Abstract: A simple and efficient process is provided for the preparation of fuel pellets comprised of, in whole or in part, a modified cellulosic material.By contacting a cellulosic material with certain enzymes, such as cellulase, the cellulose structure is modified so that the material flows more easily and therefore less energy need be expended in formation of the pellets. Hence, higher production is obtained by increased input and output to and from the pellet mill. Moreover, the pelletizing die itself is subjected to less abrasion and hence has a longer life.