Hays Energy Project
Hays County, Texas · EIA plant ID 55144 · Operator: Hays Energy, LLC
Nameplate989MWSummer 931 MW
Generators4in service
Net generation5,606GWh12 mo to Aug 2026
Capacity factor69%gas/coal/oil units, summer MW
Heat rate7,713Btu/kWhfossil units, electric fuel, HHV
First online2002Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 522.6 | — | 8,988 |
| 2002 | 1,931.6 | 44.7% | 10,039 |
| 2003 | 2,566.3 | 33.4% | 7,418 |
| 2004 | 2.1 | 0.0% | 11,687 |
| 2005 | 3,515.1 | 45.8% | 7,322 |
| 2006 | 4,300 | 56.0% | 7,293 |
| 2007 | 3,693.9 | 47.9% | 7,344 |
| 2008 | 5,206.7 | 67.3% | 7,278 |
| 2009 | 3,845.9 | 49.8% | 7,301 |
| 2010 | 2,930.3 | 38.0% | 7,392 |
| 2011 | 3,067.7 | 39.8% | 7,348 |
| 2012 | 1,887 | 24.4% | 7,636 |
| 2013 | 2,634 | 34.1% | 7,421 |
| 2014 | 2,399.1 | 31.1% | 7,496 |
| 2015 | 4,543.7 | 58.9% | 7,476 |
| 2016 | 3,964.1 | 51.2% | 7,513 |
| 2017 | 2,715.2 | 35.2% | 7,575 |
| 2018 | 3,060.2 | 41.4% | 7,701 |
| 2019 | 3,119.3 | 42.2% | 7,691 |
| 2020 | 2,389.9 | 29.8% | 7,787 |
| 2021 | 2,777.2 | 33.7% | 7,780 |
| 2022 | 3,479 | 46.1% | 7,670 |
| 2023 | 4,691.7 | 58.5% | 7,649 |
| 2024 | 5,417.2 | 67.3% | 7,601 |
| 2025 | 5,338.4 | 65.5% | 7,731 |
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 |
|---|---|---|---|---|---|---|---|---|
| U1 | Natural Gas Fired Combined Cycle | CS | 241.7 | 234 | May 2002 | Operating | — | coming soon |
| U2 | Natural Gas Fired Combined Cycle | CS | 241.7 | 232 | Apr 2002 | Operating | — | coming soon |
| U3 | Natural Gas Fired Combined Cycle | CS | 252.8 | 231 | Aug 2002 | Operating | — | coming soon |
| U4 | Natural Gas Fired Combined Cycle | CS | 252.8 | 234 | Aug 2002 | Operating | — | coming soon |
Owner / operator
Operator: Hays Energy, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Hays Energy, LLC | 100.0% | 989 MW |
Nearby plants
Within 80 km.
| Mesquite Creek LFGTE Project | 3 MW | 5.8 km |
| Dunlap TP 1 | 4 MW | 16.5 km |
| Timmerman Power Plant | 368 MW | 20.5 km |
| Rio Nogales Power Project | 1,108 MW | 20.9 km |
| Niagara Bottling - Seguin | 5 MW | 21.3 km |
| Abbott TP 3 | 3 MW | 21.3 km |