NSTAR ELECTRIC COMPANY AND SUBSIDIARY CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current Assets:
Cash	$ 53,873	$ 47,597
Cash Equivalents	0	327,006
Receivables, Net (net of allowance for uncollectible accounts)	1,431,531	1,517,138
Unbilled Revenues	225,325	238,968
Materials, Supplies, Natural Gas and REC Inventory	507,307	374,395
Regulatory Assets	1,674,196	1,335,491
Prepayments and Other Current Assets	355,762	382,603
Total Current Assets	4,247,994	4,223,198
Property, Plant and Equipment, Net	39,498,607	36,112,820
Deferred Debits and Other Assets:
Regulatory Assets	4,714,970	4,242,794
Prepaid Pension and PBOP	1,028,207	1,045,524
Other Long-Term Assets	592,080	541,344
Total Deferred Debits and Other Assets	11,865,644	12,894,882
Total Assets	55,612,245	53,230,900
Current Liabilities:
Long-Term Debt – Current Portion	824,847	1,320,129
Accounts Payable	1,869,187	2,113,905
Regulatory Liabilities	591,750	890,786
Other Current Liabilities	1,081,981	989,053
Total Current Liabilities	6,341,397	6,799,283
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	5,303,730	5,067,902
Regulatory Liabilities	4,022,923	3,930,305
Other Long-Term Liabilities	961,239	888,081
Total Deferred Credits and Other Liabilities	10,985,489	10,668,403
Capitalization:
Long-Term Debt	23,588,616	19,723,994
Preferred Stock Not Subject to Mandatory Redemption	155,569	155,570
Common Shareholders' Equity:
Capital Surplus, Paid In	8,460,876	8,401,731
Retained Earnings	4,142,515	5,527,153
Accumulated Other Comprehensive Income/(Loss)	(33,737)	(39,421)
Common Shareholders' Equity	14,173,892	15,473,158
Commitments and Contingencies (Note 13)
Total Liabilities and Capitalization	55,612,245	53,230,900
NSTAR Electric Company
Current Assets:
Cash	6,740	738
Cash Equivalents	0	327,006
Unbilled Revenues	49,897	39,680
Materials, Supplies, Natural Gas and REC Inventory	173,770	138,352
Regulatory Assets	676,083	492,759
Prepayments and Other Current Assets	41,464	71,276
Total Current Assets	1,510,295	1,558,378
Property, Plant and Equipment, Net	12,753,787	11,626,968
Deferred Debits and Other Assets:
Regulatory Assets	1,281,836	1,221,619
Prepaid Pension and PBOP	608,617	576,809
Other Long-Term Assets	116,978	111,846
Total Deferred Debits and Other Assets	2,007,431	1,910,274
Total Assets	16,271,513	15,095,620
Current Liabilities:
Notes Payable to Eversource Parent	365,847	0
Long-Term Debt – Current Portion	0	80,000
Obligations to Third Party Suppliers	139,823	142,628
Renewable Portfolio Standards Compliance Obligations	116,010	120,239
Regulatory Liabilities	368,070	373,221
Other Current Liabilities	84,688	83,925
Total Current Liabilities	1,818,756	1,468,596
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	1,849,613	1,700,875
Regulatory Liabilities	1,585,311	1,548,081
Other Long-Term Liabilities	327,388	289,313
Total Deferred Credits and Other Liabilities	3,762,312	3,538,269
Capitalization:
Long-Term Debt	4,496,947	4,345,085
Preferred Stock Not Subject to Mandatory Redemption	43,000	43,000
Common Shareholders' Equity:
Common Shares	0	0
Capital Surplus, Paid In	3,013,842	2,778,942
Retained Earnings	3,136,612	2,921,444
Accumulated Other Comprehensive Income/(Loss)	44	284
Common Shareholders' Equity	6,150,498	5,700,670
Commitments and Contingencies (Note 13)
Total Liabilities and Capitalization	16,271,513	15,095,620
NSTAR Electric Company | Nonrelated Party
Current Assets:
Receivables, Net (net of allowance for uncollectible accounts)	487,707	453,371
Current Liabilities:
Accounts Payable	599,696	559,676
NSTAR Electric Company | Related Party
Current Assets:
Receivables, Net (net of allowance for uncollectible accounts)	74,634	35,196
Current Liabilities:
Accounts Payable	$ 144,622	$ 108,907