Vattenfall is one of Europe's largest generators of electricity and largest producer of heat. Vattenfall main products are electricity, heat and gas. In electricity and heat, Vattenfall works in all parts of the value chain: generation, distribution and sales. In gas, Vattenfall is active in sales. Vattenfall also conducts energy trading and lignite mining. Vattenfall has a strategic interest in marine renewables as a potential future new source of renewable energy. Since 2006, Vattenfall’s R&D business unit has been investing in ocean energydevelopment with a dedicated team of engineers and analysts.