Lite större än H-rotorn? Kanske lite i största laget för en liten trädgård?
Everybody loves integrated wind power, like this big turbine at the Bahrain World Trade Center, but does it actually work? Or is it just there to make a green statement? Alex Wilson of Building Green doesn't think much of it, and calls it "folly." There is no question that they do make a green statement, visibly spinning while photovoltaics just sit there. But do they actually do what they say? ...