ 1,884,495 $ 4,326,854 $ 4,300,287 Operating Expenses: Purchased Power, Fuel and Transmission 630,132 620,904 1,506,703 1,595

2020 Second Quarter Results July 31, 2020

EX-99.3 4 tm2026105d1ex99-3.htm EXHIBIT 99.3 Exhibit 99.3 2020 Second Quarter Results July 31, 2020 Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and li

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2020 (May 6, 2020) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massac

EVERSOURCE ENERGY AND SUBSIDIARIES

EX-99.2 3 tm2018742d1ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Thousands of Dollars) As of March 31, 2020 As of December 31, 2019 ASSETS Current Assets: Cash $ 47,425 $ 15,432 Receivables, Net (net of allowance for uncollectible accounts of $262,078 and $224,821 as of March 31, 2020 and December 31, 2019, respectively

2020 First Quarter Results

EX-99.3 4 tm2018742d1ex99-3.htm EXHIBIT 99.3 Exhibit 99.3 2020 First Quarter Results Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and liabilities alloc

Eversource Energy Reports First Quarter 2020 Results

EX-99.1 2 tm2018742d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports First Quarter 2020 Results (HARTFORD, Conn. and BOSTON, Mass. – May 6, 2020) Eversource Energy (NYSE: ES) today reported first quarter 2020 earnings of $334.8 million, or $1.01 per share, compared with earnings of $308.7

Underwriting Agreement, dated March 23, 2020, between NSTAR Electric Company, doing business as Eversource Energy, and BofA Securities, Inc., Citigroup Global Markets Inc., Mizuho Securities USA LLC, MUFG Securities Americas Inc., and RBC Capital Markets, LLC, as representatives of the several Underwriters named therein.

Exhibit 1 NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT March 23, 2020 BofA Securities, Inc.

Form of 3.95% Debenture due 2030 (Exhibit 4, NSTAR Electric Company Current Report on Form 8-K filed on March 26, 2020, File No. 001-02301)

EXHIBIT 4 REGISTERED REGISTERED No. W-1 CUSIP 67021C AP2 ISIN NO. US67021CAP23 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $400,000,000 STATED MATURITY: APRIL 1, 2030 INTEREST PAYMENT DATES: APRIL 1 AND OCTOBER 1 REGULAR RECORD DATES: MARCH 15 OR SEPTEMBER 15 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 3.95% DEBENTURE DUE

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 26, 2020 (March 26, 2020) NSTAR ELECTRIC COMPANY (Exact name of registrant as specified in its charter) Massachusetts 1-02301 04-1278810 (State or other jurisdiction of organiza

$400,000,000 NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 3.95% Debentures due 2030

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No.

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 23, 2020 (March 23, 2020) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a

SUBJECT TO COMPLETION, DATED MARCH 23, 2020

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No.

NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet

Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-231118-02 March 23, 2020 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Ratings*: A1 (Moody’s); A (S&P); A+ (Fitch) Trade Date: March 23, 2020 Settlement Date**: March 26, 2020 (T+3) Security: $400,000,000 3.95% Debentures due 203

, 2020, File No. 001-05324

Exhibit 4.3 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Eversource Energy Description of Common Shares and Preferred Shares The following summary of the terms of our Common Shares and Preferred Shares is based upon Eversource Energy’s Declaration of Trust (the “Declaration of Trust”). The summary is not complete, and is qualif

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of the Registrants as of February 26, 2020 (1) State of Incorporation Eversource Energy (a Massachusetts business trust) (2) MA The Connecticut Light and Power Company (2) (3) CT Connecticut Yankee Atomic Power Company (4) CT Eversource Energy Service Company CT Eversource Energy Transmission Ventures, Inc.

, 2020, File No. 001-05324

EX-10.6.1 6 a201910k-exhibit1061dcplan.htm EXHIBIT 10.6.1 - DC PLAN AMENDMENT 1 Exhibit 10.6.1 Amendment Number 1 to the Eversource Deferred Compensation Plan Effective February 7, 2018, the Eversource Deferred Compensation Plan is amended as follows: 1. The definition of “Eligible Trustee” in Article 2 is hereby amended to remove “an” and add “a non-Employee” and shall read as follows: ““Eligible

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone Numb

, 2020, File No. 001-05324

Exhibit 4.4 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 NSTAR Electric Company Description of Capital Stock The following summary of the terms of our Capital Stock is based upon NSTAR Electric’s Amended and Restated Articles of Organization (the “Articles of Organization”) and Amended and Restated Bylaws (the “Bylaws”). The su

