TWIN PALMS SOLAR
576.144 MW hybrid in Riverside, CA · In queue since April 2021 · Proposed COD July 2030
576.144 MW
Capacity
2
Components
Solar + Battery
5y 3m
In Queue
IA Executed
IA Phase
Signed Jun 2025
Queue → IA
4y 2m
IA → COD
5y 1m
Total Duration
4y 2m
Study Phase
C14
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: 2030-07-06
The Twin Palms Solar project is a proposed 576.14 MW hybrid solar and battery energy storage development in Riverside County, California. The project, located within the CAISO region and interconnected with Southern California Edison (SCE), consists of 288 MW of solar photovoltaic generation and 288.14 MW of battery storage. It is currently in the CAISO interconnection queue as entry CAISO-2048, with a queue entry date of April 15, 2021. The proposed commercial operation date is July 6, 2030, and the project's interconnection status is currently in the System Impact Study phase.
The Twin Palms Solar project has been the subject of recent news coverage, with at least nine articles appearing in industry and deal-making publications. The point of interconnection is the Colorado River Substation at 230 kV.
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
Riverside
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
SCE
Entity
CAISO
Service Type
NRIS
Point of Interconnection
Colorado River Substation 230 kV
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)
- CRIMSN_7_CN3
- POI Substation
- Colorado River 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.
