XML 95 R67.htm IDEA: XBRL DOCUMENT
v3.25.0.1

LONG-TERM DEBT (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Debt Disclosure [Abstract] |
Schedule of Outstanding Long-Term Debt | The amount of borrowings outstanding and available under the commercial paper programs were as follows:
| Borrowings Outstanding as of December 31, |  | Available Borrowing Capacity as of December 31, |  | Weighted-Average Interest Rate as of December 31,
(Millions of Dollars) | 2024 |  | 2023 |  | 2024 |  | 2023 |  | 2024 |  | 2023
Eversource Parent Commercial Paper Program | $ | 1,538.0 |  |  | $ | 1,771.9 |  |  | $ | 462.0 |  |  | $ | 228.1 |  |  | 4.76 | % |  | 5.60 | %
NSTAR Electric Commercial Paper Program | 504.8 |  |  | 365.8 |  |  | 145.2 |  |  | 284.2 |  |  | 4.55 | % |  | 5.40 | %
Details of long-term debt outstanding are as follows:
CL&P (Millions of Dollars) |  |  | As of December 31,
Interest Rate |  | 2024 |  | 2023
First Mortgage Bonds: |  |  |  |  |
1994 Series D due 2024 | 7.875 | % |  | $ | — |  |  | $ | 139.8 |
2004 Series B due 2034 | 5.750 | % |  | 130.0 |  |  | 130.0 |
2005 Series B due 2035 | 5.625 | % |  | 100.0 |  |  | 100.0 |
2006 Series A due 2036 | 6.350 | % |  | 250.0 |  |  | 250.0 |
2007 Series B due 2037 | 5.750 | % |  | 150.0 |  |  | 150.0 |
2007 Series D due 2037 | 6.375 | % |  | 100.0 |  |  | 100.0 |
2014 Series A due 2044 | 4.300 | % |  | 475.0 |  |  | 475.0 |
2015 Series A due 2045 | 4.150 | % |  | 350.0 |  |  | 350.0 |
2017 Series A due 2027 | 3.200 | % |  | 500.0 |  |  | 500.0 |
2018 Series A due 2048 | 4.000 | % |  | 800.0 |  |  | 800.0 |
2020 Series A due 2025 | 0.750 | % |  | 400.0 |  |  | 400.0 |
2021 Series A due 2031 | 2.050 | % |  | 425.0 |  |  | 425.0 |
2023 Series A due 2053 | 5.250 | % |  | 500.0 |  |  | 500.0 |
2023 Series B due 2033 | 4.900 | % |  | 300.0 |  |  | 300.0 |
2024 Series A due 2029 | 4.650 | % |  | 350.0 |  |  | — |
2024 Series B due 2034 | 4.950 | % |  | 300.0 |  |  | — |
Total First Mortgage Bonds |  |  | 5,130.0 |  |  | 4,619.8 |
Less Amounts due Within One Year |  |  | (400.0) |  |  | (139.8) |
Current Portion Classified as Long-Term Debt (1) |  |  | 397.1 |  |  | 139.8 |
Commercial Paper Classified as Long-Term Debt (See Note 8, Short-Term Debt) |  |  | — |  |  | 207.3 |
Unamortized Premiums and Discounts, Net |  |  | 14.3 |  |  | 18.0 |
Unamortized Debt Issuance Costs |  |  | (33.2) |  |  | (30.7) |
CL&P Long-Term Debt |  |  | $ | 5,108.2 |  |  | $ | 4,814.4 |
NSTAR Electric (Millions of Dollars) |  |  | As of December 31,
Interest Rate |  | 2024 |  | 2023
Debentures: |  |  |  |  |
2006 Debentures due 2036 | 5.750 | % |  | $ | 200.0 |  |  | $ | 200.0 |
2010 Debentures due 2040 | 5.500 | % |  | 300.0 |  |  | 300.0 |
2014 Debentures due 2044 | 4.400 | % |  | 300.0 |  |  | 300.0 |
2015 Debentures due 2025 | 3.250 | % |  | 250.0 |  |  | 250.0 |
2016 Debentures due 2026 | 2.700 | % |  | 250.0 |  |  | 250.0 |
2017 Debentures due 2027 | 3.200 | % |  | 700.0 |  |  | 700.0 |
2019 Debentures due 2029 | 3.250 | % |  | 400.0 |  |  | 400.0 |
2020 Debentures due 2030 | 3.950 | % |  | 400.0 |  |  | 400.0 |
2021 Debentures due 2051 | 3.100 | % |  | 300.0 |  |  | 300.0 |
