After receiving the Energy Star Partner of the Year Award in 2005 and 2006, Marriott International’s company-wide continuous improvement in energy management helped the organization win the prestigious Energy Star Sustained Excellence designation in 2007. In 2006 alone, Marriott was able to save almost $6 million and reduce its green- house gas emissions by 70,000 tons.
The program included the installation of 450,000 compact fluorescent light bulbs (CFLs), conversion of all outdoor signage to LED and fiber optic lighting, and implementation of energy- and water- efficient laundry systems. Through its reduction in energy consumption, Marriotts efforts represent a 2 percent green- house gas reduction per room
Energy Star: http://www.energystar.gov/ia/business/challenge/