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Energy Complaints and the Energy Ombudsman

ComplaintsLast reviewed: 1 April 20256 min read

If you have a problem with your energy supplier — overcharging, billing errors, poor service, or a disputed meter reading — you have the right to complain and, if necessary, escalate to the Energy Ombudsman. The process is free and the ombudsman's decisions are binding on your supplier.

Key points

  • All Ofgem-licensed energy suppliers must have a complaints process and belong to an approved ADR scheme.
  • After 8 weeks (or upon receiving a deadlock letter) you can refer to the Energy Ombudsman for free.
  • The Energy Ombudsman can award compensation of up to £10,000 and require suppliers to take corrective action.
  • Ofgem sets rules on billing accuracy, switching, and consumer protection that all suppliers must follow.
  • Citizens Advice's Extra Help Unit can support vulnerable consumers with unresolved energy complaints.

Common Energy Complaints

Energy complaints typically fall into several categories, all of which the Energy Ombudsman is equipped to handle:

  • Billing and metering: Incorrect bills, estimated bills not reflecting actual usage, unexplained charges, disputed final bills after switching or moving.
  • Smart meters: Failed installation appointments, meters not working correctly, incorrect readings being submitted.
  • Switching: Delays in switching supplier, erroneous transfers (being switched without consent), disputes over final settlement statements.
  • Prepayment meters: Issues with top-up, being placed on a prepayment meter without proper process, self-disconnection during hardship.
  • Customer service: Failure to respond to correspondence, not honouring agreed payment plans, aggressive debt collection practices.
  • Direct debits: Unexplained increases in direct debit amounts without prior notice.

How to Complain to Your Supplier

Start by contacting your energy supplier's customer service team and clearly stating that you are making a formal complaint. Under Ofgem rules, suppliers must acknowledge your complaint and respond within set timeframes.

Provide your account number, a clear description of the problem, relevant dates, and the resolution you want. Keep a record of all contacts — call dates, reference numbers, names of agents, and copies of emails.

If the initial contact does not resolve the issue, ask to escalate within the supplier's complaints process. Most suppliers have a specialist complaints team. If the supplier has not resolved your complaint within 8 weeks, or if they have issued a deadlock letter, you can refer to the Energy Ombudsman without waiting further.

Using the Energy Ombudsman

The Energy Ombudsman is an independent service that resolves disputes between domestic and small business energy consumers and their suppliers. All Ofgem-licensed suppliers are required to be members of the scheme.

To refer your complaint:

  • Visit energyombudsman.org and complete the online referral form
  • Or call 0330 440 1624 (Monday to Friday, 8am–8pm; Saturday 9am–1pm)
  • Provide your complaint summary, evidence of contact with the supplier, and any deadlock letter received

The ombudsman can direct your supplier to provide a financial award (up to £10,000), an apology, a corrected bill, or practical action to fix the problem. The process is free for consumers and the supplier must comply with any decision you accept.

Reporting to Ofgem for Wider Issues

The Energy Ombudsman handles individual complaints, but if you believe your supplier is systematically breaking rules — for example, consistently failing to process switches on time or sending inaccurate bills to many customers — you can report this to Ofgem directly.

Ofgem cannot resolve individual disputes but can investigate supplier conduct and take enforcement action, including fines. Citizens Advice also runs the Consumer Service on behalf of Ofgem, providing free advice and recording complaints for intelligence purposes.

For consumers on low incomes or in vulnerable situations who cannot resolve a complaint through normal channels, Citizens Advice's Extra Help Unit provides specialist support, including direct liaison with suppliers on your behalf.

Frequently asked questions

My energy supplier has gone bust — who do I complain to?
If your energy supplier enters administration, Ofgem will appoint a "Supplier of Last Resort" to take over your supply. You will be protected and should not lose any credit balance — though you may need to register a claim if the credit balance is significant. Your complaint can be transferred to the new supplier, or you may need to raise a new complaint with them. Check the Ofgem website for the specific supplier resolution process.
Can I withhold payment while a complaint is ongoing?
This is risky. Withholding payment can lead to debt being recorded against you and may result in your supply being cut off or legal action. You can ask your supplier to put a hold on debt collection while a complaint is being investigated, and the Energy Ombudsman may also request this during an investigation. Do not stop paying without seeking advice first from Citizens Advice.
What is an erroneous transfer and what can I do?
An erroneous transfer is when you are switched to a different energy supplier without your consent. This is a breach of Ofgem's rules. Contact both your original supplier and the new supplier immediately, and raise a formal complaint. Your original supplier is responsible for resolving the situation and must return you to supply promptly. If they do not, escalate to the Energy Ombudsman.
Can you switch energy supplier while a complaint is ongoing?
Yes. You are generally free to switch suppliers at any time, even while a complaint is being investigated. Switching does not automatically close your complaint with the original supplier — the Energy Ombudsman can still investigate a complaint about a supplier you have left. However, if you owe money on your account, your supplier may be able to place a block on switching until the debt is resolved.
What compensation can you get from an energy complaint?
The Energy Ombudsman can direct your supplier to provide an apology, take corrective action, or pay financial compensation. Automatic compensation is payable in certain situations under Ofgem's Guaranteed Standards — for example, if your supplier fails to restore supply within the required time, fails to respond to a complaint, or misses a meter appointment. Payments under Guaranteed Standards range from £30 upwards depending on the type of failure.

What to do next

  1. 1
    Refer your complaint to the Energy Ombudsman

    Free online referral for unresolved energy supplier disputes.

  2. 2
    Contact Citizens Advice for energy help

    Free advice on energy billing, switching, and complaints.

  3. 3
    Check Ofgem's consumer rights guidance

    Ofgem guidance on your rights as an energy consumer.

Official bodies and resources

Energy Ombudsman

Ombudsman

Resolves complaints between energy consumers and suppliers, including gas and electricity companies.

Office of Gas and Electricity Markets

Regulator

The energy regulator for Great Britain, protecting consumers by working to deliver a greener, fairer energy system.

Citizens Advice

Charity

Provides free, confidential, and independent advice on a wide range of issues including benefits, housing, debt, and employment.

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Disclaimer

This information is for general guidance only and does not constitute legal advice. You should seek qualified legal help if your situation requires it.