What is a Dual Fuel Energy Tariff and How Does it Work?

September 5th, 2025
What is a Dual Fuel Energy Tariff and How Does it Work?

A dual fuel tariff is a plan that combines gas and electricity supply from one energy supplier. This means you get one bill for both gas and electricity. It makes your payments easier. You also have one point of contact for customer service, which helps manage your energy account better. About 70% of homes in the UK use dual fuel energy tariffs. These plans can offer better savings and convenience than separate gas and electricity tariffs.

Dual fuel tariffs can give you a good idea of what you will pay. This is especially true if you pick a fixed deal. A fixed dual fuel tariff keeps your rates the same for 12 to 24 months. This helps guard you against price hikes in the energy market. If you want a dual fuel energy deal, be sure to compare rates often. This way, you can find the cheapest option available.

Top 20 Cheapest Dual Fuel Tariffs Available Now

Finding the cheapest dual fuel tariffs can help you save money on your energy bill. Here’s a look at the top 20 dual fuel energy tariffs you can find right now:

Supplier Name Tariff Name Electricity Unit Rate Gas Unit Rate Electricity Standing Charge Gas Standing Charge Start Date End Date
100Green Exclusive Spring 100% Green 12M December 25 0.212 0.07665 0.6153 0.29967 01/12/2024 31/12/2025
100Green Exclusive Spring 100% Green 12M December 25 0.21998 0.07665 0.58182 0.29967 01/12/2024 31/12/2025
100Green Exclusive Spring 100% Green 12M December 25 0.22176 0.07665 0.63075 0.29967 01/12/2024 31/12/2025
Affect Energy Affect Loyal 12M Fixed September 2023 v1 0.2652 0.06825 0.53958 0.2747 20/10/2023 20/10/2024
Affect Energy Affect Loyal 12M Fixed September 2023 v1 0.26577 0.06816 0.55388 0.2747 20/10/2023 20/10/2024
Affect Energy Affect Loyal 12M Fixed September 2023 v1 0.26759 0.06765 0.48665 0.2747 20/10/2023 20/10/2024
Boost Power Smart PAYG+ 0.22365 0.06006 0.72093 0.3173 01/10/2024 -
Boost Power Traditional PAYG 0.22365 0.06006 0.72093 0.3173 01/10/2024 -
Boost Power Smart PAYG+ 0.22365 0.06006 0.72093 0.3173 01/10/2024 -
British Gas Fixed Aug25 v1 0.21216 0.05452 0.67093 0.31192 01/08/2024 01/09/2025
British Gas Fixed Tariff 12M v8 0.21216 0.05452 0.67093 0.31192 01/08/2024 01/08/2025
British Gas Fixed Aug25 v1 0.21279 0.05465 0.70862 0.31215 01/08/2024 01/09/2025
Bulb Octopus Key and Card 0.2045 0.05237 0.65382 0.29501 01/07/2024 -
Bulb Octopus Key and Card 0.2051 0.05257 0.6915 0.29521 01/07/2024 -
Bulb Octopus Key and Card 0.2088 0.05127 0.53947 0.29049 01/07/2024 -
Co-op Energy Octopus Key and Card 0.2045 0.05237 0.65382 0.29501 01/07/2024 -
Co-op Energy Octopus Key and Card 0.2051 0.05257 0.6915 0.29521 01/07/2024 -
Co-op Energy Octopus Key and Card 0.2088 0.05127 0.53947 0.29049 01/07/2024 -
E (Gas & Electricity) Easy 0.22281 0.05985 0.71987 0.31678 01/10/2024 -
E (Gas & Electricity) Easy 0.22281 0.05985 0.71987 0.31678 01/10/2024 -
E (Gas & Electricity) Easy 0.22607 0.05964 0.68207 0.31667 01/10/2024 -
E.ON Next Next Fixed 12m v33 0.20199 0.05977 0.72102 0.31736 18/11/2024 18/11/2025
E.ON Next Next Fixed 12m v33 0.20199 0.05977 0.72102 0.31736 18/11/2024 18/11/2025
E.ON Next Next Fixed 12m v28 0.20389 0.05568 0.72102 0.31736 04/10/2024 04/10/2025
Ebico Co-op 12M Fixed November 2024 v2 0.2105 0.05795 0.70048 0.29679 29/11/2024 29/11/2025
