At the Békéscsaba 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 2640 Nm3/day, which will be utilized in a 250 kW CHP unit installed in a sound-absorbing container. In front of the gas engines, the gas treatment unit ensures the appropriate quality parameters.