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767.1 MW Batteries (267 MW) + Solar Photovoltaic (500 MW) under construction in La Paz, AZ — Arizona Public Service Company
767.1 MW
Nameplate Capacity
6
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
—
Operating Since
Coordinates
33.5883, -113.5283
County
La Paz, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Copia Power | Copia Power | — |
| Owner(s) | Copia Power | Copia Power | — |
| Status | Under construction | construction | — |
GEM identifies the owner as Copia Power
This entity is not yet in the GEM ownership database — chain unavailable.
Centennial Flats is a hybrid power plant located in La Paz County, Arizona. The facility has a total capacity of 767.1 MW and is operated by Copia Power. It ranks as the 6th largest power plant in Arizona out of 47, and 28th nationally out of 514. The plant utilizes both solar photovoltaic and battery storage technologies, with six generators in total. The primary fuel type is listed as MWH, reflecting the energy storage component. The solar array uses a fixed tilt tracking system.
Centennial Flats operates within the Arizona Public Service Company balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region. The plant has been the subject of 8 news articles, with a focus on deals (6 articles), industry trends (1 article), and regulatory matters (1 article).
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
No generation data available for this plant.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $1.0B
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-26
View all articlesArizona Public Service Company (AZPS)
Grid Voltage
500.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP