MGE has undivided ownership interests in jointly owned facilities. Generation and operating expenses are primarily divided between the joint owners under the same method as ownership. MGE provides its own financing, and the respective portion of facilities and costs are included in the corresponding operating expenses (fuel for electric generation, purchased power, other operations and maintenance, etc.) in the consolidated statements of income.

The following tables shows MGE's interest in utility plant in service, and the related accumulated depreciation reserves and other information related to MGE's jointly owned facilities:


(In thousands, except for percentages and MW)	Columbia(a)				Elm Road(b)					West Campus(c)					West Riverside(d)
Ownership interest			19	%			8.33		%			55		%			3.4		%
Fuel source		Coal				Coal					Natural gas					Natural gas
Share of generation (MW)			211	MW			106		MW			157		MW			25		MW

For the year ended December 31,
Operating expense - 2023	$		30,103		$		21,072				(e)				$		3,214
Operating expense - 2022			26,141				18,613				(e)					N/A
Operating expense - 2021			33,284				18,478				(e)					N/A

As of December 31, 2023
Utility plant	$		—		$		205,325			$		115,438			$		26,739
Accumulated depreciation			—				(43,115	)				(40,046	)				(2,811	)
Plant anticipated to be retired early, net			133,268				—					—					—
Construction work in progress			2,428				834					1,533					257

As of December 31, 2022
Utility plant	$		—		$		202,118			$		115,137				N/A
Accumulated depreciation			—				(40,951	)				(37,857	)			N/A
Plant anticipated to be retired early, net			147,659				—					—				N/A
Construction work in progress			4,805				3,410					809				N/A

(a)

MGE and the other co-owners announced plans to retire Columbia, a two unit coal-fired generation facility located in Portage, Wisconsin. The co-owners intend to retire Unit 1 and Unit 2 by June 2026. Final timing and retirement dates are subject to change depending on operational, regulatory, and other factors. As of December 31, 2023 and 2022, early retirement of Columbia was probable. See Footnote 4 for further information.

(b)

Two coal-fired generating units in Oak Creek, Wisconsin. In 2021, MGE announced plans to end the use of coal as a primary fuel at the Elm Road Units and transition the plant to natural gas. By the end of 2030, MGE expects coal to be used only as a backup fuel at the Elm Road Units. This transition will help MGE meet its 2030 carbon reduction goals. By the end of 2032, MGE expects that the Elm Road Units will be fully transitioned away from coal, which will eliminate coal as an internal generation source for MGE.

(c)

MGE Power West Campus and the UW jointly own the West Campus Cogeneration Facility (WCCF) located on the UW campus in Madison, Wisconsin. The UW owns a controlling interest in the chilled-water and steam plants, which are used to meet the needs for air-conditioning and steam-heat capacity for the UW campus. MGE Power West Campus owns a controlling interest in the electric generation plant, which is leased and operated by MGE.

(d)

In March 2023, MGE purchased an ownership interest in West Riverside, a natural gas-fired facility located in Beloit, WI, from WPL, operator and co-owner of the plant. West Riverside was placed in-service in 2020.

(e)

Operating charges are allocated to the UW based on formulas contained in the operating agreement. Under the provisions of this arrangement, the UW is required to reimburse MGE for their allocated portion of fuel and operating expenses. For the years ended December 31, 2023, 2022, and 2021, the UW's allocated share of fuel and operating costs was $6.7 million, $8.7 million, and $6.2 million, respectively.


(In thousands, except for percentages and MW)	Forward Wind(f)					Two Creeks(g)					Badger Hollow I & II(h)					Red Barn(i)
Ownership interest			12.8		%			33		%			33		%			10		%
Fuel Source		Wind					Solar					Solar					Wind
Share of generation (MW)			18		MW			50		MW			100		MW			9.16		MW

For the year ended December 31,
Operating expense - 2023	$		677			$		1,087			$		751			$		143
Operating expense - 2022			662					1,032					787				N/A
Operating expense - 2021			669					953					140				N/A

As of December 31, 2023
Utility plant	$		34,127			$		67,971			$		155,696			$		16,657
Accumulated depreciation			(16,970	)				(7,750	)				(5,114	)				(365	)
Construction work in progress			16					30					348					—

As of December 31, 2022
Utility plant	$		34,117			$		67,890			$		74,941				N/A
Accumulated depreciation			(15,952	)				(5,145	)				(2,566	)			N/A
Construction work in progress			68					—					52,187				N/A

(f)

The Forward Wind Energy Center (Forward Wind) consists of 86 wind turbines located near Brownsville, Wisconsin.

(g)

The Two Creeks solar generation array is located in the Town of Two Creeks and the City of Two Rivers in Manitowoc and Kewaunee Counties, Wisconsin. Date of commercial operation of the solar array was November 2020.

(h)

The Badger Hollow I and II solar farm is located in southwestern Wisconsin in Iowa County, near the villages of Montfort and Cobb. Date of commercial operation of Badger Hollow I was November 2021 and December 2023 for Badger Hollow II.

(i)

The Red Barn Wind Farm is located in the Towns of Wingville and Clifton in Grant County, Wisconsin. MGE purchased its share of Red Barn in 2023.

MGE currently has ongoing jointly-owned generation construction projects. Paris Solar-Battery Park is located in the Town of Paris in Kenosha County, Wisconsin. MGE's ownership interest is 10% and its share of generation is 31 MW. Darien Solar Energy Center is located in Walworth and Rock Counties in southern Wisconsin. MGE's ownership interest is 10% and its share of generation is 25 MW. As of December 31, 2023, $35.0 million and $25.5 million, respectively, (excluding AFUDC) related to Paris and Darien is reflected in "Construction work in progress" on the consolidated balance sheets. Construction of Paris is expected to be completed in two phases. Solar is expected to be completed in 2024 and battery in 2025. Darien is expected to be completed in 2024.