Letter to complain to an energy supplier by Citizens Advice
Updated 3 November 2025
The Citizens Advice template letter to complain to an energy supplier helps consumers raise issues such as missing bills and sets out their right to escalate to the energy ombudsman if the complaint is not resolved. It is part of Citizens Advice’s widely trusted library of open, lawyer-vetted letter templates.
Letter to complain to an energy supplier
[complainant name]
[complainant address line 1]
[complainant address line 2]
[complainant email]
[complainant phone]
[supplier name]
[supplier address line 1]
[supplier address line 2]
Type of supply: [supply type]
Account number: [account number]
Reference number: [reference number]
[letter date]
To whom it may concern,
Re: Complaint against [supplier name]
I have still not received my first bill at this address, despite contacting you several times to ask for one. I moved into my new home on 10 July. I requested a bill on 3 August, 10 September and 7 October.
Please send me a bill as soon as possible.
I first complained on [first complaint date]. I understand you have 8 weeks to resolve my complaint before I can go to the energy ombudsman. If we haven't agreed a resolution about my complaint before the 8 weeks have lapsed, I understand you'll issue me with a deadlock or 8 week letter which means I can then take my complaint to the energy ombudsman.
I have calculated that the 8 weeks will have lapsed on [eight week deadline].
I first contacted you about this by [mode of contact].
Please respond to my concerns, including any other information you feel would help resolve this complaint.
Please reply in writing within [number of days] working days. If you fail to respond in this time, I will consider taking the matter further.
Thank you.
Yours faithfully,
[complainant name]
About this template
What is this template?
Letter to complain to an energy supplier by Citizens Advice is a free, ready-to-use Consumer law template you can open, customize, and download on GitLaw. It gives you a professionally structured starting point, so you never have to draft from a blank page. The wording is plain and modern, organized into clear sections that are easy to read, edit, and adapt to your own situation before you share or sign it.
When should you use it?
Reach for this Consumer law template whenever you need a reliable agreement quickly and want to be sure the essentials are covered. It suits individuals, freelancers, startups, and established businesses alike. Instead of paying for a document drafted from scratch, you can start here, tailor the details to your arrangement, and have a polished draft ready in minutes. This version is drafted with England & Wales in mind, though you should always review the final wording against the laws that apply to you.
What's typically included?
A well-drafted Consumer law usually sets out the parties involved, the scope of the agreement, and each side's rights and responsibilities. Expect sections covering key terms and definitions, how long the agreement lasts, how it can be ended, and what happens if something goes wrong. This template brings those building blocks together in a sensible order, so you can focus on the specifics rather than worrying about what to include. Open it to read the full document, then sign up to edit, negotiate, and e-sign it directly in GitLaw.