MGE has ownership interests in generation projects with other co-owners, some of which are under construction, as shown in the following table. Incurred costs are reflected in "Property, plant, and equipment, net" or "Construction work in progress" on the consolidated balance sheets.

Project

Ownership Interest

Source

Share of 
Generation

Share of Estimated 
Costs(a)

Costs incurred as 
of September 30, 2023(a)

Date of 
Commercial 
Operation

Red Barn(b)

10%

Wind

9.16 MW

$18 million

$16.5 million

April 2023

Badger Hollow II(c)

33%

Solar

50 MW

$86 million(i)

$58.9 million(f)

Late 2023 or 
early 2024(g)

Paris(d)

10%

Solar/Battery

20 MW/11 MW

$61 million(i)

$34.5 million

2024(g) Solar
2025(g) Battery

Darien(e)

10%

Solar

25 MW

$46 million(i)(j)

$21.9 million

2024(g)

West Riverside

3.4%

Natural Gas

25 MW

$25 million

$24.7 million

(h)

(a)

Excluding AFUDC.

(b)

The Red Barn Wind Farm is located in the Towns of Wingville and Clifton in Grant County, Wisconsin.

(c)

The Badger Hollow II solar farm is located in southwestern Wisconsin in Iowa County, near the villages of Montfort and Cobb.

(d)

Paris Solar-Battery Park is located in the Town of Paris in Kenosha County, Wisconsin.

(e)

Darien Solar Energy Center is located in Walworth and Rock Counties in southern Wisconsin.

(f)

Includes an allocation of common facilities at Badger Hollow placed in service in November 2021.

(g)

Estimated date of commercial operation.

(h)

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.

(i)

Estimated costs are expected to exceed PSCW previously approved CA levels. Notifications are provided to the PSCW when costs increase above CA levels. MGE has and will continue to request recovery of the updates in its rate case proceedings.

(j)

As part of its order, the PSCW approved battery capacity with this project, which is no longer included in the current estimate. We will continue to evaluate timing, cost, and feasibility of the installation of batteries.

MGE received specific approval to recover 100% AFUDC on Badger Hollow II, Paris, and Darien. During the three and nine months ended September 30, 2023, MGE recognized $1.9 million and $4.8 million, respectively, after tax, in AFUDC for these projects compared to $1.1 million and $2.1 million for the comparable periods in 2022.