This article presents in detail the potential use of boron in energy systems. Boron and its compounds are considered as most promising candidates to be used as hydrogen storage and production material. Therefore, the importance of boron increases for hydrogen and fuel cell energy technologies. Hydrogen can be produced by sodium borohydride giving no harmful by-products. Boron is also a potential engine fuel and engine fuel additive due to its high combustion ability. In thisarticle, mechanism and principles of boron-using energy systems, their advantages, and recent developments are reviewed.