In 2013, Greensburg, KS — a town of less than 800 residents about 100 miles from Wichita — became the first city in the United States to go 100 percent renewable, powering their homes, businesses, and municipal buildings via wind power. In 2014, Burlington, VT joined Greensburg, becoming the largest city in the United States to be powered by renewable energy sources. A year later, Aspen, CO, joined the coalition, becoming the third city in…