Read Article Solar developers won approval Monday night for a 20-megawatt, 101-acre solar array in Lewiston that will use 1219 Sabattus St. as the main entrance. Daryn Slover/Sun Journal LEWISTON — Old Mill Solar LLC won Planning Board approval Monday night for a 101-acre, $29.1 million solar array off Sabattus Street and the company hopes to start prepping the site this fall. “We’re excited about the opportunity for solar in North America as well as here in Lewiston,” said Jon Gravel, vice president of North Light Energy, one of the two project partners. “It’s a quiet neighbor, and I think a great project and opportunity for the city of Lewiston.”