Ennis Power Company LLC
Ellis County, Texas · EIA plant ID 55223 · Operator: Ennis Power Company LLC
Nameplate418MWSummer 360 MW
Generators2in service
Net generation1,584GWh12 mo to Dec 2025
Capacity factor50%gas/coal/oil units, summer MW
Heat rate7,252Btu/kWhfossil units, electric fuel, HHV
First online2002Runs 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 | 56.5 | — | — |
| 2002 | 1,008.6 | — | — |
| 2003 | 1,125.5 | 35.7% | 7,112 |
| 2004 | 1,706.3 | 54.0% | 7,133 |
| 2005 | 1,392.7 | 44.2% | 7,146 |
| 2006 | 1,381.2 | 43.9% | 7,467 |
| 2007 | 1,634.1 | 51.9% | 7,291 |
| 2008 | 1,504.8 | 47.6% | 7,439 |
| 2009 | 1,392.6 | 44.2% | 7,412 |
| 2010 | 1,530.5 | 48.6% | 7,360 |
| 2011 | 2,059.8 | 65.4% | 6,994 |
| 2012 | 2,022.2 | 64.0% | 7,056 |
| 2013 | 2,006.4 | 63.7% | 7,176 |
| 2014 | 1,792.4 | 56.9% | 7,152 |
| 2015 | 1,594.3 | 50.6% | 7,385 |
| 2016 | 1,272.7 | 40.3% | 7,447 |
| 2017 | 867.6 | 27.6% | 7,982 |
| 2018 | 1,641.2 | 52.1% | 6,990 |
| 2019 | 1,505 | 47.8% | 7,201 |
| 2020 | 837.4 | 26.5% | 7,462 |
| 2021 | 984 | 31.3% | 7,476 |
| 2022 | 1,412.9 | 44.9% | 7,110 |
| 2023 | 1,440.2 | 45.7% | 7,124 |
| 2024 | 1,656.3 | 52.4% | 7,120 |
| 2025 | 1,583.7 | 50.3% | 7,252 |
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 |
|---|---|---|---|---|---|---|---|---|
| GT1 | Natural Gas Fired Combined Cycle | CT | 285 | 245.1 | May 2002 | Operating | — | coming soon |
| ST1 | Natural Gas Fired Combined Cycle | CA | 133 | 114.4 | May 2002 | Operating | — | coming soon |
Owner / operator
Operator: Ennis Power Company LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Ennis Power Company LLC | 100.0% | 418 MW |
Nearby plants
Within 80 km.
| Elm Branch Solar 1 | 135 MW | 10.2 km |
| Dolomite Storage | — | 16.2 km |
| Oystercatcher Solar | — | 26.9 km |
| Wensowitch Solar Park | — | 28.6 km |
| Anole Energy Storage | 240 MW | 28.8 km |
| Briar Creek Solar 1 | 127 MW | 29.3 km |