2021 Debentures due 2031 | 1.950 | % |  | 300.0 |  |  | 300.0 |
2022 Debentures due 2052 | 4.550 | % |  | 450.0 |  |  | 450.0 |
2022 Debentures due 2052 | 4.950 | % |  | 400.0 |  |  | 400.0 |
2023 Debentures due 2028 | 5.600 | % |  | 150.0 |  |  | 150.0 |
2024 Debentures due 2034 | 5.400 | % |  | 600.0 |  |  | — |
Total Debentures |  |  | 5,000.0 |  |  | 4,400.0 |
Notes: |  |  |  |  |
2004 Senior Notes Series B due 2034 | 5.900 | % |  | 50.0 |  |  | 50.0 |
2007 Senior Notes Series D due 2037 | 6.700 | % |  | 40.0 |  |  | 40.0 |
2016 Senior Notes Series H due 2026 | 2.750 | % |  | 50.0 |  |  | 50.0 |
Total Notes |  |  | 140.0 |  |  | 140.0 |
Less Amounts due Within One Year |  |  | (250.0) |  |  | — |
Unamortized Premiums and Discounts, Net |  |  | (14.0) |  |  | (14.0) |
Unamortized Debt Issuance Costs |  |  | (31.1) |  |  | (29.1) |
NSTAR Electric Long-Term Debt |  |  | $ | 4,844.9 |  |  | $ | 4,496.9 |
PSNH (Millions of Dollars) |  |  | As of December 31,
Interest Rate |  | 2024 |  | 2023
First Mortgage Bonds: |  |  |  |  |
2005 Series M due 2035 | 5.600 | % |  | $ | 50.0 |  |  | $ | 50.0 |
2019 Series T due 2049 | 3.600 | % |  | 300.0 |  |  | 300.0 |
2020 Series U due 2050 | 2.400 | % |  | 150.0 |  |  | 150.0 |
2021 Series V due 2031 | 2.200 | % |  | 350.0 |  |  | 350.0 |
2023 Series W due 2053 | 5.150 | % |  | 300.0 |  |  | 300.0 |
2023 Series X due 2033 | 5.350 | % |  | 600.0 |  |  | 300.0 |
Total First Mortgage Bonds |  |  | 1,750.0 |  |  | 1,450.0 |
Unamortized Premiums and Discounts, Net |  |  | (2.6) |  |  | (4.9) |
Unamortized Debt Issuance Costs |  |  | (15.3) |  |  | (13.5) |
PSNH Long-Term Debt |  |  | $ | 1,732.1 |  |  | $ | 1,431.6 |
OTHER (Millions of Dollars) |  |  |  |  | As of December 31,
Interest Rate |  | 2024 |  | 2023
Eversource Parent - Senior Notes due 2025 - 2050 | 0.800 | % | - | 5.950% |  | $ | 11,350.0 |  |  | $ | 10,300.0 |
Yankee Gas - First Mortgage Bonds due 2025 - 2051 | 1.380 | % | - | 5.740% |  | 1,095.0 |  |  | 1,015.0 |
NSTAR Gas - First Mortgage Bonds due 2025 - 2051 | 2.250 | % | - | 7.110% |  | 905.0 |  |  | 705.0 |
EGMA - First Mortgage Bonds due 2028 - 2052 | 2.110 | % | - | 5.730% |  | 808.0 |  |  | 708.0 |
Aquarion - Senior Notes due 2024 | 4.000% |  | — |  |  | 360.0 |
Aquarion - Unsecured Notes due 2028 - 2052 (2) | 3.000 | % | - | 6.430% |  | 596.8 |  |  | 527.0 |
Aquarion - Secured Debt due 2027 - 2045 (2) | 1.296 | % | - | 9.290% |  | 40.7 |  |  | 39.0 |
Pre-1983 Spent Nuclear Fuel Obligation (CYAPC) |  |  |  |  | 5.6 |  |  | 12.5 |
Fair Value Adjustment (3) |  |  |  |  | — |  |  | 19.3 |
Less Fair Value Adjustment - Current Portion (3) |  |  |  |  | — |  |  | (5.5) |
Less Amounts due in One Year |  |  |  |  | (750.3) |  |  | (1,810.2) |
Current Portion Classified as Long-Term Debt (1) |  |  |  |  | — |  |  | 990.9 |
Unamortized Premiums and Discounts, Net |  |  |  |  | 41.7 |  |  | 49.7 |
Unamortized Debt Issuance Costs |  |  |  |  | (76.1) |  |  | (65.0) |
Total Other Long-Term Debt |  |  |  |  | $ | 14,016.4 |  |  | $ | 12,845.7 |
Total Eversource Long-Term Debt |  |  |  |  | $ | 25,701.6 |  |  | $ | 23,588.6 |
