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SHORT-TERM AND LONG-TERM DEBT (Tables)
 3 Months Ended
Mar. 31, 2025
Debt Disclosure [Abstract]  
Borrowings Outstanding and Available under the Commercial Paper Programs
The amount of borrowings outstanding and available under the commercial paper programs were as follows:
Borrowings Outstanding as ofAvailable Borrowing Capacity as ofWeighted-Average Interest Rate as of
March 31, 2025December 31, 2024March 31, 2025December 31, 2024March 31, 2025December 31, 2024
(Millions of Dollars)
Eversource Parent Commercial Paper Program $1,381.6 $1,538.0 $618.4 $462.0 4.78 %4.76 %
NSTAR Electric Commercial Paper Program 108.5 504.8 541.5 145.2 4.43 %4.55 %
Summary of Long-Term Debt Issuance and Repayments The following table summarizes long-term debt issuances and repayments:
(Millions of Dollars)Interest RateIssuance/(Repayment)Issue Date or Repayment DateMaturity DateUse of Proceeds for Issuance/
Repayment Information
CL&P Series A First Mortgage Bonds4.95 %$400.0 January 2025January 2030Repaid short-term debt, paid capital expenditures and working capital
NSTAR Electric Debentures4.85 %400.0 February 2025March 2030Repay 3.25% Debentures at maturity, repaid short-term debt, paid capital expenditures and working capital
NSTAR Electric Debentures5.20 %400.0 February 2025March 2035Repay 3.25% Debentures at maturity, repaid short-term debt, paid capital expenditures and working capital
Eversource Parent Series H Senior Notes3.15 %(300.0)January 2025January 2025Paid at maturity
NSTAR Gas Series R First Mortgage Bonds2.33 %(75.0)May 2025May 2025Paid at maturity