Abstract:Ethics provides guidance in problem areas requiring responsible behavior and offers solutions. Especially against the backdrop of far-reaching environmental and social crises, particularly global warming, it is essential that we question the issue of energy supply according to ethical criteria. The energy issue is therefore no longer just a technical or environmental issue, but becomes a question of ethics. Global energy demand is still on the rise, and one of the central themes of humanity is the sustainable supply of energy. Currently, the global energy demand is met almost entirely by fossil fuels, with huge environmental and social consequences. The use of renewable energy sources is therefore of central importance and promises a solution to these problems. However, the use of such sources is far from being the ideal solution and often associated with a number of problems, e. g. high energy expenditure for production, the destruction of habitat for people, animals and plants, the production of toxic waste, and conflicts over land use. Therefore, a solution lies primarily in the formation of a new consciousness which must be marked by two aspects: environmental and social justice and environmental responsibility. Only when humans are aware of their responsibility towards present and future generations and the entire living environment, the development of a positive future is possible. The Church can make an important contribution to this development by becoming aware of its responsibility and function as a role model, calling for nature as God's creation.