(1) As a result of the CL&P long-term debt issuance in January 2025, $397.1 million of current portion of long-term debt was reclassified to Long-Term Debt on Eversource’s and CL&P’s balance sheets as of December 31, 2024. As a result of the CL&P and Eversource parent long-term debt issuances in January 2024, $139.8 million and $990.9 million, respectively, of current portion of long-term debt were reclassified to Long-Term Debt on CL&P’s and Eversource parent’s balance sheets as of December 31, 2023. (2) In January 2025, Eversource entered into an agreement to sell Aquarion. Upon close of the sale, Aquarion’s long-term debt will be repaid by Eversource and has therefore not been classified as held for sale. The sale is expected to close in late 2025. (3) The fair value adjustment amount is the purchase price adjustments, net of amortization, required to record long-term debt at fair value on the dates of the 2012 merger with NSTAR and the 2017 acquisition of Aquarion. As of December 31, 2024, the fair value adjustments were only related to the Aquarion acquisition and were reclassified to Liabilities Held for Sale.
Schedule of Issuance and Repayments of Long-Term Debt | The following table summarizes long-term debt issuances and repayments:
(Millions of Dollars) | Interest Rate |  | Issuance/ (Repayment) |  | Issue Date or Repayment Date |  | Maturity Date |  | Use of Proceeds for Issuance/ Repayment Information
CL&P 2024 Series A First Mortgage Bonds | 4.65 | % |  | $ | 350.0 |  |  | January 2024 |  | January 2029 |  | Repaid short-term debt, paid capital expenditures and working capital
CL&P Series B First Mortgage Bonds | 4.95 | % |  | 300.0 |  |  | August 2024 |  | August 2034 |  | Repaid Series D Bonds, repaid short-term debt, and working capital
CL&P Series D First Mortgage Bonds | 7.875 | % |  | (139.8) |  |  | October 2024 |  | October 2024 |  | Paid at maturity
CL&P 2025 Series A First Mortgage Bonds | 4.95 | % |  | 400.0 |  |  | January 2025 |  | January 2030 |  | Repaid short-term debt, paid capital expenditures and working capital
NSTAR Electric Debentures | 5.40 | % |  | 600.0 |  |  | May 2024 |  | June 2034 |  | Repaid short-term debt, paid capital expenditures and working capital
PSNH Series X First Mortgage Bonds | 5.35 | % |  | 300.0 |  |  | April 2024 |  | October 2033 |  | Repaid short-term debt, paid capital expenditures and working capital
Eversource Parent Series DD Senior Notes | 5.00 | % |  | 350.0 |  |  | January 2024 |  | January 2027 |  | Repaid short-term debt
Eversource Parent Series EE Senior Notes | 5.50 | % |  | 650.0 |  |  | January 2024 |  | January 2034 |  | Repaid short-term debt
Eversource Parent Series FF Senior Notes | 5.85 | % |  | 700.0 |  |  | April 2024 |  | April 2031 |  | Repaid Series X Senior Notes and Aquarion’s 2014 Senior Notes at maturity and short-term debt
Eversource Parent Series GG Senior Notes | 5.95 | % |  | 700.0 |  |  | April 2024 |  | July 2034 |  | Repaid Series X Senior Notes and Aquarion’s 2014 Senior Notes at maturity and short-term debt
Eversource Parent Series X Senior Notes | 4.20 | % |  | (900.0) |  |  | June 2024 |  | June 2024 |  | Paid at maturity
