Back Billing
Back Billing
Recently we have been seeing an increase in suppliers issuing invoices for charges that are more than 12 months old. In this article we will be reviewing why you may not be liable for these charges.
What Is a Back Bill?
A back bill is issued when your supplier discovers that they haven’t accurately invoiced you. This can be due to missed readings, estimated charges, or issues with obtaining consumption data. These bills can include charges dating back weeks, months, or even over a year, leading to unexpected costs.
The 12-Month Back-Billing Rule
Under Ofgem’s rules, suppliers cannot charge domestic energy users or microbusinesses for energy used more than 12 months ago, provided that you:
- Never received an accurate bill for that period (even if requested)
- Were never informed of charges through a statement of account
- Had a Direct Debit but it was set too low to cover the actual charges
When You May Be Asked to Pay for Energy Consumed More Than 12 Months Ago
The only scenario where you could be charged for older energy usage is if the issue is deemed to be your fault. For example, if you deliberately prevented meter access or ignored billing requests, your supplier can back-bill you for up to six years.

What to Do if You Get a Back Bill
1. Confirm whether your usage falls within the 12-month limit:
o If it does not, and the supplier is at fault, you are not obligated to pay for older charges.
2. Contact your broker or directly contact the supplier:
o If you use a broker, they should be able to handle this on your behalf, verifying which charges do need to be paid.
o If you need to contact the supplier directly, let them know you’re protected under Ofgem’s rules and request a revised bill.
3. Keep records:
o Save bills, emails with your supplier, and photos of meter readings. These can be necessary if a dispute arises.
How SeeMore Energy Can Support You
We recognise the stress that incorrect billing can bring. At SeeMore Energy, we go beyond advice:
- We help you analyse contract terms, standing charges, Direct Debit levels, and usage profiles to ensure accuracy from the start.
- Should a back bill arise, we guide you through each step: Whether negotiating with the supplier or escalating to ombudsmen.
- Our industry insight means you don’t just deal with the bill -- you understand it. Allowing for both budgeting and efficiency.
We are also currently offering a Free Trial for our Bill Validation Service where each month we ensure every part of your invoices are correct.
Tips to Avoid Back Bills in the Future
- Get a smart meter: It allows the supplier to receive direct readings without the need for estimates and manual reads. Many suppliers will offer smart meter upgrades without charge.
- Submit regular readings: If you don’t have a smart meter, record and send your usage consistently – preferably on the last day of the month.
- Review all bills carefully or use a Bill Validation service: Check meter numbers, usage, dates, and charges. Be aware of which Non-commodity charges you should pay, how they are calculated, and when they change. This is especially important after a move or supplier change.
- Keep your supplier informed: Notify them if you move, change meters, or need to revise a Direct Debit in light of actual usage.
In Conclusion
By staying informed, asserting your rights, and leaning on expert support, you can turn confusion into clarity. If you're unsure of your rights or how to act, contact us today at SeeMore Energy, and we will help you with any billing issues you may have.





