| Energy Bills |
The cheapest energy tariff in the UK for 2026 depends on your usage and region. Compare fixed, variable, tracker, and solar tariffs. The price cap for typical use is £1,663 from July to September 2026, rising to £1,723 from October.
The cheapest energy tariff in 2026 varies by usage and region; compare fixed, variable, tracker, and solar options, and note the price cap rises to £1,723 from October 2026.
KEY FACTS
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LAST REVIEWED 2026-09-06
What is the cheapest energy tariff in the UK for 2026?
The cheapest energy tariff in the UK for 2026 depends on your location, usage, and meter type. Fixed deals are often cheaper than the price cap, but variable tariffs track the cap. Compare offers from suppliers to find the lowest rate for your household.
Energy tariffs are priced per unit (pence per kWh) plus a daily standing charge. Suppliers set different rates for electricity and gas, and some offer dual fuel discounts.
To find the cheapest tariff, use comparison sites or check supplier websites. Enter your postcode and annual energy usage (found on your bill). Compare the estimated annual cost, not just the unit rate, because standing charges vary. Also check exit fees and whether the tariff is fixed or variable.
Check the tariff's end date and any notice period. If you are on a standard variable tariff, you can switch anytime without penalty. If you are on a fixed deal, you may pay exit fees if you leave early. Always read the terms before switching.
How does the Ofgem price cap affect the cheapest tariff in 2026?
The Ofgem price cap sets a maximum rate per kWh and standing charge for default tariffs. For typical use (2,500 kWh electricity, 9,500 kWh gas), the cap is £1,663 from July to September 2026, rising to £1,723 from October to December 2026.
The cap is not a cap on your total bill; it caps the unit rates and standing charges. If you use more than typical, your bill will be higher. The cap changes every three months, reflecting wholesale energy costs. Suppliers can price below the cap, so fixed deals may be cheaper.
When comparing tariffs, compare against the current cap. If a fixed deal is below the cap, it may be cheaper for a year. But if wholesale prices fall, the cap may drop, making a variable tariff cheaper later. Consider your risk tolerance.
Check the cap level for your region and payment method. The cap figures are for typical use and direct debit. If you pay by prepayment meter or standard credit, the cap is different. Always compare like-for-like.
| Scheme | Amount | Who / when | Source |
|---|---|---|---|
| Warm Home Discount | see GOV.UK (figure not yet confirmed) | £ one-off winter 2026/27 payment, from GOV.UK | GOV.UK |
| Cold Weather Payment | £25 | per 7-day period of freezing weather, 1 Nov to 31 Mar | GOV.UK |
| Winter Fuel Payment | see GOV.UK (figure not yet confirmed) | winter 2026/27 amounts and eligibility from GOV.UK | GOV.UK |
| Boiler Upgrade Scheme | see GOV.UK (figure not yet confirmed) | £ grant for air source heat pump, GOV.UK | GOV.UK |
What is the difference between fixed and variable tariffs?
A variable tariff, like the standard variable, can change when the price cap changes. Fixed tariffs offer price certainty, while variable tariffs follow the market.
Fixed tariffs are often cheaper than the price cap for the first year, but if wholesale prices fall, you may end up paying more than a variable customer. Variable tariffs can go up or down every three months. Fixed tariffs usually have exit fees, while variable tariffs do not.
Consider your budget and risk. If you prefer predictable bills, a fixed tariff may suit. If you are comfortable with fluctuations, a variable tariff might be cheaper if prices fall. Compare the fixed rate against the current cap and projected changes.
Check the length of the fix and any exit fees. Some fixed tariffs have a 'trailing' period after the fix ends, converting to a variable tariff. Always read the terms to know what happens at the end.
What are tracker energy tariffs and how do they work?
Tracker tariffs follow the wholesale energy price, usually with a set margin added. They can be cheaper than fixed tariffs when wholesale prices are low, but they can also rise sharply. Tracker tariffs are less common in 2026 but still available from some suppliers.
Tracker tariffs are typically linked to a wholesale index, such as the day-ahead or month-ahead gas price. The unit rate changes monthly or quarterly. The supplier adds a fixed margin to cover costs. Your bill varies with the market.
Tracker tariffs can offer savings when wholesale prices fall, but they carry risk. If wholesale prices spike, your bill could increase significantly. Compare the tracker's current rate and margin against fixed and variable tariffs. Consider your ability to handle bill fluctuations.
