Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2019

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

Schedule II
MGE Energy, Inc. and Madison Gas and Electric Company
Valuation and Qualifying Accounts
			Additions
		Balance at Beginning of Period	Charged to Costs and Expenses	Charged to Other Accounts	Net Accounts Written Off(a)		Balance at End of Period
Fiscal Year 2017:
Accumulated provision for uncollectibles	$	3,443,296	1,015,970	20,400	(1,304,721)	$	3,174,945
Fiscal Year 2018:
Accumulated provision for uncollectibles	$	3,174,945	1,065,970	320,400	(1,407,653)	$	3,153,662
Fiscal Year 2019:
Accumulated provision for uncollectibles	$	3,153,662	1,614,943	20,160	(1,530,496)	$	3,258,269

(a)Net of recovery of amounts previously written off.