CENTENNIAL WIND FARM
OperatingWind power plant
- Capacity
- 120 MW
- Primary fuel
- Wind
- County
- Harper County
- Operator
- OKLAHOMA GAS & ELECTRIC CO
- Status
- Operating
- Commissioned
- 2006
- EIA plant ID
- 56380
- Generators
- 1
- Technology
- Onshore Wind Turbine
- Net generation (2024)
- 170 GWh
- Capacity factor (2024, EIA nameplate)
- 16%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 36.6392, -99.6031
CENTENNIAL WIND FARM, a 120 MW Wind power plant in Harper County, Oklahoma. Operated by OKLAHOMA GAS & ELECTRIC CO, commissioned 2006.
How CENTENNIAL WIND FARM compares
With 120 MW of capacity, CENTENNIAL WIND FARM ranks 40th among the 73 operating power plants Bywatts maps in Oklahoma and 12th of the 23 operating Wind plants in the state. It accounts for about 4.0% of Oklahoma's operating Wind capacity and 0.5% of all operating capacity in the state. Nationally it is the 184th-largest of the 708 operating Wind plants in the database. Commissioned in 2006, it is newer than 66% of the 72 operating Oklahoma plants with a recorded commissioning year. Its operator, OKLAHOMA GAS & ELECTRIC CO, runs 10 operating plants in Oklahoma totaling 8,515 MW. It shares Harper County with 3 other operating plants, including SLEEPING BEAR LLC and BUFFALO BEAR LLC.
EIA-860 lists 1 generator at the site with 120 MW of nameplate capacity, all onshore wind turbine technology. Net generation was 170 GWh in 2024 (a 16% capacity factor), down 2% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 138 kV line, under 0.1 miles away. Another 5 operating power plants totaling 321 MW sit within 25 miles; the largest is OKLAHOMA WIND ENERGY CENTER (102 MW, Wind).
Computed by Bywatts from HIFLD power plant and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
CENTENNIAL WIND FARM is a 120 MW wind power plant in Harper County, OK, operated by OKLAHOMA GAS & ELECTRIC CO, commissioned in 2006. Harper County carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.9 of 5 at the 96th national percentile. Ice storm is the leading peril, rated Very High by FEMA at the 100th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a wind plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Harper County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Ice storm | Very High | 100th | 5.0 of 5 | 0.61 |
| Strong wind | Relatively Low | 94th | 4.8 of 5 | 3.8 |
| Wildfire | Relatively Low | 93rd | 4.7 of 5 | 0.01 |
| Hail | Relatively Low | 92nd | 4.7 of 5 | 8.7 |
| Heat wave | Very Low | 92nd | 4.7 of 5 | 5.6 |
| Winter weather | Very Low | 83rd | 4.3 of 5 | 9.9 |
| Lightning | Very Low | 77th | 4.1 of 5 | 47.6 |
| Tornado | Relatively Low | 59th | 3.3 of 5 | 0.81 |
| Riverine flooding | Very Low | 54th | 3.2 of 5 | 0.29 |
| Earthquake | Very Low | 34th | 2.4 of 5 | <0.01 |
| Hurricane | Very Low | 24th | 1.9 of 5 | <0.01 |
Perils not assessed in Harper County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Harper County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.