Notes Payable to Banks, Commercial Paper, and Lines of Credit (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Schedule of Short-Term Borrowings

Information concerning short-term borrowings is shown below:

(In thousands)		MGE Energy(a)						MGE
As of December 31,		2020			2019			2020			2019
Available capacity under line of credit	$	96,815		$	150,000		$	46,815		$	100,000
Short-term debt outstanding	$	52,500		$	-		$	52,500		$	-
Letters of credit issued inside credit facilities	$	685		$	-		$	685		$	-
Weighted-average interest rate		0.15	%		-	%		0.15	%		-	%
Year Ended December 31,
Maximum short-term borrowings	$	52,500		$	56,000		$	52,500		$	56,000
Average short-term borrowings	$	6,393		$	18,364		$	6,393		$	18,364
Weighted-average interest rate		0.43	%		2.16	%		0.43	%		2.16	%

(a) MGE Energy short-term borrowings include MGE Energy and MGE lines of credit and MGE commercial paper.