The Money Your Energy Supplier Is Sitting On

Energy bills have a way of making people feel either smug or skint, often in the same week. In November 2026, plenty of UK households will log in to their supplier’s app and find a credit balance sitting there like a small, confusing prize. It might be £80. It might be £400. Either way, it is your money — but it is not quite in your pocket.

A credit balance is not automatically a problem. Energy accounts swing with the seasons, and a buffer can stop a cold snap turning into a cash-flow drama. The trick is knowing whether your balance is doing a useful job or whether you have accidentally set up a savings account for your supplier, with zero interest and no withdrawal card.

Why there’s a pile of credit in the first place

Most of us pay by monthly direct debit. Suppliers like that because it smooths out the year: you pay more than you use in summer, then less than you use in winter. By the time November arrives, that summer surplus can look quite healthy.

There are other reasons too. Estimated meter readings can leave you paying for energy you have not used yet — or not paying for energy you have. A fixed direct debit that was set during a cheaper tariff can also leave you overpaying if your usage has dropped. And if you switched supplier or tariff, an old credit balance can follow you around like a stray receipt.

The key point is simple: a credit balance is not a badge of honour. It is a timing thing. The question is whether the timing still suits you.

The buffer rule: what to leave behind

Before you ask for a refund, work out a sensible floor. My suggestion is a buffer rule: keep roughly one typical winter month’s energy bill, plus £50. Refund anything above that.

So if your winter bill tends to be around £160, leave about £210 in the account and ask for the rest. That leaves you with a cushion for the first properly cold month, but it stops the balance becoming a permanent loan to your supplier.

If your account is already below that floor, do not chase a refund just because the number looks refundable. A small credit in November is not a windfall; it is winter insurance. And if you are on a prepayment meter, the logic is different — you are usually managing credit in a more direct way, so focus on keeping enough topped up rather than chasing a traditional account refund.

The 15-minute check before you call

You can do this with a cup of tea and your phone. First, submit an up-to-date meter reading if you have a smart meter that is not sending reads properly, or a traditional meter. Suppliers can only refund against a balance they trust, and estimated readings make that harder.

Second, find your latest statement or app screen. Note the credit balance, your current direct debit amount, your tariff end date and your usage for the last few months. Third, check whether you are on a fixed or variable tariff. If your fix is ending soon, be a little more cautious about emptying the account.

Finally, decide your numbers before you dial. Know what you want to leave behind and what you want back. That single step makes the call much less waffly.

A 15-minute phone script

You do not need to be confrontational. You just need to be clear. Try something like this:

1. ‘Hi, I’d like to review the credit balance on my energy account.’
2. ‘My latest meter reading is [reading], and my current balance is [amount].’
3. ‘Based on my usage, I’d like to request a refund of [amount] and leave [amount] in the account as a winter buffer.’
4. ‘Can you confirm whether that refund will go back to my bank account, and how long it should take?’
5. ‘I’d also like my direct debit reviewed so it matches my expected winter usage. Can you tell me the new monthly amount and when it starts?’
6. ‘If you can’t refund that amount, could you explain why in writing?’

That last line matters. A verbal ‘no’ is easy to give. A written explanation is slightly harder, and it gives you something to refer back to if you need to complain.

If they say no

Suppliers can have reasons to push back — for example, if the balance is needed to cover an upcoming winter period, or if there is a payment arrangement in place. That does not mean you have to accept a vague answer. Ask for the reasoning, ask for a review, and keep a note of dates and names.

If you are still stuck, use the supplier’s formal complaints process. If it is not resolved, you can take it to the Energy Ombudsman. Do not cancel your direct debit in frustration. That can create arrears and make the whole situation messier.

Reset the direct debit, not just the balance

A refund without a direct debit review is only half the job. If your monthly payment is too high, the credit will simply rebuild. Ask your supplier to recalculate it using your actual usage and the months ahead. Then check the first new payment like a hawk.

A good outcome is boring: a refund in your bank account, a buffer left in the energy account, and a direct debit that feels realistic for winter. No drama, no heroics, just your money doing what you intended.

Your supplier’s savings account is not a savings account. It is your cash, held on account. In November 2026, it is worth a 15-minute check to make sure the balance is working for you — not just sitting there.