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.

202 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

EIA-860M names Deriva Energy 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 Mesteno LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Deriva Energy 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 "Mesteno LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Mesteno still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Mesteno

Mesteno is a 202 MW wind farm in Starr County, Texas, operated by Deriva Energy. EIA-860M lists 1 generating unit here, inside ERCOT. Its unit entered service in 2019.

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: 201.6 MW; 200 MW net summer
Generating units: 1
In service: 2019
EIA plant ID: 62258

Where it is

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County: Starr County, Texas
Coordinates: 26.5237, -98.7455
Balancing authority: ERCO
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Deriva Energy
Primary energy source: Wind
Technologies: Onshore Wind Turbine
Status: Operating

Every plant Deriva Energy reports to EIA →

Mesteno: FAQ

Where is Mesteno?: 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 Mesteno?: 202 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Mesteno?: EIA-860M names Deriva Energy 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 Mesteno LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Deriva Energy 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 "Mesteno LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Mesteno still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.