ANNOTATION: This report discusses opportunities for biomass energy in southwest Idaho, looking at the amount of biomass available and potential costs and economic feasibility of harvesting small-diameter trees. Biomass in this report is classified into three different potential sources that include tops, limbs and small stems (slash) generated from harvesting larger commercial timber, the volume generated from thinning younger stands and finally traditional primary manufacturing processes that generate chips, shavings, and sawdust.