First Green Energy

The Hollow Dam

The Hollow Dam Facility is located on the West Branch of the Oswegatchie River in the Town of Fowler, New York, approximately 16 kilometres south of Gouverneur, New York. The facility is rated at 900 kilowatts. The facility was constructed in 1987 and is located at an existing dam of 100 metres in length and includes a 70 metre spillway. The facility is equipped with two submersible Flygt turbine/generators, each capable of generating 450 kilowatts.

Maple Hill Generating Station

Right - 3 Flygt Units installed to a total output of 600kw.

Below - Cote Ste Catherine Generating Station near Montreal on the St Lawrence Seaway

Below Right - Compact, single unit plant in Japan.

Herkimer Hydroelectric Generating Facility

Herkimer Hydroelectric Generating Facility is located on West Canada Creek, upstream of the Village of Herkimer, New York. The facility is rated at 1,680 kilowatts and utilizes a head of three meters. The facility is located at a new concrete dam and overflow structure. There are four siphon-type, semi-kaplan ESAC turbine generators and one vertical Flygt turbine generator installed at the facility.
The main compliance conditions associated with the facility are that: (i) it operate as an instantaneous run-of-the-river facility and there be no storage of water upstream of the facility. The producer is required to install and maintain stream gauging stations for the purpose of measuring the stage and flow of the river; and (ii) the FERC licence requires a minimum flow of 160 cubic feet per second be released downstream of the dam at all times. The minimum flow is required for fisheries and water quality and was based on recommendations from applicable regulatory agencies. A portion of this flow, however, is first passed through the 80 kilowatt Flygt turbine before being discharged back into the stream. The remainder is passed directly over the spillway. In the event that the Flygt turbine is not available, a by-pass gate is opened to pass the minimum flow.

Avery Dam Facility

The facility is a 260 kilowatt hydroelectric generating facility located on the Winnipesaukee River in the City of Laconia, New Hampshire. The facility was constructed in 1985 at an existing site that was used for power generation and consists of a dam, intake structure, powerhouse and tailrace. The generating equipment includes two Flygt submersible turbine/generators.