The electric supply of energy is one of the cleanest ways to transport and use energy over long distances. Toward the further development of this area of technology whose importance is pivotal for energy policy, in this research field   new waysare explored to generate electricity using wind and solar energy, as well as stationary and mobile applications of renewable energy. These include efficient techniques for consumers and lighting, energy storage systems for land vehicles and smart grids, as well as applications on ships and aircraft.