Mesquite Solar 1
Mesquite Solar 1 is a 170 MW solar farm in Maricopa County, Arizona, operated by RWE Clean Energy. EIA-860M lists 12 generating units here, inside CAISO. Its units entered service between 2011 and 2012.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 170 MW
- 170 MW net summer
- Generating units
- 12
- In service
- 2011–2012
- EIA plant ID
- 57707
Where it is
Loading map…
- County
- Maricopa County, Arizona
- Coordinates
- 33.3418, -112.904
- Balancing authority
- CISO
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- RWE Clean Energy
- Primary energy source
- Solar
- Technologies
- Solar Photovoltaic
- Status
- Operating
Mesquite Solar 1: FAQ
- Where is Mesquite Solar 1?
- In Maricopa County, Arizona (AZ). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Mesquite Solar 1?
- 170 MW of nameplate capacity across 12 units, as of the EIA-860M release for 2026-07.
- Who owns Mesquite Solar 1?
- EIA-860M names RWE Clean Energy as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Mesquite Solar 1 LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — RWE Clean Energy here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Mesquite Solar 1 LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Mesquite Solar 1 still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.