Mountain Valley Storage
306 MW storage in Stanislaus, CA · In queue since April 2023 · Proposed COD December 2029
306 MW
Capacity
1
Components
Battery
2y 11m
In Queue
Not Started
IA Status
COD target: 2029
Total Duration
6y 8m
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: 2029-12-31
State
CA
County
Stanislaus
Region
CAISO
Developer
—
Utility
PGAE
Entity
CAISO
Point of Interconnection
QUINTO SW STA-FINK SW STA
Data Source
LBNL
County supervisors greenlight draft rules for battery energy storage facilities
A proposal next to a Pacific Gas and Electric Co. substation near Watsonville for a lithium battery facility could be approved without local...
County supervisors greenlight draft rules for battery energy storage facilities
A proposal next to a Pacific Gas and Electric Co. substation near Watsonville for a lithium battery facility could be approved without local...
County supervisors greenlight draft rules for battery energy storage facilities
A proposal next to a Pacific Gas and Electric Co. substation near Watsonville for a lithium battery facility could be approved without local...
County supervisors greenlight draft rules for battery energy storage facilities
A proposal next to a Pacific Gas and Electric Co. substation near Watsonville for a lithium battery facility could be approved without local...
Last updated 2026-03-26