TWIN OAKS POWER ONE
OperatingCoal power plant
- Capacity
- 349 MW
- Primary fuel
- Coal
- County
- Robertson County
- Operator
- OPTIM ENERGY LLC
- Status
- Operating
- Commissioned
- 1990
- EIA plant ID
- 7030
- Generators
- 2
- Technology
- Conventional Steam Coal
- Net generation (2024)
- 2,061 GWh
- Capacity factor (2024, EIA nameplate)
- 67%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 31.0924, -96.6954
TWIN OAKS POWER ONE, a 349 MW Coal power plant in Robertson County, Texas. Operated by OPTIM ENERGY LLC, commissioned 1990.
How TWIN OAKS POWER ONE compares
With 349 MW of capacity, TWIN OAKS POWER ONE ranks 93rd among the 307 operating power plants Bywatts maps in Texas and is the smallest of the 12 operating Coal plants in the state. It accounts for about 1.9% of Texas's operating Coal capacity and 0.3% of all operating capacity in the state. Nationally it is the 184th-largest of the 324 operating Coal plants in the database. Commissioned in 1990, it is older than 62% of the 303 operating Texas plants with a recorded commissioning year. Its operator, OPTIM ENERGY LLC, runs 2 operating plants in Texas totaling 993 MW. It shares Robertson County with one other operating plant, OAK GROVE.
EIA-860 lists 2 generators at the site with 349 MW of nameplate capacity, all conventional steam coal technology. Net generation was 2,061 GWh in 2024 (a 67% capacity factor), down 16% from 2022. Its generators came online between 1990 and 1991.
Grid neighborhood
The closest transmission line found within 10 miles is a 345 kV line owned by ONCOR ELECTRIC DELIVERY CO., under 0.1 miles away. One other operating power plant sits within 25 miles: OAK GROVE (1,795 MW, Coal).
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
TWIN OAKS POWER ONE is a 349 MW coal power plant in Robertson County, TX, operated by OPTIM ENERGY LLC, commissioned in 1990. Robertson County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.1 of 5 at the 54th national percentile. Hurricane is the leading peril, rated Relatively Low by FEMA at the 68th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Robertson County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Low | 68th | 3.7 of 5 | 0.06 |
| Hail | Relatively Low | 62nd | 3.5 of 5 | 2.9 |
| Winter weather | Very Low | 58th | 3.3 of 5 | 2.6 |
| Tornado | Relatively Low | 53rd | 3.1 of 5 | 0.46 |
| Heat wave | Relatively Low | 52nd | 3.1 of 5 | 15.2 |
| Wildfire | Very Low | 48th | 2.9 of 5 | <0.01 |
| Strong wind | Relatively Low | 36th | 2.4 of 5 | 1.7 |
| Riverine flooding | Relatively Low | 26th | 2.0 of 5 | 0.82 |
| Ice storm | Relatively Low | 23rd | 1.9 of 5 | 0.87 |
| Earthquake | Very Low | 16th | 1.6 of 5 | <0.01 |
| Lightning | Relatively Low | 16th | 1.6 of 5 | 55.3 |
Perils not assessed in Robertson 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 Robertson 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.