GATEWAY ENERGY STORAGE 2
256.29 MW storage in San Diego, CA · In queue since April 2021 · Proposed COD February 2035
256.29 MW
Capacity
1
Components
Battery
5y 1m
In Queue
System Impact Study
IA Status
COD target: 2035
Total Duration
13y 10m
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: 2035-02-05
The GATEWAY ENERGY STORAGE 2 project is a proposed 256.29 MW battery storage project located in San Diego County, California. The project is in the California Independent System Operator (CAISO) interconnection queue as queue ID CAISO-2185, with an entry date of April 15, 2021. The proposed commercial operation date is February 5, 2035. The project's interconnection status is currently in the System Impact Study phase.
The project, which would interconnect to San Diego Gas & Electric (SDGE) at the Otay Mesa Switchyard 230 kV point of interconnection, has been the subject of recent news coverage, with five articles categorized as regulatory, industry, and hazard-related.
Generated from interconnection queue and public data sources
State
CA
County
San Diego
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
SDGE
Entity
CAISO
Service Type
—
Point of Interconnection
Otay Mesa Switchyard 230 kV
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_SP15_GEN-APND
- Hub Confidence
- MEDIUM
- POI Substation
- Costa Mesa
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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