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NSTAR ELECTRIC COMPANY AND SUBSIDIARY CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Capital Surplus, Paid In
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
NSTAR Electric
NSTAR Electric
Common Stock
NSTAR Electric
Capital Surplus, Paid In
NSTAR Electric
Retained Earnings
NSTAR Electric
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2021   344,403,196         200      
Beginning balance at Dec. 31, 2021 $ 14,599,844 $ 1,789,092 $ 8,098,514 $ 5,005,391 $ (42,275) $ 4,973,019 $ 0 $ 2,253,942 $ 2,718,576 $ 501
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net Income/(Loss)           492,428     492,428  
Dividends on Preferred Stock (7,519)     (7,519)   (1,960)     (1,960)  
Dividends on Common Stock (883,113)     (883,113)   (287,600)     (287,600)  
Capital Contributions from Eversource Parent           525,000   525,000    
Other Comprehensive Loss, Net of Tax           (217)       (217)
Ending balance (in shares) at Dec. 31, 2022   348,443,855         200      
Ending balance at Dec. 31, 2022 15,473,158 $ 1,799,920 8,401,731 5,527,153 (39,421) 5,700,670 $ 0 2,778,942 2,921,444 284
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net Income/(Loss)           544,528     544,528  
Dividends on Preferred Stock (7,519)     (7,519)   (1,960)     (1,960)  
Dividends on Common Stock $ (942,398)     (942,398)   (327,400)     (327,400)  
Capital Contributions from Eversource Parent           234,900   234,900    
Other Comprehensive Loss, Net of Tax         5,700 (240)       (240)
Ending balance (in shares) at Dec. 31, 2023 349,540,266 349,540,266         200      
Ending balance at Dec. 31, 2023 $ 14,173,892 $ 1,799,920 8,460,876 4,142,515 (33,737) 6,150,498 $ 0 3,013,842 3,136,612 44
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net Income/(Loss)           636,353     636,353  
Dividends on Preferred Stock (7,519)     (7,519)   (1,960)     (1,960)  
Dividends on Common Stock $ (1,025,027)     (1,025,027)   (643,900)     (643,900)  
Capital Contributions from Eversource Parent           775,000   775,000    
Other Comprehensive Loss, Net of Tax         7,200 (185)       (185)
Ending balance (in shares) at Dec. 31, 2024 366,608,052 366,608,052         200      
Ending balance at Dec. 31, 2024 $ 15,039,387 $ 1,878,622 $ 9,428,905 $ 3,929,141 $ (26,472) $ 6,915,806 $ 0 $ 3,788,842 $ 3,127,105 $ (141)