Grand BESS
205 MW storage in Santa Clara, CA · In queue since April 2023 · Proposed COD December 2028
205 MW
Capacity
1
Components
Battery
3y 1m
In Queue
Not Started
IA Status
COD target: 2028
Total Duration
5y 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: 2028-12-31
The Grand BESS project is a proposed 205 MW battery storage project located in Santa Clara County, California. The project is being developed within the California Independent System Operator (CAISO) region and is interconnected to the PGAE utility grid at the PIERCY 115 kV point of interconnection.
The project, identified as CAISO-55003 in the interconnection queue, entered the queue on April 17, 2023, with a proposed commercial operation date of December 31, 2028. As of the current data, the interconnection agreement (IA) status is listed as "Not Started." The project consists of 205 MW of battery storage capacity.
Generated from interconnection queue and public data sources
State
CA
County
Santa Clara
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
PGAE
Entity
CAISO
Service Type
—
Point of Interconnection
PIERCY 115 kV
Data Source
LBNL
- ISO / RTO
- CAISO
- Trading Hub
- TH_ZP26_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- LECEFGT1_7_B1
- POI Substation
- Piercy 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.
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