v3.26.1
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 $ 68,090 64,278     52,965   11,313
Cash dividends paid to parent by MGE   (23,500)     (23,500)    
Capital contributions from parent   0          
Distributions to parent from noncontrolling interest   (8,000)         (8,000)
Ending balance, shares at Jun. 30, 2025     17,348        
Ending balance, value at Jun. 30, 2025   1,172,583 $ 17,348 283,667 717,869 0 153,699
Beginning balance, shares at Mar. 31, 2025     17,348        
Beginning balance, value at Mar. 31, 2025   1,162,108 $ 17,348 283,667 709,108 0 151,985
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income 26,498 24,475     18,761   5,714
Cash dividends paid to parent by MGE   (10,000)     (10,000)    
Distributions to parent from noncontrolling interest   (4,000)         (4,000)
Ending balance, shares at Jun. 30, 2025     17,348        
Ending balance, value at Jun. 30, 2025   1,172,583 $ 17,348 283,667 717,869 0 153,699
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 81,834 73,925     62,590   11,335
Cash dividends paid to parent by MGE   (18,000)     (18,000)    
Capital contributions from parent   77,500   77,500      
Distributions to parent from noncontrolling interest   (8,250)         (8,250)
Ending balance, shares at Jun. 30, 2026     17,348        
Ending balance, value at Jun. 30, 2026   1,332,527 $ 17,348 369,667 785,639 0 159,873
Beginning balance, shares at Mar. 31, 2026     17,348        
Beginning balance, value at Mar. 31, 2026   1,247,565 $ 17,348 308,917 763,156 0 158,144
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income $ 33,353 28,212     22,483   5,729
Capital contributions from parent   60,750   60,750      
Distributions to parent from noncontrolling interest   (4,000)         (4,000)
Ending balance, shares at Jun. 30, 2026     17,348        
Ending balance, value at Jun. 30, 2026   $ 1,332,527 $ 17,348 $ 369,667 $ 785,639 $ 0 $ 159,873