Development, maintenance and marketing of renewable energy plants. Acquisition, management and sale as well as trading of real estate and provision of services in the real estate sector at home and abroad, planning, design and implementation of concepts, management of own and third-party assets as well as consulting and provision of financial and trust services on own and third-party account at home and abroad, holding of participations (in Switzerland excluding transactions subject to the Federal Act on the Acquisition of Real Estate by Persons Abroad). The company may establish branches at home and abroad, participate in other companies or merge with them, and acquire, manage and sell properties (in Switzerland excluding transactions subject to the Federal Act on the Acquisition of Real Estate by Persons Abroad).