The Biomass as Feedstock for a Bioenergy and Bioproducts Industry: The Technical Feasibility of a Billion-Ton Annual Supply (generally referred to as the Billion-Ton Study or 2005 BTS), was an estimate of potential biomass available within the contiguous United States based on assumptions about current and future inventory production capacity, availability, and technology. This follow-up report, U.S. Billion-Ton Update: Biomass Supply for a Bioenergy and Bioproducts Industry (generally referred to as the 2011 BT2), expands on the 2005 BTS to include spatial, county-by-county inventory of potentially available primary feedstocks,price and available quantities (e.g., supply curves) for the individual feedstocks, and amore rigorous treatment and modeling of resource sustainability. This tool allows the user to download BT2 data for selected years, scenarios, crops, and all available prices. The spreadsheet results will display one sheet for each desired resource along with a summary page of the download criteria.