E.ON UK Reviews 

I genuinely wish I could have given 0 stars. Based on my experience, E.ON has been the worst energy supplier I've dealt with.

They unexpectedly closed the account we originally set up without notifying us. They then opened a completely new account under a different name, but we were never given any login details or even told it existed. Charges continued to be added to this new account without our knowledge, so the balance grew while we believed everything was being paid correctly.

When we contacted E.ON, they admitted this was their mistake. Unfortunately, despite acknowledging the error, we were still expected to pay the additional balance that resulted from it. We repeatedly contacted them to resolve the issue, but felt we were being passed from one person to another without a fair resolution.

The financial impact became so severe that we eventually had to move because we could no longer afford the rent. That is the lasting consequence of how this situation was handled.

I have since switched to Octopus Energy and my experience has been completely different. Based on what happened to us, I would never choose E.ON again, and I would encourage anyone considering them to carefully research other suppliers first.

I bought a house that was already supplied by E.ON, and from the very beginning my experience has been nothing but frustrating.

My first bill was incorrect, and I was overcharged. Shortly afterwards, I received a bill stating that my balance was £0.00, so naturally I believed the matter had been resolved.

After sending me a bill showing I owed nothing, they then sent another bill demanding £40, with only 7 days to pay. Less than 24 hours later, I received a payment reminder insisting that I pay immediately, despite barely having any time to respond to the original invoice.

The most concerning part was my interaction with customer services regarding GDPR. I deliberately chose not to provide my personal details because I was concerned they would use them to create an account in my name that I had already made clear I did not want. Instead, I provided the account number, full property address and reference number, which should have been sufficient to identify the issue I was emailing about.

Despite this, they insisted they needed my personal details for GDPR purposes before they could discuss the account. I knew this wasn’t the case, so I gave them fake personal details, they accepted them without question and continued discussing the account. This not only undermined their claim that these checks were necessary for data protection, but also proved my original concern justified as I then got emails saying they had gone ahead and created an account in my name despite me telling them not to.

Having told E.ON on several occasions that I did not want an account with them and asking them to remove my details from their systems, they ignored my request and set up an account anyway. I’ve also repeatedly asked E.ON to remove my personal details and stop contacting me, but they continue to do so anyways. Claimed they needed my details for GDPR, yet they’re now going against GDPR by keeping my details of file when they’ve no right to do so and keep contacting me despite being told not to.

Overall, this has been an incredibly disorganised and frustrating experience, with incorrect billing, contradictory invoices, aggressive payment demands, disregard for my repeated requests, and a customer service process that left me with serious concerns about how my personal information is handled. Customer service team are rude and dismissive, and based on my experience, I cannot recommend E.ON and very grateful I’ve chosen a different energy provider.

Very hard work trying to get a refund and constant messages from different people and I'm only trying to get back my own money that they have overcharged me . avoid this company

We have had a text threatening legal action for allegedly owning money which we strongly deny. We have a dispute for over four years with your company after you inherited years of billing errors from our previous provider Npower. This was caused by corrupt data migration from Npower who used to send six bills a day for different amounts details of which we have sent your company over the last four years . They sent eight bills over a monthly period which was two years of bills .This has been included in the amount you say was transferred over from Npower so your figures are clearly wrong. There has been two responses from your company when we have contacted you about this. One has been we are saying the same thing over and over the second when we challenged this had been we cannot find the information you sent!!!! We are confused here two different responses you have both seen and not seen the information!!!! You have ignored Ofgem guidance on the breathing space guidelines after a bereavement our family suffered when despite being advised of the situation your company issued a default notice. This caused anxiety and distress you offered an apology after we contacted you but why was the notice issued when you knew of our situation . Finally you have falsely accused us of missing payments we have written to you contesting this . We have provided evidence to you over the past four years that we do not owe this money due to the corrupt data from Npower who used. This issue over four years has caused distress anxiety and a deterioration of my physical health. I am now escalating this issue to your CEO and will want formal proposals for compensation. Thank you David McLoughlin

Why would you trust a company that has an unsecure website connection??
I joined two years ago and won't renew

What do you mean this time? I have a catalogue of disastrous experiences since I moved home last year. Suffice to say that they still cannot read my so called "smart meter" (a fine example of an oxymoron, if ever there was one). I am now expecting my FIFTH engineer visit, despite the last two having fitted new meters and assuring me that all was fine and I would receive a call within a week. Needless to say that didn't happen. I called and spoke to Sophia in the complaints department who assured me that she was taking personal responsibility for the case and would phone me back on Monday 22nd June. Yup, you guessed it - no phone call came. Now I've had an email from Isabel asking me the same questions as last year. What do I have to do to get what seems to be a straightforward problem fixed?

