NSTAR ELECTRIC COMPANY AND SUBSIDIARY CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current Assets:
Cash	$ 33,381	$ 53,873
Receivables, Net (net of allowance for uncollectible accounts)	1,473,255	1,431,531
Unbilled Revenues	196,710	225,325
Materials, Supplies and REC Inventory	532,415	507,307
Regulatory Assets	2,071,652	1,674,196
Prepayments and Other Current Assets	365,209	355,762
Total Current Assets	4,672,622	4,247,994
Property, Plant and Equipment, Net	41,126,153	39,498,607
Deferred Debits and Other Assets:
Regulatory Assets	4,995,989	4,714,970
Prepaid Pension and PBOP	1,101,017	1,028,207
Other Long-Term Assets	643,771	592,080
Total Deferred Debits and Other Assets	12,553,679	11,865,644
Total Assets	58,352,454	55,612,245
Current Liabilities:
Notes Payable	1,401,600	1,930,422
Accounts Payable	1,759,283	1,869,187
Regulatory Liabilities	652,291	591,750
Other Current Liabilities	740,700	821,404
Total Current Liabilities	6,253,149	6,341,397
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	5,249,786	5,303,730
Regulatory Liabilities	4,092,811	4,022,923
Other Long-Term Liabilities	966,558	1,029,238
Total Deferred Credits and Other Liabilities	10,943,269	10,985,489
Long-Term Debt	25,836,078	23,588,616
Preferred Stock Not Subject to Mandatory Redemption	155,568	155,569
Common Shareholders' Equity:
Capital Surplus, Paid In	8,710,844	8,460,876
Retained Earnings	4,496,830	4,142,515
Accumulated Other Comprehensive Income	(29,581)	(33,737)
Common Shareholders' Equity	14,818,713	14,173,892
Commitments and Contingencies
Total Liabilities and Capitalization	58,352,454	55,612,245
NSTAR Electric Company
Current Assets:
Cash	2,730	6,740
Unbilled Revenues	62,319	49,897
Materials, Supplies and REC Inventory	166,717	173,770
Regulatory Assets	757,447	676,083
Prepayments and Other Current Assets	37,050	41,464
Total Current Assets	1,620,300	1,510,295
Property, Plant and Equipment, Net	13,322,862	12,753,787
Deferred Debits and Other Assets:
Regulatory Assets	1,305,490	1,281,836
Prepaid Pension and PBOP	654,183	608,617
Other Long-Term Assets	130,839	116,978
Total Deferred Debits and Other Assets	2,090,512	2,007,431
Total Assets	17,033,674	16,271,513
Current Liabilities:
Notes Payable	236,500	365,847
Obligations to Third Party Suppliers	232,608	139,823
Renewable Portfolio Standards Compliance Obligations	70,689	116,010
Regulatory Liabilities	413,492	368,070
Other Current Liabilities	75,516	84,688
Total Current Liabilities	1,644,455	1,818,756
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	1,925,079	1,849,613
Regulatory Liabilities	1,619,614	1,585,311
Other Long-Term Liabilities	335,403	327,388
Total Deferred Credits and Other Liabilities	3,880,096	3,762,312
Long-Term Debt	5,092,959	4,496,947
Preferred Stock Not Subject to Mandatory Redemption	43,000	43,000
Common Shareholders' Equity:
Common Stock	0	0
Capital Surplus, Paid In	3,313,842	3,013,842
Retained Earnings	3,059,312	3,136,612
Accumulated Other Comprehensive Income	10	44
Common Shareholders' Equity	6,373,164	6,150,498
Commitments and Contingencies
Total Liabilities and Capitalization	17,033,674	16,271,513
NSTAR Electric Company | Nonrelated Party
Current Assets:
Receivables, Net (net of allowance for uncollectible accounts)	490,160	487,707
Current Liabilities:
Accounts Payable	483,571	599,696
NSTAR Electric Company | Related Party
Current Assets:
Receivables, Net (net of allowance for uncollectible accounts)	103,877	74,634
Current Liabilities:
Accounts Payable	$ 132,079	$ 144,622