E.ON UK

E.ON UK is a British energy company and one of the largest suppliers of energy in the UK, following its acquisition of Npower. It is a subsidiary of E.ON of Germany and one of the Big Six energy suppliers. It was founded in 1989 as Powergen, and was listed on the London Stock Exchange and was once a constituent of the FTSE 100 Index. It has been a subsidiary of E.ON since 1 July 2002.

E.ON was formerly a vertically integrated utility company with interests in electrical generation, electricity distribution in the Midlands region, and in the electricity and gas supply markets. It took a pioneering role in the development of large scale renewables including the construction and operation of the UK's first offshore wind farm at Blyth in Northumberland. It became one of the first in the world, and the first major UK energy company, to significantly alter its structure by spinning off its fossil generation business so it could focus on energy supply, grid development and renewables.