Biomass is any type of organic matter that has its immediate origin in the biological process of living organisms, such as plants, or their metabolic waste; the concept of biomass includes products of both vegetable and animal origins. Biofuels are alcohols, ethers, esters, and other chemical products that come from organic compounds of cellulosic base obtained from wild plants or crops, which can replace, to a greater or lesser degree, the use of fuels destined for the production of electricity or for transportation. Without considering co-emissions from deforestation, biodiversity issues, and impacts on food and water security, the biomass resource potential could deliver a considerable amount of the world’s primary energy demand up to 2095. The cellulose biomass allows the generation of cellulosic bioethanol, so waste from sawmills can be used, and forestry can be reoriented and expanded to diversify the use of forests and protect them from their clearing for agricultural and livestock uses.