My previous review was about a totally inaccurate quote I was supplied with for 6800 kWH electricity usage per annum. I investigated and found that the provided quote was for 1638 kWh. I was not told that, and so I was under the impression that the figure supplied was for what I asked, 6800 kWH. Fortunately, rather than blindly signing up I felt it was too good to be true and worked the figures out myself, and yes, it was too good to be true, wildly inaccurate. E.ON’s reply to my poor review first stated that they were unable to quote for a defined usage, so my question is, if they can’t quote for 6800 kWH, how can they quote for 1638 kWh usage. FWIW, every other supplier I contacted for a quote on 6800 kWH usage supplied me with accurate quotes according to their published and current tariffs, so why can’t E.ON. If I can do it manually why can’t E.ON do it automatically instead of trying to suck me into a contract on false figures. Furthermore their reply suggested I take this issue out of the public eye and communicate via WhatsApp. Shady behaviour.

Useless. Sent 5 emails asking for help. Reply is we are looking into this and will reply. 3 months. I'm paying both. How? Copied emails from both octopus old saying they own gas and e.on saying they own both. Neither come back to me. Octopus gave me details of gas Meter and national database. Eon nothing. I shared with them.. How do I resolve. Go to energy obsman. Customer service useless. Disgraceful. Avoid. X

Over charge they admit they was wrong 7 years on still trying to get money back stay away from them

I have now been in dispute with EON since February 2026 regarding them not being my supplier since Oct 2025. Now four months down the line with no resolve. I've lost count how many times I've sent images of my meter and carried out kettle tests.
Despite constant assurances that my issue is being looked at by the metering team and guarantees that my case would elevated to a higher priority absolutely nothing has happened to progress my complaint. EON seem to think that me having to pay two suppliers for electricity is quite acceptable. As of June 22nd I'm still waiting on somebody to come back to me as opposed to having to chase up every two weeks to receive the same assurances with no resolve.

Poor customer service , worst company I ever had to deal with ..

Produced two separate account for the same name for the same address and they couldn’t explain how it happened ?

I was so glad to leave them as for months couldn’t get anywhere with them .

I recommend Scottish power with excellent customer services and competitive prices .

The Engineer did a good job and he was polite.

If i could 0 stars I would shocking treatment from these lot was originally leaving to go to Scottish power to be told we couldn’t leave due to a debt ok no problem arranged a plan to pay back as well as paying the bill we payed every week £50 then come home to find no gas or electricity got in touch with eon to be told Scottish power took over on the 10th of June ?? Had no correspondence from eon telling us as far as we were concerned with were still with eon they even took a last payment on the 19th of June and then cut us off and washed their hands of us freezer full of food nearly ruined while we sorted it out with Scottish power etc total shambles of a company and what we owe eon they can go and whistle for it .

After complaining about my direct debit they came with a solution to put me on to a variable direct debit. Great service and they resolved my complaint

Corrupt rotten company whose sole aim is to Skank as much money from public as possible

The lady l spoke to on Tuesday about the complaints phoned me today to confirm everything has been corrected
I am extremely pleased with being so quick in resolving all
Christine

i booked in a meter check as the cost of the bills was excessive.Twice on separate days no one turned up,they hadn't booked in a engineer at all.
Money taken out of my account that didn't match the invoice balance.
we had a next appointment booked for Monday 22/6 for the meter to be checked, they have just informed me that it has been cancelled due to me going to another supplier.
shoddy service.

Called today and made to speak to AI system first before reaching actual person who can understand you. And when finally connected to energy advisor (human) she said hello asked for my full name and then dropped the phone call after I told her my full name. Disgrace of a company!

Mark (M60282).engineer was a very communicative, helpful and as done great job. Making me understand how to use energy efficiently, generally he was a good man. Very neat and tidy work, I would have him back to my property work. I have given him 5 stars and would have loved to give more if I could

I am extremely disappointed with the service I have received.
I first noticed unusually high charges in September 2025. I promptly submitted meter readings, expecting my bill to be corrected. Instead, the charges increased.
In May, I again submitted updated readings and raised my concerns, asking for clarification, but received no response. I then escalated the matter to the complaints department.
Throughout the complaints process, I received several contradictory responses:

I was told my account had been billed using estimated readings for nearly a year
Then I was informed that my submitted readings had been updated and my account was in credit
Later, I was advised that there were no issues and everything had been checked and confirmed as correct
Finally, I was told the account was accurate but simply required ongoing meter readings

Despite all of this, after a prolonged discussion and multiple submissions of accurate readings, I was charged the same amount again in June (£148.82), with no visible correction applied.
This raises serious concerns about the accuracy of billing and the handling of customer complaints. Based on my experience, I have little confidence that customer concerns are properly reviewed or resolved.