A little more than a year later in Summer 2017 we constructed a 200kW Anaerobic Digester beside the dairy. This large 'concrete cow' is fed twice a day with a combination of slurry and manure from the cows, and some grass and crop silage. In the absence of oxygen this breaks down anaerobically producing bio-methane. This fuels the on-site generator [not generated] producing electricity and heat. Powering the entire farm, the surplus electricity is once again exported to the grid.