NSTAR ELECTRIC COMPANY AND SUBSIDIARY CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Operating Revenues	$ 3,220,625	$ 3,063,224	$ 10,177,048	$ 8,929,321
Operating Expenses:
Purchased Power and Transmission	1,049,254	917,858	3,208,337	2,995,245
Operations and Maintenance	518,341	510,439	1,473,349	1,437,826
Depreciation	395,388	366,145	1,160,563	1,060,650
Energy Efficiency Programs	173,104	148,054	565,945	506,821
Taxes Other Than Income Taxes	287,610	264,371	817,931	740,414
Total Operating Expenses	2,531,943	2,450,824	7,898,923	6,868,451
Operating Income/(Loss)	688,682	612,400	2,278,125	2,060,870
Interest Expense	318,065	300,576	912,107	822,640
Other Income, Net	85,830	112,555	273,536	318,870
Income/(Loss) Before Income Tax (Benefit)/Expense	172,447	(39,640)	1,355,554	1,093,081
Income Tax (Benefit)/Expense	(196,982)	76,537	78,849	348,309
NSTAR Electric Company
Operating Revenues	1,129,537	1,077,523	3,012,688	2,870,206
Operating Expenses:
Purchased Power and Transmission	334,104	335,335	868,765	817,988
Operations and Maintenance	195,958	189,012	538,461	526,263
Depreciation	113,018	104,623	330,364	301,831
Amortization of Regulatory (Liabilities)/Assets, Net	29,714	51,187	97,433	120,814
Energy Efficiency Programs	97,735	73,255	205,431	222,218
Taxes Other Than Income Taxes	84,637	74,758	236,661	205,818
Total Operating Expenses	855,166	828,170	2,277,115	2,194,932
Operating Income/(Loss)	274,371	249,353	735,573	675,274
Interest Expense	69,087	60,783	183,714	164,896
Other Income, Net	47,074	47,489	141,082	143,024
Income/(Loss) Before Income Tax (Benefit)/Expense	252,358	236,059	692,941	653,402
Income Tax (Benefit)/Expense	59,230	51,510	163,709	151,273
Net Income/(Loss)	$ 193,128	$ 184,549	$ 529,232	$ 502,129