National Public Radio: Eric Frumin (right) stands in front of his solar panels on the roof of his Brooklyn home alongside architect David Cunningham (left) and AeonSolar's Allen Frishman (center).
Robert Sauchelli doesn't have a solar panel, but he's all for the idea - before he retired, he devoted 21 years to energy efficiency work at the Environmental Protection Agency. To show his support, Sauchelli has been paying an extra 7.4 cents per kilowatt-hour to a clean power company, called Green Mountain Energy, through...