New air controls completed at Ottumwa coal plant in Iowa

MidAmerican Energy, prompted by a March 17 rate order from the Iowa Utilities Board, told the board on Dec. 29 that an emissions project at the coal-fired Ottumwa Generating Station (OGS) has been completed.

“This compliance filing serves as notice to the Board that the new OGS environmental equipment project was completed and placed into service on December 22, 2014,” said the brief notice.

The co-owners of the 675-MW, single-unit Ottumwa plant were installing a scrubber and baghouse to reduce SO2 and mercury emissions. Interstate Power and Light owns a 48% interest in Ottumwa. Construction began in the second quarter of 2012.

The reason for the Dec. 29 filing was this passage from the March 17 board order: “The Board recognizes that the OGS improvements are not yet installed and operational. MidAmerican will not be allowed to implement the third year of the revenue phase-in until it has notified the Board that the new OGS environmental equipment is used and useful (i.e., completed and operational).”

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.