clipped from: www.nytimes.com   
Bringing Wind Turbines to Ordinary Rooftops


Kenneth Benefiel has a Swift turbine on his home in Conklin, Mich.


WIND turbines typically spin from tall towers on hills and plains. But in these green times, some companies hope smaller turbines will soon rise above a more domestic spot: homes and garages.



An Energy Ball turbine.


The rooftop turbines send the electricity they generate straight on to the home’s circuit box. Then owners in a suitably wind-swept location can watch the needle on their electricity meter turn backward instead of forward, reducing their utility bills while using a renewable resource.


One new model, the Swift Wind Turbine, is designed to do its job quietly, said Dave Anderson, co-director of Renewable Devices in Edinburgh, which has partnered with Cascade Engineering in Grand Rapids, Mich., to offer the turbine in the United States.