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85 MW BESS operating in Maricopa, AZ — Arizona Public Service Company
85 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Coordinates
33.7122, -112.0820
County
Maricopa, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Scatter Wash Energy Storage, LLC | — | — |
| Owner(s) | Scatter Wash Energy Storage, LLC | — | — |
| Status | Operating | — | — |
Scatter Wash 2 is an 85 MW battery energy storage system (BESS) located in Maricopa County, Arizona. The facility began operating in 2025 and has one generator. It is owned and operated by Scatter Wash Energy Storage, LLC. The plant utilizes batteries as its primary fuel source, designated by the code "MWH." The BESS has a duration of 4 hours.
Scatter Wash 2 operates within the Arizona Public Service Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. According to available rankings, the plant is the 49th largest out of 68 facilities in Arizona and ranks 531st out of 1205 nationally. There have been 6 news articles related to the plant, all of which pertain to deals.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−1.2K MWh
Net Charging
-10.4K MWh
Annual Net Energy
-2.1%
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: $115.7M
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-14
View all articlesNo ask pi reports yet for this entity.
ask pi about Scatter Wash 2Arizona Public Service Company (AZPS)
Grid Voltage
69.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP