How do I change my energy supplier?
Key takeaways.
Learn about the potential benefits: Switching energy suppliers can save money, improve service, and give you access to greener tariffs.
Make your checklist: Before switching, check exit fees and contract terms, and gather bills, tariff details, and accurate meter readings.
Compare deals effectively: Compare deals using unit rates, standing charges, tariff type, and total forecast annual cost - not headline prices.
Understand your rights: You get a 14 day cooling off period and the Energy Switch Guarantee aims to complete switches within 5 working days.
Contest any issues: Your old supplier must refund any credit balance (you can dispute final bill errors through the Energy Ombudsman after 8 weeks or if a deadlock letter is issued sooner).
Is it time to change energy supplier?
It may be time to change energy supplier if switching could lead to savings, better customer service, or more sustainable energy options. And while it can seem like a daunting task, it doesn’t have to be.
In this guide, we'll walk you through the process, answer your burning questions, and empower you to make the best choice for your energy needs.
See pricesHow the energy market works and what it means to change energy suppliers.
The UK energy market is the system that connects the companies you buy energy from (aka, ‘suppliers’) with the networks that deliver it to your home (aka, the local electricity and gas networks).
All this is regulated by Ofgem, the energy regulator for Great Britain. Ofgem sets rules to protect customers like you - from billing standards and switching processes to pricing on certain tariffs.
Switching energy suppliers is as simple as it sounds. It means choosing a different company to provide your electricity, gas, or both.
Think of it as a bit like changing your phone or internet contract – you're looking for a better deal, better service, or maybe even an environmentally conscious option. And since energy prices fluctuate, regularly reviewing your current energy tariff can help you get the best deal.
What type of energy tariffs can you switch to?
You can switch to a range of different energy tariffs, depending on what your supplier has available and what fits your energy needs.
This handy table gives you the main options to help you pick the best tariff:
Energy tariff type. | Price stability. | Exit fees (if applicable). | Suitability. | E.ON Next tariff options. |
|---|---|---|---|---|
Standard variable tariff (SVT). | Rates fluctuate with the Ofgem price cap. | No exit fees. | Maximum flexibility, renters, or temporary setups. | |
Fixed-rate tariff. | Unit rates and standing charges locked for 12–24 months. | Yes (usually applies if leaving early). | Budget certainty and protection against market rate spikes. | |
Smart time of use tariff. | Dynamic rates based on time of day. | Usually no exit fees, but always check the tariff’s terms and conditions. | Households with EV chargers, heat pumps, or home batteries shifting usage off-peak. | |
Tracker tariff. | You could automatically benefit if wholesale energy prices drop. However, be aware that rates can go up too. | Usually no exit fees for switching tariffs, but sometimes a fee per fuel if leaving the supplier. | Households wanting guaranteed savings below the price cap with automatic price drops. |
What are the common reasons for changing energy suppliers?
People may switch energy providers for many different reasons, such as:
Cost savings.
Switching could unlock significant savings on your energy costs.
Greener options.
Make a positive impact on the planet by choosing a supplier that offers renewable energy tariffs.
Customer service that cares.
Tired of long wait times and unhelpful customer support? Get an energy supplier that has great customer service.
Tariff flexibility.
Find a tariff that perfectly matches your normal energy use and lifestyle. This could be a fixed tariff for a year or a tariff designed for electric vehicle chargers.
What are the key considerations before changing energy suppliers?
Before switching, check for exit fees and your contract terms such as your contract end date.
Check your current energy use, and have your recent energy bills, current tariff information, accurate meter readings and your current supplier’s details to hand.
How much could you save by switching energy supplier?
This is the burning question for most of us. While we can't promise a specific number because it varies person to person, a change of energy supplier could unlock savings on your annual energy costs.
Your old tariff may have been great at the time, but the unit rates and standing charges might not be competitive now. Since energy prices are constantly going up and down due to the price cap, reviewing your energy deal every 3-6 months could help ensure you're not paying over the odds.
To truly understand your potential savings, you'll need to look beyond the headline price and compare the finer details, including:
Unit rate.
The cost for each kilowatt hour (kWh) of energy you use.
Standing charge.
The fixed daily charge that covers the cost of keeping your home connected to the energy network, even if you don't use any energy.
Tariff type.
Whether it's a fixed rate (where your unit price stays the same for a set period) or a variable rate (which can go up or down.)
Exit fees.
