Development and distribution of renewable energy systems, execution of construction work in this field as well as provision of related services, in particular planning and project management. Can act as general and total contractor, establish branches and subsidiaries in Switzerland and abroad, participate in other companies in Switzerland and abroad, and conduct all business directly or indirectly related to its purpose. Furthermore, it can acquire, encumber, sell and manage real estate in Switzerland and abroad, arrange financing for its own account or for third parties, and provide guarantees and sureties for subsidiaries and third parties.