BELLEFIELD SOLAR FARM
1,000 MW hybrid in Kern, CA · In queue since April 2018 · Proposed COD August 2025
1,000 MW
Capacity
2
Components
Solar + Battery
8y 1m
In Queue
IA Executed
IA Status
Signed May 2020
Queue → IA
2y 1m
IA → COD
5y 3m
Total Duration
2y 1m
Schedule
9 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: 2025-08-01
The Bellefield Solar Farm is a proposed 1000 MW hybrid solar and battery energy storage project located in Kern County, California. The development project consists of 500 MW of solar photovoltaic generation and 500 MW of battery energy storage. The project is interconnected to the CAISO grid under queue ID CAISO-1510, with an interconnection request date of April 16, 2018, and a proposed commercial operation date of August 1, 2025.
The project's interconnection agreement (IA) was executed on May 7, 2020. The point of interconnection is the Windhub Substation at 230kV. The project has appeared in 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 2026-03-14
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