Energy · email template
Complain about an energy bill, back-bill or wrong reading
Use this for estimated bills, a catch-up bill covering more than twelve months, or a balance you do not recognise.
Send to Your energy supplier's complaints team · checked 14/09/2026
Have these to hand before you write
- Account number and the disputed bill dates and amounts
- Meter readings with dates and photographs where possible
- Dates of previous calls or emails about the issue
Suggested subject line
Formal complaint about billing on account [ACCOUNT NUMBER]
Opening lines
I am making a formal complaint about the billing on account [ACCOUNT NUMBER]. Please treat this as a complaint under your complaints procedure and confirm receipt in writing.
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General information, not legal or financial advice. Check your own contract and current rules before sending.