| For the Three Months Ended March 31, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Activities: |
|---|
| Net Income | $139,329 | $156,236 |
|---|
| Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |
|---|
| Depreciation | 111,745 | 106,680 |
|---|
| Deferred Income Taxes | (39,096) | (35,411) |
|---|
| Uncollectible Expense | 5,491 | 4,671 |
|---|
| Pension, SERP, and PBOP Income, Net | (4,860) | (3,614) |
|---|
| Regulatory Under Recoveries, Net | (19,603) | (103,101) |
|---|
| Amortization of Regulatory Assets, Net | 280,022 | 343,213 |
|---|
| Cost of Removal Expenditures | (9,053) | (16,072) |
|---|
| Other | 25,601 | 826 |
|---|
| Changes in Current Assets and Liabilities: |
|---|
| Receivables and Unbilled Revenues, Net | (91,971) | 4,910 |
|---|
| Taxes Receivable/Accrued, Net | (80,105) | 57,653 |
|---|
| Accounts Payable | (50,494) | (51,626) |
|---|
| Other Current Assets and Liabilities, Net | (41,910) | (41,659) |
|---|
| Net Cash Flows Provided by Operating Activities | 225,096 | 422,706 |
|---|
| Investing Activities: |
|---|
| Investments in Property, Plant and Equipment | (248,359) | (223,555) |
|---|
| Net Cash Flows Used in Investing Activities | (248,359) | (223,555) |
|---|
| Financing Activities: |
|---|
| Cash Dividends on Common Stock | (88,400) | (247,000) |
|---|
| Cash Dividends on Preferred Stock | (1,390) | (1,390) |
|---|
| Issuance of Long-Term Debt | — | 400,000 |
|---|
| Increase/(Decrease) in Notes Payable to Eversource Parent | 39,000 | (280,000) |
|---|
| Other Financing Activities | (506) | (4,153) |
|---|
| Net Cash Flows Used in Financing Activities | (51,296) | (132,543) |
|---|
| Net (Decrease)/Increase in Cash and Restricted Cash | (74,559) | 66,608 |
|---|
| Cash and Restricted Cash - Beginning of Period | 88,676 | 2,109 |
|---|
| Cash and Restricted Cash - End of Period | $14,117 | $68,717 |
|---|
| (Thousands of Dollars) | As of March 31, 2026 | As of December 31, 2025 |
|---|
| ASSETS |
|---|
| Current Assets: |
|---|
| Cash | $190,821 | $8,302 |
|---|
| Receivables, Net (net of allowance for uncollectible accounts of $127,113 and $132,561 as of March 31, 2026 and December 31, 2025, respectively) | 575,045 | 616,280 |
|---|
| Accounts Receivable from Affiliated Companies | 201,003 | 280,099 |
|---|
| Unbilled Revenues | 45,989 | 56,948 |
|---|
| Materials, Supplies and REC Inventory | 234,150 | 210,865 |
|---|
| Regulatory Assets | 1,018,886 | 978,754 |
|---|
| Derivative Assets | 131,156 | 91,011 |
|---|
| Prepayments and Other Current Assets | 15,606 | 90,040 |
|---|
| Total Current Assets | 2,412,656 | 2,332,299 |
|---|
| Property, Plant and Equipment, Net | 15,569,419 | 15,308,896 |
|---|
| Deferred Debits and Other Assets: |
|---|
| Regulatory Assets | 1,805,604 | 1,823,522 |
|---|
| Prepaid Pension and PBOP | 826,909 | 804,109 |
|---|
| Other Long-Term Assets | 275,491 | 264,073 |
|---|
| Total Deferred Debits and Other Assets | 2,908,004 | 2,891,704 |
|---|
| Total Assets | $20,890,079 | $20,532,899 |
|---|
| LIABILITIES AND CAPITALIZATION |
|---|
| Current Liabilities: |
|---|
| Notes Payable | $— | $245,445 |
|---|
| Long-Term Debt – Current Portion | 300,000 | 300,000 |
|---|
| Accounts Payable | 566,106 | 558,227 |
|---|
| Accounts Payable to Affiliated Companies | 187,528 | 198,085 |
|---|
| Obligations to Third-Party Suppliers | 183,320 | 179,757 |
|---|
| Renewable Portfolio Standards Compliance Obligations | 117,185 | 98,648 |
|---|
| Regulatory Liabilities | 835,408 | 650,813 |
|---|
| Other Current Liabilities | 148,805 | 110,331 |
|---|
| Total Current Liabilities | 2,338,352 | 2,341,306 |
|---|
| Deferred Credits and Other Liabilities: |
|---|
| Accumulated Deferred Income Taxes | 2,110,852 | 2,087,287 |
|---|
| Regulatory Liabilities | 1,722,355 | 1,702,059 |
|---|
| Derivative Liabilities | 636,179 | 753,149 |
|---|
| Other Long-Term Liabilities | 410,335 | 401,625 |
