Abstract
Woody biomass, in the form of firewood and charcoal, is the main energy source in the Sudan. Agricultural residues in this country are assessed and their use as energy sources is investigated. Cotton stalks are produced in two large agricultural processes and have been used for this purpose. The conversion process of cotton stalks to usable energy is discussed. We also present the results of surveys which were conducted to assess user acceptance of the new fuel. Encouraging results were obtained. Briquetting of carbonized cotton stalks was found to provide an environmentally sound and socially accepted fuel and also solve a waste-disposal problem.