Marcos BESS
115.88 MW storage in Victoria, TX · In queue since February 2024 · Proposed COD August 2027
115.88 MW
Capacity
1
Components
Battery
2y 3m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
3y 6m
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: 2027-08-15
The Marcos BESS project is a proposed 115.88 MW battery storage project located in Victoria County, Texas. Developed by GRS BESS Texas Eight LLC, the project entered the ERCOT interconnection queue as queue ID ERCOT-27INR0170 on February 7, 2024. The proposed commercial operation date is August 15, 2027, and the project's interconnection status is currently in the Facility Study phase.
The point of interconnection for the Marcos BESS project is to the 138 kV line from EDNA (#8118) to VICTORIA4A (#8172). The project has appeared in recent news coverage regarding energy storage developments in the ERCOT region.
Generated from interconnection queue and public data sources
State
TX
County
Victoria
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
GRS BESS Texas Eight LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
To the 138 kV line from EDNA (#8118) to VICTORIA4A (#8172)
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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