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132 MW Wind operating in Roger Mills, OK — Southwest Power Pool
132 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2012
Operating Since
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Acciona Wind Energy USA LLC | Acciona | — |
| Owner(s) | Acciona Wind Energy USA LLC | Acciona | — |
| Status | Operating | operating | — |
Dempsey Ridge Wind Farm is a 132 MW wind power facility located in Roger Mills County, Oklahoma. The plant began operating in 2012 and utilizes a single generator. The facility is owned and operated by Acciona Wind Energy USA LLC, a subsidiary of the Spanish company Acciona. It ranks as the 44th largest wind farm in Oklahoma out of 57, and 572nd nationally out of 734.
The wind farm's turbines are Gamesa G90-2.0 models, featuring a 90-meter rotor diameter and a hub height of 78 meters. In its most recent year of operation, Dempsey Ridge generated 116,503 MWh of electricity, achieving a capacity factor of 10.0%. The plant is located within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region.
Generated from EIA, GEM, and public data sources
ISO/RTO
SPP
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Southwest Power Pool (SWPP)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
5.7K MWh
Latest Month
116.5K MWh
Annual Generation
10.0%
Capacity Factor
2013
$1,895/kW
Est. Construction Cost
Total estimated cost: $250.2M
Market Position
ISO/RTO Market
SPP
LMP Node
DEMPSEY_RIDGE_WIND
Pricing Hub
SPP South Hub
Location Type
Settlement Location
Node Source
EIA-860 direct report
Last updated 2026-03-26
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