Active House is a concept developed by a large collaboration of actors from the automation, power, telecom, white goods industry and research institutes. The frame is the Stockholm City’s Royal Seaport city development area which focuses on sustainable development and extensive CO2 reductions. The residential building is called an “Active House” since it has active interaction between the electricity consumer and the utility. The active interaction aims at reducing utilization of electricity production with high CO2 emissions and includes customer-controlled post-shift and reduction of the consumer’s electricity loads and local electricity production.