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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 6 Months Ended
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Jun. 30, 2025
Accounting Policies [Abstract] |
Schedule of Allowance for Uncollectible Accounts | The activity in the allowance for uncollectible accounts by portfolio segment as of June 30th is as follows:
| Eversource |  | CL&P |  | NSTAR Electric |  | PSNH
(Millions of Dollars) | Hardship Accounts |  | Retail (Non-Hardship), Wholesale, and Other |  | Total Allowance |  | Hardship Accounts |  | Retail (Non-Hardship), Wholesale, and Other |  | Total Allowance |  | Hardship Accounts |  | Retail (Non-Hardship), Wholesale, and Other |  | Total Allowance |  | Total Allowance
Balance as of April 1, 2025 | $ | 371.5 |  |  | $ | 194.1 |  |  | $ | 565.6 |  |  | $ | 240.3 |  |  | $ | 35.9 |  |  | $ | 276.2 |  |  | $ | 57.8 |  |  | $ | 58.2 |  |  | $ | 116.0 |  |  | $ | 14.3 |
Uncollectible Expense | — |  |  | 18.6 |  |  | 18.6 |  |  | — |  |  | 5.4 |  |  | 5.4 |  |  | — |  |  | 6.5 |  |  | 6.5 |  |  | 1.1 |
Uncollectible Costs Deferred (1) | 14.9 |  |  | 11.8 |  |  | 26.7 |  |  | 3.2 |  |  | 2.9 |  |  | 6.1 |  |  | 3.2 |  |  | 5.8 |  |  | 9.0 |  |  | 1.2 |
Write-Offs | (9.6) |  |  | (29.6) |  |  | (39.2) |  |  | (7.3) |  |  | (8.1) |  |  | (15.4) |  |  | (0.7) |  |  | (12.1) |  |  | (12.8) |  |  | (1.8) |
Recoveries Collected | 0.2 |  |  | 3.7 |  |  | 3.9 |  |  | 0.1 |  |  | 1.2 |  |  | 1.3 |  |  | — |  |  | 1.5 |  |  | 1.5 |  |  | 0.2 |
Balance as of June 30, 2025 | $ | 377.0 |  |  | $ | 198.6 |  |  | $ | 575.6 |  |  | $ | 236.3 |  |  | $ | 37.3 |  |  | $ | 273.6 |  |  | $ | 60.3 |  |  | $ | 59.9 |  |  | $ | 120.2 |  |  | $ | 15.0 |
Balance as of January 1, 2025 | $ | 364.6 |  |  | $ | 191.6 |  |  | $ | 556.2 |  |  | $ | 240.7 |  |  | $ | 38.4 |  |  | $ | 279.1 |  |  | $ | 55.2 |  |  | $ | 59.7 |  |  | $ | 114.9 |  |  | $ | 14.1 |
Uncollectible Expense | — |  |  | 41.5 |  |  | 41.5 |  |  | — |  |  | 10.1 |  |  | 10.1 |  |  | — |  |  | 14.0 |  |  | 14.0 |  |  | 2.4 |
Uncollectible Costs Deferred (1) | 34.3 |  |  | 25.6 |  |  | 59.9 |  |  | 12.0 |  |  | 4.8 |  |  | 16.8 |  |  | 6.7 |  |  | 11.3 |  |  | 18.0 |  |  | 2.6 |
Write-Offs | (22.2) |  |  | (67.4) |  |  | (89.6) |  |  | (16.6) |  |  | (18.2) |  |  | (34.8) |  |  | (1.6) |  |  | (28.0) |  |  | (29.6) |  |  | (4.5) |
Recoveries Collected | 0.3 |  |  | 7.3 |  |  | 7.6 |  |  | 0.2 |  |  | 2.2 |  |  | 2.4 |  |  | — |  |  | 2.9 |  |  | 2.9 |  |  | 0.4 |
Balance as of June 30, 2025 | $ | 377.0 |  |  | $ | 198.6 |  |  | $ | 575.6 |  |  | $ | 236.3 |  |  | $ | 37.3 |  |  | $ | 273.6 |  |  | $ | 60.3 |  |  | $ | 59.9 |  |  | $ | 120.2 |  |  | $ | 15.0 |
