SANBORN SOLAR 2
706.5 MW hybrid in Kern, CA · In queue since April 2018 · Proposed COD October 2025
706.5 MW
Capacity
2
Components
Solar + Battery
8y 3m
In Queue
IA Executed
IA Phase
Signed Dec 2024
Queue → IA
6y 8m
IA → COD
10 months
Total Duration
6y 8m
Schedule
9 months past proposed COD
Study Phase
C11
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: 2025-10-01
The proposed SANBORN SOLAR 2 project is a 706.5 MW hybrid solar and battery energy storage development in Kern County, California. The project, located within the CAISO region and interconnected with Southern California Edison (SCE), consists of a 334 MW solar array coupled with a 372.5 MW battery energy storage system.
The project entered the CAISO interconnection queue as queue ID CAISO-1518 on April 16, 2018, with a proposed commercial operation date of October 1, 2025. An Interconnection Agreement (IA) was executed on May 19, 2020. The point of interconnection is the Windhub Substation at 230kV. The project has been the subject of recent news coverage.
Generated from interconnection queue and public data sources
Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
CA
County
Kern
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
SCE
Entity
CAISO
Service Type
NRIS
Point of Interconnection
Windhub Substation 230kV
Data Source
LBNL + Live
Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.
See the full risk decomposition + scenarios for this project.
Forward generation outlook — first-year production estimate and 10-year P50 trajectory, with probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
See the full forecast + scenario decomposition for this project.
Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- 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 2026-03-26
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Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
