On each of the three wastewater treatment plants of the city of Ulrichstein (Bobenhausen II, Rebgeshain, Helpershain), a photovoltaic system is going to be installed. This will not only save electricity costs due to the high power consumption of the facilities, but also actively support the energy transition. As part of the operations management work, IWR GmbH was tasked with drafting an award proposal. Klaus Schleicher Engineering from Eichenzell was awarded the contract. The installation of the photovoltaic systems is scheduled to begin at the end of March.