Operation of photovoltaic systems and heating systems as well as trade in heat energy and electricity with end customers. The company may establish branches and subsidiaries in Switzerland and abroad, participate in other companies in Switzerland and abroad, conduct all business that is directly or indirectly related to its purpose, acquire, hold, manage, encumber and sell properties in Switzerland and abroad, further provide financing for its own account or for the account of third parties, as well as assume guarantees and warranties for subsidiaries and third parties.