swift wind turbine - quiet rooftop windpower
Scottish company,Â Renewable DevicesÂ designs and distributes what they say is â€œthe quietest rooftop wind turbine currently available.â€ The small footprint, Swift Wind Turbine, is designed for both commercial and residential use.
The 7â€² diameter turbine produces 1.5kW @ 14 m/s, or roughly 2,000 kWh per year (roughly 20% of average home use) and requires about 2â€² of roof clearance.
Commercial installations can consist of multiple units.Â Wind energy is dispersed along the blades to outer ring which acts as a â€˜diffuserâ€™ creating less noise.Â U.S. based,Â Cascade Engineering, will manufacture the turbines blades and assemble all the units sold in the U.S.
Installed, this turbine will run you $10,000 to $12,000.
find dealer locations in the U.K. and U.S. @swiftwindturbine.com