Luminant nears permits for combined-cycle Eagle Mountain project

Eagle Mountain Power Co. LLC is nearing approvals from the Texas Commission on Environmental Quality (TCEQ) on Proposed Air Quality Permit Number 117026, Prevention of Significant Deterioration (PSD) Air Quality Permit Number PSDTX1390, and Nonattainment Permit Number (NA) N194, covering construction of the Eagle Mountain Steam Electric Station in Tarrant County, Texas.

The commission on March 30 posted to its website a March 26 notice of intent to approve these permits.

Eagle Mountain Power owns the Eagle Mountain Steam Electric Station (EMSES). Eagle is proposing to construct two new combined cycle combustion turbines (CTGs) which will sell electric power on the wholesale electric market. The ancillary equipment includes an auxiliary boiler, a firewater pump, an emergency generator, a steam turbine, and various support facilities.

The station will consist of two CTGs each equipped with a supplementary fired duct burners (DB) and heat recovery steam generator (HRSG). The CTGs and DBs are to be fueled with pipeline quality natural gas. The CTGs will operate in combined cycle mode. The gas turbines will be one of two options:

  • Two Siemens Model SGT6-5000F(5)ee CTGs each rated at nominal capacity of 231 MW. Each CTG will have a duct-fired HRSG with a maximum heat input of 500 million British thermal units per hour (MMBtu/hr).
  • Two General Electric Model 7FA (GE7FA) CTGs each rated at nominal capacity of 210 MW. Each CTG will have a duct fired HRSG with a maximum heat input of 349 MMBtu/hr.

Eagle Mountain Power is an affiliate of Luminant, which lately has been permitting several gas-fired power projects in Texas. The Eagle Mountain plant is an old facility with retired steam units, with the new plant to use some of the existing infrastructure. Notable is that Eagle Mountain Power, Luminant, parent Energy Future Holdings and various affiliates are all in Chapter 11 bankruptcy protection, awaiting a workout of their finances.

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.