Does your current contract have a fee for leaving early? If so, you'll need to add up whether the savings outweigh that cost.
Choosing the best energy supplier to switch to.
If you want to choose the best energy supplier for your switch, before you get started, there are a few steps you should look into first:
Tariff types.
Understand the different tariff options available (fixed, variable, dual-fuel, green energy), their pros and cons, and if there’s any exit fees. Try and forecast your annual cost too.
Customer service.
Look for suppliers with excellent customer service ratings, and Trustpilot scores.
Renewable energy options.
Some suppliers offer renewable electricity tariffs. If you’re joining us, you could choose Next Pumped, our heat pump tariff powered by 100% renewable electricity.1
Price caps.
Be aware of the energy price cap and how it could affect the tariff you want to switch to.
How to change your energy supplier.
So, what are the steps when comparing your current supplier with new energy suppliers? To change your energy supplier, start by comparing your current tariff with deals from other suppliers, then your best choice once you’ve weighed up your options.
Follow this three step process to make it simpler:
1Gather information.
Look into your current supplier’s tariffs and compare them with new deals with their competitors.
2Compare.
Use price comparison websites and explore the available deals to you.
3Research.
Check reputable UK resources like Ofgem or the Energy Saving Trust for unbiased advice and information.
How to estimate your energy use for a new deal.
To estimate your energy use for a new deal, the most accurate energy quote tools usually ask for your annual energy usage. It’s not the only way to get a quote, but it is the most common. To find this information, check your most recent annual energy statement or bill.
If you can't find your bills, you can always use national averages, however, this will only give you a rough estimate. Using your actual kilowatt-hour (kWh) data is the only way to ensure the quoted price is close to the price you'll actually pay.
How to get the most accurate energy quote.
Getting a quote that reflects your actual energy use is key to making the right choice. Follow our simple checklist to help make the process more straightforward.
1Have your data ready.
Have your annual kilowatt-hour (kWh) use for electricity and/or gas (if you're switching both).
2Provide an accurate meter reading.
When you’re asked for your most recent meter readings, provide them as soon as you can. Current readings are essential for the final bill from your old supplier and the opening read for your new one.
3Know your current tariff details.
When comparing, check the unit rates, standing charges, and end date of your existing contract.
4Forecast your annual cost.
Use a reliable comparison tool that lets you plug in your annual kWh use to create a forecast of your total annual cost. This overall figure, rather than just the unit rate, is the best way to judge which deal is cheapest for your home.
What are unit rates and standing charges in an energy bill?
Unit rates and standing charges form the two core components of standard UK energy tariffs, directly dictating your overall costs:
Unit rates (p/kWh): The price you pay for each individual kilowatt-hour of energy you use.
Daily standing charge: A fixed daily fee paid regardless of how much energy you use.
Whether your current supplier can offer you a better deal requires examining both unit rates and standing charges before making your choice.
A deal featuring a low unit rate might be paired with a high daily standing charge, cancelling out potential savings if your energy use is low.
Be careful if a supplier offers a lower Direct Debit estimate just to make a deal look more appealing. Smaller monthly payments don’t change the actual cost of the energy you use. If you pay too little each month, you risk building up debt later when your usage is calculated.
What are energy tariff exit fees and how do they work?
Exit fees are basically a penalty if you leave early before your fixed-term energy contract reaches its end date. This charge can make it feel like your contract locks you in, even if a cheaper deal comes up elsewhere.
Before switching, remember to factor in any exit fees to your overall calculations. Compare the cost of this fee against the total savings you would make over the remaining months of your term.
If you’re close to your contract end date, waiting out the remaining weeks could allow you to switch for free and keep your savings intact.
The switching process explained.
When you switch suppliers, the process is usually broken down into four steps.
1Choosing a supplier.
Choose your new supplier and sign up for a new deal.
2The switch.
Your new provider contacts your current supplier to arrange the switch.
3Switch confirmation.
Then, you'll receive confirmation and a switch date.
4Your final bill.
Submit an opening meter reading to your new supplier. They'll send the reading to your old supplier to create your final bill.
Start your switch today.
Choose from our range of energy tariffs and find the right one for you.
What are the common concerns about changing energy suppliers?
There are consumer protections in place when you change energy suppliers. Let's take a look at what they are and how they help.
Cooling-off period.
You have a 14-day cooling-off period after signing a contract with a new supplier. During this time, you can cancel the switch without a penalty.
Energy Switch Guarantee.
