The municipality of Amsterdam is pursuing an active energy policy to be able to realize apartment buildings with an EPC around 0. Klimaatgarant and its partners have taken on this task and have developed a concept that meets this task and also contributes to a healthy and comfortable indoor environment. The shell design has been optimized, minimizing the energy loss of the building. The insulation is excellent and the losses of heat through ventilation and losses of heat from shower water are also limited by recovering the heat. What remains in terms of heat demand is supplied by district heating in combination with heat pumps. This, combined with solar panels, ensures an exceptionally low EPC value.