Ebico Co-op 12M Fixed November 2024 v2 0.21352 0.05913 0.66262 0.29673 29/11/2024 29/11/2025
Ebico Co-op 12M Fixed July 2024 v1 0.21378 0.05443 0.69142 0.29515 07/08/2024 07/08/2025
Ebico Living Ebico Loyal Prime 12 Saver February 2024 v3 0.23354 0.06027 0.69142 0.29515 26/02/2024 26/02/2025
Ebico Living Ebico Loyal Prime 12 Saver February 2024 v3 0.23354 0.06014 0.65373 0.29495 26/02/2024 26/02/2025
Ebico Living Ebico Standard 0.2351 0.06321 0.72042 0.31698 01/01/2025 -
Economy Energy my london top-up plan 0.2415 0.06213 0.61277 0.28721 01/01/2025 -
Economy Energy my london top-up plan 0.2474 0.06067 0.47863 0.28951 01/01/2025 -
Economy Energy my london top-up plan 0.2477 0.06028 0.54847 0.28879 01/01/2025 -
Ecotricity Domestic Smart 1 Year Fixed Green Tariff Feb 25 0.20286 0.06353 0.55567 0.39523 10/03/2025 10/03/2026
Ecotricity Domestic Smart 1 Year Fixed Green Tariff Feb 25 0.20486 0.06206 0.57318 0.37748 10/03/2025 10/03/2026
Ecotricity Domestic Smart 1 Year Fixed Green Tariff Feb 25 0.20496 0.06405 0.53392 0.40225 10/03/2025 10/03/2026
EDF Energy Energy Direct Mar24v2 0.17934 0.03607 0.26817 0.26587 25/08/2021 31/03/2024
EDF Energy Simply Online Mar24 0.17945 0.0361 0.26828 0.26595 12/08/2021 31/03/2024
EDF Energy Simply Online Mar24v2 0.18113 0.03652 0.26828 0.26595 16/08/2021 31/03/2024
Future Energy Easy 0.22281 0.05985 0.71987 0.31678 01/10/2024 -
Future Energy Easy 0.22281 0.05985 0.71987 0.31678 01/10/2024 -
Future Energy Easy 0.22607 0.05964 0.68207 0.31667 01/10/2024 -
GnERGY Traditional PAYG 0.22365 0.06006 0.72093 0.3173 01/10/2024 -
GnERGY Smart PAYG+ 0.22365 0.06006 0.72093 0.3173 01/10/2024 -
GnERGY Smart PAYG+ 0.22365 0.06006 0.72093 0.3173 01/10/2024 -
Good Energy Good Energy Standard (Smart EV) 0.2305 0.0723 0.7264 0.30689 01/04/2024 -
Good Energy Good Energy Standard 0.2305 0.0723 0.7264 0.30689 01/04/2024 -
Good Energy Good Energy Standard (Smart EV) 0.2305 0.0723 0.7264 0.30689 01/04/2024 -
Green Network Energy Next Fixed 12m v33 0.20199 0.05977 0.72102 0.31736 18/11/2024 18/11/2025
Green Network Energy Next Fixed 12m v33 0.20199 0.05977 0.72102 0.31736 18/11/2024 18/11/2025
Green Network Energy Next Fixed 12m v28 0.20389 0.05568 0.72102 0.31736 04/10/2024 04/10/2025
Home Energy Fair Variable Dual 0.18724 0.06301 0.72088 0.31727 18/02/2025 -
Home Energy Fair Variable Dual 0.18724 0.06301 0.72088 0.31727 18/02/2025 -
Home Energy Fair Variable Dual 0.19064 0.06293 0.68302 0.31716 18/02/2025 -
LECCY Wren 9 0.23186 0.06224 0.7205 0.31713 01/10/2024 -
LECCY Wren 9 0.23506 0.06212 0.6827 0.31704 01/10/2024 -
LECCY Standard Variable 0.2351 0.06321 0.72042 0.31698 01/01/2025 -
London Power my london top-up plan 0.2415 0.06213 0.61277 0.28721 01/01/2025 -
London Power my london top-up plan 0.2474 0.06067 0.47863 0.28951 01/01/2025 -
London Power my london top-up plan 0.2477 0.06028 0.54847 0.28879 01/01/2025 -
Octopus Energy Octopus Price Promise July 2021 v1 0.1743 0.03098 0.25652 0.2543 26/07/2021 -
Octopus Energy Octopus Price Promise July 2021 v1 0.17504 0.03161 0.23322 0.2543 26/07/2021 -
Octopus Energy Octopus Price Promise July 2021 v1 0.17598 0.03077 0.25295 0.2543 26/07/2021 -
Outfox the Market ECO7 Variable v1 0.16923 0.02522 0.23218 0.26075 03/03/2021 -
Outfox the Market ECO7 Variable v1 0.1709 0.02525 0.20183 0.26075 03/03/2021 -
