The cooperative aims to promote renewable energy and sustainable energy use through joint self-help, particularly through the production, storage, and trade of renewable energy. Additionally, projects to increase energy efficiency can be supported. The cooperative can supply the generated energy at a price advantage and market any surplus. It can carry out all commercial, financial, and other activities that are related to or suitable for promoting the purpose of the cooperative. It can offer consulting and other services in the fields of renewable energy and energy efficiency to third parties. It can join or support organizations and actions that it feels ideologically connected to. It promotes the exchange of information among members and raises awareness among the population about energy issues through its activities. It can use (roof) areas for the installation of photovoltaic and other systems. It can build, connect, and operate photovoltaic and other systems / build and operate systems for generating or storing renewable energy. By doing so, it makes a concrete contribution to covering the energy demand with regional, renewable energy sources and to the 2000-watt society. The cooperative can buy, sell, and encumber properties.