An electrical power and data system for group seating arrangements includes a DC power supply for converting an AC voltage input to a DC low voltage output, a low voltage main line and at least one branch line with a power output in communication with the DC output, and an occupancy sensor at a seating area for generating an occupancy signal. The power output of the branch line positionable at the seating area, and configured to supply power to a portable electronic communications device. A switch energizes and de-energizes the electrical power output in response to the occupancy signal, and the branch line, main line, and DC power supply cooperate to provide electronic communications between the portable electronic device and the electronic data network when the DC power supply is energized.