Nestle’s Fawdon-based confectionary factory has installed a 200 kW power generation unit that converts leftover chocolates and residual raw material used for making confectionaries into electricity. The unit is based on anaerobic digestion that generates methane gas from decomposition of waste products.
The digester and electricity generation unit have been installed by Clearfleau, a company that manufactures “plants that treat effluents and co-products from dairy processing, food manufacturing, drinks, bio-fuels and other industry sectors.” The unit has been installed through financial assistance from the Waste & Resources Action Programme initiated by the government to promote anaerobic digestion.
The plant uses residual starch, unsold or rejected chocolates, and other confectionaries in order to produce methane post decomposition and generate electricity. It converts about 200,000 litres of feedstock and 1,200 tonnes of residues per day. The power generation unit produces enough electricity to supply about 8% of the factory’s total power requirement, which, in turn, saves about £100,000 every year.
Cleantechnica.com