Mountaineer Solar
332.1 MW generation in Brown, TX · In queue since April 2019 · Proposed COD November 2028
332.1 MW
Capacity
1
Components
Solar
7y 3m
In Queue
Facility Study
IA Phase
COD target: 2028
Total Duration
9y 7m
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: 2028-11-01
Mountaineer Solar is a proposed solar generation project located in Brown County, Texas, with a total capacity of 329.64 MW. The project, developed by Mustang Mountaineer Solar LLC, is in the ERCOT interconnection queue as entry ERCOT-21INR0294, with a queue entry date of April 16, 2019. The proposed commercial operation date is November 1, 2028, and the project's interconnection agreement status is currently Facility Study.
The Mountaineer Solar project has been the subject of recent news coverage, with nine articles appearing in industry, grid, and deals publications.
Generated from interconnection queue and public data sources
Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
TX
County
Brown
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Mustang Mountaineer Solar LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
1444 Brown 345 kV
Data Source
LBNL + Live
Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. 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 — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. 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. The bankability view that determines whether the deal clears its covenants once online. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- BBSES_UNIT1
- POI Substation
- Big Brown Station
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.
Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
