S1 Supporting Information Ultra-Low Carbon Emissions from Coal-Fired Power Plants through Bio-oil Co-Firing and Biochar Sequestration Qi Dang a,b , Mark Mba Wright *,a,b , Robert C. Brown a,b a Bioeconomy Institute, Iowa State University, Ames, Iowa 50011, United States b Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States *Corresponding author contact information: 2078 Black Engineering Building, Iowa State University, Ames, Iowa 50011, United States; Phone: 515-294-0913; Email: markmw@iastate.edu. Summary Number of pages: 19 Number of tables: 10 Number of figures: 4 Contents S1. Power generation process model S2. Techno-economic analysis model S3. RSM results of BCF co-firing power generation process model S4. Life-cycle greenhouse gas emissions of the biochar combustion scenario S5. Techno-economic analysis results Tables Figures References