Consulting, construction and installation of and trading in solar and photovoltaic systems, heat pumps and other heating systems as well as power generation systems. Additionally, provides organizational and planning services as well as works of all kinds in this sector. May establish branches and subsidiaries in Switzerland and abroad and participate in other companies in Switzerland and abroad, as well as conduct all business that is directly or indirectly related to its purpose. Furthermore, may acquire, encumber, sell and manage real estate in Switzerland and abroad, also arrange financing for its own account or for the account of third parties, and provide guarantees and sureties for subsidiaries and third parties.