E.ON Next Overcharge: Get Your Refund Back

Finding an overcharge on your energy bill can be frustrating, but you have clear rights to reclaim your money. E.ON Next, like all energy suppliers, is obligated to bill you accurately and correct any errors promptly. This guide will walk you through the steps to get your refund.

Reviewed by Corey Musa, Founder·Last reviewed June 2026·LinkedIn

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Your rights

Under Ofgem's supply licence conditions, energy suppliers like E.ON Next must bill customers accurately and promptly correct any billing errors. If you have been overcharged, E.ON Next is required to refund the excess amount. This is part of their duty to provide a fair and transparent service, ensuring you only pay for the energy you've actually used.

Step by step

  1. 1Review your E.ON Next bills thoroughly, comparing them with meter readings or previous usage. Identify the specific dates and amounts where you believe an overcharge occurred.
  2. 2Contact E.ON Next's customer service, clearly explaining the overcharge and providing any evidence you have, such as meter photos, bank statements, or previous correct bills.
  3. 3If E.ON Next does not resolve the issue to your satisfaction, formally raise a complaint through their official complaints procedure. Keep a record of all correspondence and reference numbers.
  4. 4If your complaint remains unresolved after eight weeks, or you receive a deadlock letter, escalate your case to the Energy Ombudsman. They are an independent body that can investigate and make binding decisions.

What they'll say, and your comeback

The bill was based on an estimated meter reading.

Comeback, I have provided an actual meter reading. Please re-bill me accurately based on this reading and issue a refund for any overpayment.

There was a technical issue with your smart meter.

Comeback, You are responsible for ensuring the accuracy of my meter and billing. Please investigate this issue, correct my account, and refund the overcharged amount.

This is a back-billing adjustment for previous undercharges.

Comeback, Under Ofgem's back-billing rules, you generally cannot charge me for energy used more than 12 months ago if the error was yours. Please confirm the period and justification for this charge.

FAQ

How long does E.ON Next have to refund me?

Once E.ON Next agrees you've been overcharged, they should process your refund promptly, typically within 10 working days, though this can vary depending on their internal processes.

What if E.ON Next refuses to refund me?

If E.ON Next refuses to refund you despite your evidence, you should escalate your complaint to the Energy Ombudsman. They can independently review your case and enforce a resolution.

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A self-serve tool, not a law firm. General information, not legal advice.