SHERMAN ENERGY STORAGE
256.29 MW storage in Contra Costa, CA · In queue since April 2021 · Proposed COD June 2031
256.29 MW
Capacity
1
Components
Battery
4y 11m
In Queue
System Impact Study
IA Status
COD target: 2031
Total Duration
10y 2m
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: 2031-06-18
State
CA
County
Contra Costa
Region
CAISO
Developer
—
Utility
PGAE
Entity
CAISO
Point of Interconnection
Contra Costa PP 230 kV
Data Source
LBNL + Live
Utility Portland General Electric finalises agreements for 1GW renewables and BESS
Portland General Electric (PGE) has finalised agreements for more than 1000MW of new renewable energy and BESS projects in Oregon,US.
Utility Portland General Electric finalises agreements for 1GW renewables and BESS
Portland General Electric (PGE) has finalised agreements for more than 1000MW of new renewable energy and BESS projects in Oregon,US.
Utility Portland General Electric finalises agreements for 1GW renewables and BESS
Portland General Electric (PGE) has finalised agreements for more than 1000MW of new renewable energy and BESS projects in Oregon,US.
Utility Portland General Electric finalises agreements for 1GW renewables and BESS
Portland General Electric (PGE) has finalised agreements for more than 1000MW of new renewable energy and BESS projects in Oregon,US.
Last updated 2026-03-26