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210 MW Batteries (88 MW) + Solar Photovoltaic (122 MW) operating in Pinal, AZ — Salt River Project
210 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2023
Operating Since
Coordinates
32.8882, -111.4978
County
Pinal, AZ
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Storey Energy Center, LLC | NextEra Energy Inc | — |
| Owner(s) | Storey Energy Center, LLC | NextEra Energy | — |
| Status | Operating | operating | — |
Storey Solar and Storage is a hybrid power plant located in Pinal County, Arizona. The facility, owned by NextEra Energy and operated by Storey Energy Center, LLC, began operations in 2023. It has a total capacity of 210 MW and consists of two generators utilizing both solar photovoltaic technology and battery energy storage. The battery energy storage system (BESS) has a capacity of 264 MWh, providing 3 hours of duration and employing lithium-ion battery chemistry (LIB). The solar array uses single-axis tracking.
The plant's primary fuel source is listed as MWH. In its latest year of operation, Storey Solar and Storage generated 300,787 MWh, achieving a capacity factor of 16.4%. The plant operates within the Salt River Project balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Storey Solar and Storage is ranked as the 31st largest power plant in Arizona out of 47, and 251st nationally out of 514. Financial data indicates a power purchase agreement (PPA) price of $18.31 per MWh.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
16.4K MWh
Latest Month
300.8K MWh
Annual Generation
16.4%
Capacity Factor
Storey Energy Center, LLC · Data from 2023–2025
$14.4/MWh
PPA Price
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 5 articlesSalt River Project (SRP)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Top 10 solar states
Data tables and metrics from the powerplantsinfo.org database.