Maderagemela BESS1
153.96 MW storage in Waller, TX · In queue since February 2024 · Proposed COD October 2027
153.96 MW
Capacity
1
Components
Battery
2y 3m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
3y 8m
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: 2027-10-27
The Maderagemela BESS1 project is a proposed 153.96 MW battery storage project located in Waller County, Texas. Developed by Twinwood ES1, LLC, the project entered the ERCOT interconnection queue as ERCOT-26INR0426 on February 27, 2024. The proposed commercial operation date is October 27, 2027.
The project's interconnection status is currently in the Facility Study phase. The point of interconnection is Tap 138kV 44750 FULSHR_S25_8 to 44860 TWINWD_S25_8.
Generated from interconnection queue and public data sources
State
TX
County
Waller
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Twinwood ES1, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138kV 44750 FULSHR_S25_8 to 44860 TWINWD_S25_8
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.
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