Roosevelt
Maricopa County, Arizona · EIA plant ID 149 · Operator: Salt River Project
Nameplate36MWSummer 34 MW
Generators1in service
Net generation76GWh12 mo to Dec 2025
Capacity factor26%hydro units, summer MW
Heat rate—thermal plants only
First online1973
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 | 53.1 | 16.8% | — |
| 2002 | 20.8 | 6.6% | — |
| 2003 | 18.1 | 5.7% | — |
| 2004 | 33.2 | 10.5% | — |
| 2005 | 82.7 | 26.2% | — |
| 2006 | 93.9 | 29.8% | — |
| 2007 | 92.5 | 29.3% | — |
| 2008 | 71.9 | 22.7% | — |
| 2009 | 138.2 | 43.8% | — |
| 2010 | 129.5 | 41.1% | — |
| 2011 | 105.6 | 33.5% | — |
| 2012 | 93.8 | 29.7% | — |
| 2013 | 45.3 | 14.4% | — |
| 2014 | 37.9 | 12.0% | — |
| 2015 | 42.7 | 13.5% | — |
| 2016 | 58.9 | 18.6% | — |
| 2017 | 50.4 | 16.0% | — |
| 2018 | 58.3 | 18.5% | — |
| 2019 | 45.4 | 14.4% | — |
| 2020 | 63.4 | 20.0% | — |
| 2021 | 64.2 | 20.3% | — |
| 2022 | 73.4 | 24.1% | — |
| 2023 | 98.8 | 31.3% | — |
| 2024 | 101.8 | 34.1% | — |
| 2025 | 76 | 25.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| ROOS | Conventional Hydroelectric | HY | 36 | 34 | Mar 1973 | Operating | — | coming soon |
Owner / operator
Operator: Salt River Project. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Salt River Project | 100.0% | 36 MW |
Nearby plants
Within 80 km.
| Horse Mesa | 131 MW | 19.1 km |
| Mormon Flat | 64 MW | 29.1 km |
| Stewart Mountain | 13 MW | 36.6 km |
| Pediment BESS I | 250 MW | 53.8 km |
| Mesa Carport PV | 5 MW | 54.4 km |
| Box Canyon (AZ) | 300 MW | 59.9 km |