TVA, Dupont agree to convert Johnsonville turbine to CHP configuration

The Tennessee Valley Authority and DuPont on Jan. 8 announced the continuation of a partnership to generate power and steam at TVA’s Johnsonville site in Humphreys County, Tenn.

The two companies, which have shared an arrangement in the county for nearly 20 years, recently agreed on a plan to convert an existing, limited-use combustion turbine at Johnsonville into a highly efficient combined heat and power (CHP) plant. The turbine will produce electricity for TVA customers and steam for DuPont.

TVA has long provided steam to DuPont from the Johnsonville Fossil Plant, a unique cogeneration relationship in the TVA system. But with TVA retiring the last four coal-fired units at Johnsonville by the end of 2017 under its clean-air agreement with the U.S. Environmental Protection Agency, a new steam source had to be found.

The new, more efficient, 87-MW, gas-fired CHP facility will serve to generate power as needed for TVA customers as well as steam for DuPont’s manufacturing operations when it comes online in January 2018. TVA operates 20 combustion turbine gas units at Johnsonville, including the one that will be converted to cogeneration.

“Obviously, we’re pleased that we could work with TVA in identifying a solution that maintains the long-standing relationship we share in Humphreys County,” DuPont Johnsonville Plant Manager Greg Martz said. “Our unique public-private partnership not only benefits our organizations, but it’s also critical to the economic well-being of this region through our combined community efforts and the 1,000 well-paid jobs that remain here.”

“It really is a win-win,” said Gary Harris, TVA vice president of Industrial Marketing and Services. “This new plant will produce reliable power for our customers and their end-use energy consumers while also providing DuPont with the process steam needed in its manufacturing operations next door.”

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.