To date, Neste has processed over 6,000 tons of plastic-derived feedstocks from Alterra's industrial-scale site in Akron, OH, USA. Alterra primarily uses post-consumer mixed plastic as raw material, partnering with waste management companies for collection and sorting. To prepare the feedstock, the plastic is shredded, dried, and densified before entering the processing system. The company says it uses plastic waste that is not suitable for mechanical recycling.