Marble Falls
Burnet County, Texas · EIA plant ID 3599 · Operator: Lower Colorado River Authority
Nameplate40MWSummer 40 MW
Generators2in service
Net generation24GWh12 mo to Dec 2025
Capacity factor7%hydro units, summer MW
Heat rate—thermal plants only
First online1951
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), hydro 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 24.7 | 7.8% | — |
| 2002 | 22.8 | 7.1% | — |
| 2003 | 21.5 | 6.8% | — |
| 2004 | 37.3 | 11.7% | — |
| 2005 | 37.6 | 11.8% | — |
| 2006 | 16.7 | 4.8% | — |
| 2007 | 37.8 | 11.8% | — |
| 2008 | 16.9 | 5.3% | — |
| 2009 | 23.6 | 6.4% | — |
| 2010 | 20.2 | 5.6% | — |
| 2011 | 15.7 | 4.3% | — |
| 2012 | 8.9 | 2.4% | — |
| 2013 | 9 | 2.5% | — |
| 2014 | 6.1 | 1.7% | — |
| 2015 | 13.8 | 4.0% | — |
| 2016 | 35 | 10.1% | — |
| 2017 | 14.3 | 4.1% | — |
| 2018 | 16.6 | 4.8% | — |
| 2019 | 21.2 | 6.1% | — |
| 2020 | 13.7 | 3.9% | — |
| 2021 | 11.3 | 3.3% | — |
| 2022 | 10.1 | 2.9% | — |
| 2023 | 10.2 | 2.9% | — |
| 2024 | 15.2 | 4.4% | — |
| 2025 | 23.8 | 6.9% | — |
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 | Conventional Hydroelectric | HY | 19.8 | 19.8 | Oct 1951 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 19.8 | 19.8 | Sep 1951 | Operating | — | 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 | 100.0% | 40 MW |
Nearby plants
Within 80 km.
| Backbone Creek BESS | — | 0.6 km |
| Granite Shoals | 54 MW | 7.7 km |
| Thomas C Ferguson | 575 MW | 10.8 km |
| Inks | 15 MW | 23.1 km |
| RedSun PV and BESS | — | 26.1 km |
| Buchanan Dam (TX) | 55 MW | 26.6 km |