, 2020, File No. 001-05324

Exhibit 4.4 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The Connecticut Light and Power Company Description of Capital Stock The following summary of the terms of our Capital Stock is based upon CL&P’s Amended and Restated Certificate of Incorporation (the “Certificate of Incorporation”) and CL&P’s Amended and Restated Bylaws

Eversource Energy Board of Trustees’ Compensation Arrangement Summary

Exhibit 10.2 SUMMARY OF TRUSTEE COMPENSATION ARRANGEMENTS The Compensation Committee periodically reviews the compensation of our non-employee Trustees and, when it deems appropriate and upon consultation with the Committee’s independent compensation consultant, recommends adjustments to be approved by the Board of Trustees. The Compensation Committee recommends to the Board compensation for the T

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 19, 2020 (February 19, 2020) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENER

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended December 31, (Thousands of Dollars, Except Share Information) 2019 2018 Operating Revenues $ 2,050,386 $ 2,034,958 Operating Expenses: Purchased Power, Fuel and Transmission 714,119 696,017 Operations and Maintenance 368,452 364,333 Depreciation 228,646 207,853 Amortization 11,6

2019 Year - End Investor Call February 20, 2020

Exhibit 99.3 2019 Year - End Investor Call February 20, 2020 Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and liabi lit ies allocated to such business,

Eversource Energy Reports Full Year 2019 Results

EX-99.1 2 tm209303d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports Full Year 2019 Results (HARTFORD, Conn. and BOSTON, Mass. – February 19, 2020) Eversource Energy (NYSE: ES) today reported full-year 2019 earnings of $909.1 million, or $2.81 per share, compared with 2018 earnings of $1.0

NSARP / NSTAR Electric Co. / BAIRD ROBERT W & CO INC /WI/ - AMENDED SCHEDULE FILED TO REPORT ACQUISITION OF BENEFICIAL OWNERSHIP 12-31-19 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.)* NSTAR Electric Company (Name of Issuer) 4.25% Preferred Stock (Title of Class of Securities) 67021C206 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whi

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2019 (November 8, 2019) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY

EEI FINANCIAL CONFERENCE November 10 - 12, 2019

Exhibit 99.1 EEI FINANCIAL CONFERENCE November 10 - 12, 2019 Safe Harbor Statement 1 All per - share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and liabilities allocat ed to such business,

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telep

Eversource Energy Reports Third Quarter Results

Exhibit 99.1 Eversource Energy Reports Third Quarter Results (HARTFORD, Conn. and BOSTON, Mass. – November 5, 2019) Eversource Energy (NYSE: ES) today reported earnings of $318.9 million, or $0.98 per share, in the third quarter of 2019, compared with earnings of $289.4 million, or $0.91 per share, in the third quarter of 2018. In the first nine months of 2019, Eversource Energy earned $659 millio

EVERSOURCE ENERGY AND SUBSIDIARIES

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Thousands of Dollars) As of September 30, 2019 As of December 31, 2018 ASSETS Current Assets: Cash $ 22,688 $ 108,068 Receivables, Net 993,396 994,055 Unbilled Revenues 150,394 176,285 Fuel, Materials, Supplies and REC Inventory 204,012 238,042 Regulatory Assets 538,162 514,779 Prepayments and Other

2019 Third Quarter Results Investor Call November 6, 2019

Exhibit 99.3 2019 Third Quarter Results Investor Call November 6, 2019 Safe Harbor Statement 1 All per - share amounts in this news release are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and liabilities allocat ed to such

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 5, 2019 (November 5, 2019) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY

Quarterly Report - SECOND QUARTER 2019 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Registrant; State of Incorporation; Address; Telephone

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 a19-1637918k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2019 (July 31, 2019) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5

2019 Second Quarter Results Investor Call August 1, 2019

Exhibit 99.3 2019 Second Quarter Results Investor Call August 1, 2019 Safe Harbor Statement 1 All per-share amounts in this presentation are reported on a diluted basis. The only common equity securities that are publicly traded are common shares of Eversource Energy. The earnings and EPS of each business do not represent a direct legal interest in the assets and liabilities allocated to such busi

As of June 30, 2019

EX-99.2 3 a19-163791ex99d2.htm EX-99.2 Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Thousands of Dollars) As of June 30, 2019 As of December 31, 2018 ASSETS Current Assets: Cash $ 20,578 $ 108,068 Receivables, Net 964,314 994,055 Unbilled Revenues 154,920 176,285 Fuel, Materials, Supplies and Inventory 174,124 238,042 Regulatory Assets 515,265

