The world's first solar-powered airport is in Cochin, India and it pays $0 for electricity

Fed up with their hefty electricity bill, managers at Cochin International Airport in southern India took matters into their own hands. Three years ago, they began adding solar panels -- first on the roof of the arrivals terminal, then on and around an aircraft hangar. Thsuccess of those initial efforts led to a much bigger endeavor. "We wanted to be independent of the electricity utility grid," Jose Thomas, the airport's general manager, told CNNMoney.
Read more: http://money.cnn.com/2016/03/14/technology/india-cochin-solar-powered-airport/index.html?source=Snapzu