In Clinton County, New York (NY). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

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

EIA-860M names Valcour Operating Services, 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 Altona LLC?

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

Is Altona still running?

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

Altona

Altona is a 98 MW wind farm in Clinton County, New York, operated by Valcour Operating Services, LLC. EIA-860M lists 1 generating unit here, inside NYISO. Its unit entered service in 2009.

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: 97.5 MW; 97.5 MW net summer
Generating units: 1
In service: 2009
EIA plant ID: 56901

Where it is

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County: Clinton County, New York
Coordinates: 44.8216, -73.6509
Balancing authority: NYIS
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Valcour Operating Services, LLC
Primary energy source: Wind
Technologies: Onshore Wind Turbine
Status: Operating

Every plant Valcour Operating Services, LLC reports to EIA →

Altona: FAQ

Where is Altona?: In Clinton County, New York (NY). 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 Altona?: 98 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Altona?: EIA-860M names Valcour Operating Services, 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 Altona LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Valcour Operating Services, 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 "Altona LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Altona still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.