Outfox the Market ECO7 Variable v1 0.17135 0.02569 0.21486 0.26075 03/03/2021 -
OVO Energy 1 Year Fixed Loyalty 27 September 2024 0.2086 0.056 0.67304 0.29411 27/09/2024 27/09/2025
OVO Energy 1 Year Fixed + Greener Electricity 27 September 2024 0.20864 0.05597 0.89218 0.29412 10/10/2024 10/10/2025
OVO Energy 1 Year Fixed 03 October 2024 0.20864 0.05891 0.67327 0.29432 03/10/2024 03/10/2025
Power NI Octopus Price Promise July 2021 v1 0.1743 0.03098 0.25652 0.2543 26/07/2021 -
Power NI Octopus Price Promise July 2021 v1 0.17504 0.03161 0.23322 0.2543 26/07/2021 -
Power NI Octopus Price Promise July 2021 v1 0.17598 0.03077 0.25295 0.2543 26/07/2021 -
Rebel Energy Wren 9 0.23186 0.06224 0.7205 0.31713 01/10/2024 -
Rebel Energy Wren 9 0.23506 0.06212 0.6827 0.31704 01/10/2024 -
Rebel Energy Standard Variable 0.2351 0.06321 0.72042 0.31698 01/01/2025 -
Sainsbury's Energy Sainsburys Fix and Reward Fixed 12m v28 0.20722 0.05646 0.72102 0.31736 04/10/2024 04/10/2025
Sainsbury's Energy Sainsburys Fix and Reward Fixed 12m v28 0.21043 0.05633 0.68319 0.31727 04/10/2024 04/10/2025
Sainsbury's Energy Sainsburys Fix and Reward Fixed 12m v30 0.21105 0.0627 0.68319 0.31727 18/10/2024 18/10/2025
Scottish Power Help Beat Cancer Green Fixed December 2023 CH1 0.19321 0.04475 0.38326 0.36445 25/08/2021 31/12/2023
Scottish Power Help Beat Cancer Green Fixed December 2023 CH1 Online 0.19321 0.04475 0.38326 0.36445 25/08/2021 31/12/2023
Scottish Power Help Beat Cancer Green Fixed December 2023 CH1 Online 0.19409 0.04534 0.3589 0.36445 25/08/2021 31/12/2023
Shell Energy Go Further December 2023 0.16575 0.03012 0.40216 0.29023 13/01/2021 31/12/2023
Shell Energy Go Further December 2023 0.1693 0.03018 0.39345 0.29926 13/01/2021 31/12/2023
Shell Energy Go Further December 2023 0.17036 0.02948 0.35815 0.30882 13/01/2021 31/12/2023
So Energy So Tulip 0.2103 0.0573 0.7209 0.3173 23/10/2024 23/10/2025
So Energy So Tulip 0.2104 0.0591 0.6831 0.3172 23/10/2024 23/10/2025
So Energy So Tulip 0.2117 0.0594 0.636 0.3166 23/10/2024 23/10/2025
SSE Swalec Smart Energy 0.4599 0.22171 0 0 23/12/2024 -
SSE Swalec Smart Energy 0.4682 0.22394 0 0 23/12/2024 -
SSE Swalec Smart Energy 0.4682 0.22394 0 0 23/12/2024 -
The Energy Deal Ebico Loyal Prime 12 Saver February 2024 v3 0.23354 0.06027 0.69142 0.29515 26/02/2024 26/02/2025
The Energy Deal Ebico Loyal Prime 12 Saver February 2024 v3 0.23354 0.06014 0.65373 0.29495 26/02/2024 26/02/2025
The Energy Deal Ebico Standard 0.2351 0.06321 0.72042 0.31698 01/01/2025 -
Tonik Tulo Vari-One 0.21892 0.0609 0.45938 0.32722 08/04/2025 08/05/2025
Tonik Tulo Vari-One 0.21945 0.0609 0.45127 0.3236 08/04/2025 08/05/2025
Tonik Tulo Vari-One 0.2205 0.05985 0.45045 0.32288 08/04/2025 08/05/2025
Tulo Energy Tulo Vari-One 0.21892 0.0609 0.45938 0.32722 08/04/2025 08/05/2025
Tulo Energy Tulo Vari-One 0.21945 0.0609 0.45127 0.3236 08/04/2025 08/05/2025
Tulo Energy Tulo Vari-One 0.2205 0.05985 0.45045 0.32288 08/04/2025 08/05/2025
Utilita Smart Energy 0.4599 0.22171 0 0 23/12/2024 -
Utilita Smart Energy 0.4682 0.22394 0 0 23/12/2024 -
Utilita Smart Energy 0.4682 0.22394 0 0 23/12/2024 -
Utility Warehouse Energy Direct Mar24v2 0.17934 0.03607 0.26817 0.26587 25/08/2021 31/03/2024
Utility Warehouse Simply Online Mar24 0.17945 0.0361 0.26828 0.26595 12/08/2021 31/03/2024
Utility Warehouse Simply Online Mar24v2 0.18113 0.03652 0.26828 0.26595 16/08/2021 31/03/2024

