By Ben Winslow, KSTU.

SALT LAKE CITY -- Mayor Jackie Biskupski made an ambitious announcement on Tuesday, a plan to put all city buildings, street lights and even the Salt Lake International Airport on clean energy by 2032.

At a news conference Tuesday, the mayor said she wanted 50-percent of municipal operations powered by renewable energy by 2020. To accomplish it, Biskupski announced the city would be buying into Rocky Mountain Power's new "Subscriber Solar" program.

"Salt Lake City has committed to purchasing three megawatts of clean solar power through the new solar subscription program," she said. "This commitment is the equivalent of 9,000 solar panels."