Electricity, fuels, heating and cooling are areas in which new requirements and opportunities arise almost daily. They are being driven forward internationally and across national boundaries. One example of these changes, which is also highly visible to consumers, can be seen in the fiercely competitive electricity market: major energy supply groups such as E.ON and RWE have been split into renewable and conventional energy companies. The separation is obvious. Decentrally operated power plants are replacing existing large-scale plants, as the sales market for renewable energies continues to grow. In addition, the trend toward digitalization is accelerating further and further. New challenges for the industrialized countries, which go hand in hand with great responsibility towards mankind, arise from the issues and requirements of international climate protection, from the latest turmoil on the oil market and also from Saudi Arabia's avowal regarding the period after oil reserves have been depleted.