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Sweet feedstock for AD

Nestlé’s on-site anaerobic digestion (AD) plant at its Fawdon confectionery factory, near Newcastle, is converting 200,000 litres a day of feedstock into renewable energy.

The plant, designed and built by Clearfleau, has just completed its first year of operation.

Feedstock into the plant includes wash waters and 1,200 tonnes a year of residual by-products and ingredients.

The biogas produced is fuelling a combined heat and power plant, which produces 200kW of electricity, used in the confectionery production process. This is about 8% of the factory’s power requirements, cutting its annual electricity bill by about £100,000 a year.

Previously, production residues from Fawdon, home to Rolo’s and other sweets, were discharged to the sewer or fed to local pigs.

Inder Poonaji, Nestlé head of sustainability, said: “On-site treatment of production residues will help us reduce the wider environmental impact of our business and meet our sustainability goals. By working with Clearfleau, we continue to reduce our carbon footprint and generate value from food production residues.” 

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