NSTAR ELECTRIC COMPANY AND SUBSIDIARY CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Operating Revenues	$ 4,504,363	$ 4,118,355
Operating Expenses:
Purchased Power and Transmission	1,518,174	1,340,337
Operations and Maintenance	506,980	487,451
Depreciation	420,481	379,579
Energy Efficiency Programs	291,499	257,550
Taxes Other Than Income Taxes	288,317	271,595
Total Operating Expenses	3,428,215	3,191,961
Operating Income	1,076,148	926,394
Interest Expense	365,259	300,849
Other Income, Net	101,159	92,344
Income Before Income Tax Expense	812,048	717,889
Income Tax Expense	203,327	165,221
NSTAR Electric Company
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