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300 MW BESS operating in La Paz, AZ — California Independent System Operator
300 MW
Nameplate Capacity
2
Generators
units
Batteries
Technology
2025
Operating Since
Coordinates
33.5829, -113.5769
County
La Paz, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Atlas VII LLC | — | — |
| Owner(s) | Atlas VII LLC | — | — |
| Status | Operating | — | — |
Atlas VII is a 300 MW battery energy storage system located in La Paz County, Arizona. The plant, identified by the EIA plant code 68322, is owned and operated by Atlas VII LLC. It consists of 2 generators utilizing batteries as its primary fuel source, designated in energy data as MWH. The facility operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
Atlas VII holds a notable position among Arizona's power plants, ranking as the 26th largest out of 47 facilities in the state and 155th largest nationally out of 514 plants. The plant's activity has been noted in the news, with 3 articles covering deals related to the facility.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−488 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: $408.3M
Market Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_SP15_GEN-APND
Node Source
Plant coordinates only
No news articles linked yet for this plant.
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No ask pi reports yet for this entity.
ask pi about Atlas VIICalifornia Independent System Operator (CISO)
Grid Voltage
500.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP