In multi-site retail environments, energy is wasted when usage policies don't take into account differing circumstances at individual locations. Honeywell has developed a solution that can be tailored to specific geographies and footprints and integrated with other databases. Then they capture and analyze real time data, using them to create significant improvements in site by site energy use. It can even make a difference in intrasite energy efficiency. For instance, multi-screen movie theaters are able to adapt heating and cooling to the size of the audience in each theater, as well as to changing weather conditions. To support its high profile environmental initiatives, Wal-mart uses the system to help achieve $100 million in energy savings annually.