Solana Generating Station
Maricopa County, Arizona · EIA plant ID 56812 · Operator: Arizona Solar One LLC
Nameplate280MWSummer 296 MW
Generators2in service
Net generation808GWh12 mo to Aug 2026
Capacity factor31%solar units, summer MW
Heat rate—thermal plants only
First online2013
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) |
|---|---|---|---|
| 2013 | 89.2 | 13.7% | — |
| 2014 | 603.6 | 23.3% | — |
| 2015 | 718.8 | 27.8% | — |
| 2016 | 643.7 | 24.8% | — |
| 2017 | 724 | 28.0% | — |
| 2018 | 776 | 30.0% | — |
| 2019 | 791.6 | 30.6% | — |
| 2020 | 775.7 | 29.9% | — |
| 2021 | 694.6 | 26.8% | — |
| 2022 | 695.6 | 26.9% | — |
| 2023 | 774.7 | 29.9% | — |
| 2024 | 828.2 | 31.9% | — |
| 2025 | 845.9 | 32.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN 1 | Solar Thermal with Energy Storage | CP | 140 | 147.8 | Oct 2013 | Operating | — | coming soon |
| GEN2 | Solar Thermal with Energy Storage | CP | 140 | 147.8 | Oct 2013 | Operating | — | coming soon |
Owner / operator
Operator: Arizona Solar One LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Arizona Solar One LLC | 100.0% | 280 MW |
Nearby plants
Within 80 km.
| Gila Bend Hybrid | 68 MW | 7.3 km |
| Gila River Power Block 1 | 619 MW | 25.1 km |
| Gila River Power Block 2 | 619 MW | 25.1 km |
| Gila River Power Block 3 | 619 MW | 25.1 km |
| Gila River Power Station | 619 MW | 25.1 km |
| RE Gillespie 1 LLC | 15 MW | 29.4 km |