Four Seasons Hotel first Philadelphia business to install energy-efficient microturbines. To gain control of energy costs and reduce greenhouse gas emissions, the luxurious Four Seasons Hotel Philadelphia installed three Capstone C65 ICHP MicroTurbines®. The natural gas microturbines are located on the roof of the five-star hotel. Within the first two months of operation, the hotel reduced its energy cost by more than US$80,000. The microturbines’ combined heat and power (CHP) technology allows the hotel to generate nearly 200kW of electric power, which fulfills 30% of the hotel’s overall electricity needs. Heat from the microturbines is used to heat water for laundry and other hotel operations. The energy-efficient CHP system provides 100% of the building’s day-to-day domestic hot water and satisfies 15% of its heating needs. The project is expected to reduce the hotel’s annual energy costs by 30%.