The Energy Switch Guarantee ensures your switch is completed within 21 days, with no loss of energy supply. If there are any issues, you might be entitled to compensation.
Vulnerable customer safeguards.
Extra protections are in place for vulnerable customers, such as those with disabilities or on certain benefits.
Should I stay with my current supplier or switch to a new one?
You could stay with your current supplier if they can offer you a retention deal, like a discount or special tariff, but is it really worth making the switch?
Understanding retention deals.
These deals that suppliers offer may be called ‘retention offers’, ‘retention tariffs’, or ‘win-back deals’ if you’ve already started switching or you’ve left and they try to tempt you back.
They can be useful, but they’re not automatically the best option just because they come from your supplier.
Comparing retention deals.
Comparing a retention deal against the wider market could help you to get the best value. While a supplier's special offer might beat your current rate, it could still cost more than tariffs available elsewhere when you factor in unit rates, standing charges, contract length, and estimated annual usage.
Remember, checking independent comparison sites is usually the best way to gain a clear, unbiased view of the whole energy market, so you can evaluate quotes more accurately.
What happens when you switch energy supplier?
When you switch energy suppliers, contact your new supplier straight away if there are issues during the process.
You usually have a 14 day cooling off period to cancel the switch if you change your mind. If a dispute comes up, you could escalate a complaint to the Energy Ombudsman, but only after 8 weeks or if a deadlock letter is issued sooner.
How long does changing to a new energy supplier take?
Switching to a tariff with a new supplier should take up to five working days. Luckily, the Energy Switch Guarantee ensures a smooth transition, meaning you won’t experience any disruption to your supply during this process. Plus, your new supplier will even provide compensation if there’s any delays.
Review your new contract.
Familiarise yourself with the terms and conditions of your new contract.
Monitor your energy usage.
Keep track of your energy use with your new supplier.
Set up Direct Debits.
Arrange for convenient Direct Debit payments so you don’t miss a payment. Some energy providers may even offer a discount if you pay this way.
Check for welcome offers.
See if your new supplier has any welcome offers or benefits that you may be eligible for.
Review annually.
Make it a habit to review your energy deal every year to ensure you're still getting the best possible rate.
Frequently asked questions
Can I change energy suppliers now?
You can usually switch energy suppliers at any time, but there might be some restrictions if you're on a fixed-term contract with exit fees. Smart meters generally don't cause any issues when switching.
Why has my electricity supplier changed?
Sometimes your electricity supplier might change automatically due to company closures, government intervention, or supplier buyouts. If this happens, don't panic! Ofgem appoints a new supplier in such cases, and your new supplier will contact you.
Is it worth changing energy suppliers?
Switching energy suppliers could actually save you money, get you better service, and offer more environmentally friendly options. But it's important to compare deals and see what works best for you before making the switch. Sometimes, sticking with your current supplier might be the best choice, especially if they offer a good loyalty rate.
What is the role of smart meters when changing energy suppliers?
If you’ve already got a smart meter, this can make the switching process even smoother and help you track your energy use more effectively. If you have an older smart meter (SMETS1), it's worth checking with your new supplier to ensure it’s compatible with your new tariff.
Understanding your final bill after changing energy suppliers.
Your final bill from your old supplier will include charges for all energy you’ve used up to the switching date, including any outstanding debt, and any credit you're owed. Check this bill very carefully for any errors or discrepancies as you may be eligible for a refund if you’ve been overpaying.
How is my final bill calculated when I change suppliers?
Your final bill will include charges for all energy used up to the switching date, any outstanding debt, and any credit you're owed. It's crucial to check this bill for accuracy and contact your old supplier if you have any questions.
What happens to my credit balance when I change?
Your old supplier is legally obligated to refund any outstanding credit on your account. This usually happens automatically within a few weeks of your switch.
Can I dispute errors on my final bill?
Yes, you have the right to dispute any inaccuracies on your final bill. Contact your old supplier and provide evidence of the error. If the issue isn't resolved, you can escalate the complaint to the Energy Ombudsman.
How does changing energy suppliers work if I have a prepayment meter?
You can still switch suppliers with a prepayment meter. Your new supplier will provide instructions on how to transfer any existing credit to your new account. In some cases, you may need a new meter installed.
Can I switch to a renewable energy tariff?
Many suppliers offer renewable energy tariffs, where the electricity you use comes from sources like wind, solar, or hydro power. When comparing tariffs, check the fuel mix to see how much of the energy is renewable.
