Gila River Power Block 2
Maricopa County, Arizona · EIA plant ID 60768 · Operator: Salt River Project
Nameplate619MWSummer 570 MW
Generators3in service
Net generation2,381GWh12 mo to Aug 2026
Capacity factor48%gas/coal/oil units, summer MW
Heat rate7,420Btu/kWhfossil units, electric fuel, HHV
First online2003Runs 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) |
|---|---|---|---|
| 2016 | 119.9 | 2.6% | 6,562 |
| 2017 | 23.8 | 0.5% | 7,912 |
| 2018 | 2,248 | 49.8% | 7,518 |
| 2019 | 2,840 | 62.9% | 7,562 |
| 2020 | 2,712.3 | 60.0% | 7,399 |
| 2021 | 3,130.2 | 69.4% | 7,126 |
| 2022 | 2,623.5 | 52.5% | 7,278 |
| 2023 | 2,813.8 | 56.4% | 7,326 |
| 2024 | 3,241.1 | 64.7% | 7,315 |
| 2025 | 2,890.3 | 57.9% | 7,427 |
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 |
|---|---|---|---|---|---|---|---|---|
| CTG3 | Natural Gas Fired Combined Cycle | CT | 174 | 164 | Jun 2003 | Operating | — | coming soon |
| CTG4 | Natural Gas Fired Combined Cycle | CT | 174 | 164 | Jun 2003 | Operating | — | coming soon |
| ST10 | Natural Gas Fired Combined Cycle | CA | 271 | 242 | Jul 2003 | 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).
| Tucson Electric Power Co | 100.0% | 619 MW |
Nearby plants
Within 80 km.
| Gila River Power Block 1 | 619 MW | 0 km |
| Gila River Power Block 3 | 619 MW | 0 km |
| Gila River Power Station | 619 MW | 0 km |
| Paloma Solar Hybrid | 34 MW | 6 km |
| RE Gillespie 1 LLC | 15 MW | 6.3 km |
| Cotton Center Solar Hybrid | 34 MW | 7.3 km |