Tampa Electric gets final air permit for Polk uprate project

The Florida Department of Environmental Protection on May 15 issued the final air construction permit to Tampa Electric for its planned uprate of the gas-fired combustion turbines at the Polk power plant into a combined-cycle configuration.

The project will utilize four existing combustion turbine-electrical generators (CTGs) and will add four new heat recovery steam generators (HRSGs) equipped with natural gas-fired duct burners, a single 500-MW steam turbine-electric generator (STEG), a mechanical draft cooling tower, transmission upgrades and ancillary equipment. The so-called “Polk 2 Combine Cycle” “4-on-1” facility will have a generating capacity of about 1,160 MW.

The Polk Power Station currently consists of: a nominal 250 MW (net) coal- and petroleum coke-based integrated gasification and combined cycle (Unit 1) including a sulfuric acid plant and an auxiliary boiler; four natural gas-fueled nominal 165-MW simple cycle CTGs designated as Units 2, 3, 4 and 5; and ancillary equipment. Units 2 and 3 are equipped with backup fuel oil-firing capability.

The project involves the conversion of Units 2 through 5 from simple cycle operation to a single “4-on-1” combined cycle operation that will be known as the Polk 2 Combined Cycle. The conversion will be accomplished by adding: a duct-fired HRSG and combined cycle exhaust stack to each CTG; and a single nominal 500 MW steam turbine-electrical generator. The converted units 2, 3, 4 and 5 will be redesignated as Units 2A, 2B, 2C and 2D.

Tampa Electric is a unit of TECO Energy (NYSE: TE).

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.