Everything you need to know about dual fuel tariffs.
What is a dual fuel tariff?
This guide breaks everything down so you can make the best decision for your home. We’ll cover all the important parts, from comparing tariffs to understanding what a dual tariff actually is.
So, let’s start with the basics. A dual fuel tariff means that you get your electricity and gas from the same supplier (us, for example)! You’ll receive one combined bill showing your electricity and gas use. It's a bit like getting a package deal. As you can imagine, this can have many benefits.
It’s worth noting that some homes only use electricity. If yours is one of them, you won’t be able to switch to a dual fuel tariff — you don’t need to.
What are the benefits of dual fuel?
1Convenience
Forget about juggling two bills from different providers. Switching to a dual fuel tariff puts everything in one convenient place. It’s much easier keeping track of your total electricity and gas use with one bill from one supplier.
2Savings.
Some suppliers give you a discount for choosing a dual fuel tariff, saving you money. They see it as a way of rewarding you for trusting them with both energy supplies.
3Simplicity.
If you ever need to contact your supplier, whether your query is about electricity or gas, there’s only one touchpoint. This means less admin and paperwork, making your energy life simpler.
Do your research first.
However, there are some potential downsides to consider. For example, a dual fuel tariff might not always be the cheapest choice. So it’s best to check with the supplier you have in mind before switching.
Plus, if you do decide to switch before your current deal is up, you may have to pay an early exit fee. A little research before signing up to a new tariff can make a real difference.
What's the average dual fuel bill in the UK?
Giving an exact number for a dual fuel bill is going to be tricky (sorry to disappoint). However, we can share an average. According to Ofgem’s energy price cap press release in February 2025, the average household paying by Direct Debit for dual fuel was £1,849 per year. Though, it’s 9.4% (£159) higher than the previous year, it’s a massive 22% (£531) lower than the start of 2023 when the energy crisis peaked.
The following graph* gives you more insight into the average dual fuel energy bill over the last three years.
* Graph is based on the Ofgem price cap, from January 2022 to April 2025. Visit Ofgem for current pricing.
In general, annual bills can swing anywhere between £1,200 and £2,500 — sometimes more. Naturally, you'll get higher bills in the winter than in the summer. One thing you might want to consider is looking at fixed energy tariffs to help you avoid those pesky price cap changes.
Is a dual fuel tariff always cheaper?
Here's the honest truth: dual fuel isn't always cheaper. How many pennies you part with is down to factors like location and how much energy you use. Don’t fall for clever advertising, get all the facts by comparing prices across multiple suppliers.
Finally, don’t just look at the overall price, get close to the details. Compare the price you’ll pay per unit of energy, that’s where you’ll see the real difference.
To get a feel for our dual fuel options, browse our tariffs.
Choosing the right dual fuel tariff for you.
Compare prices.
Compare, compare, compare to catch the best deal. Dig into the unit rates for electricity and gas, and factor in the daily standing charge. Not every supplier offers a dual fuel tariff, but most big names do — including us! We can give you a quote based on your postcode because prices vary depending on your location.
Consider contract lengths.
Contract lengths matter. A fixed rate locks prices for a set time — reassuring in a rocky market. Just make sure you check exit fees or you could get stung if your situation changes. If you want flexibility, a variable tariff or tracker tariff such as Next Pledge might be a better fit. Though, your bills normally go up and down every three months with the price cap.
Look for additional benefits.
What else matters to you? Perhaps it’s a smart meter to keep tabs on your energy use. Or maybe it’s top notch customer service ratings. We offer lots of great offers, whether you’re new to us or already a firm friend.
Make greener choices.
Some suppliers also offer tariffs with green initiatives too. At E.ON Next, we’re proud to partner with the Woodland Trust, the UK's largest woodland conservation charity. When you pick one of our fixed tariffs, we'll make a one-off donation to the Woodland Trust on your behalf.
Switch to a dual fuel tariff today.
Switching should be a breeze. You needn't worry about interruptions to your energy supply, most suppliers can handle the switch seamlessly. All you need is a recent bill and details of your current provider and tariff to get started. If you’re having trouble finding out your supplier, we can give you a hand.
If you decide to join us, the process is simpler still — you can make the full switch online. Kick things off by getting a quote from us today. Simply select 'electricity and gas’ from the dropdown when prompted to find out about our dual fuel options.
Tips to lower your energy bills.
When it comes to lowering your energy bills, there are many ways to make a difference. Our energy saving tips A to Z is a handy resource to start you on your journey. It’s packed with great advice, from simple tweaks like unplugging devices to long-term improvements like upgrading your home’s insulation.
There are even government funded schemes to help you reach your energy efficiency goals and make a positive impact.
Frequently asked questions
How long does it take to switch to a dual fuel tariff?
It can take just three to five days thanks to the Energy Switch Guarantee (ESG). The ESG ensures switching suppliers is quick and painless. Your new provider will handle everything swiftly and there’s a 14-day cooling off period in case you change your mind.
At E.ON Next, we work extra hard to give you the best service. Learn more about our Guaranteed Standards of Service.
Will switching providers interrupt my energy supply?
Don’t worry, there’ll be no interruptions. Your new provider will handle everything, thanks again to the Energy Switch Guarantee.
Can you use a smart meter with a dual fuel tariff?
Yes, it’s possible to use a smart meter with a dual fuel tariff. In fact, it’s often recommended because it's easier to manage. Your energy provider can sort this for you.
Are there dual fuel tariffs for homes using renewable energy?
There certainly are. Many suppliers offer dual fuel tariffs backed by wind or solar energy. At E.ON Next, we have several options, including Next Gust backed by wind energy generated in the UK. Read more about renewable energy tariffs.