Eversource Parent Series L Senior Notes | 2.90 | % |  | (450.0) |  |  | October 2024 |  | October 2024 |  | Paid at maturity
Eversource Parent Series H Senior Notes | 3.15 | % |  | (300.0) |  |  | January 2025 |  | January 2025 |  | Paid at maturity
NSTAR Gas Series W First Mortgage Bonds | 5.29 | % |  | 160.0 |  |  | June 2024 |  | June 2029 |  | Repaid short-term debt, paid capital expenditures and general corporate purposes
NSTAR Gas Series X First Mortgage Bonds | 5.48 | % |  | 40.0 |  |  | June 2024 |  | June 2034 |  | Repaid short-term debt, paid capital expenditures and general corporate purposes
Yankee Gas Series W First Mortgage Bonds | 5.50 | % |  | 90.0 |  |  | July 2024 |  | July 2029 |  | Repaid short-term debt, paid capital expenditures, working capital and repaid Series P bonds at maturity
Yankee Gas Series X First Mortgage Bonds | 5.74 | % |  | 90.0 |  |  | July 2024 |  | July 2034 |  | Repaid short-term debt, paid capital expenditures, working capital and repaid Series P bonds at maturity
Yankee Gas Series P First Mortgage Bonds | 2.23 | % |  | (100.0) |  |  | October 2024 |  | October 2024 |  | Paid at maturity
EGMA Series E First Mortgage Bonds | 5.17 | % |  | 100.0 |  |  | October 2024 |  | November 2034 |  | Refinanced existing indebtedness, paid capital expenditures and general corporate purposes
Aquarion Senior Notes | 4.00 | % |  | (360.0) |  |  | August 2024 |  | August 2024 |  | Paid at maturity
Aquarion Water Company of Connecticut Senior Notes | 5.57 | % |  | 70.0 |  |  | August 2024 |  | September 2034 |  | Repaid short-term debt, paid capital expenditures and general corporate purposes
Schedule of Maturities of Long-Term Debt Outstanding | Long-term debt maturities on debt outstanding for the years 2025 through 2029 and thereafter are shown below. These amounts exclude PSNH rate reduction bonds, CYAPC pre-1983 spent nuclear fuel obligation, and unamortized premiums, discounts, and debt issuance costs as of December 31, 2024:
(Millions of Dollars) | Eversource |  | CL&P |  | NSTAR Electric |  | PSNH
2025 | $ | 1,400.3 |  |  | $ | 400.0 |  |  | $ | 250.0 |  |  | $ | — |
2026 | 1,390.2 |  |  | — |  |  | 300.0 |  |  | — |
2027 | 2,889.2 |  |  | 500.0 |  |  | 700.0 |  |  | — |
2028 | 1,978.5 |  |  | — |  |  | 150.0 |  |  | — |
2029 | 2,300.3 |  |  | 350.0 |  |  | 400.0 |  |  | — |
Thereafter | 16,857.0 |  |  | 3,880.0 |  |  | 3,340.0 |  |  | 1,750.0 |
Total | $ | 26,815.5 |  |  | $ | 5,130.0 |  |  | $ | 5,140.0 |  |  | $ | 1,750.0 |

X
- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69E -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69E Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477734/942-470-50-3 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-8 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-6 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-7 + Details
Name: | us-gaap_ScheduleOfDebtInstrumentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturity and sinking fund requirement for long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 470 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481544/470-10-50-1 + Details
Name: | us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration