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113 MW BESS operating in Yuma, AZ — Arizona Public Service Company
113 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Coordinates
32.9942, -113.5098
County
Yuma, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Leeward Asset Management, LLC | — | — |
| Owner(s) | Leeward Asset Management, LLC | — | — |
| Status | Operating | — | — |
Sierra Pinta BESS is a battery energy storage system located in Yuma County, Arizona. The plant has a total capacity of 113 MW and consists of a single generator. It is owned and operated by Leeward Asset Management, LLC. The plant's primary fuel is electricity (MWH), which it uses to charge and discharge its batteries.
Sierra Pinta BESS operates within the Arizona Public Service Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. According to state rankings, the plant is the 46th largest out of 47 plants in Arizona. Nationally, it is ranked 453 out of 514 plants.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−2.1K MWh
Net Charging
—
Annual Net Energy
—
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.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $153.8M
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 articlesNo ask pi reports yet for this entity.
ask pi about Sierra Pinta BESSArizona Public Service Company (AZPS)
Grid Voltage
500.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP