The Prometheus system from Nexus Technologies will provide users with a practical low cost implementation of a smart home. Our smart home design will allow users to control the lights of their house from either a local computer, or any computer connected to the internet. The building controller determines what device the user intends to control by the data received and sends control signals to the Power Line Communication Modem (PLCM). The control signals are processed by the PLCM and sent through the electrical grid. These control signals are then recovered from the electrical grid by another PLCM located near the corresponding light that is to be controlled