Sweet sorghum is a great energy crop that shows the benefits to ecosystems, energy and economics, being a valuable source of energy of the category 1st, 2nd and 3rd. bioethanol generation. Purpose of the paper is to study the chemical composition of sweet sorghum stalks depleted in carbohydrates with applications in obtaining ethanol. It shows appreciable compositional values of free sugars, starch, cellulose, hemicellulose and lignin. All these components can be easily made available as fermentable carbohydrates leading to the production of products with high economic value (bioethanol).