WILLOW SPRINGS SOLAR 4
BetaActiveBatteryCAISOLBNL + Live
75 MW storage in Kern, CA · In queue since April 2015 · Proposed COD June 2026
75 MW
Capacity
1
Components
Battery
10y 11m
In Queue
IA Executed
IA Status
Signed Nov 2018
Interconnection Timeline
Queue → IA
3y 7m
IA → COD
7y 7m
Total Duration
3y 7m
Construction75%
Queue EntryApr 30, 2015
Interconnection request submitted to ISO/RTO
Cluster Study (Phase I/II)
CAISO uses cluster studies where projects are batched annually and studied together.
Typical: 36–48 months (IR to IA)
Interconnection AgreementNov 20, 2018
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
ConstructionCurrent
Project under construction
Typical: 6–18 months
Commercial Operation
Proposed COD: 2026-06-01
Project Details
State
CA
County
Kern
Region
CAISO
Developer
—
Utility
SCE
Entity
CAISO
Point of Interconnection
Whirlwind Substation 230kV
Data Source
LBNL + Live
No news available for this project.