Purpose: Creation of concepts, studies, reports and expert opinions in the fields of energy, ecology, sustainability, building technology, building physics and waste management; as well as provision of corresponding consulting services. Planning and trading in the real estate sector. Trading in devices and materials related to the business purpose. Research and development in the fields of energy, ecology, sustainability, building technology, building physics and waste management. Facility management, consulting, planning and calculations in the fields of heating, ventilation and air conditioning; as well as the preparation of the necessary offer and planning documents and the execution of specialist construction management. Architectural services and construction management. Lighting planning, lighting design and lighting design. Consulting, planning and construction management in the field of stage technology. Building physics consulting, planning and calculations.