Huffington Post, Dec. 20, 2016, by Hayley Miller.
http://www.huffingtonpost.com/entry/the-city-of-las-vegas-is-now-powered-entirely-by-renewable-energy_us_58594291e4b0b3ddfd8ea4e8

"Las Vegas just became the largest U.S. city to rely solely on green energy to power its municipal facilities. All Las Vegas city facilities ― from government buildings to streetlights ― are now running entirely on renewable energy, city officials have announced."