Ammiano spins rooftop wind turbine idea in S.F.

Ammiano spins rooftop wind turbine idea in S.F.

SAN FRANCISCO - A San Francisco supervisor wants to give residents of Bernal Heights the opportunity to harness wind for energy by allowing wind turbines on rooftops to rise beyond existing area height limits.

The relatively new and untried practice of erecting wind turbines on rooftops to generate electricity may be catching on in San Francisco.

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