The Newton Aycliffe-based firm acquired its first such vehicle in September last year (see link below).
The biomethane-powered trucks will be in operation six days a week, with refuelling carried out on site at the Newton Aycliffe facility. They will collect food waste from customers, including pubs, restaurants, schools and supermarkets, across the North East.
Adam Warren, director of Warrens Group, said: “By powering our own fleet on the biogas it collects, we are demonstrating that when it comes to sustainability, we really do practise what we preach.
“We believe that if big business and industry fuelled HGVs on gas made from renewable sources, carbon emissions would be almost eliminated.”
Pictured, left to right, are Warrens Group directors Antony Warren, Ian Bainbridge and Adam Warren.