“When you make crisps, you use potatoes that you need to peel. So there is lots of organic waste”
Producing 20 million KWh of renewable gas from potato peel may sound mad. Nevertheless, this was the challenge that Altho-Brets overcame by installing an anaerobic digestion unit next to its crisps factory in Saint-Gérand, Morbihan. Its Director, Christophe Chrétien, gives a detailed account of the new life given to this waste.