"To the Berliner Wasserbetriebe ecological aspects play a just as important role as economical and social issues do. This especially refers to the sustainable use of water ressources. Moreover, we are anxious to contribute to the protection of our environment by taking a stand for more energy efficiency and an increasing amount of energy supply provided by renewable energy resources. Therefore, we are glad to join the network "NetzwerkE", launched by the Berliner Energieagentur. Using the platform of the network as a place of knowledge transfer we, together with other partners of the NetzwerkE, elaborate on innovative solutions of energy-efficient utilization of sewage."