PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Revenues	$ 12,289,336	$ 9,863,085	$ 8,904,430
Operating Expenses:
Purchased Power and Transmission	5,014,074	3,372,344	2,987,840
Operations and Maintenance	1,865,328	1,739,685	1,480,252
Depreciation	1,194,246	1,103,008	981,380
Energy Efficiency Programs	658,051	592,775	535,760
Taxes Other Than Income Taxes	910,591	829,987	752,785
Total Operating Expenses	10,091,182	7,869,764	6,915,696
Operating Income	2,198,154	1,993,321	1,988,734
Interest Expense	678,274	582,334	538,452
Other Income, Net	346,088	161,282	108,590
Income Before Income Tax Expense	1,865,968	1,572,269	1,558,872
Income Tax Expense	453,574	344,223	346,186
Net Income	1,412,394	1,228,046	1,212,686
PSNH
Operating Revenues	1,474,799	1,177,248	1,079,095
Operating Expenses:
Purchased Power and Transmission	665,478	370,271	364,067
Operations and Maintenance	255,991	237,659	219,325
Depreciation	127,962	120,065	100,372
Amortization of Regulatory Assets, Net	42,867	86,832	52,804
Energy Efficiency Programs	37,434	38,752	37,583
Taxes Other Than Income Taxes	95,301	91,465	81,611
Total Operating Expenses	1,225,033	945,044	855,762
Operating Income	249,766	232,204	223,333
Interest Expense	59,548	56,998	58,127
Other Income, Net	32,666	14,565	13,786
Income Before Income Tax Expense	222,884	189,771	178,992
Income Tax Expense	51,314	39,433	31,680
Net Income	$ 171,570	$ 150,338	$ 147,312