East Rochester School is partially powered by the sun, thanks to a rooftop solar array recently installed by ReVision Energy. The $250,000 project was financed through SunRaise Investments at no upfront cost to the school district. Local investors will own and operate the array through a Power Purchase Agreement (PPA). The 86.8-kilowatt solar photovoltaic array became operational in September. It will generate approximately 81,345 kilowatt hours annually, providing 44% of the elementary school's electricity needs.