On our farm, we invested some years ago in a biogas installation. This means that we can put the chicory roots after the forcing process to good use. When we harvest the endive we end up with about 12 tons of waste roots every day. These roots are chopped up and go to the biogas installation for six weeks. In the digester, the chopped roots are converted from solid form into a liquid mass which produces methane gas, about 30 m³ per ton of chicory roots. The methane is passed into a cogeneration unit with a 100 kW gas motor which generates electricity and heat. The heat that is produced warms the farm, the grading and packaging areas and the forcing rooms for the chicory. The remainder is sold on to third parties. The electricity is mainly used on the farm, and provides about 30% of the energy we need every year.