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10 MW BESS out of service in Maricopa, AZ — Salt River Project
10 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2019
Operating Since
Coordinates
33.4468, -111.9563
County
Maricopa, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | AES ES GILBERT, LLC | — | — |
| Owner(s) | AES ES GILBERT, LLC | — | — |
| Status | Out of service | — | — |
The AES ES GILBERT facility is a 10 MW battery energy storage system (BESS) located in Maricopa County, Arizona. The plant began operating in 2019 and is owned and operated by AES ES GILBERT, LLC. It consists of a single generator utilizing lithium-ion battery (LIB) chemistry. The BESS has a total storage capacity of 40 MWh, providing a duration of 4 hours at its full power rating.
The facility interconnects to the Salt River Project balancing authority within the Western Electricity Coordinating Council (WECC) NERC region. According to available data, the plant ranks 68th out of 68 power plants in Arizona and 770th out of 1205 nationally. Financial data indicates a power purchase agreement (PPA) price of $7 per MWh, as reported in FERC Electric Quarterly Reports (EQR). The plant's primary fuel is listed as MWH, indicating it draws power from the grid to charge its batteries.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
0 MWh
Net Discharge
0 MWh
Annual Net Energy
0.0%
Capacity Factor
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.
AES ES Gilbert, LLC · Data from 2019–2024
$7.0/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.
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No ask pi reports yet for this entity.
ask pi about AES ES GILBERTSalt River Project (SRP)
Grid Voltage
12.47 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP