Angleton BESS
9.9 MW storage in Brazoria, TX · Proposed COD February 2025
9.9 MW
Capacity
1
Components
Battery
—
In Queue
IA Executed
IA Status
Signed Oct 2023
IA → COD
1y 4m
Schedule
15 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: 2025-02-13
Angleton BESS is a proposed 9.9 MW battery storage project located in Brazoria County, Texas. The project, developed by Brazoria Winmill BESS, LLC, is interconnected within the ERCOT region under queue ID ERCOT-24INR0547. It has an interconnection agreement (IA) executed on October 31, 2023, and a proposed commercial operation date of February 13, 2025.
The project is linked to the existing Angleton operating plant (EIA plant ID 64295).
Generated from interconnection queue and public data sources
State
TX
County
Brazoria
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Brazoria Winmill BESS, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
STATION NAME (TSP STATION CODE): Angleton (AE) LOAD/LOAD TRANSFORMER NAME: TR1 PTI BUS NUMBER: 42111 VOLTAGE (TRANSMISSION LEVEL): 138KV
Data Source
LBNL
- ISO / RTO
- ERCOT
- Trading Hub
- HB_HOUSTON
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- BRPANGLE_RN
- POI Substation
- Angleton 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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