Marengo BESS
120.72 MW storage in Cameron, TX · In queue since May 2023 · Proposed COD May 2028
120.72 MW
Capacity
1
Components
Battery
3 years
In Queue
Facility Study
IA Status
COD target: 2028
Total Duration
5 years
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: 2028-05-15
The Marengo BESS project is a proposed 120.72 MW battery storage project located in Cameron County, Texas. The developer is BRP BLUE TOPAZ 8, LLC. It is currently in the ERCOT interconnection queue as entry ERCOT-25INR0419, with a queue entry date of May 15, 2023, and a proposed commercial operation date of May 15, 2028. The project's interconnection agreement status is currently in the Facility Study phase.
The point of interconnection for the Marengo BESS project is the 8640 Kelvin Station 138kV (AEP). The project has appeared in recent news coverage regarding energy storage developments in Texas.
Generated from interconnection queue and public data sources
State
TX
County
Cameron
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
BRP BLUE TOPAZ 8, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
8640 Kelvin Station 138kV (AEP)
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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