Castle Corral BESS
201.1 MW storage in Mills, TX · In queue since July 2023 · Proposed COD August 2027
201.1 MW
Capacity
1
Components
Battery
2y 10m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
4y 1m
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: 2027-08-23
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
State
TX
County
Mills
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Castle Corral BESS, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
345 kV Russell Gap Switching Station Bus #3348
Data Source
LBNL
- 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.
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