What should I do about my energy supply if I'm moving home?
You can usually arrange for your energy supply to be transferred to your new address, or you can choose a new supplier. It's best to inform your current supplier of your moving date and provide them with forwarding details.
Can I switch suppliers if I'm in debt to my current provider?
If you're in debt to your current supplier, you may need to pay off the debt before you can switch. However, some suppliers may allow you to switch with a small amount of debt, which will be added to your final bill.
What if my new supplier goes bust after I've switched?
Ofgem, the energy regulator, has a 'safety net' process to ensure your energy supply isn't interrupted if your supplier goes bust. You'll be automatically transferred to a new supplier, and any credit balance you have will be protected.
How do I know if I'm getting the best energy deal?
Compare suppliers based on tariff type, unit rates, standing charges, contract length, and customer service. Price comparison tools and supplier websites can help you here.
What happens if my new supplier cancels my change?
If a switch is rejected, it may be due to debt with your current supplier or incorrect details. Contact both suppliers to resolve the issue and try again.
Who is responsible for switching my Direct Debit?
When changing energy suppliers in the UK, your new energy supplier is responsible for your Direct Debit. To be clear, there isn’t a ‘switching over’ process, your new supplier sets up a new Direct Debit.
Your new supplier also lets your old supplier know that you're switching and stops your previous Direct Debit after your final bill.
Find more information about switching and Direct Debits at Citizen’s Advice.
Will I need to tell my old energy supplier I'm switching?
Don’t worry, when changing energy providers, you won’t need to tell your old energy supplier that you’re leaving. Your new supplier will sort everything for you.
How early can I switch energy suppliers?
Switching is quick and flexible, typically taking 3-5 days to complete. You’re protected by a 14 day cooling off period if you change your mind, without paying any fees should you change your mind.
Finally, if you’d prefer to switch on a specific date, you usually can. Simply contact your new supplier and let them know the date. This is ideal if you’re nearing the end of a fixed tariff and don’t want to switch until it’s ended.
Where can I get advice on choosing an energy deal?
There are a number of places to get independent and impartial advice on finding the best deal for your home. The most common next step is using a comparison website that has signed up to Ofgem's Confidence Code. This code ensures the comparisons are truly independent and unbiased.
Can I get the best energy deals with no credit check?
Not usually. The most competitive fixed rate deals are generally offered to customers who pay by Direct Debit. So if you want a deal with no credit check, you may have fewer options than Direct Debit customers. Suppliers usually run a credit check for these deals to be confident you'll be able to pay your bill each month.
However, if you're keen to avoid a credit check, you'll likely be offered a Prepayment tariff. This means paying for your energy upfront by topping up a meter. It's important to note that prepayment tariffs are usually more expensive than Direct Debit options, though the gap has narrowed thanks to the energy price cap.
Can I get the best energy deals with no exit fees?
Yes. Most Standard Variable Tariffs (SVTs), like our Next Flex tariff, don't have any exit fees because they aren't tied to a fixed contract length. So, you're free to switch whenever you want! Just note that the unit price you pay can go up or down with the market.
Does E.ON Next provide energy to customers in rural areas?
If you live in a rural area and are unsure, you can check supply availability by entering your postcode and getting a quote. If you are still uncertain, simply get in touch with us and we can assist.
What customer support does E.ON Next provide as an energy provider?
We’re dedicated to giving you the best support possible. You can contact us in multiple ways, including by phone, email, and WhatsApp.
We also have a helpful community forum where you can chat with other customers to get top tips and the latest news. Find out all the ways you can get in touch with us.
What incentives are there for switching energy supplier?
The biggest incentive for switching energy suppliers is getting a cheaper energy bill. But switching can offer much more than this, including:
- Unlocking savings by moving from an expensive variable tariff to a more competitive fixed or tracker deal.
- Giving you access to specialist tariffs (e.g. electric vehicles (EVs) and solar batteries) that offer cheap overnight charging rates.
- Offering green tech discounts, such as savings on things like solar panels, heat pumps, and EV chargers.
- Access to loyalty perks, from refer a friend schemes to reward programmes for vouchers and freebies.
Get more out of your energy and explore our offers.
The legal bit.
- 1. Electricity backed by 100% renewable sources. Electricity sourced from E.ON’s renewable assets, agreements with independent UK generators and the purchase of renewable electricity certificates. The electricity supplied to your home comes from the National Grid. Find out more at eonenergy.com/renewable.