Mass balance concept Mass balance is an ingenious concept that allows our customers and us to switch to renewable raw material in easy steps. We believe mass balance is a necessary strategy for industry to switch from fossil to renewable and recycled resources. We have to take it stepwise as building wasteful, parallel systems would neither benefit the environment nor the economy. Mass balance is about mixing fossil and renewable but keeping track of their quantities and allocating them to specific products. The actual carbon molecules in the product may not be renewable, but through a third-party certificate, the renewable content is verified. This helps us all support sustainable sourcing of renewable raw material and see the actual savings in CO2 emissions. Eventually, all the raw materials will be from renewable sources and every molecule you receive in the future will be from a sustainable source.