Noncontrolling Interest (Tables) - MGE [Member]

12 Months Ended

Dec. 31, 2025

Noncontrolling Interest [Line Items]

Noncontrolling Interest in Balance Sheet

The noncontrolling interest in MGE's consolidated balance sheets as of December 31:

(In thousands)	2025		2024
MGE Power Elm Road(a)	$	104,479	$	104,304
MGE Power West Campus(a)		52,309		46,082
Total Noncontrolling Interest	$	156,788	$	150,386

Net Income Attributable to Noncontrolling Interest, Net of Tax

The net income attributable to noncontrolling interest, net of tax, was as follows for the years ended December 31:

(In thousands)	2025		2024		2023
MGE Power Elm Road(a)	$	15,175	$	15,553	$	14,668
MGE Power West Campus(a)		7,477		7,302		7,200
Net Income Attributable to Noncontrolling Interest, Net of Tax	$	22,652	$	22,855	$	21,868

(a)MGE Power Elm Road and MGE Power West Campus are not subsidiaries of MGE; however, they have been consolidated in the consolidated financial statements of MGE (see Footnote 3). MGE Power Elm Road and MGE Power West Campus are 100% owned by MGE Power, and MGE Power is 100% owned by MGE Energy. MGE Energy's proportionate share of the equity and net income (through its wholly owned subsidiary MGE Power) of MGE Power Elm Road and MGE Power West Campus is classified within the MGE consolidated financial statements as noncontrolling interest.