Every 424B that NSTAR ELECTRIC CO 4.78 PR (NSARO) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 424B covers the supplement that carries the terms of a priced offering, so if you follow NSARO and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full NSARO filings page.
NSTAR Electric Company is registering $700,000,000 of debentures via a prospectus supplement. The offering comprises $350,000,000 of 4.650% Debentures due May 15, 2031 and $350,000,000 of 5.200% Debentures due May 15, 2036, interest payable semi-annually beginning November 15, 2026.
The debentures are unsecured, rank equally with other unsecured unsubordinated indebtedness, will be issued in global book-entry form through DTC, and are new issues with no planned exchange listing. Estimated net proceeds are approximately $695.2 million, to be used to repay maturing notes totaling $300 million, refinance short-term debt if any, and fund capital expenditures and working capital.
NSTAR Electric Company, doing business as Eversource Energy, is offering two series of unsecured debentures due May 15, 2031 and May 15, 2036. Interest will be payable semi-annually on May 15 and November 15, beginning November 15, 2026. The offering will be issued in global book-entry form and may be redeemed at the issuer’s option prior to specified Par Call Date formulas or, in whole but not in part, at 101% if a Tax Credit Event occurs. Net proceeds are expected to refinance specified near-term notes including repayment at maturity of $250 million of 2.70% Debentures due June 1, 2026 and $50 million of 2.75% Senior Notes, Series H due June 15, 2026, with remaining proceeds for short-term refinancing, capital expenditures and working capital.
NSTAR Electric Company (Eversource Energy) is offering $300,000,000 of 5.20% Debentures due 2035 in a reopening that will be fungible with the $400,000,000 issued on February 26, 2025, bringing total outstanding for this series to $700,000,000. The debentures priced at 102.451% with a 0.650% underwriting discount, generating estimated net proceeds of $305,403,000 (plus accrued interest if settled on October 17, 2025).
The notes are unsecured, rank equally with other unsubordinated debt, and pay interest semi-annually on March 1 and September 1, starting March 1, 2026. They mature on March 1, 2035, and are redeemable at the greater of make‑whole (Treasury Rate + 15 bps) or 100% before the Par Call Date of December 1, 2034, and at 100% thereafter, in each case plus accrued interest.
Use of proceeds: approximately $305.4 million will be used to refinance short‑term debt and to fund capital expenditures and working capital. As of October 9, 2025, short‑term debt outstanding was $399.0 million with a 4.26% weighted‑average annual interest rate. The debentures will not be listed on an exchange; settlement is expected on October 17, 2025.
NSTAR Electric Company (doing business as Eversource Energy) plans a reopening of its 5.20% Debentures due 2035 via a preliminary prospectus supplement. The new notes will be part of the same series as the $400,000,000 issued on February 26, 2025, share the same CUSIP, and be fully fungible. The debentures mature on March 1, 2035, pay interest semi-annually on March 1 and September 1 (commencing March 1, 2026 for this tranche), and are unsecured, ranking equally with the company’s other unsecured and unsubordinated debt.
The notes are redeemable at the company’s option at a make-whole price prior to the Par Call Date and at 100% of principal on or after the Par Call Date of December 1, 2034. The offering is expected to qualify as a “qualified reopening” for U.S. federal income tax purposes. NSTAR Electric does not intend to list the debentures. The company expects to use net proceeds to refinance short-term debt and to fund capital expenditures and working capital. As of October 9, 2025, short-term debt was approximately $399.0 million with a 4.26% weighted-average annual interest rate.