EX-21 6 exh21.htm Converted by EDGARwiz

Exhibit 21


Subsidiaries of MGE Energy, Inc.



As of December 31, 2006, the company held the following subsidiaries (all Wisconsin corporations):


Central Wisconsin Development Corporation - assists new and expanding businesses throughout central Wisconsin by participating in planning, financing, property acquisition, joint ventures and associated activities.


Madison Gas and Electric Company - a regulated utility that generates and distributes electricity to nearly 135,000 customers in Dane County, Wisconsin, and purchases and distributes natural gas to more than 138,000 customers in seven Wisconsin counties.


MAGAEL, LLC - holds title to property acquired by the company for future utility plant expansion and nonutility property.


MGE Construct LLC - provides construction services for building new generation to meet the needs of MGE customers.


MGE Power LLC - owns real estate and new generating assets required to meet MGE's growing customer demand.


MGE Power West Campus, LLC - owns a controlling interest in the electric generating assets related to the West Campus Cogeneration Facility (WCCF). MGE Power West Campus is a wholly owned subsidiary of MGE Power. MGE Power West Campus leases their share of these assets to Madison Gas and Electric Company through a long-term lease agreement.


MGE Power Elm Road, LLC - has an 8.33% undivided ownership interest in two coal-fired generating plants being constructed in Oak Creek, Wisconsin. MGE Power Elm Road is a wholly owned subsidiary of MGE Power. MGE Power Elm Road will lease their share of the coal-fired generating plant to Madison Gas and Electric Company through a long-term lease agreement.


MGE Transco Investment, LLC - invests in companies engaged in the business of providing electric transmission services, such as ATC.