Mesquite Solar 1
Maricopa County, Arizona · EIA plant ID 57707 · Operator: RWE Clean Energy
Nameplate170MWSummer 170 MW
Generators12in service
Net generation392GWh12 mo to Dec 2025
Capacity factor26%solar units, summer MW
Heat rate—thermal plants only
First online2011
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) |
|---|---|---|---|
| 2011 | 3 | 12.6% | — |
| 2012 | 233.1 | 30.8% | — |
| 2013 | 413.6 | 27.8% | — |
| 2014 | 408.2 | 27.4% | — |
| 2015 | 397.6 | 26.7% | — |
| 2016 | 408.3 | 27.3% | — |
| 2017 | 413.7 | 27.8% | — |
| 2018 | 415 | 27.9% | — |
| 2019 | 407.3 | 27.4% | — |
| 2020 | 417 | 27.9% | — |
| 2021 | 405 | 27.2% | — |
| 2022 | 414.5 | 27.8% | — |
| 2023 | 403.9 | 27.1% | — |
| 2024 | 401.4 | 26.9% | — |
| 2025 | 392.2 | 26.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Solar Photovoltaic | PV | 16 | 16 | Nov 2011 | Operating | — | coming soon |
| 10 | Solar Photovoltaic | PV | 12 | 12 | Oct 2012 | Operating | — | coming soon |
| 11 | Solar Photovoltaic | PV | 16 | 16 | Oct 2012 | Operating | — | coming soon |
| 12 | Solar Photovoltaic | PV | 16 | 16 | Dec 2012 | Operating | — | coming soon |
| 2 | Solar Photovoltaic | PV | 16 | 16 | Jan 2012 | Operating | — | coming soon |
| 3 | Solar Photovoltaic | PV | 10 | 10 | Dec 2011 | Operating | — | coming soon |
| 4 | Solar Photovoltaic | PV | 16 | 16 | May 2012 | Operating | — | coming soon |
| 5 | Solar Photovoltaic | PV | 16 | 16 | Jun 2012 | Operating | — | coming soon |
| 6 | Solar Photovoltaic | PV | 8 | 8 | Aug 2012 | Operating | — | coming soon |
| 7 | Solar Photovoltaic | PV | 16 | 16 | Sep 2012 | Operating | — | coming soon |
| 8 | Solar Photovoltaic | PV | 12 | 12 | Oct 2012 | Operating | — | coming soon |
| 9 | Solar Photovoltaic | PV | 16 | 16 | Oct 2012 | Operating | — | coming soon |
Owner / operator
Operator: RWE Clean Energy. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| RWE Clean Energy | 100.0% | 170 MW |
Nearby plants
Within 80 km.
| Mesquite Solar 2, LLC | 100 MW | 1.2 km |
| Arlington Valley Energy Facility | 713 MW | 1.3 km |
| Mesquite Solar 4, LLC | 63 MW | 2.2 km |
| Mesquite Solar 5, LLC | 120 MW | 2.3 km |
| Mesquite Solar 3, LLC | 150 MW | 3.1 km |
| Arlington Valley Solar Energy I | 127 MW | 3.1 km |