BALDY MESA
225 MW hybrid in San Bernardino, CA · In queue since May 2017 · Proposed COD November 2026
225 MW
Capacity
2
Components
Solar + Battery
9 years
In Queue
IA Executed
IA Status
Signed Nov 2020
Queue → IA
3y 6m
IA → COD
6 years
Total Duration
3y 6m
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: 2026-11-01
The BALDY MESA project is a proposed 225 MW hybrid solar and battery energy storage project located in San Bernardino County, California. The development project consists of a 150 MW solar array coupled with a 75 MW battery energy storage system. Interconnection is being pursued through the CAISO queue (queue ID CAISO-1413) with Southern California Edison (SCE) as the utility. The project entered the queue on May 1, 2017, and has a proposed commercial operation date of November 1, 2026.
The project's interconnection agreement (IA) was executed on November 9, 2020. The point of interconnection (POI) is the Roadway Substation 115kV bus. The BALDY MESA project has been the subject of recent news coverage, with 16 articles appearing in industry and deals publications.
Generated from interconnection queue and public data sources
State
CA
County
San Bernardino
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
SCE
Entity
CAISO
Service Type
—
Point of Interconnection
Roadway Substation 115kV bus
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_SP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- SCEW_2_PDRP03-APND
- POI Substation
- Broadway 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.
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