Dempsey Ridge Wind Farm
Dempsey Ridge Wind Farm is a 132 MW wind farm in Roger Mills County, Oklahoma, operated by Acciona Wind Energy USA LLC. EIA-860M lists 1 generating unit here, inside SPP. Its unit entered service in 2012.
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
- 132 MW
- 132 MW net summer
- Generating units
- 1
- In service
- 2012
- EIA plant ID
- 56665
Where it is
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- County
- Roger Mills County, Oklahoma
- Coordinates
- 35.5298, -99.8145
- Balancing authority
- SWPP
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Acciona Wind Energy USA LLC
- Primary energy source
- Wind
- Technologies
- Onshore Wind Turbine
- Status
- Operating
Dempsey Ridge Wind Farm: FAQ
- Where is Dempsey Ridge Wind Farm?
- In Roger Mills County, Oklahoma (OK). 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 Dempsey Ridge Wind Farm?
- 132 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Dempsey Ridge Wind Farm?
- EIA-860M names Acciona Wind Energy USA LLC 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 Dempsey Ridge Wind Farm LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Acciona Wind Energy USA LLC 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 "Dempsey Ridge Wind Farm LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Dempsey Ridge Wind Farm still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.