Mesquite Solar 4, LLC
Maricopa County, Arizona · EIA plant ID 65962 · Operator: RWE Clean Energy
Nameplate63MWSummer 63 MW
Generators2in service
Net generation134GWh12 mo to Aug 2026
Capacity factor30%solar units, summer MW
Heat rate—thermal plants only
First online2024
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) |
|---|---|---|---|
| 2024 | 146.8 | 31.9% | — |
| 2025 | 144.4 | 31.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| MS4 | Solar Photovoltaic | PV | 52.5 | 52.5 | Jan 2024 | Operating | — | coming soon |
| MS4B | Batteries | BA | 10 | 10 | Jan 2024 | 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% | 63 MW |
Nearby plants
Within 80 km.
| Mesquite Solar 5, LLC | 120 MW | 0.2 km |
| Mesquite Solar 2, LLC | 100 MW | 1 km |
| Mesquite Solar 1 | 170 MW | 2.2 km |
| Mesquite Solar 3, LLC | 150 MW | 2.9 km |
| Arlington Valley Energy Facility | 713 MW | 3.2 km |
| Arlington Valley Solar Energy I | 127 MW | 3.6 km |