Seminole Electric eyes major gas-fired capacity additions

Seminole Electric Cooperative’s forecasts of capacity and demand include the addition of approximately 1,700 MW of capacity by 2025, with this capacity needed to replace expiring purchased power contracts and to serve increased member load requirements while maintaining Seminole’s reliability criteria.

Future capacity planning was outlined in an annual Ten Year Site Plan that Seminole filed on April 1 at the Florida Public Service Commission.

Seminole’s capacity expansion plan includes the need for four 224-MW class combustion turbine units and one 741-MW combined cycle plant, none of which are currently sited. The four combustion turbine units are scheduled to enter service in December 2021, December 2022, and two units in December 2024. In addition, by June 2021, Seminole also has a need for 741 MW of combined cycle capacity, with a construction start due in 2018.

A final decision as to whether Seminole will construct and own these additional facilities will be based upon future economic studies. The inclusion of these units in Seminole’s capacity expansion plan does not represent at this time a commitment for construction by Seminole.

Deals for Seminole to purchase power that are due to expire by the beginning of 2020 are:

  • Duke Energy Florida, 250 MW, Began 1/1/2014, Ends 5/31/2016;
  • Duke Energy Florida, 50 MW, Began 6/1/2016, Ends 12/31/2018;
  • Duke Energy Florida, 150 MW, Began 1/1/2014, Ends 5/31/2016;
  • Lee County, Florida, Waste Landfill, 55 MW, Began 1/1/2009, Ends 12/31/2016;
  • Seminole Energy LLC, Landfill Gas, 6.2 MW, Began 10/1/2007, Ends 3/31/2018; and
  • Brevard Energy LLC, Landfill Gas, 9 MW, Began 4/1/2008, Ends 3/31/2018.

In March 2015 Seminole issued a request for proposals for 2 MW of solar photovoltaic (PV) energy either through an Engineer, Procure, and Construct (EPC) contract or through a Purchase Power Agreement (PPA) to be in commercial operation on or before Nov. 2, 2016. Seminole has incorporated a 2 MW solar photovoltaic facility into this ten year plan. On March 21, 2016, Seminole finalized agreements for a 2.2 MW solar facility to be constructed at Seminole’s Midulla Generating Station (MGS) site in Hardee County.

Three possible sites were named for new generating capacity:

  • Gilchrist Site, Gilchrist County, Florida – Seminole owns land in Gilchrist County but has not made a final determination if or when the site will be used for any of Seminole’s future resource requirements. The Gilchrist site is approximately 530 acres in size. The site is located in the central portion of Gilchrist County, approximately eight miles north of the City of Trenton and may be suitable for installation of generation or transmission resources.
  • Seminole Generating Station (SGS), Putnam County, Florida – SGS, an existing power plant, is located in a rural unincorporated area of Putnam County approximately five miles north of the City of Palatka. The site is 1,978) acres bordered by U.S. 17 on the west, and is primarily undeveloped land on the other sides. The site was certified in 1979 for two 650-MW ccoal-fired units, SGS Units 1 and 2. Those units were built. Plans for a coal-fired Unit 3 were abandoned a few years ago after then-Gov. Charlie Crist decided that dealing with climate change was a top priority for the state.
  • Midulla Generating Station (MGS), Hardee County, Florida – MGS is located in Hardee and Polk counties about nine miles northwest of Wauchula. The site is bordered by County Road 663 on the east and by The Mosaic Co. on the south, north and west. Payne Creek flows along the site’s south and southwestern borders. The site was originally strip-mined for phosphate and was reclaimed as pine flatwoods, improved pasture, and a cooling reservoir with a marsh littoral zone.
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.