ALLEGHENY ENERGY STORAGE
353.2 MW storage in Contra Costa, CA · In queue since April 2021 · Proposed COD September 2032
353.2 MW
Capacity
1
Components
Battery
5y 1m
In Queue
System Impact Study
IA Status
COD target: 2032
Total Duration
11y 5m
Interconnection request submitted to ISO/RTO
CAISO uses cluster studies where projects are batched annually and studied together.
Typical: 36–48 months (IR to IA)
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2032-09-20
The ALLEGHENY ENERGY STORAGE project is a proposed 353.2 MW battery storage development in Contra Costa County, California. The project is located within the CAISO region and is interconnected with Pacific Gas & Electric (PGAE). It entered the CAISO interconnection queue as queue ID CAISO-1872 on April 15, 2021, with a proposed commercial operation date of September 20, 2032. Its interconnection status is currently in the System Impact Study phase.
The ALLEGHENY ENERGY STORAGE project has been the subject of recent news coverage, with 18 articles appearing in the press. These articles primarily focus on regulatory and industry aspects of the project.
Generated from interconnection queue and public data sources
State
CA
County
Contra Costa
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
PGAE
Entity
CAISO
Service Type
—
Point of Interconnection
Pittsburg 115 kV
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_NP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- PITTES1_2_N007
- POI Substation
- Pittsburg Substation
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.
Last updated 2026-03-26
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