The $3 million project planned as part of the Electrical and Computer Engineering Building that opened in 2014 was completed this spring, pushing it closer to its ultimate goal of 'net-zero' energy use. URBANA — In April, sunshine began powering about 25 percent of the labs, offices and classrooms in one of the newest high-tech buildings at the University of Illinois. A $3 million rooftop solar array planned as part of the Electrical and Computer Engineering Building that opened in 2014 was completed this spring, pushing it closer to its ultimate goal of "net-zero" energy use. read more