|---|
| Total Deferred Credits and Other Liabilities | 4,879,721 | 4,944,120 |
|---|
| Long-Term Debt | 5,646,738 | 5,645,638 |
|---|
| Preferred Stock Not Subject to Mandatory Redemption | 43,000 | 43,000 |
|---|
| Common Stockholder's Equity: |
|---|
| Common Stock | — | — |
|---|
| Capital Surplus, Paid In | 4,496,842 | 4,238,842 |
|---|
| Retained Earnings | 3,485,228 | 3,319,768 |
|---|
| Accumulated Other Comprehensive Income | 198 | 225 |
|---|
| Common Stockholder's Equity | 7,982,268 | 7,558,835 |
|---|
| Commitments and Contingencies (Note 9) |
|---|
| Total Liabilities and Capitalization | $20,890,079 | $20,532,899 |
|---|
| For the Three Months Ended March 31, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Revenues | $1,131,088 | $1,014,227 |
|---|
| Operating Expenses: |
|---|
| Purchased Power and Transmission | 310,158 | 308,946 |
|---|
| Operations and Maintenance | 196,670 | 174,137 |
|---|
| Depreciation | 119,337 | 108,014 |
|---|
| Amortization of Regulatory Assets, Net | 74,716 | 52,284 |
|---|
| Energy Efficiency Programs | 108,253 | 63,438 |
|---|
| Taxes Other Than Income Taxes | 75,709 | 75,839 |
|---|
| Total Operating Expenses | 884,843 | 782,658 |
|---|
| Operating Income | 246,245 | 231,569 |
|---|
| Interest Expense | 80,275 | 59,220 |
|---|
| Other Income, Net | 51,684 | 46,292 |
|---|
| Income Before Income Tax Expense | 217,654 | 218,641 |
|---|
| Income Tax Expense | 51,704 | 51,466 |
|---|
| Net Income | $165,950 | $167,175 |
|---|
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
| For the Three Months Ended March 31, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Net Income | $165,950 | $167,175 |
|---|
| Other Comprehensive Loss, Net of Tax: |
|---|
| Changes in Funded Status of SERP Benefit Plan | (32) | (7) |
|---|
| Qualified Cash Flow Hedging Instruments | 5 | 5 |
|---|
| Other Comprehensive Loss, Net of Tax | (27) | (2) |
|---|
| Comprehensive Income | $165,923 | $167,173 |
|---|
CONDENSED CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY
| For the Three Months Ended March 31, 2026 |
|---|
| Common Stock · CapitalSurplus,Paid In · RetainedEarnings · AccumulatedOtherComprehensiveIncome · TotalCommonStockholder'sEquity |
|---|
| (Thousands of Dollars, Except Stock Information) · Stock · Amount |
|---|
| Balance as of January 1, 2026 | 200 | $— | | $4,238,842 | | $3,319,768 | $225 | $7,558,835 |
|---|
| Net Income | | 165,950 | | 165,950 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Capital Contributions from Eversource Parent | | 258,000 | | 258,000 | |
|---|
| Other Comprehensive Loss | | (27) | (27) | |
|---|
| Balance as of March 31, 2026 | 200 | $— | | $4,496,842 | | $3,485,228 | $198 | $7,982,268 |
|---|
| For the Three Months Ended March 31, 2025 |
|---|
| Common Stock · CapitalSurplus,Paid In · RetainedEarnings · AccumulatedOtherComprehensiveLoss · TotalCommonStockholder'sEquity |
|---|
| (Thousands of Dollars, Except Stock Information) · Stock · Amount |
|---|
| Balance as of January 1, 2025 | 200 | $— | | $3,788,842 | | $3,127,105 | $(141) | $6,915,806 |
|---|
| Net Income | | 167,175 | | 167,175 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Dividends on Common Stock | | (436,000) | | (436,000) | |
|---|
| Capital Contributions from Eversource Parent | | 100,000 | | 100,000 | |
|---|
| Other Comprehensive Loss | | (2) | (2) | |
|---|
| Balance as of March 31, 2025 | 200 | $— | | $3,888,842 | | $2,857,790 | $(143) | $6,746,489 |
|---|
| For the Three Months Ended March 31, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Activities: |
|---|
| Net Income | $165,950 | $167,175 |
|---|
| Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |
|---|
| Depreciation | 119,337 | 108,014 |
|---|
| Deferred Income Taxes | 12,431 | (10,197) |
|---|
| Uncollectible Expense | 8,299 | 7,485 |
|---|
| Pension, SERP and PBOP Income, Net | (11,511) | (10,161) |
