Biochar Production in Biomass Power Plants: Techno-Economic and Supply Chain Analyses

This report evaluates the feasibility of producing biochar in biomass power plants in Washington state through techno-economic and supply chain analyses. The study estimates biochar minimum selling prices under different scenarios, finding a baseline value around $150 per metric ton when accounting for reduced electricity generation in modified systems. It assesses regional feedstock availability, identifying approximately one million dry metric tons of low-cost biomass annually, with costs increasing as additional feedstocks are used. The report also examines the agricultural value of biochar, focusing on yield improvements and carbon sequestration. Yield gains are typically modest, with about 10% increases supported by literature, while higher gains are uncertain. Without carbon pricing or policy incentives, biochar is economically viable for only limited high-value crops. However, under carbon pricing scenarios, biochar becomes more broadly competitive. The report concludes that widespread adoption depends on policy support, market conditions, and improved economics of production and application.