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Variable Interest Entities (Tables)
12 Months Ended
Dec. 31, 2016
MGE Power Elm Road [Member]  
Variable Interest Entity [Line Items]  
Variable interest entities significant balance sheet accounts

At December 31, MGE has included the following significant accounts on its consolidated balance sheets related to its interest in this VIE:

(In thousands)20162015
Property, plant, and equipment, net$175,502$177,904
Construction work in progress3,2412,400
Deferred income taxes42,52540,865
Long-term debt62,02164,622
Noncontrolling interest80,36279,113
MGE Power West Campus [Member]  
Variable Interest Entity [Line Items]  
Variable interest entities significant balance sheet accounts

At December 31, MGE has included the following significant accounts on its consolidated balance sheets related to its interest in this VIE:

(In thousands)20162015
Property, plant, and equipment, net$81,588$84,403
Affiliate receivables4,7695,295
Deferred income taxes19,91219,612
Long-term debt44,93246,510
Noncontrolling interest35,30337,603