(Chris Detrick | The Salt Lake Tribune File Photo) Mayor Jackie Biskupski speaks during a press conference on top of the Salt Lake City Public Safety Building Tuesday May 10, 2016. Through the new initiative, Subscriber Solar, the city will nearly double the amount of sustainable energy powering government operations by the end of 2016. Mayor Biskupski has set a 2020 goal to have 50% of municipal operations powered by renewable energy, and 100% by 2032.