| For the Nine Months Ended September 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Activities: |
|---|
| Net Income | $379,552 | $429,511 |
|---|
| Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |
|---|
| Depreciation | 338,393 | 322,815 |
|---|
| Deferred Income Taxes | 16,785 | (84,604) |
|---|
| Uncollectible Expense | 14,247 | 16,105 |
|---|
| Pension, SERP, and PBOP Income, Net | (13,560) | (10,551) |
|---|
| Regulatory Over Recoveries, Net | 225,725 | 78,426 |
|---|
| Amortization of Regulatory Assets, Net | 36,742 | 529,240 |
|---|
| Cost of Removal Expenditures | (48,036) | (44,989) |
|---|
| Other | (3,204) | 33,904 |
|---|
| Changes in Current Assets and Liabilities: |
|---|
| Receivables and Unbilled Revenues, Net | 30,679 | 626 |
|---|
| Taxes Receivable/Accrued, Net | (163,843) | 77,239 |
|---|
| Accounts Payable | (88,746) | (150,690) |
|---|
| Other Current Assets and Liabilities, Net | (51,774) | (69,230) |
|---|
| Net Cash Flows Provided by Operating Activities | 672,960 | 1,127,802 |
|---|
| Investing Activities: |
|---|
| Investments in Property, Plant and Equipment | (748,290) | (657,416) |
|---|
| Net Cash Flows Used in Investing Activities | (748,290) | (657,416) |
|---|
| Financing Activities: |
|---|
| Cash Dividends on Common Stock | (290,200) | (430,000) |
|---|
| Cash Dividends on Preferred Stock | (4,169) | (4,169) |
|---|
| Issuance of Long-Term Debt | — | 400,000 |
|---|
| Increase/(Decrease) in Notes Payable to Eversource Parent | 293,700 | (280,000) |
|---|
| Other Financing Activities | (1,324) | (4,892) |
|---|
| Net Cash Flows Used in Financing Activities | (1,993) | (319,061) |
|---|
| Net (Decrease)/Increase in Cash and Restricted Cash | (77,323) | 151,325 |
|---|
| Cash and Restricted Cash - Beginning of Period | 88,676 | 2,109 |
|---|
| Cash and Restricted Cash - End of Period | $11,353 | $153,434 |
|---|
| (Thousands of Dollars) | As of September 30, 2026 | As of December 31, 2025 |
|---|
| ASSETS |
|---|
| Current Assets: |
|---|
| Cash and Cash Equivalents | $144,213 | $8,302 |
|---|
| Receivables, Net (net of allowance for uncollectible accounts of $130,493 and $132,561 as of September 30, 2026 and December 31, 2025, respectively) | 645,095 | 616,280 |
|---|
| Accounts Receivable from Affiliated Companies | 101,765 | 280,099 |
|---|
| Unbilled Revenues | 51,319 | 56,948 |
|---|
| Materials, Supplies and REC Inventory | 172,554 | 210,865 |
|---|
| Regulatory Assets | 1,119,526 | 978,754 |
|---|
| Derivative Assets | 99,296 | 91,011 |
|---|
| Prepayments and Other Current Assets | 21,095 | 90,040 |
|---|
| Total Current Assets | 2,354,863 | 2,332,299 |
|---|
| Property, Plant and Equipment, Net | 16,219,461 | 15,308,896 |
|---|
| Deferred Debits and Other Assets: |
|---|
| Regulatory Assets | 1,114,761 | 1,823,522 |
|---|
| Prepaid Pension and PBOP | 854,876 | 804,109 |
|---|
| Other Long-Term Assets | 345,056 | 264,073 |
|---|
| Total Deferred Debits and Other Assets | 2,314,693 | 2,891,704 |
|---|
| Total Assets | $20,889,017 | $20,532,899 |
|---|
| LIABILITIES AND CAPITALIZATION |
|---|
| Current Liabilities: |
|---|
| Notes Payable | $— | $245,445 |
|---|
| Long-Term Debt – Current Portion | 700,000 | 300,000 |
|---|
| Accounts Payable | 568,659 | 558,227 |
|---|
