Elkhorn Expansion
78.6 MW storage in Monterey, CA · In queue since April 2023 · Proposed COD May 2028
78.6 MW
Capacity
1
Components
Battery
3y 1m
In Queue
Not Started
IA Status
COD target: 2028
Total Duration
5y 1m
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: 2028-05-01
The Elkhorn Expansion is a proposed 78.6 MW battery storage project located in Monterey County, California. Interconnecting to PG&E, the project is listed in the CAISO interconnection queue as entry CAISO-54639, with a queue entry date of April 17, 2023. The proposed commercial operation date is May 1, 2028, and the interconnection agreement status is "Not Started".
The Elkhorn Expansion has been the subject of recent news coverage, with 10 articles appearing in the press. These articles cover topics such as industry trends, grid infrastructure, business deals, and potential hazards. The project is linked to the existing Elkhorn operating plant.
Generated from interconnection queue and public data sources
State
CA
County
Monterey
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
PGAE
Entity
CAISO
Service Type
—
Point of Interconnection
MOSS LANDING PP 115 kV
Data Source
LBNL
- ISO / RTO
- CAISO
- Trading Hub
- TH_ZP26_GEN-APND
- Hub Confidence
- LOW
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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