Provision of services in the fields of building automation, technical building equipment (TBE), as well as energy and operational optimization, including planning, consulting, project planning, and concept development in connection with renovations, modernizations, and retrofits, including energy monitoring, energy analyses, and energy consulting, taking on mandates as a general contractor (GC) or turnkey contractor (TU) as well as providing related planning, coordination, and execution services. Can establish branches and subsidiaries domestically and abroad and invest in other companies domestically and abroad, as well as conduct all business that is directly or indirectly related to its purpose. Furthermore, it can acquire, encumber, dispose of, and manage real estate domestically and abroad, as well as provide financing for its own or third-party accounts and issue guarantees and bonds for subsidiaries and third parties.