Check the terms: how often the rate changes, the index used, and any cap on the rate. Some trackers have a maximum price. Also check exit fees and notice periods. Tracker tariffs are not for everyone.
What are solar tariffs and how can they reduce energy bills?
Solar tariffs are for households with solar panels. They offer a higher rate for exporting excess electricity to the grid, often called a 'smart export guarantee' (SEG). Some suppliers also offer cheaper import rates for solar customers.
Solar tariffs work by paying you for the electricity you export. The SEG rate varies by supplier, typically between 1p and 15p per kWh. Some tariffs offer a higher export rate if you also buy electricity from the same supplier. Others offer a time-of-use tariff, allowing you to use cheap electricity when your panels are not generating.
To benefit, you need solar panels and a smart meter. Compare export rates and import rates. A higher export rate may be offset by a higher import rate. Consider your generation and usage patterns. If you are at home during the day, you may use more of your solar power, reducing your import.
Check if the tariff requires a specific meter or installation. Some suppliers require a smart meter to measure exports. Also check the contract length and any exit fees. Solar tariffs can reduce bills, but the savings depend on your system.
What are social tariffs and who is eligible?
Social tariffs are discounted energy deals for vulnerable households, such as those on low incomes or with certain health conditions. They are not widely available in 2026, but some suppliers offer them. Eligibility varies by supplier.
Social tariffs typically offer a lower unit rate or a discount on your bill. They are designed to help those struggling to pay. Suppliers may require proof of income or benefits. Some schemes are funded by the government, such as the Warm Home Discount, which provides a one-off payment (amount not yet confirmed for winter 2026/27).
To find out if you qualify, contact your supplier or check their website. You may need to be on a low income, receive certain benefits, or be in a vulnerable situation. Some suppliers offer a 'priority services register' for extra support.
Check the eligibility criteria and how to apply. Social tariffs are not automatic; you must apply. Also check if you are eligible for other support, such as the Cold Weather Payment of £25 per 7-day period of freezing weather. These can help reduce your overall energy costs.
| Cap period | Typical dual fuel, Direct Debit | Change | Source |
|---|---|---|---|
| Jul to Sep 2026 | £1,663 | Ofgem | |
| Oct to Dec 2026 | £1,723 | 4% | Ofgem |
| From 1 Jan 2027 | to be announced late November 2026 | Ofgem |
What is a feed-in tariff and is it still available?
The feed-in tariff (FIT) scheme closed to new applicants in 2019. Existing FIT recipients continue to receive payments, but new solar or wind installations cannot join. The scheme paid for electricity generated and exported.
FIT payments were based on the size of your installation and the date it was installed. Payments were made for 20 years. If you have a FIT, you receive a generation tariff and an export tariff. The export tariff is now replaced by the smart export guarantee for new applicants.
If you are considering solar panels, you cannot get a FIT. Instead, you can get a smart export guarantee (SEG) from a supplier. SEG rates vary, and you must have a smart meter. Compare SEG rates to maximise your export income.
Check if your existing FIT payments are correct. The rates are set by Ofgem and may be adjusted. If you have a FIT, you do not need to switch to a SEG. But if you are adding new panels, they may not be eligible for FIT.
What happens when the energy tariff ends?
When a fixed tariff ends, you are usually moved to the supplier's standard variable tariff (SVT), which is often more expensive. You are not automatically switched to a new deal. You must actively switch or renew to avoid paying more.
This notice includes your new rate and how to switch. You can switch to a new tariff with the same supplier or a different one. If you do nothing, you will be on the SVT, which is capped by Ofgem.
To avoid a price rise, compare tariffs before your current deal ends. Consider fixed deals that may be cheaper than the SVT. Also check if your supplier offers a renewal deal.
Check the end date on your bill or online account. Set a reminder to compare tariffs a few weeks before. If you miss the window, you can still switch, but you may pay exit fees if you are on a fixed tariff. Always compare the total cost.
How to compare and switch energy supplier in 2026
To compare energy tariffs, use a comparison website or the supplier's own site. You need your postcode and annual energy usage in kWh. The comparison will show estimated annual costs for different tariffs.
When comparing, look at the total annual cost, not just the unit rate. Standing charges vary, so a low unit rate may not be the cheapest. Also check the tariff's length, exit fees, and whether it is fixed or variable. Some tariffs offer incentives like gift cards, but these may not be the best value.
