Guajillo Energy Storage
Guajillo Energy Storage is a 229 MW battery storage project in Webb County, Texas, operated by Guajillo Energy Storage, LLC. EIA-860M lists 1 generating unit here, inside ERCOT. Its unit entered service in 2025.
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
- 228.7 MW
- 200 MW net summer
- Generating units
- 1
- In service
- 2025
- EIA plant ID
- 68613
Where it is
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- County
- Webb County, Texas
- Coordinates
- 27.6289, -99.2664
- Balancing authority
- ERCO
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Guajillo Energy Storage, LLC
- Primary energy source
- Battery
- Technologies
- Batteries
- Status
- Operating
Guajillo Energy Storage: FAQ
- Where is Guajillo Energy Storage?
- In Webb 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 Guajillo Energy Storage?
- 229 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Guajillo Energy Storage?
- EIA-860M names Guajillo Energy Storage, LLC 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 Guajillo Energy Storage LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Guajillo Energy Storage, LLC 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 "Guajillo Energy Storage LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Guajillo Energy Storage still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.