Italy’s Milano Fiera trade fair facility announced that it will be getting a major eco update in the form of the world’s largest solar rooftop solar array! The massive photovoltaic system will cover 2.9 million sq ft of the roof, and carry a peak capacity of 18 megawatts. Due for completion in 2010, the project stands to snag the world title from Zaragoza, Spain’s General Motor’s factory, which currently holds the record for largest rooftop solar plant at 12 megawatts...more.