v3.26.3
Madison Gas and Electric Company Consolidated Statements of Common Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Total
MGE [Member]
Common Stock [Member]
MGE [Member]
Additional Paid-in Capital [Member]
MGE [Member]
Retained Earnings [Member]
MGE [Member]
Accumulated Other Comprehensive Income/(Loss) [Member]
MGE [Member]
Noncontrolling Interest [Member]
MGE [Member]
Beginning balance, shares at Dec. 31, 2024     17,348        
Beginning balance, value at Dec. 31, 2024   $ 1,139,805 $ 17,348 $ 283,667 $ 688,404 $ 0 $ 150,386
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income $ 112,587 104,037     87,056   16,981
Cash dividends paid to parent by MGE   (37,500)     (37,500)    
Capital contributions from parent   2,000   2,000      
Distributions to parent from noncontrolling interest   (11,500)         (11,500)
Ending balance, shares at Sep. 30, 2025     17,348        
Ending balance, value at Sep. 30, 2025   1,196,842 $ 17,348 285,667 737,960 0 155,867
Beginning balance, shares at Jun. 30, 2025     17,348        
Beginning balance, value at Jun. 30, 2025   1,172,583 $ 17,348 283,667 717,869 0 153,699
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income 44,497 39,759     34,091   5,668
Cash dividends paid to parent by MGE   (14,000)     (14,000)    
Capital contributions from parent   2,000   2,000      
Distributions to parent from noncontrolling interest   (3,500)         (3,500)
Ending balance, shares at Sep. 30, 2025     17,348        
Ending balance, value at Sep. 30, 2025   1,196,842 $ 17,348 285,667 737,960 0 155,867
Beginning balance, shares at Dec. 31, 2025     17,348        
Beginning balance, value at Dec. 31, 2025   1,207,352 $ 17,348 292,167 741,049 0 156,788
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income 138,192 124,842     107,743   17,099
Cash dividends paid to parent by MGE   (33,500)     (33,500)    
Capital contributions from parent   83,500   83,500      
Distributions to parent from noncontrolling interest   (13,500)         (13,500)
Ending balance, shares at Sep. 30, 2026     17,348        
Ending balance, value at Sep. 30, 2026   1,368,694 $ 17,348 375,667 815,292 0 160,387
Beginning balance, shares at Jun. 30, 2026     17,348        
Beginning balance, value at Jun. 30, 2026   1,332,527 $ 17,348 369,667 785,639 0 159,873
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income $ 56,358 50,917     45,153   5,764
Cash dividends paid to parent by MGE   (15,500)     (15,500)    
Capital contributions from parent   6,000   6,000      
Distributions to parent from noncontrolling interest   (5,250)         (5,250)
Ending balance, shares at Sep. 30, 2026     17,348        
Ending balance, value at Sep. 30, 2026   $ 1,368,694 $ 17,348 $ 375,667 $ 815,292 $ 0 $ 160,387