Financing is the first and final word on solar projects. And in these straitened economic times, one company in San Francisco’s Bay Area is aiming to spark a rooftop solar revolution–one tile at a time.

Solar Mosaic, based in Berkeley, will this week unveil its pilot community PV program in neighboring Oakland. Instead of turning to expensive lending rates at major banks, Solar Mosaic’s financing adopts a crowd-sourcing model through the sale of “tiles,” each worth $100. Keep reading →