E.ON UK Reviews 

Worst supplier to deal with, staff do not know what they are doing. Offering products to my 81 year old Mum that do not work in her flat. Never call back, switching to another supplier as they are uncaring

Have tried several times to sign up as a new customer to Eon and set up an account for use with a heat pump unit.
No welcome letter, customers service assistant said they cant set me up as it will have to be done on line! Have filled out the appropriate on line document yet no response.
All the time im being charged at a far higher rate on a tariff the original builder set up.
Thought Eon had a good customer service record, obviously dont need my business. Will look at other speciffic tariffs like Octopus Cosy.
Very disappointed with lack of response to my request.

1 star – Left without gas for days with no real support

I had my gas supply suddenly stop on Saturday, and my gas meter appeared completely dead with no signs of activity. I contacted E.ON support, went through a long list of repetitive and unnecessary questions, and was finally told it was a fault requiring an engineer. I was promised an appointment for Sunday morning.

Because of this, I had to cancel my plans for Sunday, expecting the issue to be resolved.

On Sunday, I received another call and was asked the exact same questions all over again. After repeating everything, I was told there were no available engineers because my case was “not an emergency”, and that engineers only handle emergency situations on weekends. My appointment was then moved to Monday.

This left me without gas for the entire weekend — no ability to cook, no hot water, no heating. This is not a minor inconvenience.

On Monday, the situation repeated itself yet again. Another call, the same questions for the third time, and still no available engineer. I genuinely do not understand why my information cannot be recorded properly instead of asking the same things over and over again.

At this point, I am still waiting, with no clear resolution and no accountability.

Very disappointing service. Being left without gas for days with no proper support is unacceptable.

Had an engineer called Frank just completed a EV charger installation at my property today. His work standard was exceptionally high, he was clean and tidy throughout, explained everything in a clear manner and was genuinely a pleasant individual to deal with. I would recommend him to anyone.
Thank you Frank for all your hard work today.

James from Team Derry FSD36 was brilliant regarding a complicated and awkward matter, he was polite, informative and helpful. Thankyou James, appreciated 🔥

My brother had no electricity for a week and they still not come out to fix it

I was an EoN customer for so long I cannot remember how long. We moved home in October and I can say hand on heart we would not have bought the house knowing the issues we’d have with octopus energy the supplier once said we wanted to go to EoN. All delayed by faulty meters and rogue practices and a bill of £400 per month. They are the worse organisation ever. They bullied harassed and overcharged us sadly the energy ombudsman is no better they are corrupt also. It’s took us 5.5 months to get back to EoN. I’ve been dealing with escalated complaints. A decent guy I thought but now they are blindsiding me. They don’t respond to any emails. The energy ombudsman has gone to ground and the guy there won’t speak and won’t give me information or call me back, octopus won’t give me complaints number or engage and are still bullying us and now EoN who we were loyal to won’t help us. I have begged …pleaded and asked for help from the guy who assisted us at EoN but blind sided … I missed a call back but he just ring engage and I’m having a baffling conversation on their WhatsApp as he’s refusing to talk to me ……so I think we will move again but we are trapped into EoN …. I am disabled. We simply need help to complete our move queries. Bitterly disappointed and abandoned by EoN who we thought were much better than octopus who are cowboys. Don’t get me on Energy Ombudsman. They must be paid by that man Greg Octopus. Look at the unprompted reviews not the smooshed ones .

After being with Eon for years we moved to a smart meter as they said we had to. We live in a 2 bedroom flat and topped up £50 Saturday morning, by Monday morning we were £9 in arrears, so topped up another £50.
I queried with customer service why so much money was used when we averaged £4.50 per day. After giving me the run around for a day, back and forth communications, they still asked me what i wanted - all i wanted was a simple explanation as to why the £50 credit disappeared in 48 hrs. This was my opening question and asked 3 times more.
We had family visiting and were hardly in the property, we didn't use the washing machine which would usually push daily spends up to about £7.
After becoming frustrated that they could not answer the simple question - we have now switched supply to Octopus, very easy to do and now we are paying £15 per week.
Every cloud has a silver lining. We were robbed but now we have experienced how easy it is to switch, we would recommend to everyone, to just look into it.

