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MGE ENERGY INC

For the period ended Mar 31, 2025. Filed May 7, 2025.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2025 · Filed May 7, 2025

MGEE$80.19-0.1%Stored close · as of Nov 9, 2026

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Contents

12. Joint Plant Construction Project Ownership

uction Project Ownership - MGE Energy and MGE

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.

ProjectOwnership InterestSourceShare of GenerationShare of Estimated Costs(a)Costs incurred as of March 31, 2025(a)Date of Commercial Operation
Paris(b)10%Battery11 MW$25 million(f)$22.9 million2025 Battery(g)
Darien(c)10%Solar/Battery25 MW/7.5 MW$63 million(f)$47.1 millionMarch 2025 Solar2026 Battery(g)
Koshkonong(d)10%Solar/Battery30 MW/16.5 MW$104 million(f)$20.0 million2026 Solar(g)2027 Battery(g)
High Noon(e)10%Solar/Battery30 MW/16.5 MW$99 million$1.1 million2027(g)

(a)

Excluding AFUDC.

(b)

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

(c)

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

(d)

Koshkonong Solar Energy Center is located in the Towns of Christiana and Deerfield in Dane County, Wisconsin.

(e)

High Noon Solar Project is located in Columbia County, Wisconsin.

(f)

Estimated costs are expected to exceed PSCW previously approved Certificate of Authority (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.

(g)

Estimated date of commercial operation.

MGEreceived specific approval to recover 100% AFUDC on Paris, Darien, and Koshkonong. During the three months ended March 31, 2025, MGE recognized $1.6 million, after tax, in AFUDC for these projects compared to $1.2 million for the comparable period in 2024.

Reven

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.