The book 'SOLAR ENERGY UTILIZATION' is a research based on evaluation of performance of a solar tunnel crop dryer (STCD) in drying of two African Indigenous Vegetables (AIVs). A solar crop dryer utilizes the energy of the sun and hot air mass to dry agricultural products and prepares them for either proper storage to be used during dry seasons or processing, or even export.Solar energy is considered as a cheap and viable method of food crop drying in the African continent given the huge potential of solar energy throughout the year.