You can save about £290 each year by choosing a cheaper dual fuel supplier. It's simple to compare energy tariffs with our energy price comparison tool. You can change suppliers in only 21 days.

Should You Switch to a Fixed or Variable Dual Fuel Tariff?

Choosing a fixed or variable dual fuel tariff depends on what your household needs. It also relies on the current energy market conditions. A fixed dual fuel tariff gives you price certainty. It locks in your rates for a set time, which is usually 12 to 24 months. This can be helpful if you want to avoid higher prices in the future. A variable tariff, however, changes with the market. This means you might save money if wholesale prices go down. But you could end up paying more if prices go up.

More than half of the UK dual fuel customers use a standard variable tariff. This option is often not the cheapest. If you switch to a fixed deal, you can get better rates. You can also avoid the changing energy prices.

Dual Fuel Customer Preference

How to Save Money on Dual Fuel Energy Tariffs

To save money on your dual fuel energy bill, you should compare energy tariffs often. Many homes stick with their current supplier. They miss out on better deals that are available. You can compare dual fuel tariffs easily. Use our online energy comparison tool to find the best energy deal for your home.

Some extra tips for saving on your dual fuel bills are:

  • Get a smart meter: A smart meter lets you read your energy usage. This means you pay for what you really use, not just guesses.
  • Pay using direct debit: A lot of suppliers give discounts if you pay by direct debit.
  • Find green energy tariffs: These options provide energy from renewable sources like wind and solar. They can also have good rates.

By using these tips, you can cut down on your energy usage and save money on your bills.

When is the Best Time to Switch Dual Fuel Suppliers?

The best time to change dual fuel suppliers is when your fixed deal is about to end or if you are on a standard variable tariff. You can use the Energy Switch Guarantee. This makes the switch take only 21 days, and you won’t lose your energy supply during this time. It's smart to compare energy deals in the summer. This is when energy usage is lower. You can find cheaper rates before prices go up in winter.

Switching suppliers can help you save a lot on your energy bills. It is easier now thanks to our energy comparison tool.

Check if you're paying too much.

Compare your current tariff with the cheapest energy deals available in your area – it only takes a few minutes.

How Much Can You Save by Switching to a Dual Fuel Tariff?

Switching to a dual fuel tariff can help you save money on your energy bills. In 2022, the average home saved about £290 by choosing a better dual fuel energy deal. Around 19% of homes changed energy suppliers last year. People who compare energy prices often find lower rates.

The average cost of electricity is now 34p per kWh. Gas is cheaper at 7p per kWh. If you find a dual fuel tariff that combines these rates, you can save money on your energy supply. Also, with dual fuel customers, there is usually one point of contact for both gas and electricity. This makes it easier to manage accounts and get good customer service.

Average Dual Fuel Energy Costs Breakdown

What is the Impact of the Energy Price Cap on Dual Fuel Tariffs?

The energy price cap is set by Ofgem. It controls the most energy suppliers can charge households on standard variable tariffs. As of October 2023, the cap is £1,834 per year for dual fuel customers. This cap helps keep people safe from quick rises in energy prices. Still, the price cap is not always the cheapest option. Many dual fuel customers with standard variable tariffs can save money by choosing a fixed deal instead.

The price cap impacts about 53% of dual fuel customers who use standard tariffs. This means that more than half of all households can save money by checking different options. It is essential to look at your energy deal often. You should think about switching to a less expensive fixed tariff to keep away from changing prices.

