Ultra Quiet Rooftop Wind Turbine

This is the first quiet rooftop wind turbine that generates electricity by harnessing the power of the wind providing you a cost effective energy source for domestic, community and industrial use.
Photo Credit: Cascade Engineering & Inhabitat

Love the idea of wind power, but can?EUR??,,????'???t imagine that a wind turbine on your property could ever be quiet or unobtrusive? Personal wind turbines are becoming more common, and the Swift Wind Turbine will harness the power of wind with its quiet and unobtrusive design. This unique design uses an outer ring to diffuse air flow from five blades, minimizing noise to a minute 35 decibels – less noise than generated by whisper conversation. With the capability to approximately 2,000 kWh annually, Swift is making small-scale wind power more aesthetically and acoustically appealing.

By installing a wind turbine at your location you can reduce the amount of electricity used from conventional means and reduce your carbon emissions, lower your electricity bills and generally make the world a more beautiful place.

Not only is Swift a quiet turbine, but its design is easy on the eyes and will blend in well on almost any rooftop. The turbine needs just a few feet of mount, at least 2 feet from the top of the roof, and preferably at the highest point. A patented roof mounting system is also designed to minimize noise and vibrations while in operation.
Photo Credit: Cascade Engineering & Inhabitat

Photo Credit: Cascade Engineering & Inhabitat

The specs on the Swift are impressive: blade/ring diameter is 7 feet; rated power output is 1.5kW @ 14 m/s (31.3 mph); annual average power supplied is up to 2000 kWh. But it?EUR??,,????'???s the noise levels that have captured our attention. The developers claim the Swift is the first turbine of its kind to be quiet at any wind speed, meaning less than 35 decibels (dB). For comparison, a pin dropping from 1 cm is 15 dB if you?EUR??,,????'???re 1 meter away, whispering is 40 dB, a normal conversation is 60 dB, and a 100-watt car stereo is 110 dB. As the website explains, traditional turbines generate noise as the air flows along the length of the blade. On the Swift, the outer ring acts as a diffuser as the air flows along the blades and out to the ring, nearly eliminating noise.

Source: Jessica Lehti, Cascade Engineering