Johnson County
Johnson County, Texas · EIA plant ID 54817 · Operator: Johnson County Power LLC
Nameplate283MWSummer 278 MW
Generators2in service
Net generation1,266GWh12 mo to Dec 2025
Capacity factor52%gas/coal/oil units, summer MW
Heat rate8,192Btu/kWhfossil units, electric fuel, HHV
First online1996Runs as baseload
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 1,644.7 | — | — |
| 2002 | 1,386.2 | — | — |
| 2003 | 1,637.4 | 70.0% | 7,762 |
| 2004 | 1,723 | 73.5% | 8,123 |
| 2005 | 529.5 | 22.6% | 8,033 |
| 2006 | 461.1 | 19.7% | 8,189 |
| 2007 | 1,291.1 | 55.2% | 7,760 |
| 2008 | 1,420.8 | 60.6% | 7,848 |
| 2009 | 1,208.6 | 51.7% | 7,855 |
| 2010 | 1,404 | 60.0% | 7,871 |
| 2011 | 1,216.7 | 52.0% | 7,920 |
| 2012 | 880.4 | 37.5% | 8,037 |
| 2013 | 772.9 | 33.1% | 8,089 |
| 2014 | 732.5 | 31.3% | 8,035 |
| 2015 | 602.4 | 25.8% | 8,114 |
| 2016 | 424 | 18.1% | 8,194 |
| 2017 | 382.5 | 16.4% | 8,397 |
| 2018 | 447.9 | 19.1% | 8,177 |
| 2019 | 790.6 | 33.8% | 8,153 |
| 2020 | 899.9 | 38.4% | 8,062 |
| 2021 | 764.2 | 32.7% | 8,067 |
| 2022 | 1,081.4 | 46.2% | 7,958 |
| 2023 | 1,105.6 | 47.3% | 7,982 |
| 2024 | 1,316.5 | 56.1% | 7,578 |
| 2025 | 1,266.4 | 52.0% | 8,192 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo18,194 MMBtu
Last month with liquid burnNov 2025
Switch while operatingYes
Net summer MW on gas173
Net summer MW on oil173
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GT-1 | Natural Gas Fired Combined Cycle | CT | 178.2 | 174 | Sep 1996 | Operating | — | coming soon |
| ST-1 | Natural Gas Fired Combined Cycle | CA | 104.4 | 104 | Nov 1996 | Operating | — | coming soon |
Owner / operator
Operator: Johnson County Power LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Johnson County Power LLC | 100.0% | 283 MW |
Nearby plants
Within 80 km.
| WAL3631 | 1 MW | 20.8 km |
| Yellow Viking Solar | — | 22.7 km |
| Gigawatt Solar | — | 24.3 km |
| DeCordova Steam Electric Station | 627 MW | 27.5 km |
| Apache Hill Energy Center | — | 30.1 km |
| Arlington Outlet Hydroelectric Generator | retired | 30.8 km |