Florida Power and Light permits replacement of emergency generators at Sanford plant

The Florida Department of Environmental Protection went out for public comment on June 2 on a draft air permit approval for Florida Power and Light to install a new/old emergency generator at the Sanford Power Plant, which is located in Volusia County.

“The purpose of this permitting project is to replace both EU 027 and 028 emergency generators with an emergency generator (EU-031) from the de-commissioned Putnam Power Plant (currently EU-014 in Permit No. 1070014-008-AV),” said a DEP permit document. “The Department views this as a net benefit to the environment by replacing two (2) older emergency generators with a newer 2008 New Source Performance Standard (NSPS) certified emergency generator.”

A “Ten Year Site Plan” for 2015 that FPL filed in April at the Florida Public Service Commission said about Putnam: “As explained in FPL’s 2014 Site Plan, analyses conducted during 2013 and early 2014 showed that it would be cost-effective to retire two existing units, Putnam Units 1 & 2, and replace the capacity with new combined cycle (CC) capacity at a later date and at a site to be determined. The new CC capacity would have a significantly better heat rate, thus reducing FPL’s system fuel usage and system emissions. As a result, these two units were retired at the end of 2014.”

EU in the permitting documents, by the way, refers to “Emissions Unit.” The existing Sanford facility is a nominal 2,156-MW plant that consists mainly of:

  • Repowered Unit 4 (EU-005-EU-008) is a “4-on-1” combined cycle combustion turbine system consisting of four combustion turbines, four unfired heat recovery steam generators (HRSG) and the repowered steam-electrical generator set. Each combustion turbine can produce a nominal 170 MW and the repowered steam-electrical generator set is rated at 490 MW. Combined, the four HRSG recover enough waste heat to produce a nominal 320 MW of steam-generated power from the repowered steam-electrical set. Each combustion turbine fires natural gas and is equipped with electric fuel heaters to preheat the natural gas for cold startups.
  • Repowered Unit 5 (EU-009-EU-012) is a “4-on-1” combined cycle combustion turbine system consisting of four combustion turbines, four unfired HRSG and the repowered steam-electrical generator set. Each combustion turbine can produce a nominal 170 MW and the repowered steam-electrical generator set is rated at 490 MW. Combined, the four HRSG recover enough waste heat to produce a nominal 320 MW of steam-generated power from the repowered steam-electrical set. Each combustion turbine fires natural gas as the primary fuel and is equipped with electric fuel heaters to preheat the natural gas for cold startups.

Incidentally, the Florida DEP sent a March 24 letter to FPL acknowledging that the termination date of the Title V air permit for the Putnam plant had been moved back to Dec. 31, 2014, to account for the retirement of the plant and the removal of its emissions units. The old permit expiration date had been Dec. 31, 2018.

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.