Electricity has long been the most valuable technical energy carrier and will remain indispensable in the distant future. The global demand for electricity is constantly growing. This book presents the development of electrical energy supply, taking into account both the societal and technical backgrounds. Special attention is given to the proper contextualization of the German energy transition and its key perspectives. It also explains the economic consequences, offers a neutral depiction of the current situation in Germany, and provides an inspiring optimistic journey into the future.