NSTAR ELECTRIC COMPANY AND SUBSIDIARY CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Revenues	$ 3,332,575	$ 3,795,643
Operating Expenses:
Purchased Power and Transmission	1,235,956	1,903,246
Operations and Maintenance	462,964	454,562
Depreciation	339,914	312,955
Energy Efficiency Programs	213,479	222,952
Taxes Other Than Income Taxes	236,614	228,414
Total Operating Expenses	2,486,602	3,046,070
Operating Income/(Loss)	845,973	749,573
Interest Expense	250,749	194,543
Other Income, Net	91,030	88,981
Income Before Income Tax Expense	686,254	644,011
Income Tax Expense	162,526	150,972
NSTAR Electric Company
Operating Revenues	947,615	956,283
Operating Expenses:
Purchased Power and Transmission	273,305	360,925
Operations and Maintenance	173,672	166,083
Depreciation	96,922	90,430
Amortization of Regulatory Liabilities, Net	48,392	22,785
Energy Efficiency Programs	82,301	86,217
Taxes Other Than Income Taxes	60,010	53,510
Total Operating Expenses	734,602	779,950
Operating Income/(Loss)	213,013	176,333
Interest Expense	49,423	44,865
Other Income, Net	47,114	39,873
Income Before Income Tax Expense	210,704	171,341
Income Tax Expense	50,727	37,528
Net Income	$ 159,977	$ 133,813