At the Érd wastewater treatment plant, 2 steel decomposition tanks with a diameter of 18.62 meters and a height of 6 meters were built. At the top of the digesters there is an integrated gas storage with a volume of 2 x 370 m3 . The daily biogas production is planned to be 2700 Nm3/day, which will be utilized in a 250 kW CHP unit installed in 2 noise-attenuated containers located in a building. In front of the gas engines, the gas treatment unit ensures the appropriate quality parameters.