Copys Green Farm, Norfolk, is home to one of the few anaerobic digesters in the country. Cattle manure and silage from Stephen Temple’s dairy farm and whey from his cheesemaking enterprise are fed into the facility, producing biogas that can be used for heat and electricity production. With surplus energy sold to the grid, by-product ‘digestate’ used as a free fertiliser replacement and the much-reduced cost of disposing manure, silage and whey, this is a shrewd investment. In this case study, Stephen talks about the trials and tribulations of installing and using his new plant...