Castor BESS
205.39 MW storage in Brazoria, TX · In queue since October 2021 · Proposed COD May 2026
205.39 MW
Capacity
1
Components
Battery
4y 9m
In Queue
IA Executed
IA Phase
Signed Feb 2023
Queue → IA
1y 4m
IA → COD
3y 3m
Total Duration
1y 4m
Schedule
2 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: 6–18 months
Proposed COD: 2026-05-22
Castor BESS is a proposed 205.39 MW battery storage project located in Brazoria County, Texas. The developer is BRP Castor BESS LLC. The project is interconnected within the Electric Reliability Council of Texas (ERCOT) queue as entry ERCOT-23INR0358, with an original queue entry date of October 4, 2021, and a proposed commercial operation date of May 22, 2026. The point of interconnection is the 138 kV West Columbia Local Substation (#39530).
The project's Interconnection Agreement (IA) has been executed as of February 15, 2023. The project is linked to the existing Castor operating plant (EIA plant ID 65870). The project has appeared in 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
Brazoria
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
BRP Castor BESS LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
138 kV West Columbia Local Substation (#39530)
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_HOUSTON
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- CAST_ESS_RN
- POI Substation
- West Columbia Local 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 Castor BESSForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
