Wilkes
Wilkes is a 882 MW natural gas power plant in Marion County, Texas, operated by Southwestern Electric Power Co. EIA-860M lists 3 generating units here, inside SPP. Its units entered service between 1964 and 1971.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 882 MW
- 883 MW net summer
- Generating units
- 3
- In service
- 1964–1971
- EIA plant ID
- 3478
Where it is
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- County
- Marion County, Texas
- Coordinates
- 32.8482, -94.548
- Balancing authority
- SWPP
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Southwestern Electric Power Co
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Steam Turbine
- Status
- Operating
Wilkes: FAQ
- Where is Wilkes?
- In Marion County, Texas (TX). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Wilkes?
- 882 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns Wilkes?
- EIA-860M names Southwestern Electric Power Co as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Wilkes LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Southwestern Electric Power Co here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Wilkes LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Wilkes still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.