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Energy Review
Last updated: 10 August 2026

What is the Energy Ombudsman service?

Dealing with an energy supplier that refuses to fix a mistake can be incredibly frustrating.

What is the Energy Ombudsman service?

What is the Energy Ombudsman?

Key takeaways
The service is completely free for consumers and independent from energy suppliers.
You cannot go straight to the Ombudsman; you must complain to your supplier first.
They can force suppliers to pay compensation, fix mistakes, or issue a formal apology.
The service covers eligible heat-network disputes, while further redress reforms announced in 2026 are still being implemented.

Dealing with an energy supplier that refuses to fix a mistake can be incredibly frustrating. Whether you are facing unexplained bill increases, a faulty smart meter, or poor customer service, you might feel stuck if the company ignores your complaints. This is exactly where the Energy Ombudsman steps in. It is an independent dispute resolution service for Great Britain designed to step in when a consumer and an energy company cannot reach an agreement.

The service acts as a referee. It looks at the evidence from both sides, decides who is right, and has the authority to tell the energy supplier exactly what they must do to put things right. If you accept an Ombudsman decision, it becomes legally binding on the supplier. This means the energy supplier has to follow the instructions, whether that involves refunding money, fixing a technical issue, or paying you compensation for the trouble they caused.

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How the service works and who pays for it

A common worry among consumers is that the Ombudsman might take the side of the energy companies. Because the service operates as a private organisation funded by the energy industry, some people assume it works in the suppliers' favour. In reality, the setup is entirely impartial and actually penalises energy companies for failing to resolve issues themselves.

The service is completely free for households to use. Instead of charging the public, the Ombudsman charges the energy suppliers. Crucially, a supplier has to pay a case fee every single time a consumer escalates a complaint to the Ombudsman, regardless of whether the supplier wins or loses the case. This fee structure heavily incentivises energy companies to sort out your problem in-house. If they ignore you or refuse to help, it costs them money the moment the Ombudsman gets involved.

The volume of complaints handled by the service is substantial. In 2025, the Ombudsman accepted around 80,256 cases. While this was a decrease of roughly 14% compared to the previous year, it still shows that tens of thousands of households rely on the service to fix ongoing disputes every year.

What types of complaints do they handle?

The Energy Ombudsman can look into most problems you might have with a gas or electricity supplier, provided the issue relates to your domestic supply. The most common disputes fall into a few specific areas.

  • Billing disputes: This is by far the biggest issue, making up about 56% of all cases in 2025. It includes being charged for energy you did not use, receiving massive catch-up bills after months of estimated readings, or having your Direct Debit set at an unreasonably high level.
  • Smart meter problems: In the first half of 2025, these made up around 11% of cases. They can involve smart meters that stop sending automatic readings, display incorrect information on the in-home monitor, or fail to switch between credit and prepayment modes correctly.
  • Customer service failures: In the first half of 2025, around 9% of disputes related directly to how the supplier treated the customer. This can cover ignored emails, extremely long wait times on the phone, or staff giving incorrect advice that led to financial loss.
  • Switching delays: If a switch to a new supplier goes wrong, takes too long, or results in you being billed by two different companies at the same time.

Since 1 April 2025, the Energy Ombudsman has been able to consider eligible heat-network disputes; Ofgem began regulating heat networks on 27 January 2026. A heat network is a system where heating and hot water are generated centrally and piped into multiple homes, common in blocks of flats, social housing, and student accommodation. Historically, these consumers had very little protection. Now, Ofgem formally regulates heat networks across Great Britain. This means vulnerable consumers and households connected to these networks have statutory access to the Energy Ombudsman if they have a dispute with their heat supplier.

Recent changes and new enforcement powers

The energy redress landscape has seen massive regulatory changes recently, giving the Ombudsman much sharper teeth and making it easier for households to get a fair result.

Legally binding enforcement powers

If you accept an Ombudsman decision, it is legally binding and the supplier normally has 28 days to provide the remedy. If it remains outstanding after that period, you can pursue implementation through the courts. In June 2026, the government also announced further reforms intended to strengthen redress enforcement, but these still need to be implemented.

Reduced waiting times

Consumers currently normally wait eight weeks after complaining to their supplier before they can ask the Ombudsman for help. In June 2026, the government announced plans to reduce the escalation window to six weeks and to aim for decisions within four weeks, with a possible later reduction of the escalation window to four weeks.

Energy broker regulation

The government has stated its intention to appoint Ofgem to regulate third-party intermediaries, commonly known as energy brokers. This is designed to stamp out predatory sales tactics and protect small businesses, giving them a clearer route to dispute resolution when brokers mis-sell contracts.

How to escalate a complaint

You cannot take a problem straight to the Energy Ombudsman the moment it happens. There is a strict escalation process you have to follow. The Ombudsman will only step in once the supplier has had a fair chance to fix the mistake themselves.

1
Complain to your supplier first
You must raise a formal complaint with your energy provider. Do this by email, through their official online form, or over the phone. Make sure you clearly state that you are making a formal complaint, rather than just asking a general question.
2
Wait for a resolution or a deadlock letter
Once you complain, the supplier normally has eight weeks to resolve the issue, unless it sends you a deadlock letter sooner. If they cannot fix it, or if you completely disagree with their final offer, they should send you a 'deadlock letter'. This is a formal notice saying they will not take any further action.
3
Contact the Energy Ombudsman
As soon as you receive a deadlock letter, or once the maximum waiting time has passed without a fix, you can open a case with the Ombudsman. You must normally do this within 12 months of receiving the deadlock letter.
Watch: Under Ofgem rules, suppliers are legally required to tell you about the Energy Ombudsman if they cannot resolve your complaint. However, industry data shows suppliers correctly signposted consumers in only around 45% to 48% of cases in 2025. Do not wait for them to remind you — if your wait time is up, escalate it yourself.

