Biochar is a circular product made from biomass. Based on the biomass it can have different properties and effects. Biochar can be used in for example, agriculture and climate mitigation, and its value comes from the circular properties. Circular economies have a lot of different stakeholders and for the product to be viable they need to cooperate closely. The value chain surrounding biochar is still emerging and there are challenges and opportunities that the stakeholders face. These include the lack of regulation concerning biochar and its production. For the biochar value chain to develop further, cooperation is needed between the firms and policymakers.
Puhakka et al. (Wed,) studied this question.