120 MW Wind operating in Harper, OK — Southwest Power Pool
120 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2006
Operating Since
Coordinates
36.6377, -99.6019
County
Harper, OK
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Oklahoma Gas & Electric Co | Invenergy | — |
| Owner(s) | Oklahoma Gas & Electric Co | OGE Energy | — |
| Status | Operating | operating | — |
The Centennial Wind Farm is one of the largest wind farms in Oklahoma. It can produce a total of 120 megawatts of power which is enough electricity to supply about 36,000 homes. The wind farm cost $200 million and is easily visible from U.S. 183 northwest of Fort Supply.
Read more on WikipediaCentennial Wind Farm is a 120 MW wind power plant located in Harper County, Oklahoma. The facility began operating in 2006 and is owned by OGE Energy and operated by Oklahoma Gas & Electric Co. The plant utilizes a single onshore wind turbine generator. The wind turbines have a hub height of 80 meters and a rotor diameter of 77 meters. The turbines were manufactured by GE Wind and are model GE1.5-77.
In the most recent year of data, Centennial Wind Farm generated 170,209 MWh of electricity, achieving a capacity factor of 16.1%. The plant operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region. Centennial Wind Farm is ranked as the 48th largest wind farm in Oklahoma out of 57, and 610th nationally out of 734.
Generated from EIA, GEM, and public data sources
NERC Region
MRO
Balancing Authority
Southwest Power Pool
Grid Voltage
138 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
15.5K MWh
Latest Month
170.2K MWh
Annual Generation
16.1%
Capacity Factor
No financial data available for this plant.
Point of Interconnection
Nearest Substation
Centennial Substation
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
SPP
LMP Node
OKGECENTWIND
Pricing Hub
SPP South Hub
Node Source
EIA-860 direct report
Red Flag Warning: Harper; Woods; Alfalfa; Ellis; Woodward; Major; Roger Mills; Dewey; Custer; Beckham; Washita; Harmon
Red Flag Warning issued March 21 at 12:09PM CDT until March 22 at 9:00PM CDT by NWS Norman OK
Red Flag Warning: Harper; Woods; Alfalfa; Ellis; Woodward; Major; Roger Mills; Dewey; Custer; Beckham; Washita; Harmon
Red Flag Warning issued March 21 at 12:09PM CDT until March 21 at 9:00PM CDT by NWS Norman OK
Fire Weather Watch: Harper; Woods; Alfalfa; Ellis; Woodward; Major; Roger Mills; Dewey; Custer; Beckham; Washita; Harmon
The Fire Weather Watch has been replaced. Please see the latest information from NWS Norman OK on this developing situation.
New wind farm coming to SE Oklahoma
Southeast Oklahoma is about to get another wind farm, one revealed in a recent filing made by the Southwest Power Pool. Overland Station...
Last updated 2026-03-21
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