This clean and efficient process utilising enzymatic pre-treatment for photoreforming polyester plastics (PET and PCL films/nanoplastics) allows us to address two challenges: removing plastic waste from the environment and supplying energy in the form of hydrogen. Chemoenzymatic photoreforming promises a technological solution to converting waste into energy building a sustainable economy model based on a cost-effective approach for solardriven fuel/chemical production using waste plastic feedstocks without high energy and nonregenerative reagent consumptions The process involves enzymes and reusable photocatalysts to produce green H2 with high yields (a 22-fold increase compared to previous 'gold standard' photoreforming) and activities under mild conditions. We also expanded the scope of the enzymatic pre-treatment for photocatalytic CO2-to-syngas production using plastic feedstocks in the presence of a Co-based molecular co-catalyst, where the conversion of in-situ generated CO2 to CO was also observed. Finally, comparative techno-economic analyses for chemoenzymatic photoreforming estimate the H2 production costs to be ₤0.22 kgH2 -1compared to the price of H2 from renewable energies (₤3-9 kgH2 -1 at current market prices): a 13-37-fold competitive advantage that will be enhanced by the recycling value of the byproduct TPA, suggests that this technology already has an opportunity to succeed in the marketplace as a waste-to-energy recycling route, even prior to optimisation of this 'upcycling' by further chemical engineering.