Wisconsin Electric’s Valley coal-to-gas conversion to be completed this fall

The coal-to-gas converted Unit 1 of Wisconsin Electric Power‘s Valley plant went into service this past November, and the converted Unit 2 is due in-service around Oct. 31 of this year.

Wisconsin Electric Power, in a project update filed April 30 at the Public Service Commission of Wisconsin, said that construction on Unit 1 started in April 2014 and is 100% complete. Unit 2 construction started November 2014. Project engineering is 97% complete. Procurement is 94% complete.

The plant’s electric capacity after this conversion is expected to remain at 280 MW. Located along the Menomonee River in Milwaukee, this is a cogeneration plant 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 been fired by coal. 

The gas conversion project consists of the removal, installation, and modification of the fuel-burning equipment at Valley to allow the plant to burn natural gas. It also includes removal, installation, and modification of the plant auxiliary systems to reliably supply steam to the utility’s downtown Milwaukee steam system while significantly reducing minimum electrical output.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.