Energy companies have strict rules on billing and complaints. Describe your situation and get instant plain English guidance on your rights and how to challenge unfair charges.
↓ Try the Checker NowFrom 1 October to 31 December 2026 the Ofgem energy price cap is £1,723 a year for a typical household paying for gas and electricity by Direct Debit, up 4% from £1,663 (Ofgem, 26 August 2026). On average across England, Scotland and Wales that is 26.32p/kWh for electricity with a 54.83p daily standing charge, and 7.97p/kWh for gas with a 29.68p daily standing charge. The government has removed VAT from electricity bills from 1 October 2026 to 31 March 2027. The cap limits unit rates and standing charges, not your total bill, and Ofgem sets it every 3 months. Northern Ireland is regulated separately, by the Utility Regulator.
In England, Scotland and Wales, complain to your supplier first: it must try to resolve your complaint within 8 weeks. After that, or sooner if you get a deadlock letter, you can take it free to the Energy Ombudsman (0330 440 1624, energyombudsman.org). In Northern Ireland, go to the Consumer Council (0800 121 6022).
Key areas covered: back bills, estimated bills, Direct Debits and credit, payment plans, the Ofgem price cap, supplier complaints, the Energy Ombudsman, and the Northern Ireland rules. Checked against Ofgem, the Energy Ombudsman, the Utility Regulator and the Consumer Council (25 September 2026).
In England, Scotland and Wales, Ofgem's back-billing rules mean you do not have to pay for energy used more than 12 months before the date on the bill if you have not had an accurate bill for it before, you were not told what to pay through a statement of account, or your Direct Debit was set too low. This does not apply if you acted unreasonably, for example by blocking access to your meter or ignoring requests for payment. In Northern Ireland the limit is 13 months, where the supplier is at fault.
Ofgem expects suppliers to base Direct Debits on accurate and up-to-date information. You can ask your supplier to refund your credit balance at any time, and it must do so in a timely manner. If it will not, complain.
This checker gives you a plain English read on your specific situation, answered only from its own guide for your part of the UK, checked against official sources. No login needed, and your answer is generated instantly based on what you tell us.
Our guidance covers many common situations, but complex or high-stakes cases need professional advice. Official information: Ofgem (England, Wales and Scotland), Energy Ombudsman (England, Wales and Scotland), Consumer Council for Northern Ireland and Utility Regulator (Northern Ireland). For free help, contact Citizens Advice (England 0800 144 8848, Wales 0800 702 2020), Citizens Advice Scotland (0800 028 1456) or Advice NI (0800 915 4604), or speak to a solicitor.
What you need to know
The checker below answers from the verified guide for your nation. These are the key points from each one.
Full guide: Can I Dispute My Energy Bill in England, Wales or Scotland? Last verified: 25 September 2026.
Full guide: Can I Dispute My Energy Bill in Northern Ireland? Last verified: 25 September 2026.
This guidance is for general information only and does not constitute legal advice. Always verify current figures and legislation on GOV.UK or seek professional advice for your specific situation.
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Do I have to pay an old energy back bill?
In England, Wales and Scotland, Ofgem back-billing rules mean you do not have to pay for energy used more than 12 months ago if you have not had an accurate bill for it before. The 12 months count back from the date on the new bill. You will have to pay if you acted unreasonably, for example by blocking access to your meter.
Are the rules different in Northern Ireland?
Yes. Energy in Northern Ireland is regulated by the Utility Regulator, not Ofgem. Since 1 October 2020, where the supplier is at fault, it can back-bill a home or microbusiness customer for no more than 13 months of energy.
Where can I take a complaint about my energy supplier?
Complain to your supplier first. In England, Wales and Scotland it must try to sort out your complaint within 8 weeks. After that, or sooner if you get a deadlock letter, you can go to the Energy Ombudsman for free. In Northern Ireland, go to the Consumer Council for Northern Ireland, which is free.
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The checker answers only from the guide for the nation you choose, plus what you tell it. If your question is not covered there, it says so instead of guessing. Each guide was checked against primary sources on 25 September 2026.
Spotted something missing, wrong or out of date? Tell us, or comment on the guide.
Further reading: our blog explains what the October 2026 energy price cap does and does not limit.
Directed and published by Matt Thompson, founder of UK Work Rights. Guidance checked against GOV.UK, ACAS and legislation.gov.uk. This is general rights guidance, not legal advice.
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