a method for optimizing energy efficiency in a manufacturing process includes monitoring power consumption of each of a plurality of manufacturing entities of the manufacturing process using a power metering device assigned thereto ; collecting , from the power metering devices , a first data stream that includes information about the power consumption ; collecting a second data stream that includes information about the manufacturing entity and process ; determining an optimized product routing of products to be manufactured by the manufacturing process from one manufacturing entity to another manufacturing entity , based on the collected first and second data streams , by simulating different product routings and determining the optimal product routing with respect to the overall energy consumption of the manufacturing process ; and adjusting , via a manufacturing control system , the manufacturing process based on the optimized product routing .