Centennial Flats
Centennial Flats is a 511 MW solar farm in La Paz County, Arizona, operated by Copia Power. EIA-860M lists 4 generating units here. Its units entered service in 2026.
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
- 511.4 MW
- 511.4 MW net summer
- Generating units
- 4
- In service
- 2026
- EIA plant ID
- 68466
Where it is
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- County
- La Paz County, Arizona
- Coordinates
- 33.5883, -113.5283
- Balancing authority
- AZPS
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Copia Power
- Primary energy source
- Solar
- Technologies
- Batteries, Solar Photovoltaic
- Status
- Operating
This site runs on more than one energy source. EIA-860M capacity splits: Solar 333 MW, Battery 178 MW. It is filed here under Solar, the source with the most capacity.
Centennial Flats: FAQ
- Where is Centennial Flats?
- In La Paz 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 Centennial Flats?
- 511 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
- Who owns Centennial Flats?
- EIA-860M names Copia Power 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 Centennial Flats LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Copia Power 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 "Centennial Flats LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Centennial Flats still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.