Being on a mixed farm with pretty high energy consumption, we decided, when we were building our new dairy barn, to fit a 9.7 kW microdigester. This means we can use the fresh manure from the cows to generate some of the energy needed. The manure is collected and digested in the microdigester. This releases biogas which is burned in a gas motor. This motor drives a generator which produces electricity. This supplies the farm with about 60,000 kWh of electricity a year, or 75% of our annual consumption. The digested manure or digestate is used to fertilize the leeks. The digestion process makes the manure easier for the plants to uptake, which helps the leeks to grow better.