According to an embodiment, a thermostat (206) of a heating, ventilation and air conditioning (HVAC) system (160A), the thermostat (206) comprising a controller (110) operable to perform operations that include receiving an energy budget (112) for a site, ...

The purpose of the present invention is to provide an energy management system that works both to reduce energy and to maintain amenity in each building. The energy management system (100) of the present invention is provided with an energy management appa...