in biomass, what is the term used to describe the type of organic material used to produce energy
â¢ Solid Biomass â also known as âfeedstockâ, which are solid or compressed pieces of organic matter in the form of pellets that release their stored energy through combustion and burning. Solid biomass or feedstock materials include: Wood & wood residues such as trees, shrubs, sawdust, pellets, chips and waste wood.