SOUTHERN SELECT ENERGY STORAGE
404.3 MW storage in Galveston, TX · In queue since October 2023 · Proposed COD March 2027
404.3 MW
Capacity
1
Components
Battery
2y 7m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
3y 5m
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: 2027-03-31
The Southern Select Energy Storage project is a proposed 404.3 MW battery storage project located in Galveston County, Texas. The developer is Southern Select Energy Storage LLC. It is currently in the ERCOT interconnection queue as entry ERCOT-26INR0340, with a queue entry date of October 25, 2023, and a proposed commercial operation date of March 31, 2027. The project's interconnection agreement status is currently in the Facility Study phase.
The Southern Select Energy Storage project has been the subject of recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Galveston
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
SOUTHERN SELECT ENERGY STORAGE LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Bus Name: TNHEIGHTS_1 Bus Number: 38740
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- LOW
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.
