Indiana nears final air permit for 1,350-MW St. Joseph project

St. Joseph Energy Center LLC is nearing a Title IV acid rain permit for its 1,350-MW, gas-fired power project to be located in St. Joseph County, Ind.

The Indiana Department of Environmental Management on July 23 went out for comment, until Aug. 22, on the draft version of that permit. The agency last December issued a final prevention of significant deterioration air permit for this project.

The draft Title IV permit, responding to a June 19 application, covers four natural gas-fired combined cycle combustion turbines, identified as units CCCT1, CCCT2, CCCT3, and CCCT4, each with a combustion turbine equipped with dry low NOx burners, natural gas fired duct burners, and a heat recovery steam generator identified as HRSG1, HRSG2, HRSG3, and HRSG4. NOx emissions would also be controlled by four selective catalytic reduction (SCR) systems (SCR01, SCR02, SCR03 and SCR04), with carbon monoxide (CO) and volative organic compounds (VOC) emissions controlled by oxidation catalyst systems (CAT01, CAT02, CAT03 and CAT04), exhausting to stacks CCCT01, CCCT02, CCCT03, and CCCT04, respectively.

The nominal heat input for each CCCT is 2,300 MMBtu/hr (higher heating value (HHV)). The combined nominal power output is 1,350 MW.

The heat recovery steam generators are not a source of emissions. They have been included for clarity as they are a part of the entire source and operate in conjunction with the duct burners which are a source of emissions, IDEM noted.

St. Joseph Energy Center LLC is a subsidiary of an investment fund managed by EIF Management LLC.

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.