New Crystal River air permit mandates shutdown of two coal units

Duke Energy Florida recently renewed the Title V air permit for the Crystal River power plant, with a provision included in the revised permit that mandates shutdown of two of the plant’s four coal units.

“Units 1 and 2 shall cease to be operated as coal-fired units by December 31, 2020,” said the revised permit, issued on Nov. 19 by the Florida Department of Environmental Protection. Notable is that on Dec. 16, the DEP issued a final air construction permit for Duke Energy Florida’s 1,640-MW Citrus combined-cycle gas plant, which will be built next to the Crystal River plant and directly replace capacity from Crystal River Units 1 and 2.

Crystal River Units 4 and 5 are also fired by coal, and since they are newer, bigger and equipped with relatively new air emissions control equipment, they are expected to remain in operation for the forseeable future. Crystal River Unit 3 is a recently-retired nuclear facility.

This facility consists of: four coal-fired fossil fuel steam generating (FFSG) units with electrostatic precipitators; two natural draft cooling towers for Units 4 and 5; helper mechanical cooling towers for Units 1 and 2; coal, fly ash, and bottom ash handling facilities; limestone and gypsum material handling activities; hydrated lime storage and transfer system for Units 4 and 5; and various fire pumps and generators. The facility continuously operates low-NOX burners, selective catalytic reduction systems (SCR), flue gas desulfurization systems (FGD) which includes limestone and gypsum material handling activities and acid mist mitigation (AMM) systems for existing Units 4 and 5. In conjunction with the new emissions control equipment, Units 4 and 5 are also authorized to burn a blend of bituminous and sub-bituminous coal. 

  • Unit 1 is a pulverized coal, dry bottom, tangentially-fired boiler. It is rated at 440.5 MW. 
  • Unit 2 is a pulverized coal, dry bottom, tangentially-fired boiler. It is rated at 523.8 MW.
  • Unit 4 and Unit 5 each consist of a pulverized coal, dry bottom, wall-fired boiler rated at 760 MW.

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.