Cottonwood Bayou Storage
153.03 MW storage in Brazoria, TX · In queue since October 2019 · Proposed COD June 2025
153.03 MW
Capacity
1
Components
Battery
6y 7m
In Queue
IA Executed
IA Status
Signed Mar 2022
Queue → IA
2y 5m
IA → COD
3y 3m
Total Duration
2y 5m
Schedule
11 months past proposed COD
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: 2025-06-12
Cottonwood Bayou Storage is a proposed 153.03 MW battery storage project located in Brazoria County, Texas. The project, developed by Cottonwood Bayou Storage, LLC, is in the ERCOT interconnection queue as entry ERCOT-21INR0443, with a queue entry date of October 31, 2019. The proposed commercial operation date is June 12, 2025.
The project's Interconnection Agreement (IA) has been executed as of March 18, 2022. The point of interconnection (POI) is at tap 138kV 42870 Liverpool - 43070 Petson.
Generated from interconnection queue and public data sources
State
TX
County
Brazoria
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Cottonwood Bayou Storage, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
tap 138kV 42870 Liverpool - 43070 Petson
Data Source
LBNL
- ISO / RTO
- ERCOT
- Trading Hub
- HB_HOUSTON
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- LON_RN1
- POI Substation
- Liverpool 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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