My experience with E.ON Next has been nothing short of appalling, and I strongly urge others to avoid this company.
They appear to use misleading or unclear terms to attract customers initially, giving the impression of fair pricing and reasonable conditions. However, once you are signed up, the reality is very different. My direct debit was abruptly increased — effectively doubled — without any credible justification.
When I challenged this, I was told my energy usage had increased. This is categorically untrue. My usage has remained consistent, and their own earlier estimates contradict this claim. It raises serious concerns about the accuracy and integrity of their billing practices.
Rather than properly investigating or providing transparent evidence, they resorted to generic responses and failed to take accountability. This behaviour feels deceptive and exploitative, particularly during a time when energy costs are already a major concern for households.
This is not just poor customer service — it points to a wider issue of trust and fairness.
In my view, this is a company that customers should be very wary of. There are far more honest and transparent energy providers out there.

Please be so careful when having a smart meter fitted. We had one fitted at the property we bought and the Eon representative has removed the bonding that kept our house safe.
When I contacted them to say this needed making safe they told me that it was my responsibility and at my cost. Search the forums online and you will see I’m not the only customer who has had this issue.
I don’t have the money to fix this yet so my family (including a disabled child and cancer patient) will now have to hope we don’t get electrocuted if something goes awry without our knowledge.
I wish I hadn’t of had them out to us, we had a safe house before they visited and they are not interested in rectifying their destruction.

Lived at a property for four years with my husband who always paid Eon by direct debit at £155 a month. He was in credit with them when he suddenly left me in November. I rang up and took over the bills and somehow they billed me for £756 saying that's what I had apparently used in the two months I remained there before moving into my new home, when it was just me, even though previous bills had never remotely been this high. I've obviously disputed and I'm still trying to dispute this three months later. Absolutely shocking! My new property I've been using less than £100 a month doing everything I was in my old home.

Perfect! No mess, no hassle, fast installation of both gas and electric smart meters. Engineers were really nice. Highly recommend this company

Smart meters need to be fixed/replaced as they were no longer sending readings. Kieran, the engineer, was extremely knowledgeable and efficient and sorted everything out.

Great service today from a very friendly engineer. He came to change my meters from 3G to 4G. Very knowledgeable and kept me informed. Cleaned up after himself and read through the leaflets with me and the new smart meter before leaving.

My HIU system is broken and therefore my bill has over doubled by by price and they don't want to come fix on a Saturday because it's not an emergency and during the week they cannot give a 2hr window which is very inconvenient for people who don't work from home

The worst customer service ever.
So, meter not working, who owns the meter eon does, display not working for 4 month, been reported 6 times told me its not there issue but northern grids,
Eon’s meter so why wont they just swap it,
Been getting estimate bills unable to get actual bills.
😡

I’m having the worst experience as customer I have ever had. They sent me a bill which was too high and I have been contesting it for over two months. In this time, I have spoken to countless of customer service agents over phone and email, however, every single one of them has said the same thing: “I’ll get back to you”. In the two months this has been going on, I have submitted multiple readings and conducted multiple tests but they has still ignored my emails and I can no longer get through to anyone on the phone. They have sent emails to say about late fees and debt collection agencies despite this being contested. Overall, I would not recommend and as soon as this ordeal has concluded I will be moving to Octopus Energy!

This is now my third complaint about E.ON, and the second time their accounts team has made a serious mistake.

I switched suppliers in December 2024. In January, E.ON took a direct debit in error, which they later refunded. After that, I heard nothing further and was under the impression my account was fully settled and closed.

Fast forward to now (April 2026), and out of nowhere I receive a letter demanding £155.44 by 30th April, claiming I have an outstanding balance of £630, with threats of it being passed to debt collection.

Naturally, I called immediately in a panic. The first advisor I spoke to was extremely rude and simply told me I had to pay, saying if there was an issue they would “refund it later.” When I asked to raise a complaint, the call conveniently disconnected.

I then had to call back on a chargeable number, where a second advisor explained that their team had already been looking into the account, but it is now being reviewed again due to the time that has passed. I’ve been told this could take up to 21 days, and thankfully my account is now on hold during this time.

However, how is it acceptable for a company to suddenly demand over £600 from a closed account nearly two years later, especially when they previously confirmed the balance was settled and even issued a refund?

This has caused unnecessary stress and worry, and judging by other reviews, I am clearly not the only person this has happened to.

Extremely disappointing experience.

Had issues with meters and Andy came out from EON and sorted it all out, and updated them and changed one of the meters. Lovely chap very pleasant, knew his stuff and answered any questions I had. Cannot fault the service he provided.

This company is charging me even my account was closed on March 12, 2024. They even pass it yo collection company. Last payment made 25th of March 2024. We left the house 12th of March as I sold my house and move to New Zealand. How reckless this company…My name is Jerrymie Angon mobile number is 07769697670. I want them to be in contact with me and call this collection team to stop sending letters on my Aunt address.