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Check your meter readings
The first thing to do is compare your latest bill with your actual meter readings. If your supplier has estimated your usage, the bill may be higher than it should be. Taking a fresh reading helps you see whether the charge matches what you have used.
Look at both gas and electricity meters and note the figures carefully. If you have a smart meter, check whether it is sending readings correctly, as a fault can lead to estimated bills. Send your supplier the readings if they are not up to date.
Review your tariff and unit rates
Your bill may have gone up because your tariff changed. Check whether you are on a fixed deal, a variable tariff, or a default rate, as each can affect the price you pay. If a fixed term ended, you may have moved onto a more expensive standard variable tariff.
Look at the unit rate and standing charge on your bill. Even if you use the same amount of energy, higher rates can increase your costs. Comparing the latest bill with your previous one can help you spot where the rise has happened.
Check your usage patterns
Sometimes higher bills are caused by using more energy rather than a problem with the bill itself. Colder weather, more time at home, or using heating for longer can all increase gas use. Extra appliances, tumble dryers, or more cooking can also raise electricity consumption.
Compare your usage month by month if your supplier gives you a breakdown. This can show whether the increase happened at a specific time, such as during winter or after a change in household routine. It is often easier to identify the cause once you look at the pattern.
Look for billing errors
It is worth checking whether the bill includes an error. Make sure your meter number, tariff details, and opening balance are correct. A simple mistake, such as the wrong meter reading or an estimated opening figure, can lead to a higher charge.
If you have moved home recently, check that the supplier has used the correct start date and final reading. Bills can also be affected by adjustments from earlier periods. If anything looks wrong, contact your supplier and ask for a full explanation.
Ask your supplier for a breakdown
If you still cannot see why the bill increased, ask your supplier for a detailed breakdown. They should explain how the total was worked out, including unit rates, standing charges, and any back-billing or credits. This can help you understand whether the increase is due to usage, pricing, or an error.
Keep a record of your meter readings, bills, and any messages you send. If the issue is not resolved, you can escalate it through the supplier’s complaints process. You may also be able to seek help from the Energy Ombudsman if the problem remains unresolved.
Frequently Asked Questions
Bills can rise because of higher unit rates, increased standing charges, more usage, seasonal demand, or a switch to a more expensive tariff. Check your latest meter readings, tariff details, and any changes in your household usage to identify the cause.
Compare the current bill with the previous one, looking at unit rates, standing charges, estimated versus actual readings, and total energy used. This often reveals whether the increase came from pricing, usage, or an error.
Common reasons include higher consumption, price cap changes, variable tariff increases, meter estimation corrections, colder weather, new appliances, or billing errors. Reviewing each of these can help pinpoint the cause.
Yes. If the supplier estimated low usage before, a later actual reading can cause a sudden catch-up charge. Verify your meter readings against the bill to see if this happened.
Yes. If you moved from a fixed deal to a variable tariff, or if a fixed contract ended, your rates may have increased. Check your account for tariff expiry dates and the current pricing plan.
Standing charges are fixed daily fees that apply even if you use little energy. If they rise, your bill can increase even when your usage stays the same.
Colder weather usually increases gas heating use, and darker months can increase electricity use for lighting and appliances. Seasonal demand is a very common reason bills rise.
Yes. A faulty meter can over-record usage or send incorrect readings. If your bill seems unusually high, ask your supplier to test the meter and compare readings with your actual consumption.
New appliances, older inefficient devices, or longer usage hours can raise energy consumption. Heating, water heaters, tumble dryers, and electric ovens are often major contributors.
Previous occupants may have used more energy, estimated opening readings may be wrong, or the property may be less efficient than expected. Confirm your opening meter readings and tariff details.
Review the bill for duplicate charges, wrong meter numbers, incorrect unit rates, or estimated readings. If something looks wrong, contact the supplier and request a corrected bill.
Yes. Suppliers may pass on higher wholesale costs through tariffs or price cap adjustments. Even if your usage stays the same, market changes can raise your bill.
Direct debit amounts are often based on estimated annual usage, so they may not match actual bills each month. If your usage rises, your account may need a payment adjustment.
Check your units consumed and compare them with previous bills. If usage is similar but the amount is higher, the issue is likely rates or charges; if units increased, it is likely consumption.
Yes. Smart meters can sometimes stop sending readings or send faulty data, which may lead to estimated or incorrect bills. Check the meter display and ask the supplier to investigate if needed.
Start by checking the bill against your meter readings, comparing it with previous bills, and reviewing tariff changes. This quickly shows whether the cause is usage, pricing, or an error.
Poor insulation, draughts, old boilers, inefficient heating controls, and heating leaks can all increase energy use. Improving efficiency often reduces future bills.
Yes. Longer showers, higher thermostat settings, leaving lights on, using tumble dryers more often, or working from home can all increase consumption and raise bills.
Contact your supplier if the bill is far higher than expected, meter readings do not match, charges look wrong, or you suspect a faulty meter. Ask for a breakdown and a review of the account.
Once you identify the reason, you can lower costs by adjusting heating use, improving insulation, switching to a better tariff if available, fixing billing issues, and reducing waste from appliances.
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