In the focus area Water-Energy-Nexus we will have a combined presentation by Timo Paul from Vattenfall and Heinrich Gürtler from the Berliner Wasserbetriebe on the Potential of Wastewater Heat as a Carbon Neutral Source - Benefits of Sector Coupling. Together, they will present a pilot project in which a large scale wastewater heat pump will fuel the Berlin district heating system with carbon neutral thermal energy.