Siemens Gamesa Renewable Energy is a holding company. Through its subsidiaries, Co. is engaged in the business of renewable energy sources, primarily wind power but also including solar energy where its acts as a supplier and manufacturer of technological products, installations and services. Co. is organized along the lines of: promotion, construction and sale of wind farms, engineering, design, manufacture and sale of wind turbines, manufacture of thermic and photovoltaic solar components, promotion and sale of photovoltaic solar farms. Co. also participates in both Spanish and European working groups aimed at establishing priorities for its sector's research & development work.