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Joint Plant Ownership
3 Months Ended
Mar. 31, 2024
Public Utilities, Property, Plant and Equipment [Abstract]  
Jointly Owned Electric Utility Plant Joint Plant Construction 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.

 

Project

 

Ownership Interest

 

Source

 

Share of
Generation

 

Share of Estimated
Costs
(a)

 

Costs incurred as
of March 31, 2024
(a)

 

Estimated Date of
Commercial
Operation

Paris(b)

 

10%

 

Solar/Battery

 

20 MW/11 MW

 

$61 million(d)

 

$35.7 million

 

2024 Solar
2025 Battery

Darien(c)

 

10%

 

Solar

 

25 MW

 

$48 million(d)(e)

 

$29.5 million

 

2024

 

(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)
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.
(e)
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 Paris and Darien. During the three months ended March 31, 2024, MGE recognized $1.2 million, after tax, in AFUDC for these projects compared to $0.4 million for the comparable period in 2023.