Where is Johnsonville Dam?

In Rensselaer 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 Johnsonville Dam?

4 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.

Who owns Johnsonville Dam?

EIA-860M names Erie Boulevard Hydropower LP 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 Johnsonville Dam LLC?

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

Is Johnsonville Dam still running?

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

Johnsonville Dam

Johnsonville Dam is a 4 MW hydroelectric power plant in Rensselaer County, New York, operated by Erie Boulevard Hydropower LP. EIA-860M lists 2 generating units here, inside NYISO. Its units entered service in 1909.

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: 4 MW; 2.5 MW net summer
Generating units: 2
In service: 1909
EIA plant ID: 2580

Where it is

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County: Rensselaer County, New York
Coordinates: 42.9204, -73.5089
Balancing authority: NYIS
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Erie Boulevard Hydropower LP
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Operating (1) · Out of service but expected to return to service in next calendar year (1)

Every plant Erie Boulevard Hydropower LP reports to EIA →

Johnsonville Dam: FAQ

Where is Johnsonville Dam?: In Rensselaer 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 Johnsonville Dam?: 4 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Johnsonville Dam?: EIA-860M names Erie Boulevard Hydropower LP 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 Johnsonville Dam LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Erie Boulevard Hydropower LP 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 "Johnsonville Dam LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Johnsonville Dam still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.