How to build a strong case

Because the Ombudsman is strictly impartial, they act as an independent judge. They will not build a case on your behalf or hunt for evidence that you have not provided. The trade-off for using the service is that you have to invest the time to gather clear proof yourself.

To give yourself the best chance of a fair decision, you need to show exactly what went wrong and how it affected you. Before you open your case, gather the following:

  • Copies of your energy bills showing the incorrect charges or missing payments.
  • A record of your meter readings, ideally with date-stamped photos of the meter screen.
  • Copies of all emails, letters, and web chats between you and the supplier.
  • A timeline of phone calls, including the dates, times, and the names of any staff members you spoke to.
  • Proof of any financial loss you suffered because of the issue, such as bank fees from a bounced Direct Debit.

When you submit your complaint through the Ombudsman's online portal, you will be asked to upload this supporting evidence. You usually have a set window, such as 14 days, to provide everything they need to start the investigation.

What are the possible outcomes?

When the Ombudsman finishes their investigation, they will issue a decision. If they decide the energy supplier was in the wrong, they can order the company to take several different actions to put things right. The Ombudsman does not just award money; they focus on practical solutions too.

  • Financial compensation: The Ombudsman can mandate financial payouts up to £10,000 for domestic customers, and up to £20,000 for small businesses. To put this into perspective, major UK energy providers paid out over £20 million in compensation for billing mistakes alone over a five-year period leading up to 2025.
  • Practical action: They can force the supplier to fix a broken meter, correct a wrong tariff, update incorrect account details, or clear a debt that was added to your account by mistake.
  • Official apology: The supplier may be ordered to issue a formal written apology for the stress and poor service you experienced.
  • Process recommendations: The Ombudsman can tell the supplier to change their internal processes to stop the same mistake happening to other people.

Once the Ombudsman makes an offer, you have the choice to accept or reject it. If you accept it, the decision becomes legally binding on the supplier. If you reject it, you lose the Ombudsman's resolution, but you retain your right to take the supplier to court yourself.

What is the difference between Ofgem and the Ombudsman?

People often confuse Ofgem and the Energy Ombudsman, but they have completely different roles. If you have a specific problem with your own account, you need the Ombudsman, not Ofgem.

Ofgem is the government regulator for the energy industry in Great Britain. It sets the rules, oversees the price cap, and ensures fair competition. If an energy company breaks the rules on a massive scale, Ofgem can issue multi-million-pound fines. However, Ofgem cannot and will not intervene in an individual customer's dispute.

The Energy Ombudsman handles those individual, day-to-day disputes. They look at your specific account, your specific bills, and award personal compensation directly to you. While Ofgem oversees the Ombudsman to make sure the system works, the two bodies handle entirely different parts of the market.

FeatureEnergy OmbudsmanOfgem
Main roleResolves individual disputesRegulates the whole energy market
Can they fix your specific bill?YesNo
Can they award you compensation?Yes (up to £10,000 for homes)No
Can they issue sector-wide fines?NoYes (can fine companies millions)

Frequently asked questions

How do I contact the Energy Ombudsman?

You can contact them by calling 0330 440 1624 or by submitting a complaint through their official website. If you prefer to send physical documents, you can post them to PO Box 966, Warrington, WA4 9DF. Make sure you have your deadlock letter or proof of your initial complaint before you get in touch.

Is it worth complaining to the Energy Ombudsman?

Yes. The service is entirely free to use and completely independent. If your supplier is ignoring you or refusing to fix a billing error, the Ombudsman has the legal power to force them to correct the mistake and pay you compensation for the hassle.

What is the waiting period rule?

You usually have to wait a set number of weeks (historically eight weeks) after making your initial complaint to the supplier before the Ombudsman will accept your case. However, if the supplier sends you a 'deadlock letter' before that time is up, you can escalate the issue to the Ombudsman immediately.

Can the Energy Ombudsman issue massive fines to my supplier?

No. The Ombudsman handles your individual dispute and can award personal compensation up to £10,000 for a household. Broad, multi-million-pound regulatory fines are handled by the energy regulator, Ofgem.

Can I use the Energy Ombudsman for a water bill dispute?

No. The Energy Ombudsman does not handle water-bill disputes. If you have a problem with your water company that you cannot resolve, you need to contact the Consumer Council for Water (CCW) and the Water Redress Scheme (WATRS).

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Rob Gibbs

Written by

Rob Gibbs

Hi, I'm Rob, and I run Energy-Review.co.uk. I initially started this project in 2018 when I was looking to switch energy suppliers and found there wasn't a website that provided simple, data-backed reviews on all the suppliers available. Since then, I have spent a lot of time (too much, some may say!) looking at all publicly available data about each supplier and writing reviews using this information. These reviews are updated as regularly as possible, and any data is backed up by a source where necessary. I have also started writing guides on various energy-related topics, which hopefully you will find useful. If you find any issues, please use our contact form to let us know.