Thomas C Ferguson
Llano County, Texas · EIA plant ID 4937 · Operator: Lower Colorado River Authority
Nameplate575MWSummer 516 MW
Generators3in service
Net generation3,731GWh12 mo to Aug 2026
Capacity factor83%gas/coal/oil units, summer MW
Heat rate6,620Btu/kWhfossil units, electric fuel, HHV
First online2014Runs 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 | 929.1 | — | — |
| 2002 | 701.8 | — | — |
| 2003 | 921.3 | 25.0% | 10,753 |
| 2004 | 591.4 | 16.0% | 10,911 |
| 2005 | 708.6 | 19.3% | 11,679 |
| 2006 | 860.8 | 23.4% | 11,444 |
| 2007 | 783.6 | 21.3% | 11,256 |
| 2008 | 741.7 | 20.1% | 11,239 |
| 2009 | 923.3 | 25.1% | 11,061 |
| 2010 | 681.7 | 18.5% | 11,611 |
| 2011 | 357.5 | 9.7% | 12,594 |
| 2012 | 257.2 | 8.4% | 12,043 |
| 2013 | 138.9 | 6.8% | 11,791 |
| 2015 | 3,401.2 | 75.3% | 6,649 |
| 2016 | 3,744 | 82.6% | 6,627 |
| 2017 | 3,604.9 | 79.8% | 6,941 |
| 2018 | 3,086.1 | 68.3% | 6,698 |
| 2019 | 3,217.7 | 71.2% | 6,784 |
| 2020 | 3,584.2 | 79.1% | 6,752 |
| 2021 | 3,345.3 | 74.0% | 6,778 |
| 2022 | 3,144 | 69.5% | 6,770 |
| 2023 | 3,774.3 | 83.5% | 6,703 |
| 2024 | 3,612.5 | 79.7% | 6,757 |
| 2025 | 3,630.1 | 80.3% | 6,670 |
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 |
|---|---|---|---|---|---|---|---|---|
| CT-1 | Natural Gas Fired Combined Cycle | CT | 185.3 | 168 | Aug 2014 | Operating | — | coming soon |
| CT-2 | Natural Gas Fired Combined Cycle | CT | 185.3 | 168 | Aug 2014 | Operating | — | coming soon |
| STG | Natural Gas Fired Combined Cycle | CA | 204 | 180 | Aug 2014 | Operating | — | coming soon |
| 1 | Natural Gas Steam Turbine | ST | 446 | 350 | Aug 1974 | Retired Sep 2013 | — | coming soon |
Owner / operator
Operator: Lower Colorado River Authority. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Lower Colorado River Authority | 96.5% | 554 MW |
| City of San Marcos - (TX) | 3.5% | 20 MW |
Nearby plants
Within 80 km.
| Granite Shoals | 54 MW | 3.1 km |
| Marble Falls | 40 MW | 10.8 km |
| Backbone Creek BESS | — | 10.9 km |
| Inks | 15 MW | 19.4 km |
| Buchanan Dam (TX) | 55 MW | 21.9 km |
| Johnson City BESS | 2 MW | 28.8 km |