| Eversource |  | CL&P |  | NSTAR Electric |  | PSNH
(Millions of Dollars) | Hardship Accounts |  | Retail (Non-Hardship), Wholesale, and Other |  | Total Allowance |  | Hardship Accounts |  | Retail (Non-Hardship), Wholesale, and Other |  | Total Allowance |  | Hardship Accounts |  | Retail (Non-Hardship), Wholesale, and Other |  | Total Allowance |  | Total Allowance
Balance as of April 1, 2024 | $ | 379.4 |  |  | $ | 190.7 |  |  | $ | 570.1 |  |  | $ | 271.8 |  |  | $ | 36.0 |  |  | $ | 307.8 |  |  | $ | 41.8 |  |  | $ | 55.9 |  |  | $ | 97.7 |  |  | $ | 13.8 |
Uncollectible Expense | — |  |  | 9.9 |  |  | 9.9 |  |  | — |  |  | 2.8 |  |  | 2.8 |  |  | — |  |  | 5.9 |  |  | 5.9 |  |  | 1.0 |
Uncollectible Costs Deferred (1) | 26.0 |  |  | 10.0 |  |  | 36.0 |  |  | 15.3 |  |  | 2.6 |  |  | 17.9 |  |  | 4.3 |  |  | 4.7 |  |  | 9.0 |  |  | 1.1 |
Write-Offs | (16.5) |  |  | (23.3) |  |  | (39.8) |  |  | (12.9) |  |  | (8.3) |  |  | (21.2) |  |  | (0.2) |  |  | (7.1) |  |  | (7.3) |  |  | (2.0) |
Recoveries Collected | 0.2 |  |  | 3.2 |  |  | 3.4 |  |  | 0.2 |  |  | 1.1 |  |  | 1.3 |  |  | — |  |  | 0.9 |  |  | 0.9 |  |  | 0.2 |
Balance as of June 30, 2024 | $ | 389.1 |  |  | $ | 190.5 |  |  | $ | 579.6 |  |  | $ | 274.4 |  |  | $ | 34.2 |  |  | $ | 308.6 |  |  | $ | 45.9 |  |  | $ | 60.3 |  |  | $ | 106.2 |  |  | $ | 14.1 |
Balance as of January 1, 2024 | $ | 366.8 |  |  | $ | 187.7 |  |  | $ | 554.5 |  |  | $ | 259.7 |  |  | $ | 36.3 |  |  | $ | 296.0 |  |  | $ | 43.6 |  |  | $ | 53.4 |  |  | $ | 97.0 |  |  | $ | 14.3 |
Uncollectible Expense | — |  |  | 26.3 |  |  | 26.3 |  |  | — |  |  | 6.3 |  |  | 6.3 |  |  | — |  |  | 12.0 |  |  | 12.0 |  |  | 2.2 |
Uncollectible Costs Deferred (1) | 53.5 |  |  | 21.4 |  |  | 74.9 |  |  | 38.1 |  |  | 5.3 |  |  | 43.4 |  |  | 3.5 |  |  | 9.1 |  |  | 12.6 |  |  | 2.4 |
Write-Offs | (31.7) |  |  | (51.8) |  |  | (83.5) |  |  | (23.8) |  |  | (16.0) |  |  | (39.8) |  |  | (1.2) |  |  | (16.3) |  |  | (17.5) |  |  | (5.2) |
Recoveries Collected | 0.5 |  |  | 6.9 |  |  | 7.4 |  |  | 0.4 |  |  | 2.3 |  |  | 2.7 |  |  | — |  |  | 2.1 |  |  | 2.1 |  |  | 0.4 |
Balance as of June 30, 2024 | $ | 389.1 |  |  | $ | 190.5 |  |  | $ | 579.6 |  |  | $ | 274.4 |  |  | $ | 34.2 |  |  | $ | 308.6 |  |  | $ | 45.9 |  |  | $ | 60.3 |  |  | $ | 106.2 |  |  | $ | 14.1 |
(1) These expected credit losses are deferred as regulatory costs on the balance sheets, as these amounts are ultimately recovered in rates. Amounts include uncollectible costs for hardship accounts and other customer receivables, including uncollectible amounts related to uncollectible energy supply costs.
