Southern Illinois Clean Energy Center

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This article is part of the Coal Issues portal on SourceWatch, a project of Global Energy Monitor and the Center for Media and Democracy. See here for help on adding material to CoalSwarm.

Southern Illinois Clean Energy Center is a proposed coal plant, to be built in Marion, Illinois (Williamson County).[1][2]

In 2005, Steelhead Energy Company LLC proposed to build the new Integrated Gasification Combined Cycle (IGCC) coal plant. Steelhead Energy is owned by ArcLight Capital (private equity) and managed by Madison Power Corp. The project also includes a coal-to-substitute natural gas facility and will be built adjacent to a new coal mine. [3]

Madison Power’s 600 MW Marion Gasification Plant (IGCC) plant in Marion, Illinois has been placed on hold due to construction of a nearby supercritical coal plant which has hindered power demand and tied up transmission and coal transport infrastructure. October 2007.[4]

As of December 2007, the Environmental Protection Agency considers the project application inactive and plans for the plant are not moving forward.[5]

Project Details

Sponsor: Steelhead Energy Company, LLC
Owner/Manager: Owned by ArcLight Capital (Private Equity); Managed by Madison Power Corp Location: Marion, Illinois (Williamson County), Illinois
Size: 545 MW
Type: IGCC
Projected in service: TBD
Status: Inactive


Citizen Groups



  1. “Tracking New Coal-Fired Power Plants,” National Energy Tech Lab, May 1, 2007, page 12. (Pdf)
  2. Conrad Anderson, "Developing Gasification Projects in a Difficult Environment," Madison Power Corp, November 7, 2007 (pdf)
  3. "Stopping the Coal Rush", Sierra Club, accessed December 2007. (This is a Sierra Club list of new coal plant proposals.)
  4. Alex Klein,“TECO, Nuon Cancellations Underscore IGCC’s Woes,” Emerging Energy Research, October 5, 2007, Exhibit 2.
  5. "Stopping the Coal Rush", Sierra Club, accessed December 2007. (This is a Sierra Club list of new coal plant proposals.)

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