Designed to produce energy in very low winds, Skystream 3.7™ begins producing power in an 8 mph breeze with full output achieved at 29 mph. Skystream may produce 400 kWh per month. That is 40 - 80% of the electrical needs of most homes. → wind turbine info

Windward ...
"Since installing our Skystream 3.7 in July 2007, combined with conservation measures, we are purchasing about one third to one half of the power that we were in the comparable period a year ago. For an interesting insight into wind power issues and how an individual can help in the big picture, see the article here and photos here - Muffy and Jim Floyd from Maine