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Joint Plant Ownership | 9 Months Ended
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Sep. 30, 2021
Public Utilities Property Plant And Equipment [Abstract] |
Jointly Owned Electric Utility Plant | Joint Plant Constr uction Project Ownership - MGE Energy and MGE MGE currently has ongoing jointly-owned solar generation construction projects, as shown in the following table. Incurred costs are reflected in "Construction work in progress" on the consolidated balance sheets.
|  | Ownership |  |  | Share of |  | Share of |  | Costs incurred as of September 30, |  | Date of Commercial
Project |  | Interest |  |  | Generation |  | Estimated Costs |  | 2021(a) |  | Operation
Badger Hollow I(b) |  |  | 33 | % |  |  | 50 |  | MW |  | $ | 65 |  | million |  | $ | 57.8 |  | million |  | Q4 2021(c)
Badger Hollow II(b) |  |  | 33 | % |  |  | 50 |  | MW |  | $ | 65 |  | million |  | $ | 11.5 |  | million |  | December 2022(c)
(a) Excluding AFUDC. (b) The Badger Hollow I and Badger Hollow II solar farms are located in southwestern Wisconsin in Iowa County, near the villages of Montfort and Cobb. (c) Estimated date of commercial operation. MGE received specific approval to recover 100% AFUDC on each of these projects. During the three and nine months ended September 30, 2021, MGE recognized $1.3 million and $3.6 million, respectively, after tax, in AFUDC for Badger Hollow I and II compared to $0.9 million and $1.8 million for the comparable periods in 2020.

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- Definition Describes significant information about our ongoing solar generation projects: Two Creeks and Bager Hollow I and II. + References No definition available. + Details
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