Beyond Tomorrow
http://www.beyondtomorrow.com.au/stories/ep19/turby.html

Turby could turn electricity generation on its head. It’s a personalised system which can power a whole house – from the top of that very building. Turby is a revolutionary vertical axis wind turbine designed for use in an urban or built up environment. Unlike windmills or wind generators, Turby is highly efficient even in low winds and can power up a house with ease – and when the wind doesn’t blow you switch back into the regular grid.