Desert Star Hybrid — Plant Summary
- EIA Plant ID
- 59444
- Capacity
- 20 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries, Solar Photovoltaic
- Status
- Operating
- Location
- Maricopa, AZ
- Operating Since
- 2015
- Generators
- 2
- Operator
- Arizona Public Service Co
- Parent Company
- Pinnacle West Capital
- Annual Generation
- 29,163 MWh
- Capacity Factor
- 16.6%
- Balancing Authority
- Arizona Public Service Company
- ISO/RTO
- —
- NERC Region
- WECC
Desert Star Hybrid
OperatingBESSSolarHybrid
Ranked #52 of 55 BESS plants in AZ#482 of 837 nationally
20 MW Batteries (10 MW) + Solar Photovoltaic (10 MW) operating in Maricopa, AZ — Arizona Public Service Company
EIAGEMWD
20 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2015
Operating Since
Location
Coordinates
33.1450, -112.6600
County
Maricopa, AZ
Nearby Plants
- RE Gillespie 1 LLCSolar15 MW · 3.8 km
- Stratford Solar Center, LLCSolar15 MW · 12.2 km
- Cotton Center Solar HybridBESS34 MW · 12.3 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Arizona Public Service Co | Arizona Public Service | — |
| Owner(s) | Arizona Public Service Co | Pinnacle West Capital | — |
| Status | Operating | operating | — |
Ownership Chain
About
Desert Star Hybrid is a 20 MW hybrid power plant located in Maricopa County, Arizona. The facility, which began operating in 2015, is owned by Pinnacle West Capital and operated by Arizona Public Service Company (APS). The plant utilizes both solar photovoltaic technology with single-axis tracking and battery energy storage. The battery energy storage system (BESS) has a capacity of 30 MWh, providing a duration of 3 hours and employing lithium-ion battery (LIB) chemistry. The plant's primary fuel type is listed as "MWH."
Desert Star Hybrid operates within the Arizona Public Service Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In the most recent year of data, the plant generated 29,163 MWh, achieving a capacity factor of 16.6%. The installed cost of the plant was $3,259.75 per kW, according to FERC data. Desert Star Hybrid ranks as the 65th largest power plant out of 68 in Arizona, and 699th out of 1205 nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Arizona Public Service Company
Grid Voltage
12 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
1.6K MWh
Net Discharge
29.2K MWh
Annual Net Energy
16.6%
Capacity Factor
Jan 2022 – Dec 2024
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Financial DataBeta
Source: FERC Form 1HIGH
$3,573/kW
Installed Cost
Arizona Public Service Company
Reporting Utility
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (3)Beta
Regulatory·permitting
APS seeks license extension for Palo Verde Nuclear Plant
Arizona Public Service (APS) plans to renew operating licenses for all three units at Palo Verde Generating Station, extending operations to the mid-2060s, ensuring continued energy supply.
APS (operator)
Power Engineering·1 weeks ago
General
DOE nixes $1.8B loan to Arizona Public Service for transmission, renewables and storage
Additional de-obligations are in process but cannot be publicly disclosed until finalized,” said Olivia Tinari, deputy press secretary for...
Utility Dive·4 weeks ago
Industry·technology
Top 10 largest solar photovoltaic plants in the world
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