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.
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Eon customer satisfaction survey results
|Area of performance||Star rating|
Which? customer score
|Value for money||
|Helping you save energy||
Eon customer score
In September and October 2014 we surveyed 9,404 UK adults, who pay for their household energy, about their experience with their gas and electricity suppliers.
Customer scores are based on overall satisfaction and likelihood of recommending to a friend. This survey is the largest one of its kind conducted in the UK.
For a full round-up of the Which? Switch energy satisfaction survey results, see our customer satisfaction survey results page.
Eon fuel mix disclosure
All energy suppliers have to provide information about the mix of fuels they use to generate energy supplied to gas and electricity customers, together with its environmental impact.
Eon fuel mix
Natural gas: 30.7%
* Wind, hydro and solar power.
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 0800 410 1149 or 01259 220 235.
Tired of poor customer service from your energy supplier? See how customers rated 22 of the UK's gas and electricity suppliers in 2015.
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