Rockford Solar Partners, a renewable energy development joint venture between Elgin, Ill.-based Wanxiang America and New Generation Power in Chicago, received both U.S. Energy Department and Federal Aviation Administration environmental approval to start building the country’s largest commercial airport-based solar farm to be located at the Chicago Rockford International Airport. Rockford airport was picked for the 20-megawatt solar project because it offers 70 acres to install the...