CS3Circular Scope 3
A science-based method and tool for quantifying CO₂e emissions from circular-economy strategies
CS3 is a peer-reviewed method and tool that quantifies the Scope 3 GHG emissions of more than 30 circular-economy strategies implementable within manufacturing companies. Strategy by strategy, it shows how each one performs emission-wise against a business-as-usual baseline — and now what each one costs and saves — helping companies choose the right circular strategies that deliver real Scope 3 reductions for science-based targets (SBTi) and CSRD reporting.
Circular strategies, turned into numbers companies can report
Companies committing to science-based targets hit a wall when using circular-economy approaches: there is currently no standard way to show how a circular strategy affects Scope 3 emissions — and Scope 3 is usually more than 70% of a manufacturer's footprint. CS3 closes that gap. I rebuilt the tool independently of the original DTU software, following the published method, and it is now running — most recently on a packaging portfolio in client work at ReCykla.
Validated in practice
Tested with industry, now in client work
During its development at DTU, the CS3 method was tested with three manufacturing companies, where it modelled Scope 3 GHG reductions of 38–43% against a business-as-usual baseline. Today CS3 is applied in a client engagement at ReCykla.
Manufacturers in the testing phase at DTU.
Modelled Scope 3 GHG reduction versus business-as-usual.
Reporting-ready outputs for science-based targets and ESRS / CSRD.