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The Sustainability Challenge powered by EDGE and Vattenfall, in cooperation with Urban Impact, is open to innovative minds and companies worldwide. The challenge is to find a solution that combines technology and sustainability to enhance EDGE Suedkreuz Berlin – the new Vattenfall headquarters in Berlin. The aim is to set new standards through the use of sustainable and impactful technologies in the building and by this boost its attractiveness and innovative profile for users as well as for visitors.