Polska Grupa Energetyczna S.A. is a leading Polish electricity producer. Sales break down by activity as follows: - electrical and natural gas electricity supply (37.4%); - production of conventional electricity (26%). The group is also involved in lignite mine exploration; - electricity distribution network operation (16.6%); - heat production (8.9%); - electricity and fuel consumption from railway companies (8.1%); - production of electricity based on renewable energies (2.4%); - other (0.6%). Sales break down geographically as follows: Poland (99.9%) and European Union (0.1%).