To turn cow pats into energy, the slurry needs to be processed through anaerobic digestion. During this process, organic matter, including cow pats, are broken down to produce biogas and bio-fertiliser. This process takes place in a sealed, oxygen-free tank called an anaerobic digester. The end product is biogas. Once this biogas is cleaned and ready for use, it’s taken to a combined heat and power (CHP) unit, where it’s used to generate renewable energy that can power homes and businesses.
The end by-product is nutrient-rich, free fertiliser, that can be put back on the land to help nourish the soil, in turn helping to grow the grass that feeds the cows.