WILLOW SPRINGS SOLAR 3
50 MW storage in Kern, CA · In queue since April 2014 · Proposed COD June 2026
50 MW
Capacity
1
Components
Battery
12y 1m
In Queue
IA Executed
IA Status
Signed Nov 2017
Queue → IA
3y 7m
IA → COD
8y 7m
Total Duration
3y 7m
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: 6–18 months
Proposed COD: 2026-06-01
The Willow Springs Solar 3 project is a proposed 50 MW battery storage project located in Kern County, California. It is interconnected to the CAISO grid under queue ID CAISO-1076. The project entered the interconnection queue on April 30, 2014, and has a proposed commercial operation date of June 1, 2026. The interconnection agreement was executed on November 27, 2017. The point of interconnection is the Whirlwind Substation at 230 kV.
The development project is listed as active in the interconnection queue and 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
Whirlwind Substation 230 kV
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_SP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- ASTORIA2_7_N001
- POI Substation
- Whirlwind 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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