Switching is straightforward. Your new supplier handles the switch, and you do not need to contact your old supplier. You will receive a final bill from your old supplier. There is no interruption to your supply.
Check if you are in a contract with exit fees. If you are, you may have to pay them. Some suppliers waive exit fees if you switch within a certain period. Also check your meter readings before switching to ensure accurate billing.
What is driving switching volumes in 2026?
Switching volumes in 2026 are driven by price cap changes and the availability of cheaper fixed deals. The cap rose to £1,723 in October 2026, prompting many to seek fixed tariffs below the cap.
Wholesale energy prices have been volatile, leading to competitive fixed deals. Suppliers are offering fixed tariffs at rates below the cap to attract customers. Additionally, the introduction of new tariffs, such as tracker and solar, gives consumers more choice.
Government schemes, such as the Warm Home Discount and Cold Weather Payment, also influence switching. Consumers may switch to suppliers that offer additional benefits, such as priority services or smart meter incentives. The rise in smart meter installations enables more accurate billing and access to time-of-use tariffs.
Check the latest switching statistics from Ofgem. The number of switches is expected to increase as more deals become available. However, some consumers remain on standard variable tariffs due to inertia. Comparing tariffs regularly can help you save.
How do smart meters affect tariff access?
Smart meters enable access to tariffs that require half-hourly or real-time data, such as time-of-use tariffs and some tracker tariffs. They also allow for accurate billing and remote readings.
Many suppliers offer smart tariffs that reward off-peak usage. For example, an economy 7 tariff gives cheaper electricity at night. Smart meters are required for these tariffs. They also enable the smart export guarantee for solar customers.
If you do not have a smart meter, you may be limited to standard tariffs. Some suppliers require a smart meter for certain deals. You can request a smart meter from your supplier at no extra cost. The installation is free, and you can still switch suppliers.
Check if your current tariff requires a smart meter. If you are on a standard variable tariff, you can switch to a smart tariff. Smart meters also help you monitor your usage, which can help you reduce consumption. However, smart meters are not mandatory.
Glossary: the terms on an energy bill explained
Price cap: The maximum amount suppliers can charge per kWh and standing charge for default tariffs, set by Ofgem every three months.
Standard variable tariff: A default energy tariff with no fixed end date, often the most expensive, but capped by Ofgem.
Tracker tariff: A tariff that follows wholesale energy prices, with a set margin added, causing bills to fluctuate.
Smart export guarantee: A scheme that pays households for excess electricity exported to the grid, replacing the feed-in tariff for new installations.
Feed-in tariff: A government scheme closed to new applicants in 2019, paying for electricity generated and exported from renewable installations.
Disclaimer. This guide is editorial information drawn from primary sources. It is not financial, legal or tax advice and does not recommend any provider. Figures are those published by the named sources on the review date and may change. Kael Tripton Ltd receives no commission, referral fee or lead payment from any provider named on this page. |
Frequently asked questions
What is the cheapest energy tariff in the UK for 2026?
The cheapest tariff depends on your usage and region. Fixed deals are often cheaper than the price cap, which is £1,663 from July to September 2026 and £1,723 from October to December 2026. Compare tariffs using a comparison site to find the lowest annual cost for your household.
How often does the energy price cap change?
The Ofgem price cap changes every three months: in January, April, July, and October. The cap for typical use is £1,663 from July to September 2026, rising to £1,723 from October to December 2026. The cap for January 2027 will be announced in late November 2026.
Can I switch energy supplier if I am on a fixed tariff?
Yes, you can switch, but you may have to pay exit fees if you leave before the fixed term ends. Exit fees are typically £25 per fuel. Check your contract for details.
What is a tracker energy tariff?
A tracker tariff follows wholesale energy prices, usually with a set margin added. The rate can change monthly or quarterly. It can be cheaper than fixed tariffs when wholesale prices are low, but it carries risk if prices rise. Not all suppliers offer tracker tariffs.
How do I get a smart meter?
You can request a smart meter from your energy supplier at no extra cost. The installation is free, and you can still switch suppliers. Smart meters enable access to time-of-use tariffs and the smart export guarantee for solar customers.
What is the Warm Home Discount?
The Warm Home Discount is a one-off payment to help with energy costs during winter. The amount for winter 2026/27 is not yet confirmed. Eligibility is usually based on income and benefits. Contact your supplier or check GOV.UK for details.
