Red Rock
Maricopa County, Arizona · EIA plant ID 60467 · Operator: Arizona Public Service Co
Nameplate85MWSummer 85 MW
Generators2in service
Net generation91GWh12 mo to Aug 2026
Capacity factor25%solar units, summer MW
Heat rate—thermal plants only
First online2017
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), solar 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) |
|---|---|---|---|
| 2017 | 114.7 | 35.8% | — |
| 2018 | 120 | 34.3% | — |
| 2019 | 116.2 | 33.1% | — |
| 2020 | 115.6 | 32.9% | — |
| 2021 | 118.4 | 33.8% | — |
| 2022 | 105.3 | 30.1% | — |
| 2023 | 26 | 7.4% | — |
| 2024 | 91.3 | 23.8% | — |
| 2025 | 85.9 | 23.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| PV1 | Solar Photovoltaic | PV | 43.9 | 43.9 | Feb 2017 | Operating | — | coming soon |
| RR40M | Batteries | BA | 41 | 41 | Nov 2023 | Operating | — | coming soon |
Owner / operator
Operator: Arizona Public Service Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Arizona Public Service Co | 100.0% | 85 MW |
Nearby plants
Within 80 km.
| Saguaro | 185 MW | 1 km |
| Serrano | 384 MW | 5.6 km |
| Avra Valley Solar | 25 MW | 20 km |
| Picture Rocks Solar, LLC | 20 MW | 20.6 km |
| North Loop | 108 MW | 22.6 km |
| Kitt Solar | — | 33.1 km |