E.ON is one of the UK's leading power and gas companies, generating and distributing electricity, and retailing power and gas. E.ON UK is part of the E.ON Group, one of the world's largest investor-owned power and gas companies.

The company is a market leader in Combined Heat and Power (CHP), providing its UK customers with around 600MW of electricity and more than 1,000MW of heat at 13 sites across the country, including operating the existing gas-fired CHP plant at Winnington. E.ON produces enough electricity for around eight million homes through a portfolio of renewable, coal, gas and oil-fired projects.

E.ON has a strong track record in developing, building and operating Sustainable Energy Plants to the highest technical and environmental standards. The company has a portfolio of plants in operation or under construction in Germany, the Netherlands and Luxembourg that are broadly similar to the one proposed at Lostock.