Power Sources

MGE generates and distributes electricity to approximately 151,000 customers. MGE owns generation units or purchases electricity through contracts and from the Midcontinent Independent System Operator energy market.


West Campus Cogeneration Facility

West Campus Cogeneration Facility
  • This 150-megawatt (MW) natural gas-fired facility provides electricity to MGE customers and steam heat and chilled-water air-conditioning to the UW-Madison campus.
  • Through the efficiency of cogeneration and emission controls, it is one of the cleanest power plants in the Midwest.
  • The facility, jointly owned by MGE and the State of Wisconsin, began operation in spring 2005.
  • For more information

Wind Farms

Wind Farms
  • MGE has wind energy capacity of 137 MW.
  • MGE owns two wind farms that have a combined capacity of 41 MWs:
  • MGE plans to own and operate a 66-MW wind farm near Saratoga in Howard County, Iowa. The 33-turbine farm is expected to come online in early 2019, making it our largest to date. It will deliver renewable energy to power approximately 47,000 average homes.
  • In addition, MGE purchases 96 MWs of wind capacity from three other Midwestern wind farms.

Columbia Energy Center

Columbia Energy Center
  • MGE is part owner of the Columbia Energy Center near Portage, Wis., along with Wisconsin Public Service and Alliant Energy.
  • Built in the early 1970s, the facility has two coal-fired units of about 500 MW each.
  • Alliant Energy is the operating utility.

Blount Generating Station

Blount Generating Station
  • MGE owns and operates the 100-MW Blount plant in central Madison. The original plant was built in 1902 and expanded several times.
  • The plant operates on natural gas.
  • Under MGE's Energy 2015 plan, Blount discontinued burning coal at the end of 2011.
  • For more information

Elm Road Generating Station at Oak Creek

Oak Creek Power Plant
  • MGE is part owner of the Elm Road Generating Station at the Oak Creek Power Plant located in Oak Creek, Wis., along with We Energies and Wisconsin Public Power Inc.
  • Unit 1 began operation in February 2010 and Unit 2 in January 2011. The units produce a total of 1,230 MW.
  • MGE receives a total of 100 MW from the plant—50 MW from each unit.


Solar Power

As of Jan. 30, 2018, MGE has about 6,692 kilowatts of solar capacity on its grid. This capacity includes:

  • Photovoltaic installations owned by MGE including nearly 500 solar panels at MGE's headquarters that help supply almost 10% of the building's annual electric needs.
  • Customer-owned solar that is connected to our grid.
  • Shared Solar installation on the roof of the City of Middleton Municipal Operations Center.



MGE purchases electricity from two local biogas sources:

  • Electricity generated from methane at a Dane County landfill. This site produces approximately 30 million-kilowatt hours (kWh) per year—enough for about 4,600 homes.
  • Electricity generated from a manure digester in western Dane County. The digester generated 4.6 million kWh in 2014—enough for about 700 homes.

Combustion Turbines

Combustion Turbine
  • MGE's electric system includes five combustion turbines located at three Madison-area substations. These units are used to provide system reliability, especially in times of heavy electric use.
  • MGE owns and operates a natural gas-fired generator near Marinette, Wis. The 83-MW unit began operation in June 2000. MGE operates the unit from its headquarters in Madison.

Backup Generation

Back Up Generartion
  • MGE owns and operates 55 backup generators located at business customers' sites. The total capacity of these units is about 50 MW.
  • Customers pay a monthly fee to have this generation available if power is interrupted.
  • MGE also can use these units to boost system reliability during an electrical emergency.

Purchased Power

Purchased Power
  • MGE buys power from other utilities through contracts and from the Midcontinent Independent System Operator (MISO) energy market.
  • The power is delivered over the transmission lines that serve our area.