APS-Q384
125 MW storage in Maricopa, AZ · In queue since March 2021 · Proposed COD October 2025
125 MW
Capacity
1
Components
Battery
5y 2m
In Queue
In Progress (unknown study)
IA Status
COD target: 2025
Total Duration
4y 7m
Schedule
7 months past proposed COD
Interconnection request submitted to ISO/RTO
Project undergoes interconnection studies to assess grid impact.
Typical: 18–36 months
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2025-10-01
APS-Q384 is a proposed 125 MW battery storage project located in Maricopa County, Arizona. The project is in the Arizona Public Service (APS) interconnection queue with a queue entry date of March 31, 2021, and a proposed commercial operation date of October 1, 2025. The interconnection agreement status is listed as "In Progress (unknown study)".
The project, being developed by APS, consists entirely of battery storage. The point of interconnection is the Westwing 69kV Substation. The project has appeared in recent news coverage regarding energy storage development in Arizona.
Generated from interconnection queue and public data sources
State
AZ
County
Maricopa
Grid Region
Mountain West
Market
—
Developer
—
Utility
Arizona Public Service
Entity
APS
Service Type
—
Point of Interconnection
Westwing 69kV Substation
Data Source
LBNL
- ISO / RTO
- MOUNTAIN_WEST
- Trading Hub
- PALOVERDE
- Hub Confidence
- UNKNOWN
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
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