| Accounts Payable to Affiliated Companies | 139,040 | 198,085 |
|---|
| Obligations to Third-Party Suppliers | 178,117 | 179,757 |
|---|
| Regulatory Liabilities | 838,312 | 650,813 |
|---|
| Other Current Liabilities | 261,796 | 208,979 |
|---|
| Total Current Liabilities | 2,685,924 | 2,341,306 |
|---|
| Deferred Credits and Other Liabilities: |
|---|
| Accumulated Deferred Income Taxes | 2,178,334 | 2,087,287 |
|---|
| Regulatory Liabilities | 1,752,138 | 1,702,059 |
|---|
| Derivative Liabilities | — | 753,149 |
|---|
| Other Long-Term Liabilities | 441,085 | 401,625 |
|---|
| Total Deferred Credits and Other Liabilities | 4,371,557 | 4,944,120 |
|---|
| Long-Term Debt | 5,642,274 | 5,645,638 |
|---|
| Preferred Stock Not Subject to Mandatory Redemption | 43,000 | 43,000 |
|---|
| Common Stockholder's Equity: |
|---|
| Common Stock | — | — |
|---|
| Capital Surplus, Paid In | 4,642,842 | 4,238,842 |
|---|
| Retained Earnings | 3,503,275 | 3,319,768 |
|---|
| Accumulated Other Comprehensive Income | 145 | 225 |
|---|
| Common Stockholder's Equity | 8,146,262 | 7,558,835 |
|---|
| Commitments and Contingencies (Note 9) |
|---|
| Total Liabilities and Capitalization | $20,889,017 | $20,532,899 |
|---|
| For the Three Months Ended September 30, | For the Nine Months Ended September 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 | 2026 | 2025 |
|---|
| Operating Revenues | $1,168,080 | $1,129,537 | $3,237,057 | $3,012,688 |
|---|
| Operating Expenses: |
|---|
| Purchased Power and Transmission | 333,668 | 334,104 | 870,963 | 868,765 |
|---|
| Operations and Maintenance | 186,071 | 195,958 | 572,779 | 538,461 |
|---|
| Depreciation | 128,165 | 113,018 | 367,471 | 330,364 |
|---|
| Amortization of Regulatory Assets, Net | 29,389 | 29,714 | 119,367 | 97,433 |
|---|
| Energy Efficiency Programs | 119,388 | 97,735 | 312,650 | 205,431 |
|---|
| Taxes Other Than Income Taxes | 90,983 | 84,637 | 250,604 | 236,661 |
|---|
| Total Operating Expenses | 887,664 | 855,166 | 2,493,834 | 2,277,115 |
|---|
| Operating Income | 280,416 | 274,371 | 743,223 | 735,573 |
|---|
| Interest Expense | 76,783 | 69,087 | 229,495 | 183,714 |
|---|
| Other Income, Net | 51,868 | 47,074 | 157,650 | 141,082 |
|---|
| Income Before Income Tax Expense | 255,501 | 252,358 | 671,378 | 692,941 |
|---|
| Income Tax Expense | 59,231 | 59,230 | 155,401 | 163,709 |
|---|
| Net Income | $196,270 | $193,128 | $515,977 | $529,232 |
|---|
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
| For the Three Months Ended September 30, | For the Nine Months Ended September 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 | 2026 | 2025 |
|---|
| Net Income | $196,270 | $193,128 | $515,977 | $529,232 |
|---|
| Other Comprehensive (Loss)/Income, Net of Tax: |
|---|
| Changes in Funded Status of SERP Benefit Plan | (32) | (4) | (95) | (16) |
|---|
| Qualified Cash Flow Hedging Instruments | 5 | 5 | 15 | 15 |
|---|
| Other Comprehensive (Loss)/Income, Net of Tax | (27) | 1 | (80) | (1) |
|---|
| Comprehensive Income | $196,243 | $193,129 | $515,897 | $529,231 |
|---|
CONDENSED CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY
| For the Nine Months Ended September 30, 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 |
|---|
| Net Income | | 153,757 | | 153,757 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Dividends on Common Stock | | (331,000) | | (331,000) | |
|---|
| Other Comprehensive Loss | | (26) | | (26) | |
|---|
| Balance as of June 30, 2026 | 200 | — | | 4,496,842 | | 3,307,495 | | 172 | 7,804,509 |
|---|
| Net Income | | 196,270 | | 196,270 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Capital Contributions from Eversource Parent | | 146,000 | | 146,000 | |
|---|
| Other Comprehensive Loss | | (27) | | (27) | |
|---|
| Balance as of September 30, 2026 | 200 | $— | | $4,642,842 | | $3,503,275 | | $145 | $8,146,262 |
|---|
| For the Nine Months Ended September 30, 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 |
|---|
| Net Income | | 168,929 | | 168,929 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Balance as of June 30, 2025 | 200 | — | | 3,888,842 | | 3,026,229 | | (143) | 6,914,928 |
|---|
| Net Income | | 193,128 | | 193,128 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Other Comprehensive Income | | 1 | | 1 | |
|---|
| Balance as of September 30, 2025 | 200 | $— | | $3,888,842 | | $3,218,867 | | $(142) | $7,107,567 |
|---|
| For the Nine Months Ended September 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Activities: |
|---|
| Net Income | $515,977 | $529,232 |
|---|
| Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |
|---|
| Depreciation | 367,471 | 330,364 |
|---|
| Deferred Income Taxes | 56,479 | 12,724 |
|---|
| Uncollectible Expense | 23,980 | 22,176 |
|---|
| Pension, SERP and PBOP Income, Net | (33,386) | (29,734) |
|---|
| Regulatory (Under)/Over Recoveries, Net | (24,355) | 115,301 |
|---|
| Amortization of Regulatory Assets, Net | 119,367 | 97,433 |
|---|
| Cost of Removal Expenditures | (41,795) | (53,517) |
|---|
| Other | (35,159) | (13,957) |
|---|
| Changes in Current Assets and Liabilities: |
|---|
| Receivables and Unbilled Revenues, Net | 144,550 | (160,917) |
|---|
| Taxes Receivable/Accrued, Net | 103,687 | 44,410 |
|---|
| Accounts Payable | (87,708) | (44,814) |
|---|
| Other Current Assets and Liabilities, Net | (17,548) | (27,387) |
|---|
| Net Cash Flows Provided by Operating Activities | 1,091,560 | 821,314 |
|---|
| Investing Activities: |
|---|
| Investments in Property, Plant and Equipment | (1,180,029) | (1,210,112) |
|---|
| Other Investing Activities | (2,315) | — |
|---|
| Net Cash Flows Used in Investing Activities | (1,182,344) | (1,210,112) |
|---|
| Financing Activities: |
|---|
| Cash Dividends on Common Stock | (331,000) | (436,000) |
|---|
| Cash Dividends on Preferred Stock | (1,470) | (1,470) |
|---|
| Issuance of Long-Term Debt | 700,000 | 800,000 |
|---|
| Retirement of Long-Term Debt | (300,000) | — |
|---|
| Capital Contributions from Eversource Parent | 404,000 | 100,000 |
|---|
| Decrease in Notes Payable | (245,445) | (25,782) |
|---|
| Other Financing Activities | (5,245) | (9,106) |
|---|
| Net Cash Flows Provided by Financing Activities | 220,840 | 427,642 |
|---|
| Net Increase in Cash, Cash Equivalents and Restricted Cash | 130,056 | 38,844 |
|---|
| Cash, Cash Equivalents and Restricted Cash - Beginning of Period | 25,944 | 9,023 |
|---|
| Cash, Cash Equivalents and Restricted Cash - End of Period | $156,000 | $47,867 |
|---|
| (Thousands of Dollars) | As of September 30, 2026 | As of December 31, 2025 |
|---|
| ASSETS |
