ONETA ENERGY CENTER
OperatingNatural Gas power plant
- Capacity
- 1,214 MW
- Primary fuel
- Natural Gas
- County
- Wagoner County
- Operator
- CALPINE ONETA POWER LLC
- Status
- Operating
- Commissioned
- 2002
- EIA plant ID
- 55225
- Generators
- 6
- Technology
- Natural Gas Fired Combined Cycle
- Net generation (2024)
- 5,647 GWh
- Capacity factor (2024, EIA nameplate)
- 53%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 36.0118, -95.6966
ONETA ENERGY CENTER, a 1,214 MW Natural Gas power plant in Wagoner County, Oklahoma. Operated by CALPINE ONETA POWER LLC, commissioned 2002.
How ONETA ENERGY CENTER compares
With 1,214 MW of capacity, ONETA ENERGY CENTER ranks 6th among the 73 operating power plants Bywatts maps in Oklahoma and 4th of the 23 operating Natural Gas plants in the state. It accounts for about 8.7% of Oklahoma's operating Natural Gas capacity and 4.9% of all operating capacity in the state. Nationally it is the 58th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2002, it is newer than 55% of the 72 operating Oklahoma plants with a recorded commissioning year.
EIA-860 lists 6 generators at the site with 1,214 MW of nameplate capacity, all natural gas fired combined cycle technology. Net generation was 5,647 GWh in 2024 (a 53% capacity factor), up 40% from 2022. Its generators came online between 2002 and 2003.
Grid neighborhood
The nearest named substation is ONETA (345 kV), about 0.4 miles away; the closest transmission line found within 10 miles is a 345 kV line owned by PUBLIC SERVICE CO OF OKLAHOMA, under 0.1 miles away. Another 4 operating power plants totaling 2,391 MW sit within 25 miles; the largest is RIVERSIDE (1,122 MW, Natural Gas). Within 50 miles are 2 mapped data centers; the nearest is 321 S Boston Ave in Tulsa, about 19.0 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
ONETA ENERGY CENTER is a 1,214 MW natural gas power plant in Wagoner County, OK, operated by CALPINE ONETA POWER LLC, commissioned in 2002. Wagoner County carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.6 of 5 at the 90th national percentile. Ice storm is the leading peril, rated Very High by FEMA at the 98th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Wagoner County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Ice storm | Very High | 98th | 4.9 of 5 | 1.3 |
| Hail | Relatively Moderate | 91st | 4.6 of 5 | 9.0 |
| Winter weather | Relatively Moderate | 82nd | 4.3 of 5 | 8.1 |
| Riverine flooding | Relatively Low | 78th | 4.1 of 5 | 2.0 |
| Wildfire | Relatively Low | 75th | 4.0 of 5 | <0.01 |
| Heat wave | Relatively Moderate | 68th | 3.7 of 5 | 25.7 |
| Lightning | Relatively Moderate | 56th | 3.2 of 5 | 55.7 |
| Earthquake | Very Low | 43rd | 2.7 of 5 | <0.01 |
| Tornado | Relatively Moderate | 42nd | 2.7 of 5 | 0.69 |
| Strong wind | Relatively Low | 42nd | 2.7 of 5 | 6.9 |
| Hurricane | Very Low | 12th | 1.5 of 5 | <0.01 |
Perils not assessed in Wagoner 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 Wagoner 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.