Rex Storage
256.4 MW storage in Harris, TX · In queue since June 2024 · Proposed COD September 2027
256.4 MW
Capacity
1
Components
Battery
1y 11m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
3y 3m
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: 2027-09-15
The Rex Storage project is a proposed 256.4 MW battery energy storage system located in Harris County, Texas. Developed by Rex BESS, LLC, the project entered the ERCOT interconnection queue as entry ERCOT-26INR0503 on June 13, 2024. The proposed commercial operation date is September 15, 2027.
The project's interconnection status is currently in the Facility Study phase. The point of interconnection is the 48284 Pilgrim 138kV location. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Harris
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Rex BESS, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
48284 Pilgrim 138kV
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_HOUSTON
- Hub Confidence
- MEDIUM
- POI Substation
- Pilgrim 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.
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