Helios Grid Reliability
205.45 MW storage in Calaveras, CA · In queue since April 2023 · Proposed COD September 2028
205.45 MW
Capacity
1
Components
Battery
2y 11m
In Queue
Not Started
IA Status
COD target: 2028
Total Duration
5y 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: 2028-09-15
State
CA
County
Calaveras
Region
CAISO
Developer
—
Utility
PGAE
Entity
CAISO
Point of Interconnection
LOCKEFORD 115 kV
Data Source
LBNL
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Last updated 2026-03-26