Graham
Young County, Texas · EIA plant ID 3490 · Operator: Luminant Generation Company LLC
Nameplate635MWSummer 634 MW
Generators2in service
Net generation1,138GWh12 mo to Dec 2025
Capacity factor20%gas/coal/oil units, summer MW
Heat rate12,236Btu/kWhfossil units, electric fuel, HHV
First online1960Runs as peaking
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 | 1,308 | 23.2% | 9,844 |
| 2002 | 1,216.6 | 21.7% | 10,302 |
| 2003 | 762.7 | 13.6% | 10,743 |
| 2004 | 513.7 | 9.3% | 11,335 |
| 2005 | 453.8 | 8.2% | 11,534 |
| 2006 | 517.3 | 9.4% | 11,445 |
| 2007 | 793.1 | 14.4% | 11,492 |
| 2008 | 407 | 7.3% | 11,958 |
| 2009 | 521.8 | 9.4% | 12,095 |
| 2010 | 491.1 | 8.9% | 11,989 |
| 2011 | 304.7 | 5.7% | 11,856 |
| 2012 | 201.8 | 3.7% | 13,655 |
| 2013 | 169.4 | 3.1% | 12,672 |
| 2014 | 197.7 | 3.7% | 12,410 |
| 2015 | 193.6 | 3.5% | 11,515 |
| 2016 | 123.6 | 2.3% | 11,684 |
| 2017 | 70.7 | 1.3% | 12,162 |
| 2018 | 131.2 | 2.4% | 11,808 |
| 2019 | 277.8 | 5.1% | 11,663 |
| 2020 | 207.1 | 3.8% | 11,977 |
| 2021 | 279.3 | 5.1% | 11,981 |
| 2022 | 161.6 | 2.9% | 12,452 |
| 2023 | 1,150.1 | 20.9% | 11,303 |
| 2024 | 1,041.9 | 18.9% | 11,200 |
| 2025 | 1,138.5 | 20.5% | 12,236 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Steam Turbine | ST | 247.7 | 239 | Dec 1960 | Operating | — | coming soon |
| 2 | Natural Gas Steam Turbine | ST | 387 | 395 | Jun 1969 | Operating | — | coming soon |
Owner / operator
Operator: Luminant Generation Company LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Luminant Generation Company LLC | 100.0% | 635 MW |
Nearby plants
Within 80 km.
| Young Wind | 500 MW | 22.5 km |
| Senate Wind LLC | 150 MW | 24.3 km |
| Barton Chapel Wind Farm | 120 MW | 25.8 km |
| Hecate Energy Longhorn Solar LLC | 650 MW | 27.2 km |
| O'Bannion Energy Storage | — | 27.4 km |
| Olney | 20 MW | 28.2 km |