Green Fuels Ltd. is the leading supplier of decentralized waste-to-fuel technology / solutions. The company has changed biofuel production from an expensive, feedstock-intensive, and cumbersome operation, to a modular one that can be deployed to close to the feedstock(s), cities, and island communities, or it can be scaled at a central facility as feedstock supplies increase. Green Fuels has equipment running in over 80 countries, producing over 400 million liters of fuel every year, equating to an annual carbon dioxide saving of over 1 million tons. More recently, Green Fuels spin out 'Firefly Green Fuels' has developed a process to process sewage sludge (biosolids) into renewable aviation fuel and plans to scale up its pilot facility to a commercial scale (see www.flyfirefly.uk ).