SEAHAWK STORAGE
203.699 MW storage in Santa Cruz, CA · In queue since April 2021 · Proposed COD September 2029
203.699 MW
Capacity
1
Components
Battery
5y 1m
In Queue
IA Executed
IA Status
COD target: 2029
Total Duration
8y 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 executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2029-09-18
SEAHAWK STORAGE is a proposed 203.7 MW battery storage project located in Santa Cruz County, California. The project is in the CAISO interconnection queue as entry CAISO-1865, with a queue entry date of April 15, 2021, and a proposed commercial operation date of September 18, 2029. The interconnection agreement has been executed. The project is interconnected to the PG&E utility grid at the Green Valley 115 kV point of interconnection.
The SEAHAWK STORAGE project has been the subject of recent news coverage, with four articles appearing in industry, development, and regulatory publications.
Generated from interconnection queue and public data sources
State
CA
County
Santa Cruz
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
PGAE
Entity
CAISO
Service Type
—
Point of Interconnection
Green Valley 115 kV
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_ZP26_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- GRNVALY_1_N025
- POI Substation
- Green Valley 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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