Sand Bar Power Plant
Tuolumne County, California · EIA plant ID 50400 · Operator: Tri-Dam Power Authority
Nameplate16MWSummer 16 MW
Generators1in service
Net generation83GWh12 mo to Dec 2025
Capacity factor60%hydro units, summer MW
Heat rate—thermal plants only
First online1986
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 | 40 | 29.6% | — |
| 2002 | 77.7 | 57.6% | — |
| 2003 | 18.2 | 13.5% | — |
| 2004 | 88.5 | 67.2% | — |
| 2005 | 94.8 | 72.1% | — |
| 2006 | 117.2 | 89.2% | — |
| 2007 | 57.5 | 43.7% | — |
| 2008 | 54.1 | 41.1% | — |
| 2009 | 149.4 | 113.7% | — |
| 2010 | 78.6 | 59.8% | — |
| 2011 | 120.7 | 91.8% | — |
| 2012 | 55.8 | 42.3% | — |
| 2013 | 54.7 | 41.7% | — |
| 2014 | 21.7 | 16.5% | — |
| 2015 | 30.3 | 23.1% | — |
| 2016 | 95 | 69.3% | — |
| 2017 | 126.1 | 92.3% | — |
| 2018 | 73.9 | 54.1% | — |
| 2019 | 107.6 | 78.7% | — |
| 2020 | 44.4 | 32.4% | — |
| 2021 | 33.8 | 24.7% | — |
| 2022 | 69.8 | 51.1% | — |
| 2023 | 124.3 | 91.0% | — |
| 2024 | 85.5 | 62.4% | — |
| 2025 | 82.5 | 60.4% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | HY | 16.2 | 15.6 | May 1986 | Operating | — | coming soon |
Owner / operator
Operator: Tri-Dam Power Authority. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Tri-Dam Power Authority | 100.0% | 16 MW |
Nearby plants
Within 80 km.
| Spring Gap | 6 MW | 3.3 km |
| Beardsley | 10 MW | 6.6 km |
| Donnells | 72 MW | 12.2 km |
| Stanislaus | 82 MW | 20 km |
| Collierville Powerhouse | 253 MW | 20.7 km |
| Phoenix | 2 MW | 23.1 km |