Fort Duncan BESS
106.15 MW generation in Maverick, TX · In queue since August 2021 · Proposed COD June 2025
106.15 MW
Capacity
1
Components
Other
4y 11m
In Queue
IA Executed
IA Phase
Signed Dec 2022
Queue → IA
1y 4m
IA → COD
2y 6m
Total Duration
1y 4m
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)
Construction pending
Typical: 12–36 months
Proposed COD: 2025-06-19
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
Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
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_x000D_ will be at the new LCRA_x000D_ TSC Sunglow Substation
Data Source
LBNL
Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.
See the full risk decomposition + scenarios for this project.
Forward generation outlook — first-year production estimate and 10-year P50 trajectory, with probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
See the full forecast + scenario decomposition for this project.
Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- 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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