Arroyo Storage
183.76 MW generation in Cameron, TX · In queue since May 2022 · Proposed COD April 2026
183.76 MW
Capacity
1
Components
Battery
4y 2m
In Queue
IA Executed
IA Phase
Signed Aug 2022
Queue → IA
3 months
IA → COD
3y 8m
Total Duration
3 months
Schedule
3 months past proposed COD
Interconnection request submitted to ISO/RTO
ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.
Typical: 18–30 months (fastest major ISO)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 18–30 months
Proposed COD: 2026-04-14
The Arroyo Storage project is a proposed 183.76 MW battery energy storage system in Cameron County, Texas. The project, developed by BT Cantwell Solar, LLC, is currently in the ERCOT interconnection queue as entry ERCOT-24INR0306, with a queue entry date of May 10, 2022. The proposed commercial operation date is April 14, 2026.
The project's Interconnection Agreement (IA) has been executed as of August 10, 2022. The point of interconnection is Tap 345kV 8318 Rio Hondo - 8317 La Palma at the New Gulch Substation. The Arroyo Storage 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
TX
County
Cameron
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
BT Cantwell Solar, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 345kV 8318 Rio Hondo - 8317 La Palma (New Gulch Substation )
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
- ERCOT
- Trading Hub
- HB_WEST
- Hub Confidence
- MEDIUM
- POI Substation
- Rio Hondo 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.
No Ask reports yet for this entity.
Ask about Arroyo StorageForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