Eversource Energy Reports Second Quarter Results

EX-99.1 2 a19-163791ex99d1.htm EX-99.1 Exhibit 99.1 56 Prospect St., Hartford, Connecticut 06103-2818 800 Boylston St., Boston, Massachusetts 02199 Eversource Energy Reports Second Quarter Results (HARTFORD, Conn. and BOSTON, Mass. — July 31, 2019) Eversource Energy (NYSE: ES) today reported earnings of $31.5 million, or $0.10 per share, in the second quarter of 2019, compared with earnings of $24

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 23, 2019 (May 17, 2019) NSTAR ELECTRIC COMPANY (Exact name of registrant as specified in its charter) Massachusetts 1-02301 04-1278810 (State or other jurisdiction of organization

(Exhibit 4, NSTAR Electric Company Current Report on Form 8-K filed on May 23, 2019, File No. 001-02301)

Exhibit 4 REGISTERED REGISTERED No. V-1 CUSIP 67021C AN7 ISIN NO. US67021CAN74 REGISTERED OWNER: CEDE & CO. PRINCIPAL AMOUNT: $400,000,000 STATED MATURITY: MAY 15, 2029 INTEREST PAYMENT DATES: MAY 15 AND NOVEMBER 15 REGULAR RECORD DATES: MAY 1 OR NOVEMBER 1 IMMEDIATELY PRECEDING THE APPLICABLE INTEREST PAYMENT DATE NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 3.25% DEBENTURE DUE MAY

Underwriting Agreement, dated May 14, 2019, between NSTAR Electric Company, doing business as Eversource Energy, and Barclays Capital Inc., BofA Securities, Inc., Citigroup Global Markets Inc. and TD Securities (USA) LLC, as representatives of the several Underwriters named therein.

NSTAR ELECTRIC COMPANY DOING BUSINESS AS EVERSOURCE ENERGY DEBT SECURITIES UNDERWRITING AGREEMENT May 14, 2019 Barclays Capital Inc.

$400,000,000 NSTAR ELECTRIC COMPANY doing business as EVERSOURCE ENERGY 3.25% Debentures due 2029

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No.

NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet

Free Writing Prospectus Filed pursuant to Rule 433 Registration No. 333-231118-02 May 14, 2019 NSTAR Electric Company doing business as Eversource Energy Pricing Term Sheet Issuer: NSTAR Electric Company doing business as Eversource Energy Ratings*: A2 (Moody’s); A+ (S&P); A+ (Fitch) Trade Date: May 14, 2019 Settlement Date: May 17, 2019 (T+3) Security: $400,000,000 3.25% Debentures due 2029 Matur

SUBJECT TO COMPLETION, DATED MAY 14, 2019

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No.

Quarterly Report - FIRST QUARTER 2019 FORM 10-Q

10-Q 1 a2019q110-qxdocument.htm FIRST QUARTER 2019 FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period f

As of March 31, 2019

Exhibit 99.2 EVERSOURCE ENERGY AND SUBSIDIARIES CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Thousands of Dollars) As of March 31, 2019 As of December 31, 2018 ASSETS Current Assets: Cash $ 35,145 $ 108,068 Receivables, Net 1,140,348 994,055 Unbilled Revenues 159,288 176,285 Fuel, Materials, Supplies and Inventory 277,104 238,042 Regulatory Assets 507,255 514,779 Prepayments and Other Curren

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2019 (May 1, 2019) Commission File Number Registrant; State of Incorporation Address; and Telephone Number I.R.S. Employer Identification No. 1-5324 EVERSOURCE ENERGY (a Massac

May 2, 2019 presentation slides.

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Eversource Energy Reports First Quarter 2019 Results

Exhbiit 99.1 800 Boylston St., Boston, Massachusetts 02199 56 Prospect St., Hartford, Connecticut 06103-2818 News Release Eversource Energy Reports First Quarter 2019 Results (HARTFORD, Conn. and BOSTON, Mass. – May 1, 2019) Eversource Energy (NYSE: ES) today reported first quarter 2019 earnings of $308.7 million, or $0.97 per share, compared with earnings of $269.5 million, or $0.85 per share, in

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of U.S. Bank National Association.

Exhibit 25.1(D) SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) o U.S. BANK NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 31-0841368 I.R.S. Employer Iden