The Mag-Wind by Enviro-Energies transforms “a roof with a 10-foot vertical rise and 30% angle into nearly a 200% increase in the amount of wind energy that is available to be turned into electricity.” Video after the break.

Compared to the same turbine just sitting on a pole, the roof effect increases the power yielded by operation of the wind turbine dramatically.

[via BoingBoingTreeHugger]]