PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating Revenues	$ 13,547,244	$ 11,900,809	$ 11,910,705
Operating Expenses:
Purchased Power and Transmission	4,209,172	3,736,078	5,168,241
Operations and Maintenance	2,073,778	2,012,926	1,895,703
Depreciation	1,568,578	1,433,503	1,305,840
Energy Efficiency Programs	778,348	671,828	691,344
Taxes Other Than Income Taxes	1,092,870	997,901	940,359
Total Operating Expenses	10,558,655	9,492,100	9,511,370
Operating Income	2,988,589	2,408,709	2,399,335
Interest Expense	1,243,266	1,111,336	855,441
Other Income, Net	378,854	410,482	348,069
Income/(Loss) Before Income Tax Expense	1,840,177	1,243,836	(275,037)
Income Tax Expense	140,286	424,664	159,684
PSNH
Operating Revenues	1,376,351	1,294,493	1,447,873
Operating Expenses:
Purchased Power and Transmission	280,210	244,351	604,983
Operations and Maintenance	299,170	288,342	284,442
Depreciation	168,015	154,072	140,417
Amortization of Regulatory Assets/(Liabilities), Net	68,168	136,113	(16,343)
Energy Efficiency Programs	46,214	42,871	39,618
Taxes Other Than Income Taxes	106,102	96,969	93,894
Total Operating Expenses	967,879	962,718	1,147,011
Operating Income	408,472	331,775	300,862
Interest Expense	89,960	77,770	72,786
Other Income, Net	42,988	31,123	26,597
Income/(Loss) Before Income Tax Expense	361,500	285,128	254,673
Income Tax Expense	92,146	70,245	59,014
Net Income/(Loss)	$ 269,354	$ 214,883	$ 195,659