Bart Lake, Alaska
This scheme is located 16 miles south of the City of Juneau, Alaska, USA. The nature of the site means that it can only be accessed via air or sea, making visiting the site often a difficult task.
The scheme is fed from a 250-acre lake before travelling down a 2350m pipeline then entering into the turbine house.
Gilkes produced a bespoke vertical 6-jet Pelton turbine for the project, one of the largest machines in the company's history.
The Gilkes turbine is capable of producing 15.4MW of renewable electricity, which is then transferred to the national grid by a 3.5 mile over head cable. This project makes Juneau one of Americas greenest cities - able to provide for all of its own needs and more with renewable power.
The project was not without its difficulties. Corry Hildenbrand, Project Manager for Alaska Electric Light & Power commented: "This was a tough one; it's definitely a world-class project. The challenges were many. Steep terrain, wildlife concerns and bad weather combined with a location so remote that much of the equipment, workers and supplies had to be flown in by helicopter."
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- Location= Alaska, USA
- Head = 293m
- Flow = 6.37 m³/s
- Turbine type = 1435 P346 Vertical 6 Jet Pelton
- Speed = 60Hz 450rpm
- Output power = 15.4 MW