Schedule of Components of Other Income, Net | The components of Other Income, Net on the statements of income were as follows:
| For the Three Months Ended
| June 30, 2025 |  | June 30, 2024
(Millions of Dollars) | Eversource |  | CL&P |  | NSTAR Electric |  | PSNH |  | Eversource |  | CL&P |  | NSTAR Electric |  | PSNH
Pension, SERP and PBOP Non-Service Income Components, Net of Deferred Portion | $ | 35.5 |  |  | $ | 9.3 |  |  | $ | 15.4 |  |  | $ | 4.6 |  |  | $ | 30.0 |  |  | $ | 7.2 |  |  | $ | 13.3 |  |  | $ | 3.7 |
AFUDC Equity | 25.6 |  |  | 1.5 |  |  | 14.7 |  |  | 4.5 |  |  | 23.7 |  |  | 5.5 |  |  | 15.2 |  |  | 1.7 |
Equity in Earnings of Unconsolidated Affiliates (1) | 4.8 |  |  | — |  |  | 0.2 |  |  | — |  |  | 23.2 |  |  | — |  |  | 0.2 |  |  | — |
Investment (Loss)/Income | (2.0) |  |  | (0.9) |  |  | (0.2) |  |  | (0.4) |  |  | 1.1 |  |  | (0.1) |  |  | 0.5 |  |  | — |
Interest Income | 30.8 |  |  | 2.5 |  |  | 17.6 |  |  | 5.0 |  |  | 37.1 |  |  | 10.4 |  |  | 19.2 |  |  | 2.4 |
Other | 0.7 |  |  | 0.1 |  |  | — |  |  | — |  |  | 0.2 |  |  | — |  |  | — |  |  | — |
Total Other Income, Net | $ | 95.4 |  |  | $ | 12.5 |  |  | $ | 47.7 |  |  | $ | 13.7 |  |  | $ | 115.3 |  |  | $ | 23.0 |  |  | $ | 48.4 |  |  | $ | 7.8 |
| For the Six Months Ended
| June 30, 2025 |  | June 30, 2024
(Millions of Dollars) | Eversource |  | CL&P |  | NSTAR Electric |  | PSNH |  | Eversource |  | CL&P |  | NSTAR Electric |  | PSNH
Pension, SERP and PBOP Non-Service Income Components, Net of Deferred Portion | $ | 68.1 |  |  | $ | 17.6 |  |  | $ | 30.2 |  |  | $ | 8.7 |  |  | $ | 57.8 |  |  | $ | 13.7 |  |  | $ | 25.6 |  |  | $ | 7.3 |
AFUDC Equity | 49.5 |  |  | 5.1 |  |  | 28.8 |  |  | 8.4 |  |  | 50.5 |  |  | 11.5 |  |  | 31.4 |  |  | 3.6 |
Equity in Earnings of Unconsolidated Affiliates (1) | 10.8 |  |  | — |  |  | 0.4 |  |  | — |  |  | 31.0 |  |  | — |  |  | 0.4 |  |  | — |
Investment (Loss)/Income | (4.0) |  |  | (0.8) |  |  | (2.0) |  |  | (0.3) |  |  | 0.3 |  |  | (0.9) |  |  | 0.9 |  |  | (0.2) |
Interest Income | 64.8 |  |  | 8.1 |  |  | 36.6 |  |  | 7.7 |  |  | 67.1 |  |  | 15.1 |  |  | 37.2 |  |  | 4.1 |
Other | (1.5) |  |  | 0.1 |  |  | — |  |  | — |  |  | (0.4) |  |  | — |  |  | — |  |  | — |
Total Other Income, Net | $ | 187.7 |  |  | $ | 30.1 |  |  | $ | 94.0 |  |  | $ | 24.5 |  |  | $ | 206.3 |  |  | $ | 39.4 |  |  | $ | 95.5 |  |  | $ | 14.8 |
(1) Equity in Earnings of Unconsolidated Affiliates includes $23.4 million of pre-tax income recorded at Eversource in the second quarter of 2024 from Eversource’s previous wind equity method investment, North East Offshore, as a result of a vendor settlement agreement payment received by the joint venture. This settlement payment reduced the required capital contributions to be made by Eversource to North East Offshore during the second quarter of 2024.
