SMT Rio Grande II LLC
SMT Rio Grande II LLC is a 10 MW battery storage project in Starr County, Texas, operated by SMT Rio Grande II LLC. EIA-860M lists 1 generating unit here, inside ERCOT. Its unit entered service in 2023.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 10 MW
- 10 MW net summer
- Generating units
- 1
- In service
- 2023
- EIA plant ID
- 66935
Where it is
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- County
- Starr County, Texas
- Coordinates
- 26.391, -98.8204
- Balancing authority
- ERCO
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- SMT Rio Grande II LLC
- Primary energy source
- Battery
- Technologies
- Batteries
- Status
- Operating
SMT Rio Grande II LLC: FAQ
- Where is SMT Rio Grande II LLC?
- In Starr County, Texas (TX). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is SMT Rio Grande II LLC?
- 10 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns SMT Rio Grande II LLC?
- EIA-860M names SMT Rio Grande II LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is SMT Rio Grande II LLC still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.