|---|
| Current Assets: |
|---|
| Cash and Cash Equivalents | $52,858 | $13,665 |
|---|
| Receivables, Net (net of allowance for uncollectible accounts of $18,754 and $23,547 as of September 30, 2026 and December 31, 2025, respectively) | 255,267 | 214,117 |
|---|
| Accounts Receivable from Affiliated Companies | 26,924 | 24,338 |
|---|
| Unbilled Revenues | 53,100 | 62,446 |
|---|
| Materials, Supplies and REC Inventory | 53,479 | 58,879 |
|---|
| Regulatory Assets | 118,071 | 119,871 |
|---|
| Special Deposits | 21,326 | 38,343 |
|---|
| Prepayments and Other Current Assets | 3,238 | 19,212 |
|---|
| Total Current Assets | 584,263 | 550,871 |
|---|
| Property, Plant and Equipment, Net | 5,712,553 | 5,507,663 |
|---|
| Deferred Debits and Other Assets: |
|---|
| Regulatory Assets | 812,638 | 841,203 |
|---|
| Prepaid Pension and PBOP | 123,586 | 111,833 |
|---|
| Other Long-Term Assets | 38,310 | 17,661 |
|---|
| Total Deferred Debits and Other Assets | 974,534 | 970,697 |
|---|
| Total Assets | $7,271,350 | $7,029,231 |
|---|
| LIABILITIES AND CAPITALIZATION |
|---|
| Current Liabilities: |
|---|
| Notes Payable to Eversource Parent | $2,100 | $49,300 |
|---|
| Rate Reduction Bonds – Current Portion | 43,210 | 43,210 |
|---|
| Accounts Payable | 157,946 | 179,137 |
|---|
| Accounts Payable to Affiliated Companies | 36,775 | 45,277 |
|---|
| Obligations to Third-Party Suppliers | 39,057 | 37,584 |
|---|
| Accrued Interest | 36,725 | 35,224 |
|---|
| Regulatory Liabilities | 187,808 | 118,443 |
|---|
| Other Current Liabilities | 48,864 | 62,334 |
|---|
| Total Current Liabilities | 552,485 | 570,509 |
|---|
| Deferred Credits and Other Liabilities: |
|---|
| Accumulated Deferred Income Taxes | 825,385 | 806,270 |
|---|
| Regulatory Liabilities | 436,528 | 417,442 |
|---|
| Other Long-Term Liabilities | 45,316 | 46,669 |
|---|
| Total Deferred Credits and Other Liabilities | 1,307,229 | 1,270,381 |
|---|
| Long-Term Debt | 2,234,291 | 2,031,323 |
|---|
| Rate Reduction Bonds | 237,652 | 280,862 |
|---|
| Common Stockholder's Equity: |
|---|
| Common Stock | — | — |
|---|
| Capital Surplus, Paid In | 1,973,134 | 1,973,134 |
|---|
| Retained Earnings | 966,559 | 903,022 |
|---|
| Common Stockholder's Equity | 2,939,693 | 2,876,156 |
|---|
| Commitments and Contingencies (Note 9) |
|---|
| Total Liabilities and Capitalization | $7,271,350 | $7,029,231 |
|---|
| For the Three Months Ended September 30, | For the Nine Months Ended September 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 | 2026 | 2025 |
|---|
| Operating Revenues | $375,805 | $351,219 | $1,093,262 | $1,002,332 |
|---|
| Operating Expenses: |
|---|
| Purchased Power and Transmission | 86,121 | 67,796 | 241,021 | 187,072 |
|---|
| Operations and Maintenance | 66,857 | 73,755 | 195,684 | 211,760 |
|---|
| Depreciation | 45,499 | 44,049 | 134,910 | 125,820 |
|---|
| Amortization of Regulatory Assets/(Liabilities), Net | 21,104 | (2,178) | 56,004 | 45,487 |
|---|
| Energy Efficiency Programs | 9,882 | 12,605 | 28,196 | 35,350 |
|---|
| Taxes Other Than Income Taxes | 28,733 | 27,835 | 84,459 | 80,832 |
|---|
| Total Operating Expenses | 258,196 | 223,862 | 740,274 | 686,321 |
|---|
| Operating Income | 117,609 | 127,357 | 352,988 | 316,011 |
|---|
| Interest Expense | 28,347 | 24,098 | 83,662 | 65,171 |