Schedule of Other Taxes | These gross receipts taxes are recorded separately with collections in Operating Revenues and with payments in Taxes Other Than Income Taxes on the statements of income as follows:
| For the Three Months Ended |  | For the Six Months Ended
(Millions of Dollars) | June 30, 2025 |  | June 30, 2024 |  | June 30, 2025 |  | June 30, 2024
Eversource | $ | 50.7 |  |  | $ | 44.6 |  |  | $ | 114.4 |  |  | $ | 97.9 |
CL&P | 45.6 |  |  | 39.7 |  |  | 98.5 |  |  | 83.6
Schedule of Non-Cash Investing Activities | Non-cash investing activities include plant additions included in Accounts Payable as follows:
(Millions of Dollars) | As of June 30, 2025 |  | As of June 30, 2024
Eversource | $ | 405.1 |  |  | $ | 477.9 |
CL&P | 73.1 |  |  | 89.2 |
NSTAR Electric | 124.6 |  |  | 142.2 |
PSNH | 67.7 |  |  | 86.5 |
Reconciliation of Cash Balances to Cash and Restricted Cash | The following table reconciles cash and cash equivalents as reported on the balance sheets to the cash, cash equivalents and restricted cash balance as reported on the statements of cash flows:
| As of June 30, 2025 |  | As of December 31, 2024
(Millions of Dollars) | Eversource |  | CL&P |  | NSTAR Electric |  | PSNH |  | Eversource |  | CL&P |  | NSTAR Electric |  | PSNH
Cash and Cash Equivalents as reported on the Balance Sheets | $ | 343.7 |  |  | $ | 99.2 |  |  | $ | 4.4 |  |  | $ | 0.1 |  |  | $ | 26.7 |  |  | $ | 1.1 |  |  | $ | 0.9 |  |  | $ | 1.4 |
Restricted cash included in: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Special Deposits | 67.6 |  |  | 1.1 |  |  | 2.2 |  |  | 31.3 |  |  | 75.8 |  |  | 1.0 |  |  | 8.1 |  |  | 32.7 |
Assets Held for Sale, Current | 5.9 |  |  | — |  |  | — |  |  | — |  |  | 5.8 |  |  | — |  |  | — |  |  | — |
Marketable Securities | 11.7 |  |  | — |  |  | — |  |  | — |  |  | 10.0 |  |  | — |  |  | — |  |  | — |
Other Long-Term Assets | 8.9 |  |  | — |  |  | — |  |  | 3.2 |  |  | 9.0 |  |  | — |  |  | — |  |  | 3.1 |
Cash, Cash Equivalents and Restricted Cash as reported on the Statements of Cash Flows | $ | 437.8 |  |  | $ | 100.3 |  |  | $ | 6.6 |  |  | $ | 34.6 |  |  | $ | 127.3 |  |  | $ | 2.1 |  |  | $ | 9.0 |  |  | $ | 37.2 |

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