San Miguel
San Miguel is a 410 MW coal power plant in Atascosa County, Texas, operated by San Miguel Electric Coop, Inc. EIA-860M lists 1 generating unit here, inside ERCOT. Its unit entered service in 1982.
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
- 410 MW
- 391 MW net summer
- Generating units
- 1
- In service
- 1982
- EIA plant ID
- 6183
Where it is
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- County
- Atascosa County, Texas
- Coordinates
- 28.7044, -98.4775
- Balancing authority
- ERCO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- San Miguel Electric Coop, Inc
- Primary energy source
- Coal
- Technologies
- Conventional Steam Coal
- Status
- Operating
San Miguel: FAQ
- Where is San Miguel?
- In Atascosa 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 San Miguel?
- 410 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns San Miguel?
- EIA-860M names San Miguel Electric Coop, Inc as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as San Miguel LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — San Miguel Electric Coop, Inc here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "San Miguel LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is San Miguel still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.