On the last Partner Engineers AG OFF (Operation fire and flames) we visited the biogas plant Wiggerhof in Altishofen, where approx. 4'700'000 kWh electrical energy, 2'400'000 kWh heat and 13'000 t fermentation fertilizer are produced per year from liquid manure, dung and waste.

Many thanks to the operator Michael Hunkeler, who explained the technology and the process manure -> energy to us with an entertaining, informative guided tour.