This thesis develops an automatic lighting supervisory system (ALSS) which integrates the broadband power line communication (BPLC). The microprocessor, power line communication module and other hardware/firmware are applied in the ALSS to execute the optimal electric energy and lighting control to improve the energy usage efficiency. The ALSS consists of energy control module, BPLC module, and terminal control center. Energy control module provides the functions of electric power measurement, on/off control and lighting control. Furthermore, bidirectional communication between energy control unit and control center is possible via the usage of BPLC communication module. In this thesis, a terminal control center supports the functions of monitoring, recording and alarming. Also, it can allow users to adjust the setting values of the energy control module. Finally, the proposed ALSS is installed to a real lighting system to verify its effectiveness and value.