SOSA Storage
157.36 MW storage in Madison, TX · In queue since July 2022 · Proposed COD May 2027
157.36 MW
Capacity
1
Components
Battery
3y 10m
In Queue
IA Executed
IA Status
Signed Dec 2023
Queue → IA
1y 5m
IA → COD
3y 5m
Total Duration
1y 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 executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2027-05-11
The SOSA Storage project is a proposed 157.36 MW battery energy storage system in Madison County, Texas. Developed by SOSA Energy Center LLC, the project is currently in the ERCOT interconnection queue as entry ERCOT-25INR0131, with a queue entry date of July 25, 2022. The project's proposed commercial operation date is May 11, 2027.
The project has an executed Interconnection Agreement (IA), which was finalized on December 5, 2023. The point of interconnection (POI) is Tap 138kV 25 North Zulch - 47 Hilltop Lakes.
Generated from interconnection queue and public data sources
State
TX
County
Madison
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
SOSA Energy Center LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138kV 25 North Zulch - 47 Hilltop Lakes
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_SOUTH
- Hub Confidence
- MEDIUM
- POI Substation
- North Zulch 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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