|---|
| Regulatory Over Recoveries, Net | 67,682 | 78,429 |
|---|
| Amortization of Regulatory Assets, Net | 74,716 | 52,284 |
|---|
| Cost of Removal Expenditures | (6,092) | (16,903) |
|---|
| Other | (22,321) | (7,333) |
|---|
| Changes in Current Assets and Liabilities: |
|---|
| Receivables and Unbilled Revenues, Net | 111,590 | (114,975) |
|---|
| Taxes Receivable/Accrued, Net | 54,123 | 78,295 |
|---|
| Accounts Payable | (50,973) | 3,771 |
|---|
| Other Current Assets and Liabilities, Net | 11,458 | (24,456) |
|---|
| Net Cash Flows Provided by Operating Activities | 534,689 | 311,428 |
|---|
| Investing Activities: |
|---|
| Investments in Property, Plant and Equipment | (381,725) | (367,462) |
|---|
| Net Cash Flows Used in Investing Activities | (381,725) | (367,462) |
|---|
| Financing Activities: |
|---|
| Cash Dividends on Common Stock | — | (436,000) |
|---|
| Cash Dividends on Preferred Stock | (490) | (490) |
|---|
| Issuance of Long-Term Debt | — | 800,000 |
|---|
| Capital Contributions from Eversource Parent | 258,000 | 100,000 |
|---|
| Decrease in Notes Payable | (245,445) | (396,282) |
|---|
| Other Financing Activities | (152) | (9,114) |
|---|
| Net Cash Flows Provided by Financing Activities | 11,913 | 58,114 |
|---|
| Net Increase in Cash and Restricted Cash | 164,877 | 2,080 |
|---|
| Cash and Restricted Cash - Beginning of Period | 25,944 | 9,023 |
|---|
| Cash and Restricted Cash - End of Period | $190,821 | $11,103 |
|---|
| (Thousands of Dollars) | As of March 31, 2026 | As of December 31, 2025 |
|---|
| ASSETS |
|---|
| Current Assets: |
|---|
| Cash | $3,096 | $13,665 |
|---|
| Receivables, Net (net of allowance for uncollectible accounts of $24,304 and $23,547 as of March 31, 2026 and December 31, 2025, respectively) | 240,524 | 214,117 |
|---|
| Accounts Receivable from Affiliated Companies | 25,869 | 24,338 |
|---|
| Unbilled Revenues | 53,816 | 62,446 |
|---|
| Materials, Supplies and REC Inventory | 63,988 | 58,879 |
|---|
| Regulatory Assets | 101,449 | 119,871 |
|---|
| Special Deposits | 22,274 | 38,343 |
|---|
| Prepayments and Other Current Assets | 2,239 | 19,212 |
|---|
| Total Current Assets | 513,255 | 550,871 |
|---|
| Property, Plant and Equipment, Net | 5,569,694 | 5,507,663 |
|---|
| Deferred Debits and Other Assets: |
|---|
| Regulatory Assets | 870,534 | 841,203 |
|---|
| Prepaid Pension and PBOP | 117,031 | 111,833 |
|---|
| Other Long-Term Assets | 20,774 | 17,661 |
|---|
| Total Deferred Debits and Other Assets | 1,008,339 | 970,697 |
|---|
| Total Assets | $7,091,288 | $7,029,231 |
|---|
| LIABILITIES AND CAPITALIZATION |
|---|
| Current Liabilities: |
|---|
| Notes Payable to Eversource Parent | $79,400 | $49,300 |
|---|
| Rate Reduction Bonds – Current Portion | 43,210 | 43,210 |
|---|
| Accounts Payable | 139,305 | 179,137 |
|---|
| Accounts Payable to Affiliated Companies | 52,583 | 45,277 |
|---|
| Obligations to Third-Party Suppliers | 36,361 | 37,584 |
|---|
| Accrued Interest | 31,300 | 35,224 |
|---|
| Regulatory Liabilities | 134,115 | 118,443 |
|---|
| Other Current Liabilities | 71,076 | 62,334 |
|---|
| Total Current Liabilities | 587,350 | 570,509 |
|---|
| Deferred Credits and Other Liabilities: |
|---|
| Accumulated Deferred Income Taxes | 817,188 | 806,270 |
|---|
| Regulatory Liabilities | 425,128 | 417,442 |
|---|
| Other Long-Term Liabilities | 53,482 | 46,669 |
|---|
| Total Deferred Credits and Other Liabilities | 1,295,798 | 1,270,381 |
|---|
| Long-Term Debt | 2,031,850 | 2,031,323 |
|---|
| Rate Reduction Bonds | 259,257 | 280,862 |
|---|
| Common Stockholder's Equity: |
|---|
| Common Stock | — | — |
|---|
| Capital Surplus, Paid In | 1,973,134 | 1,973,134 |
|---|
| Retained Earnings | 943,899 | 903,022 |
|---|
| Common Stockholder's Equity | 2,917,033 | 2,876,156 |
|---|
| Commitments and Contingencies (Note 9) |