Breakdown Of UK Household Energy Tariffs

About 70% of UK homes pick dual fuel tariffs. This means they get their gas and electricity in one bill. Many people like dual fuel tariffs because they are easy to manage. It is simpler to deal with just one energy supplier. Also, customers often pay lower fees. A lot of energy suppliers offer good prices for dual fuel users. That is why it can be one of the cheapest choices for those using both gas and electricity.

The average daily charge for electricity is 53p. For gas, it is 30p per day. If you choose a dual fuel tariff, you might lower these costs. This is especially true if your energy supplier gives discounts when you combine both electricity and gas into one plan.

How to find the cheapest gas and electricity tariff in your area?

The big six usually do not offer the lowest gas and electricity tariffs in the UK. The gas and electricity that come to your home is the same, no matter whose name is on the bill. When you finish your application, we will show you the cheapest gas and electricity tariffs from over 20 suppliers, including the big six. This way, you can make a good choice.

Check if you're paying too much.

Compare your current tariff with the cheapest energy deals available in your area – it only takes a few minutes.

FAQs About Dual Fuel Tariffs

What is a dual fuel tariff?

A dual fuel tariff means you get both your gas and electricity from the same supplier. Instead of two bills and two account logins, you have one bill and one point of contact. Many suppliers offer discounts for dual fuel, making it cheaper and simpler than managing separate accounts.

When is the best time to switch to a dual fuel tariff?

Switching is a good idea if your current deal is ending or you’re on a standard variable tariff. Suppliers often release more competitive deals in the summer months when demand is lower, but the best approach is to check regularly, as market conditions change every quarter when Ofgem reviews the price cap.

How much can I save on my average annual cost with one of the top tariffs?

Households on standard tariffs could save around £200–£300 per year by moving to one of the cheapest dual fuel energy tariffs. The actual saving depends on your energy usage, region, and whether you choose a fixed rate tariff or a variable deal.

Do exit fees apply if I leave my current supplier early?

Yes, some fixed dual fuel deals include exit fees if you switch before the contract ends. However, Ofgem rules mean you can switch without penalty within 49 days of your tariff ending. Always check with your current supplier before switching.

Which providers offer the best dual fuel energy tariffs in the UK?

There isn’t one single “best” supplier—it depends on your home and usage. Larger suppliers like British Gas, EDF, E.ON Next, Octopus Energy, and Ovo often feature in competitive lists, while smaller challengers also offer sharp discounts. The best way to find a deal is to run an energy comparison, which shows live tariffs from across the market.

Are there green dual fuel tariffs in the top 20?

Yes. Many suppliers now include green dual fuel tariffs that provide renewable electricity and offset the carbon from gas. These tariffs are often priced competitively, meaning you don’t always have to pay more to go greener.

How does the Energy Price Cap affect dual fuel tariffs?

The Energy Price Cap limits the maximum unit rates suppliers can charge on standard variable tariffs. Many of the top 20 deals are fixed rate tariffs priced below the cap, which means they can protect you from future price rises and make budgeting easier.

What if my energy usage changes?

If your energy usage has increased (for example, from new appliances or an electric vehicle) or decreased (through efficiency improvements), your costs may differ from the averages shown. To get a more accurate quote, use your latest bill or kWh figures rather than estimates.

What happens if my energy supplier goes bust?

If your supplier fails, Ofgem will move you to another provider under the Supplier of Last Resort scheme. Your gas and electricity won’t be cut off, but you’ll usually be placed on a default tariff. The good news is that the price cap will still apply—but once the transfer is complete, you can switch to a cheaper dual fuel deal if you find one.

Can I still get help with my energy bill if I’m struggling to pay?

Yes. You may qualify for support such as the Warm Home Discount, Winter Fuel Payment, Cold Weather Payments, or additional support credit if you’re on a prepayment meter. Vulnerable customers can also join the Priority Services Register, which provides extra assistance and protection.

How often do the cheapest dual fuel tariffs change in the UK?

The cheapest dual fuel tariffs can change frequently, often every few weeks. This depends on wholesale energy costs, supplier pricing strategies, and Ofgem’s quarterly price cap updates. Because deals move quickly, it’s a good idea to check regularly rather than waiting until your contract ends.

Are there any hidden fees with the cheapest dual fuel energy deals?

Most tariffs are transparent, but it’s important to read the terms carefully. Some of the cheapest fixed rate deals may include exit fees if you leave early, usually between £30 and £75 per fuel. There may also be charges for paper billing or missed payments. Using an energy comparison tool makes it easier to spot any potential extras before you switch.

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