|---|
| Other Income, Net | 12,166 | 9,032 | 33,026 | 33,515 |
|---|
| Income Before Income Tax Expense | 101,428 | 112,291 | 302,352 | 284,355 |
|---|
| Income Tax Expense | 22,859 | 31,050 | 72,015 | 72,920 |
|---|
| Net Income | $78,569 | $81,241 | $230,337 | $211,435 |
|---|
CONDENSED CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY
| For the Nine Months Ended September 30, 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 |
|---|
| Net Income | | 71,991 | 71,991 | |
|---|
| Dividends on Common Stock | | (89,000) | (89,000) | |
|---|
| Balance as of June 30, 2026 | 301 | — | 1,973,134 | 926,890 | 2,900,024 |
|---|
| Net Income | | 78,569 | 78,569 | |
|---|
| Dividends on Common Stock | | (38,900) | (38,900) | |
|---|
| Balance as of September 30, 2026 | 301 | $— | $1,973,134 | $966,559 | $2,939,693 |
|---|
| For the Nine Months Ended September 30, 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 |
|---|
| Net Income | | 63,915 | 63,915 | |
|---|
| Dividends on Common Stock | | (175,000) | (175,000) | |
|---|
| Balance as of June 30, 2025 | 301 | — | | 1,973,134 | 763,862 | 2,736,996 |
|---|
| Net Income | | 81,241 | 81,241 | |
|---|
| Balance as of September 30, 2025 | 301 | $— | | $1,973,134 | $845,103 | $2,818,237 |
|---|
| For the Nine Months Ended September 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Activities: |
|---|
| Net Income | $230,337 | $211,435 |
|---|
| Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |
|---|
| Depreciation | 134,910 | 125,820 |
|---|
| Deferred Income Taxes | 11,490 | 15,250 |
|---|
| Uncollectible Expense | (1,977) | 3,871 |
|---|
| Pension, SERP and PBOP Income, Net | (7,778) | (6,679) |
|---|
| Regulatory Over/(Under) Recoveries, Net | 38,467 | (8,466) |
|---|
| Amortization of Regulatory Assets, Net | 56,004 | 45,487 |
|---|
| Cost of Removal Expenditures | (19,469) | (21,249) |
|---|
| Other | (10,424) | (8,776) |
|---|
| Changes in Current Assets and Liabilities: |
|---|
| Receivables and Unbilled Revenues, Net | (35,653) | (12,479) |
|---|
| Taxes Receivable/Accrued, Net | (492) | (1,638) |
|---|
| Accounts Payable | (22,824) | (15,306) |
|---|
| Other Current Assets and Liabilities, Net | 3,246 | 31,001 |
|---|
| Net Cash Flows Provided by Operating Activities | 375,837 | 358,271 |
|---|
| Investing Activities: |
|---|
| Investments in Property, Plant and Equipment | (297,962) | (402,789) |
|---|
| Net Cash Flows Used in Investing Activities | (297,962) | (402,789) |
|---|
| Financing Activities: |
|---|
| Cash Dividends on Common Stock | (166,800) | (175,000) |
|---|
| Capital Contributions from Eversource Parent | — | 75,000 |
|---|
| Issuance of Long-Term Debt | 200,000 | 300,000 |
|---|
| Repayment of Rate Reduction Bonds | (43,210) | (43,210) |
|---|
| Decrease in Notes Payable to Eversource Parent | (47,200) | (123,000) |
|---|
| Other Financing Activities | 1,512 | (1,867) |
|---|
| Net Cash Flows (Used in)/Provided by Financing Activities | (55,698) | 31,923 |
|---|
| Net Increase/(Decrease) in Cash, Cash Equivalents and Restricted Cash | 22,177 | (12,595) |
|---|
| Cash, Cash Equivalents and Restricted Cash - Beginning of Period | 55,186 | 37,243 |
|---|
| Cash, Cash Equivalents and Restricted Cash - End of Period | $77,363 | $24,648 |
|---|