In St Lawrence 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 Ogdensburg?

4 MW of nameplate capacity across 5 units, as of the EIA-860M release for 2026-07.

EIA-860M names Ampersand Ogdensburg Hydro, 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 Ogdensburg LLC?

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

Is Ogdensburg still running?

EIA-860M files it as "Out of service but expected to return to service in next calendar year" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Ogdensburg

Ogdensburg is a 4 MW hydroelectric power plant in St Lawrence County, New York, operated by Ampersand Ogdensburg Hydro, LLC. EIA-860M lists 5 generating units here, inside NYISO. Its units entered service in 1987.

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: 3.5 MW; 1 MW net summer
Generating units: 5
In service: 1987
EIA plant ID: 52058

Where it is

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County: St Lawrence County, New York
Coordinates: 44.7041, -75.487
Balancing authority: NYIS
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Ampersand Ogdensburg Hydro, LLC
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Out of service but expected to return to service in next calendar year (4) · Operating (1)

Every plant Ampersand Ogdensburg Hydro, LLC reports to EIA →

Ogdensburg: FAQ

Where is Ogdensburg?: In St Lawrence 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 Ogdensburg?: 4 MW of nameplate capacity across 5 units, as of the EIA-860M release for 2026-07.
Who owns Ogdensburg?: EIA-860M names Ampersand Ogdensburg Hydro, 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 Ogdensburg LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Ampersand Ogdensburg Hydro, 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 "Ogdensburg LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Ogdensburg still running?: EIA-860M files it as "Out of service but expected to return to service in next calendar year" for 2026-07. Statuses change monthly, and this page follows the monthly release.