The process involves an audit that includes lifestyle input from the home's occupants. The resulting score uses computer modeling that considers factors such as the house's size, its construction type, insulation and other factors, along with how many bedrooms/bathrooms it has, the type of appliances in the home, and average human behaviors, such as the fact that average U.S. adult takes 5.3 showers a week. The end result is a score estimating how many kilowatt-hours of energy it would take to fuel the house for a year. And for those concerned about their carbon footprint, the score also estimates how many pounds of carbon are released in a year to generate the power fueling the home.Its three components allows people to compare their homes' EPS scores to those of other homes, learn how to take measures to improve their scores, and use the improved performance as a selling point. In fact, the Earth Advantage Institute will partner to link EPS scores to local multiple listing service (MLS) databases and train real estate industry professionals like brokers and appraisers.In the U.S., a cooperative project among a variety of organizations has just resulted in the International Code Council introducing the International Green Construction Code (IGCC), a model code focused on new and existing commercial buildings addressing green building design and performance. The IGCC original Cooperating Sponsors are the American Institute of Architects (AIA) and the ASTM International standards organization, in collaboration with the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), the U.S. Green Building Council (USGBC), and the Illuminating Engineers Society (IES).