Lignocellulosic biomass consists mainly of agricultural and forestry residues which are considered to be the most abundant, economical and substantial feedstock for renewable energy production. Therefore, it has low cost and does not compete with the food chain and animal feed. Lignocellulosic biomass includes high amounts of carbohydrates, cellulose, and hemicelluloses, which can be converted into various forms of energy such as bioethanol, biobutanol, biohydrogen, and biogas. Before hydrogen and alcohol production, pre-treatment methods should be applied to disrupt the complex structure of lignocellulose and convert the carbohydrate polymers into fermentable sugars. In this study, sugar extraction was performed by implementing different pretreatment methods to sunflower straw. The most suitable pre-treatment method was determined. Based on the sugar content of hydrolysate, hydrogen, ethanol and butanol production potentials were discussed. Case studies showed that the best alternative is alcohol production by considering theoretical energy potential, portability, economic and environmental effects.