|---|
| Total Liabilities and Capitalization | $7,091,288 | $7,029,231 |
|---|
| For the Three Months Ended March 31, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Revenues | $383,517 | $347,981 |
|---|
| Operating Expenses: |
|---|
| Purchased Power and Transmission | 89,195 | 80,007 |
|---|
| Operations and Maintenance | 61,540 | 71,009 |
|---|
| Depreciation | 44,439 | 40,502 |
|---|
| Amortization of Regulatory Assets, Net | 26,650 | 20,835 |
|---|
| Energy Efficiency Programs | 10,489 | 12,202 |
|---|
| Taxes Other Than Income Taxes | 27,285 | 25,789 |
|---|
| Total Operating Expenses | 259,598 | 250,344 |
|---|
| Operating Income | 123,919 | 97,637 |
|---|
| Interest Expense | 28,617 | 20,569 |
|---|
| Other Income, Net | 10,502 | 10,758 |
|---|
| Income Before Income Tax Expense | 105,804 | 87,826 |
|---|
| Income Tax Expense | 26,027 | 21,547 |
|---|
| Net Income | $79,777 | $66,279 |
|---|
CONDENSED CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY
| For the Three Months Ended March 31, 2026 |
|---|
| Common Stock · CapitalSurplus,Paid In · RetainedEarnings · TotalCommonStockholder'sEquity |
|---|
| (Thousands of Dollars, Except Stock Information) · Stock · Amount |
|---|
| Balance as of January 1, 2026 | 301 | $— | $1,973,134 | $903,022 | $2,876,156 |
|---|
| Net Income | | 79,777 | 79,777 | |
|---|
| Dividends on Common Stock | | (38,900) | (38,900) | |
|---|
| Balance as of March 31, 2026 | 301 | $— | $1,973,134 | $943,899 | $2,917,033 |
|---|
| For the Three Months Ended March 31, 2025 |
|---|
| Common Stock · CapitalSurplus,Paid In · RetainedEarnings · TotalCommonStockholder'sEquity |
|---|
| (Thousands of Dollars, Except Stock Information) · Stock · Amount |
|---|
| Balance as of January 1, 2025 | 301 | $— | | $1,898,134 | $808,668 | $2,706,802 |
|---|
| Net Income | | 66,279 | 66,279 | |
|---|
| Capital Contributions from Eversource Parent | | 75,000 | | 75,000 | |
|---|
| Balance as of March 31, 2025 | 301 | $— | | $1,973,134 | $874,947 | $2,848,081 |
|---|
| For the Three Months Ended March 31, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Activities: |
|---|
| Net Income | $79,777 | $66,279 |
|---|
| Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |
|---|
| Depreciation | 44,439 | 40,502 |
|---|
| Deferred Income Taxes | 9,324 | 11,127 |
|---|
| Uncollectible Expense | 1,442 | 1,315 |
|---|
| Pension, SERP and PBOP Income, Net | (2,679) | (2,211) |
|---|
| Regulatory Under Recoveries, Net | (24,930) | (35,625) |
|---|
| Amortization of Regulatory Assets, Net | 26,650 | 20,835 |
|---|
| Cost of Removal Expenditures | (5,159) | (5,894) |
|---|
| Other | 2,394 | (4,195) |
|---|
| Changes in Current Assets and Liabilities: |
|---|
| Receivables and Unbilled Revenues, Net | (23,426) | (6,051) |
|---|
| Taxes Receivable/Accrued, Net | 8,975 | (3,018) |
|---|
| Accounts Payable | (10,390) | 7,498 |
|---|
| Other Current Assets and Liabilities, Net | 7,934 | 8,856 |
|---|
| Net Cash Flows Provided by Operating Activities | 114,351 | 99,418 |
|---|
| Investing Activities: |
|---|
| Investments in Property, Plant and Equipment | (110,465) | (143,315) |
|---|
| Net Cash Flows Used in Investing Activities | (110,465) | (143,315) |
|---|
| Financing Activities: |
|---|
| Cash Dividends on Common Stock | (38,900) | — |
|---|
| Capital Contributions from Eversource Parent | — | 75,000 |
|---|
| Repayment of Rate Reduction Bonds | (21,605) | (21,605) |
|---|
| Increase/(Decrease) in Notes Payable to Eversource Parent | 30,100 | (16,600) |
|---|
| Other Financing Activities | (118) | — |
|---|
| Net Cash Flows (Used in)/Provided by Financing Activities | (30,523) | 36,795 |
|---|
| Net Decrease in Cash and Restricted Cash | (26,637) | (7,102) |
|---|
| Cash and Restricted Cash - Beginning of Period | 55,186 | 37,243 |
|---|
| Cash and Restricted Cash - End of Period | $28,549 | $30,141 |
|---|