Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Contractual Obligation, Fiscal Year Maturity Schedule

As of December 31, 2023, the future minimum commitments related to these purchase contracts were as follows:

(In thousands)	2024		2025		2026		2027		2028		Thereafter
Coal(a)	$	24,017	$	14,445	$	2,884	$	—	$	—	$	—
Natural gas(b)		42,527		25,733		15,028		2,165		2,165		9,830
Purchase power(c)		5,498		5,608		5,720		5,835		260		—
Renewable energy(d)		6,426		2,102		2,118		2,135		2,155		26,899
Other		7,571		3,330		4,230		619		131		668
	$	86,039	$	51,218	$	29,980	$	10,754	$	4,711	$	37,397

(a)Total coal commitments for MGE's share of the Columbia and Elm Road Units, including transportation. Fuel procurement for MGE's jointly owned Columbia and Elm Road Units is handled by WPL and WEPCO, respectively, who are the operators of those facilities.

(b)MGE's natural gas transportation and storage contracts require fixed monthly payments for firm supply pipeline transportation and storage capacity. The pricing components of the fixed monthly payments for the transportation and storage contracts are approved by FERC but may be subject to change. MGE's natural gas supply commitments include market-based pricing.

(c)MGE has a purchase power agreement to help meet future electric supply requirements.

(d)Operational commitments for solar and wind facilities.

Other Commitments

MGE has several other commitments related to various projects. Payments for these commitments are expected to be as follows:

(In thousands)	2024		2025		2026		2027		2028		Thereafter
Other commitments	$	333	$	333	$	333	$	333	$	333	$	1,999