Coal-to-gas conversion of Valley cogen in Wisconsin almost finished

Wisconsin Electric Power d/b/a We Energies on Oct. 15 told the Public Service Commission of Wisconsin that the the second and final coal-to-gas conversion at the Valley cogeneration plant is about completed, with the unit due for startup on gas by Nov. 15.

The filing was a quarterly report on the project, covering the third quarter. The commission had approved the project in March 2014.

Construction on Unit 1 started April 2014 and is 100% complete. Unit 2 construction started November 2014. Unit 2 is scheduled to be in service by Nov. 15, 2015. Unit 1 was placed in service on Nov. 5, 2014.

Located along the Menomonee River in Milwaukee, this is a cogen that generates electricity for the grid and produces steam for nearly 450 customers in downtown Milwaukee.

Valley has two generating units of about 140 MW apiece. Steam for each unit is provided by two boilers (Generating Unit 1 is served by Boilers B21 and B22; Generating Unit 2 is served by Boilers B23 and B24). These four identical Riley dry bottom wall-fired boilers have historically been fired by coal. The gas conversion project consisted of the removal, installation, and modification of the fuel-burning equipment at Valley to allow the plant to burn natural gas.