Eon is a wholly-owned subsidiary of Eon, a German company. The company is one of the largest suppliers of gas and electricity to homes in the UK.
Eon was formerly known as Powergen, but took on the name of its parent company in December 2007.
Could you save by switching to Eon? Compare energy prices now.
About Eon Group
Eon Group operates in the UK, America, Austria, Bulgaria, Czech Republic, Denmark, Finland, Hungary, Italy, Netherlands, Poland, Romania, Slovakia, Spain and Sweden. It is the world's largest investor-owned electricity and gas company.
Contact number for customers moving home - 0345 303 3020
Contact number for questions about your bill - 0345 052 0000
Contact number for prepayment customers - 0345 303 3010
Contact Which? Switch by phone
You can call us on 01259 220 235.
Tired of poor customer service from your energy supplier? Use our Which? energy satisfaction survey results to help find the best tariff for you.
Tariff updates are provided by Energylinx. Energylinx is fully accredited to the Confidence Code to compare energy for domestic consumers.
Which? Switch provides consumers with a transparent and impartial way to compare energy tariffs and find the best gas and electricity provider for your needs.