The Institut für nachhaltige Energieversorgung (Institute for sustainable energy supply, INEV) works for sustainable supply and efficient use of energy in companies and communities. INEV operates at the interface between university, economy, and society. With the key areas of activity being energy supply, energy efficiency, and district heating, INEV supports companies and communities in developing and implementing concepts and measures for sustainable and efficient use of energy and in the development of new processes and technologies. In addition, INEV offers auditing and certification services.