Owned by Distributed Sun’s Solar Energy Investment Company (SEIC), sunONE, the solar system at Hilton Hotel BWI Airport generates nearly 60 megawatt hours of electric power per year, and over 2 gigawatt hours over its lifetime. The solar power from Distributed Sun costs the Hilton less per kilowatt hour generated than the electricity it buys from the grid, and under contract terms that guarantee savings for property manager PMHS to grow each year, compounding for 20 years.