Airports use a large amount of electricity every day to keep everything running. Terminals need constant lighting and air conditioning, baggage systems run all day, and security equipment requires steady power. Facilities like ground vehicles, shops, restaurants, and offices also depend heavily on electricity. Because of this large energy demand, airports around the world are looking for cleaner ways to produce and buy electricity. The shift is already happening. Airports are already installing solar panels on rooftops and suitable land. Some are buying electricity from wind farms. Others are using electric ground vehicles and providing electricity to aircraft parked at…