Providing services in the field of energy supply. Active in the areas of solar and photovoltaic systems, battery systems and energy storage, heat generation and heating systems, sanitary systems, building technology, building-related measures, roof renovations, as well as charging infrastructure for electric mobility and associated control and regulation technology, and provides in these areas in particular consulting, planning, engineering, project management, installation, commissioning and maintenance services as well as sales, assembly, operation and leasing of corresponding systems, components and systems. Can establish branches in Switzerland and abroad, participate in other domestic and foreign companies, acquire or merge with similar or related companies, and enter into all transactions and conclude contracts that are suitable for promoting the purpose of the company or are directly or indirectly related thereto, furthermore acquire, manage, encumber and dispose of real estate, intellectual property rights and licenses of all kinds.