ESC Brooke County permits 750-MW plant in W.Va. fired by gas/ethane

ESC Brooke County Power I LLC (ESC) applied in March with the West Virginia Department of Environmental Protection for an air permit allowing it to construct, install, and operate a proposed new natural gas- and ethane-fueled combined-cycle combustion turbine (CT) plant.

The project site is located in Follansbee, Brooke County, West Virginia. The site is zoned for industrial use. The proposed primary point of interconnection is along the Tidd-Wylie Ridge 345-kV line controlled by FirstEnergy‘s Monongahela Power subsidiary near the project site. Plant output will be sold into the PJM Interconnection regional electric grid. PJM is currently working the project through its queue process.

This project would have a nominal gross electrical generating capacity of 750 MW, the permit application shows. PJM, in a study on the project dated April 2016, said the installed facilities will have a total capability of 685 MW with 685 MW of this output being recognized by PJM as capacity. 

The emission sources associated with the project are:

  • Two General Electric Frame 7HA.01 combustion turbines (CTs), fueled by natural gas (raw or pipeline quality), ethane, or a blend of these fuels;
  • Two Heat Recovery Steam Generators (HRSGs), one for each CT;
  • One Auxiliary Boiler with a maximum heat input of 111.9 million British Thermal Units per hour (MMBtu/hr), burning natural gas (raw or pipeline quality), ethane, or a blend of these fuels;
  • One Fuel Gas Heater with a maximum heat input of 5.4 MMBtu/hr, burning natural gas (raw or pipeline quality), ethane, or a blend of these fuels;
  • One 2,000 kW diesel Emergency Generator fueled by ultra-low sulfur diesel (ULSD) fuel;
  • One 315 horsepower (hp) emergency diesel Fire Water Pump fueled by ULSD;
  • One wet, mechanical draft Cooling Tower; and
  • Diesel fuel, lubricating oil, and aqueous ammonia storage tanks.

Electricity will be generated using the two combustion turbines, each with a design maximum heat input of approximately 2,907 million British Thermal Units per hour (MMBtu/hr), on a Higher Heating Value (HHV) basis. Each combustion turbine will drive a combustion turbine generator. Electricity generated by the combustion turbine generators will be routed through a dedicated tap and sold on the PJM grid.

The CTs will be equipped with inlet air evaporative cooling systems, which are used to increase the density of the combustion air, thereby increasing fuel and mass flow and, in turn, power output. The air density increase will be accomplished by evaporating water in the inlet air, which will decrease air temperature and correspondingly increase air density.

Each combustion turbine will be coupled with a HRSG to produce steam for a shared steam turbine that will drive a steam turbine generator to generate additional electric power output.

The CTs will be equipped with dry low-NOx (DLN) combustors, or a similar advanced low-NOx combustion technology. These combustion controls, along with Selective Catalytic Reduction (SCR) systems, will control emissions of NOx. Oxidation Catalysts will be used to control carbon monoxide (CO) and volatile organic compounds (VOC) emissions from the CTs. The SCRs and Oxidation Catalysts will be incorporated into the HRSGs, at locations where the emission control reactions can efficiently be stimulated.

Each CT/HRSG module will have its own exhaust stack. Each stack will have a height of 185 feet above grade.

For permitting and emissions estimating purposes, this application assumes that the CTs will operate 8,760 hours per year (hr/yr).

The 111.9 MMBtu/hr Auxiliary Boiler will be used to produce steam for plant support. The Auxiliary Boiler will be equipped with low-NOx burners (LNB) to control NOx emissions. For permitting and emissions estimating purposes, this application assumes that the Auxiliary Boiler will operate the equivalent of 4,576 hr/yr.

ESC said in the application that it wishes to obtain WVDEP air permit approval by October 2016 to provide sufficient time for equipment ordering, fabrication, construction, and installation, and achieve commercial operation in June 2020.

A project contact is: ESC Brooke County Power I LLC, Jon M. Williams, Managing Member, 333 Ganson Street, Buffalo, NY 14202.

A company logo in the application shows this is a project of Energy Solutions Consortium LLC, which says on its website that it is focused on developing gas-based projects in Appalachia. “Most recently, the Energy Solutions team members developed a large combined cycle plant in the PJM Interconnection (Moundsville Power 565 MW), taking the project from concept to a fully permitted status in under 20 months,” said the website. “Energy Solutions leverages the unique skills of its members across multiple disciplines (power and gas markets, environmental, construction management, finance, and tax structure) to deliver efficient and effective solutions to complex projects. Energy Solutions believes in maximizing value by reducing development timelines through detailed risk mitigation practices and site selection due diligence processes.”

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.