Sienna 3
576 MW hybrid in San Bernardino, CA · In queue since April 2023 · Proposed COD December 2031
576 MW
Capacity
2
Components
Solar + Battery
2y 11m
In Queue
Not Started
IA Status
COD target: 2031
Total Duration
8y 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: 2031-12-31
State
CA
County
San Bernardino
Region
CAISO
Developer
—
Utility
SCE
Entity
CAISO
Point of Interconnection
CALCITE 230 kV
Data Source
LBNL
California utility SCE seeks expedited approval for solar-plus-storage offtake contracts
Southern California Edison (SCE) is seeking expedited CPUC approval for offtake contracts related to Copia Power's Centennial Flats project.
California utility SCE seeks expedited approval for solar-plus-storage offtake contracts
Southern California Edison (SCE) is seeking expedited CPUC approval for offtake contracts related to Copia Power's Centennial Flats project.
California utility SCE seeks expedited approval for solar-plus-storage offtake contracts
Southern California Edison (SCE) is seeking expedited CPUC approval for offtake contracts related to Copia Power's Centennial Flats project.
California utility SCE seeks expedited approval for solar-plus-storage offtake contracts
Southern California Edison (SCE) is seeking expedited CPUC approval for offtake contracts related to Copia Power's Centennial Flats project.
Last updated 2026-03-26