Vattenfall is a Swedish-owned international electricity and heat supplier. In recent years, it has become the fourth-largest generator of electricity and the largest producer of heat in Europe Vattenfall is a public limited company, shares of which are owned by the Swedish government.

E.ON is one of the largest investor-owned energy providers in the world. The company delivers energy to millions of customers and, together with EDF, is the biggest energy supplier in Europe. Employing more than 80,000 people, E.ON also has the duty to establish favourable working conditions for...