The energy price cap is one of those phrases that arrives on the news every three months, usually followed by a number and an argument. What it rarely comes with is a plain explanation: what the cap actually is, why it moves, and what you are supposed to do about it.
So here is the short version before Ofgem's next quarterly announcement. The cap does not cap your bill. It caps the price you pay for each unit of gas and electricity, plus the daily standing charge, on a standard variable tariff. Use more and you pay more. That distinction decides what actually leaves your bank account, and it matters far more than any headline figure.
What the price cap actually is
Ofgem, the energy regulator, sets the cap for households in England, Scotland and Wales. Northern Ireland runs its own arrangements, so the numbers you see in the UK press generally do not apply there.
The cap limits what suppliers can charge customers on their default, or standard variable, tariff. That is the tariff you end up on if you have never switched, or if a fixed deal ended and you did nothing about it. It exists as a safety net for the people least likely to shop around.
Two things follow. First, the cap is a ceiling on prices, not a subsidy — the bill still arrives. Second, the big number in the headlines is an illustration, calculated for a household using a typical amount of energy based on national averages. If you use less than that, you pay less than the figure quoted. If you heat a draughty four-bedroom house with the thermostat at 23°C, you will pay considerably more.
How the quarterly announcement works
Ofgem reviews the cap four times a year. New levels generally take effect on 1 January, 1 April, 1 July and 1 October, with the announcement landing a few weeks beforehand. That is why the same story reappears each quarter with a different number in it.
The level is set by a formula rather than by ministers, which is worth remembering when politicians claim credit or assign blame. The formula is built from several moving parts.
What goes into the number
- Wholesale energy costs. The largest and most volatile element, based on forward prices for gas and electricity over a set period rather than the price on any single day.
- Network costs. What it costs to move energy around the country and maintain the pipes and wires.
- Operating costs. Billing, metering, customer service and the rest of the machinery behind your account.
- Government schemes. Obligations such as support for renewable generation and energy efficiency programmes, which suppliers fund and recover through bills.
- VAT. Domestic energy is charged at 5%, below the standard rate.
- A margin allowance. A modest amount for supplier profit and for absorbing price shocks.
Wholesale prices feed into the cap with a lag of several months. A quiet week in the markets will not change your April bill, and a spike in October will not show up until later in the winter.
What the cap covers, and what it does not
The cap sets a maximum unit rate — the pence per kilowatt hour you pay for gas and electricity — and a maximum daily standing charge. Prepayment meter customers have a separate cap, with standing charges brought into line with those on direct debit.
It does not cover your total bill. It does not apply to fixed tariffs, which can sit above or below the cap and are not automatically the worse option. It does not apply to business energy contracts. And it says nothing about how much energy you use, which for most households is the single biggest lever on the final figure.
Standing charges irritate people most, particularly low users. You pay them whether you use any energy or not, and they have climbed sharply in recent years. Ofgem has been pressing suppliers to widen the choice of tariffs, including options with lower or zero standing charges, though those usually come with a higher unit rate. If your gas use is minimal, it is worth asking what is available.
Six things to do before the next announcement
- Take a meter reading the day before the change. If you do not have a smart meter, this stops your supplier billing estimated usage at the new rate.
- Work out which tariff you are on. Standard variable, or a fix? If it is a fix, note the end date now rather than discovering it when it lapses.
- Compare fixed deals with the current cap. A fix below the expected cap can be worth taking. A fix slightly above it can still suit you if certainty matters more than squeezing out the last few pounds. Check exit fees and standing charges, not just the unit rate.
- Review your direct debit. If you are building up credit month after month, ask for the payment to be recalculated. If you are sliding into arrears, deal with it before it hardens into debt.
- Check what you are entitled to. The Warm Home Discount, Pension Credit, Council Tax Reduction and supplier hardship funds are all worth ten minutes with a laptop. The Priority Services Register provides extra support if someone in the household is disabled, chronically ill or relies on medical equipment.
- Cut usage where it is free to do so. Draught-proofing, bleeding radiators, closing curtains at dusk, washing at 30°C, skipping the tumble dryer, shorter showers, boiling only what you need. Leave anything that costs money to save money until the free things are done.
If you are behind on payments
Contact your supplier early. They are required to work with you on a payment plan, and they have more options than most people assume, from repayment schedules to hardship funds. Do not cancel a direct debit in protest; it usually makes things worse and can affect your credit file.
Free, independent advice is available from Citizens Advice, StepChange and National Debtline. Take it before you borrow to pay an energy bill, and be wary of anyone who charges for debt advice. If a decision touches your mortgage, your benefits or a long-standing financial arrangement, a regulated adviser is worth the conversation.
The ten-minute version
Before the next announcement: read your meter, check your tariff, put your usage into a comparison site, and look up whether you qualify for a discount you have never claimed. That is the whole job, and none of it requires switching supplier or risking anything.
Then
Photo: andreas160578 / Pixabay
