Abstract – Buildings are important contributors to energy
consumption accounting for around one-third of energy
consumed in cities, where large public buildings are the
dominant energy consumers and energy consumption might be
significantly decreased through Building Energy Management
Systems (BEMS). A supervisory and management system for
energy conservation in large public buildings is presented in this
paper, with a PC or a embedded computer system running a
BEMS software designed to connected to distributed energy
metering system, wireless sensor networks, even conventional
building automation (BA) systems. The supervisory and
management software consists of information inquiry, energy
consumption metering, energy efficiency analysis and decision
support subsystems. The system framework is introduced with
development and application of the software described in detail.