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SKYSTREAM Wind Turbines - On GridSkystream 3.7 developed by Southwest Windpower in collaboration with the U.S. Department of Energy National Renewable Energy Laboratory is the newest generation in residential wind technology. Skystream 3.7 has a 1.9 kW rating and is the first fully integrated small wind generator specifically designed for the grid-connected market. Skystream 3.7 is designed for homeowners looking to reduce or eliminate their monthly electric bills. Skystream 3.7 is a down-wind (wind hits the blades on the downwind side of the tower) direct drive (gearless or no transmission) permanent magnet wind generator. Skystream 3.7 uses an innovative 12-foot diameter rotor and produces approximately 400 kWh per month in a 12 mph average wind. Requires 8 mph for start up 110 mph maximum.