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The obligations on municipalities and cities around the world to lower their CO2 and to increase their energy efficiency while still maintaining reliability are increasingly pressing; however, district energy is proving to be a solution to this thorny dilemma. District energy can play a key role in building smart, self-sustainable cities. Urban areas are home to the majority of the world’s citizens, meaning that the fight against climate change will be either won or lost in cities.
The German SurPlusHouse includes photovoltaic on all walls (also on the north side as a system was chosen that can produce electricity from diffuse radiation as well) and a heat pump for heating, domestic hot water and cooling. The building is very compact and results therefore and because of the vacuum insulation in very low transmission losses.