PG&E employees Brad Neff, left, and Gavin Fong install self-generating solar units on the roof of one of Habitat for Humanity's newly-built homes at De Long Terrace in the Outer Mission district. PG&E provided grants to Habitat for Humanity to cover the installation costs and volunteer labor for the "Solar Habitat" program that brings solar power to homes built for low-income families. (photo by Cindy Chew/The Examiner)