Castle Corral BESS
200.9 MW storage in Mills, TX · In queue since July 2023 · Proposed COD September 2026
200.9 MW
Capacity
1
Components
Battery
3 years
In Queue
—
IA Status
COD target: 2026
Total Duration
3y 2m
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 not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2026-09-14
The Castle Corral BESS project is a proposed 201.1 MW battery storage project located in Mills County, Texas. Developed by Castle Corral BESS, LLC, the project consists of 201.1 MW of battery capacity. It is currently active in the ERCOT interconnection queue as entry ERCOT-25INR0475, with a queue entry date of July 31, 2023.
The proposed commercial operation date for the Castle Corral BESS project is August 23, 2027. The project's interconnection status is currently in the Facility Study phase, and it intends to interconnect at the 345 kV Russell Gap Switching Station Bus #3348. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
TX
County
Mills
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
—
Utility
—
Entity
ERCOT
Service Type
—
Data Source
LBNL
Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. 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 — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. 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. The bankability view that determines whether the deal clears its covenants once online. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- ERCOT
- Trading Hub
- HB_SOUTH
- Hub Confidence
- MEDIUM
- POI Substation
- Ajo Switching Station
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 Castle Corral BESSForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
