A system and method for generating an optimized operating schedule for a plurality of heterogeneous wireless network appliances managed by a gateway device in a closed area network is disclosed. An amount of energy consumed by each network appliance as well as preassigned operational priority values assigned to each network appliance per time slot over the designated time period is considered. A plurality of proposed operation schedules are iteratively generated, wherein each proposed operation schedule selectively assigns the network appliances to operate at various time slots based on their assigned operational priority values. An optimized schedule is selected which has a determined lowest aggregated total utility cost and a greatest aggregated operations value for the network appliances in the subset. The selected optimized schedule is then implemented by the gateway device to manage operation of the network appliances in the closed area network.