Equity and Financing Arrangements	6 Months Ended
Jun. 30, 2023
Equity and Financing Arrangements Disclosure [Abstract]
Equity and Financing Arrangements	6. Equity and Financing Arrangements. a. Common Stock - MGE Energy. Shares of MGE Energy common stock are sold through MGE Energy's Direct Stock Purchase and Dividend Reinvestment Plan (the Stock Plan). Those shares may be newly issued shares or shares that are purchased in the open market by an independent agent for participants in the Stock Plan. Sales of newly issued shares under the Stock Plan are covered by a shelf registration statement that MGE Energy filed with the SEC. During the three and six months ended June 30, 2023 and 2022, MGE Energy issued no new shares of common stock under the Stock Plan. b. Dilutive Shares Calculation - MGE Energy. As of June 30, 2023, 19,290 shares were included in the calculation of diluted earnings per share related to nonvested equity awards. See Footnote 7 for additional information on share-based compensation awards. c. Long-Term Debt - MGE Energy and MGE. In March 2023, $19.3 million of City of Madison, Wisconsin Industrial Development Revenue Refunding Bonds (Madison Gas and Electric Company Project), Series 2020A were remarketed. As a result of the remarketing, the Series 2020A Bonds will carry an interest rate of 3.75% per annum over its remaining 5-year life. The remarketed Series 2020A Bonds will not be subject to further remarketing or optional redemption prior to their maturity.

Equity and Financing Arrangements

6 Months Ended

Jun. 30, 2023

Equity and Financing Arrangements Disclosure [Abstract]

Equity and Financing Arrangements.

Common Stock - MGE Energy.

Shares of MGE Energy common stock are sold through MGE Energy's Direct Stock Purchase and Dividend Reinvestment Plan (the Stock Plan). Those shares may be newly issued shares or shares that are purchased in the open market by an independent agent for participants in the Stock Plan. Sales of newly issued shares under the Stock Plan are covered by a shelf registration statement that MGE Energy filed with the SEC. During the three and six months ended June 30, 2023 and 2022, MGE Energy issued no new shares of common stock under the Stock Plan.

Dilutive Shares Calculation - MGE Energy.

As of June 30, 2023, 19,290 shares were included in the calculation of diluted earnings per share related to nonvested equity awards. See Footnote 7 for additional information on share-based compensation awards.

Long-Term Debt - MGE Energy and MGE.

In March 2023, $19.3 million of City of Madison, Wisconsin Industrial Development Revenue Refunding Bonds (Madison Gas and Electric Company Project), Series 2020A were remarketed. As a result of the remarketing, the Series 2020A Bonds will carry an interest rate of 3.75% per annum over its remaining 5-year life. The remarketed Series 2020A Bonds will not be subject to further remarketing or optional redemption prior to their maturity.