E.ON UK is a leading energy supplier with around 8 million electricity and gas customer accounts. Through its retail business, E.ON's Energy Solutions, it supplies energy to homes as well as small-medium-enterprises and industrial customers across the country.

As a trusted energy partner, it is also helping its customers to save energy. E.ON offers maintenance and consulting services for energy efficiency and is partnering a number of U.K. cities to help them reduce their carbon footprint. E.ON offers expert advice, installs microgeneration and fits efficiency measures that have a real impact.

E.ON UK is also the market leader in combined heat and power and will soon operate the one of the world's largest CHP plants at Grain, in Kent.