First opened in 1952, the airport was initially served by five airlines. The airport underwent a massive $1 billion rebuilding and expansion which was completed in 1992 and was one of the most innovative in the world, dubbed the "airport of the future" by the New York Times, and helped to pioneer modern airport design with its X-shape to reduce distance between gates, underground tram to transport passengers around the airport, and array of shopping options, all of which were cutting-edge at the time. In 2021, the airport became the first in the world with its own microgrid, which provides power to the entire airport with natural gas and solar power. The airport is currently undergoing a $1.39 billion renovation which will include a new terminal for check-in, security, and baggage claim adjacent to the gates. The renovation will eliminate the need for the tram and increase the number of parking spaces. First announced in 2017 with an estimated completion in 2023, the project was delayed due to the coronavirus pandemic. It resumed in 2021 and is now projected to open in 2024.