Fort Duncan BESS
101.52 MW storage in Maverick, TX · In queue since August 2021 · Proposed COD June 2025
101.52 MW
Capacity
1
Components
Battery
4y 9m
In Queue
IA Executed
IA Status
Signed Dec 2022
Queue → IA
1y 4m
IA → COD
2y 6m
Total Duration
1y 4m
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: 2025-06-01
The Fort Duncan BESS project is a proposed 101.52 MW battery storage project located in Maverick County, Texas. The developer is Fort Duncan BESS LLC. This project is in the ERCOT interconnection queue as entry ERCOT-23INR0350, with a queue entry date of August 17, 2021, and a proposed commercial operation date of June 1, 2025. The Interconnection Agreement (IA) for the project was executed on December 12, 2022.
The proposed project is linked to the existing Fort Duncan BESS operating plant (EIA ID 67752). Recent news coverage indicates that the project has been mentioned in the news, particularly in the context of deals.
Generated from interconnection queue and public data sources
State
TX
County
Maverick
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Fort Duncan BESS LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
78015 Rosita Creek ROSICR 138kV will be at the new LCRA TSC Sunglow Substation
Data Source
LBNL
- ISO / RTO
- ERCOT
- Trading Hub
- HB_SOUTH
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- FTDUNCAN_RN
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.
Last updated 2026-03-26
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