Energy-Saving Guides



Switch to a Green Provider

You are here

E.ON: Reviews, Energy Tariffs, Login & Contact

E.ON are the UK's third largest energy supplier with around 7 million customers. Despite their huge market share, E.ON customers are some of the least satisfied of all the Big Six, with scathing reviews and terrible ratings on online review websites.

E.ON at a Glance

  • Electricity: 16.6% renewable
  • Based: Coventry
  • Founded: 1989 (Formerly Powergen)
  • Customers: 7 million (2018)
  • UK's 3rd largest energy supplier
  • Invested £2.4bn in renewable energy
  • 3rd most complaints of Big Six
  • Terrible reviews on Trustpilot (0.8/10)
  • Only 1/3 of customers would recommend

E.ON Customer Reviews


Through 2014’s first quarter (Jan-March), customers sent E.ON 239,440 complaints. Of these, 232,014 complaints (87.8%) were resolved in less than a day. Most complaints are about customer service (42%), though almost a third (29%) were about bills and letters. The remaining complaints concerned metering (13%), payments (12%) and systems (2%). Compared to other Big Six suppliers, E.ON is the quickest to resolve complaints within the next working day.

What customers say about E.ON

E.ON is helpful when things go wrong

“When our boiler stopped working, I was happy to discover that we were eligible for a new one.”

The E.ON Age UK tariff is competitive

“As a pensioner, I find the E.ON Age UK two-year fixed tariff relatively competitive compared to the other suppliers.”

E.ON customer care is responsive

“So far, my phone queries get answered and when they can’t, E.ON customer care investigates further and usually gets back to me.”

Selected negative reviews about E.ON

E.ON is better at being paid than paying back

“I thought direct debit would be a convenient way of paying my energy bills but when I moved out and realised that I was in credit with E.ON, it took three months before I was paid back what I was owed.”

E.ON boiler inspection hours are incompatible with a working life

“When I needed my first boiler inspection I gave E.ON dozens of dates that suited but kept getting offered dates and times that are incompatible with work. Few people can stop working in the middle of the day for a boiler inspection.”

About E.ON

Originally, E.ON was an entirely public utilities company: Powergen was founded in 1989. It was partly privatised in 1991 (60%) and the remaining shares were sold to private investors in 1995. German company E.ON bought Powergen in 2002. Two years later, it was rebranded as E.ON UK.

A member of the German group E.ON, E.ON UK employs 9,400 people and made £5.8 billion in revenue (2017). The company supplies electricity and gas to over 7 million residential and business customers and also offers boiler replacement, solar panels, battery storage and electric vehicle charging services.

E.ON Fuel Mix

E.ON’s fuel mix relies on natural gas (53.5%), but offers a fairly low proportion of renewable energy (16.7%).

Suprisingly however, E.ON is a major investor in renewable energy infrastructure and have invested more than £2.4 billion in wind farms and biomass power stations across the UK.

As of 2018, E.ON owns and operates a total of 16 onshore and offshore wind farms and two biomass power plants.

E.ON Tariffs & Prices

The following table shows average E.ON energy prices (based on an annual usage of 3,200 kWh for electricity and 13,500 kWh for gas) by tariff as of June 2014. Standard comparison rates place E.ON in an average position when it comes to electricity and gas prices (halfway between the cheapest and the most expensive dual-fuel plan), and early exit fees are relatively low, when they exist at all.

Tariff Conditions Average cost duel fuel
E.ON Energy Plan - Variable tariffs
- No contract end date or renewal
E.ON Energy Fixed 1 Year v6 - Fixed price for 1 year
- £10 exit fee (£5 per fuel)
E.ON Energy Fixed 2 Year v5 - Fixed price for 2 years
- £20 exit fee (£10 per fuel)
Age UK Fixed 2 Year - Fixed price for 2 years
- No exit fee
- Available to people over 60

Contact E.ON

E.ON Telephone Numbers

Depending on what topic customers need assistance on, E.ON has several contact numbers available. Operating hours are good compared to most other Big Six suppliers.

Topic Contact number Operating hours
Account enquiries 0333 2024 606
0333 202 4610 (new customers)
0345 303 3040 (prepayment)
Mon-Fri, 8am-8pm; Sat, 8am-6pm
Moving home 0333 202 4643 (prepayment)
0345 303 3020 (credit meter)
0345 366 5976 (smart meter)
Mon-Fri, 8am-8pm; Sat, 8am-6pm
Complaints 0333 2024 606 Mon-Fri, 8am-8pm; Sat, 8am-6pm
Energy efficiency 0333 202 4650 Mon-Fri, 8am-6pm
National Gas Service Emergency Line 0800 111 999 24/7

Contacting E.ON by mail

Letters to E.ON can be sent to the following address:

PO Box 7750

E.ON Account Login

E.ON customers can access their bills and account online on the company's website.

To login to your E.ON account, simply click the button below to be redirected to the E.ON login page.

Login to your E.ON Account