Gary Wolter, chairman of the board of MGE Energy and of subsidiary Madison Gas & Electric, will step down from those positions on October 1. 

Wolter will remain a member of the boards of directors, though, according to documents filed with federal regulators.

Wolter was president and CEO of the companies from February 2000 until he retired in March 2017.

Jeffrey Keebler, who succeeded Wolter as president and CEO, also will take over as chairman of the boards when Wolter leaves the positions.

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