This project is located near the town of Zeballos in
British Columbia, Canada. They are designed primarily for energy
delivery directly into BC Hydro grid via. a new 18.6km long transmission
Designed by DTL with computational fluid dynamics (CFD)
software to increase the screen surface area to structure size and
weight ratio as well as to keep the water approaching velocity through
the screens below an allowable value, the 'gear-shaped' intake structure
diverts water to the powerhouses via a 900m tunnel, low and high
pressure penstocks, bifurcations, shut off valves. This intake was
also designed to eliminate sediment and debris from the diverted water.
The main powerhouse operates on the level control of the
lake, and the fish flow powerhouse was designed to operate all year
round to maintain water flow in the creek. The power plants are
normally operated in automatic mode.