Sales, brokerage, installation, construction, financing and maintenance of photovoltaic systems, as well as provision of services in the fields of energy economics, building technology and support for domestic and foreign providers, in particular through provision of repair and maintenance services of all kinds, through performance of repairs, delivery of spare parts, sale of products and provision of logistical services of all kinds. Provision of services in the areas of online marketing, web optimization, web design, conception, development, implementation and evaluation of internet projects and internet solutions, as well as trade in goods of all kinds, in particular solar technology. Establishment of branches and subsidiaries in Switzerland and abroad, participation in other companies in Switzerland and abroad, and performance of all business activities that are directly or indirectly related to its purpose. Acquisition, encumbrance, sale and management of real estate in Switzerland and abroad, financing for its own account or for the account of third parties, as well as assumption of guarantees and sureties for subsidiaries and third parties. Acquisition and exploitation of licenses, concessions and rights, acquisition or merger with similar or related companies.