SANBORN SOLAR 2
706.5 MW hybrid in Kern, CA · In queue since April 2018 · Proposed COD October 2025
706.5 MW
Capacity
2
Components
Solar + Battery
8y 1m
In Queue
IA Executed
IA Status
Signed May 2020
Queue → IA
2y 1m
IA → COD
5y 5m
Total Duration
2y 1m
Schedule
7 months past proposed COD
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 executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 18–30 months
Proposed COD: 2025-10-01
The proposed SANBORN SOLAR 2 project is a 706.5 MW hybrid solar and battery energy storage development in Kern County, California. The project, located within the CAISO region and interconnected with Southern California Edison (SCE), consists of a 334 MW solar array coupled with a 372.5 MW battery energy storage system.
The project entered the CAISO interconnection queue as queue ID CAISO-1518 on April 16, 2018, with a proposed commercial operation date of October 1, 2025. An Interconnection Agreement (IA) was executed on May 19, 2020. The point of interconnection is the Windhub Substation at 230kV. The project has been the subject of recent news coverage.
Generated from interconnection queue and public data sources
State
CA
County
Kern
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
SCE
Entity
CAISO
Service Type
—
Point of Interconnection
Windhub Substation 230kV
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_SP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- ALTA6B2_7_N003
- POI Substation
- Windhub 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.
Last updated 2026-03-26
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