Renewable wind and solar energy. Future technical development

Germany is an international leader in the development and introduction of renewable energy, i.e. wind and solar (photovoltaic) energy. Both technologies already contribute more than 13 % to national electricity generation. The political support of renewable energies resulted in a variety of different technologies the development of which has not yet been exhausted. The paper describes the state of the art of these technologies as well as selected development tendencies. New technologies can be introduced in a highly developed society only if questions according to their environmental impact are also answered.