Flint Creek Retrofit Project

To comply with stringent new U.S. Environmental Protection Agency regulations, SWEPCO and plant co-owner Arkansas Electric Cooperative Corp. (AECC) are investing $408 million to install additional environmental control systems at the 528-megawatt, coal-fueled Flint Creek Power Plant in Gentry, Ark.

The project allows the plant to continue to provide reliable 24/7 base load electric power in Northwest Arkansas.

The retrofit project is driven by the EPA's new Mercury and Air Toxics Standards (MATS) and Regional Haze rules. In July 2013, the Arkansas Public Service Commission ruled that the project is in the public interest (SWEPCO news release).

  • Investment - $408 million project ($204 million each by SWEPCO and AECC)
  • Technology - Dry Flue Gas Desulfurization (DFGD or scrubber) with pulse jet fabric filter (commonly called baghouse), Activated Carbon Injection (ACI) and related digital controls – to reduce emissions of sulfur dioxide (SO2), particulate matter (PM), acid gases, mercury and other metals. New Low-Nitrogen Oxide (NOx) Burners and Over fire Air to reduce NOx emissions.
  • New environmental control systems
  • June 2016 – DFGD, ACI and related facilities placed in service *
  • May 2018 – Anticipated in-service date for Low-NOx Burners and Over fire Air

Fact Sheet (PDF)


* Arkansas Department of Environmental Quality granted a 1-year extension from federal April 2015 MATS deadline for projects under construction. The plant began a tie-in outage in March 2016 prior to start-up of the new facilities in June 2016.

Location: Gentry, Ark. (Benton County)
Capacity: 528 megawatts (MW)
Ownership: SWEPCO – 50% (264 MW)
Arkansas Electric Cooperative Corp. (AECC) – 50% (264 MW)
Plant Operator: SWEPCO
Fuel: Low-sulfur coal from Powder River Basin, Wyoming, shipped by rail
In-service date: 1978
Employees: 90
Annual payroll: $3.9 million
Annual property taxes: $1.2 million
Total annual economic output: $28.2 million (Benton and Washington Counties)
Cooling reservoir: 500-acre SWEPCO Lake
Home of Eagle Watch Nature Trail


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