By David Wichner | Tucson.com
Chris Knutson was excited at the prospect of installing solar panels on his Vail home to do his part to help save the planet.
But Tucson Electric Power turned down his application because there was already too much rooftop solar on his neighborhood power circuit.
TEP has been rejecting some new applications under new state rules governing how rooftop solar systems and other renewable-energy systems get connected to local utility grids.