Centennial Flats — Plant Summary
- EIA Plant ID
- 68466
- Capacity
- 767.1 MW
- Primary Fuel
- Solar
- Technology
- Batteries, Solar Photovoltaic
- Status
- Under construction
- Location
- La Paz, AZ
- Operating Since
- —
- Generators
- 6
- Operator
- Copia Power
- Parent Company
- —
- Balancing Authority
- Arizona Public Service Company
- ISO/RTO
- —
- NERC Region
- WECC
Centennial Flats
Under constructionBESSSolarHybridGEM: construction
Ranked #1 of 104 Solar plants in AZ#10 of 7447 nationally
767.1 MW Batteries (267 MW) + Solar Photovoltaic (500 MW) under construction in La Paz, AZ — Arizona Public Service Company
EIAGEM
767.1 MW
Nameplate Capacity
6
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
—
Operating Since
Location
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Copia Power | Copia Power | — |
| Owner(s) | Copia Power | Copia Power | — |
| Status | Under construction | construction | — |
Ownership Chain
GEM identifies the owner as Copia Power
This entity is not yet in the GEM ownership database — chain unavailable.
About
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
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Arizona Public Service Company
Grid Voltage
500 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
No generation data available for this plant.
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (8)Beta
Industry·corporate
ENR Mountain States & Southwest Previews List of 2025 Top Starts
ENR Mountain States & Southwest will name some of the top 2025 construction starts in the region in our April 27 print issue,...
ENR·3 days ago
Deals·tax equity
Copia Power, a Carlyle Portfolio Company, Closes an $890 Million Tax Equity Commitment for Maricopa Energy Center
Copia Power closes a tax equity commitment for Arizona's largest solar-plus-storage project.
Copia Power (developer)Carlyle (other)
www.newswire.com·3 months ago
Deals·tax equity
Copia Power, a Carlyle Portfolio Company, Closes $595 Million Tax Equity Commitment for Centennial Flats
Copia Power closes tax equity for Arizona solar and storage project. DANA POINT, CA AND WASHINGTON, DC / ACCESS Newswire / December 17,...
Copia Power (developer)Carlyle (other)
ACCESS Newswire·3 months ago
Deals·debt financing
Copia Power closes on US$1.71 billion debt facility for 2,200MWh Arizona energy centre
Company-owned developer Copia Power has closed a US$1.71 billion debt facility to fund construction of its Maricopa Energy Centre Projects.
Copia Power (developer)
Energy-Storage.News·1 years ago
Last updated 2026-03-14
View all 8 articles