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Michelle Monck

Michelle Monck

Consumer Finance Expert
Published: 04/08/2020

At a glance

  • Switching your energy supplier will save most consumers money.
  • Switching is easy and should be completed within 21 days.
  • If you have a problem switching, you may receive automatic compensation.

How to switch energy supplier

Switching to a new electricity or gas supplier is easy to do and can save you money on your energy bills, according to research conducted by Ofgem the regulator of energy companies in the UK). It is also quick to change your energy provider, with the average switching time between 16 and 18 days. When you move energy supplier, you won’t have your supply disrupted or require any work to be completed on your home or garden.

What information do I need to switch?

Find a copy of your latest energy bill, and from this you should be able to find the name of your current energy supplier and tariff, and your most recent usage levels. If you have access to an online portal from your energy supplier, this should have a record of your usage from across the year.

Find out how much you could save on your energy

You will need to provide the information about your current supplier, tariff and usage, and postcode to your new energy supplier. They can use this to give you an estimated cost of a new energy deal with them. Some energy providers can complete all this online.

Featured energy providers



Key features

Find out more

EDF Energy

  • It’s easy to switch to EDF.
  • A great range of electricity and gas tariffs.
  • Excellent service.
  • Competitive prices.
  • Tons of experience.
  • Tens of thousands of people choose EDF as their supplier every month.

Shell Energy

  • Shell can help to provide you with gas and electricity quotes in minutes.
  • All plans come with 100% renewable electricity as standard.
  • Garden neutral tariff available.
  • Exclusive rewards with Shell Go+
  • Broadband discount available.
  • Download the free-to-use app and manage your energy the easy way.
  • Energy switch guarantee.

Bulb Energy

  • Simpler, greener, cheaper.
  • Green gas and electricity supplier.
  • Rates 4.7 out of 5 on Trustpilot.
  • Provide members with 100% renewable electricity from solar, wind and hydro. 
  • Gas is 100% carbon neutral too.
  • The biggest buyer of green gas for homes in the UK, so a chunk of the Bulb has mix comes from renewable sources like food or farm waste, too.
  • Bulb offset the emissions from the gas they supply by supporting carbon reduction projects around the world.

The People's Energy Company

  • Offering affordable energy to all and providing up to £200 savings against the price cap
  • The only energy supplier that is officially recognised as a Community Interest Company, putting the interests of our community ahead of private profit.
  • No external shareholders
  • 75% of profits going back to its members
  • Committed to greener energy generated in the UK from wind, hydro and solar sources



Consider what is important to you in choosing an energy supplier

Saving money on energy is important and you will also want to make sure that your new energy supplier provides good customer service. In addition, you should also consider if you want the security of a fixed tariff that locks the unit cost of your electricity or gas for a set period, or if you are happy to accept potential increases. You may also prefer to use a tariff that is sourced from green energy. You should also check that your new energy supplier is registered with the Energy Switch Guarantee – this is a code of conduct for the standards suppliers operate to during a switch.

How to check the customer service of your energy supplier

Ofgem used to publish the levels of satisfaction customers have with the largest six energy suppliers in the UK. This is currently under review and has not been updated since February 2018. The most up-to-date information from the energy regulator is on complaints. The data shows that the average number of complaints to energy providers has declined overall since 2014. Each energy supplier shares the number of complaints received per 100,000 customers.

Confirm your contract and payment method

The last step is to agree the contract with your new energy provider and how you plan to pay your energy bill. Usually, paying by Direct Debit will give you the greatest saving. This is when the switching process starts, and your new supplier will then manage the process. They will advise you of the date your tariff will move to your new energy supplier. If you change your mind, you have 14 days to cancel the contract and must let the energy supplier know.

How much could you save by switching energy supplier?

Just over half of all energy customers in the UK are on an expensive default tariff, according to Ofgem’s State of the Energy Market report. This means they are missing out on the best energy tariffs and have higher energy bills as a result. There is a limit as to how much energy providers can charge you in a single year if you are on a standard variable tariff ( this is often a default tariff if your energy deal has ended or if you have never switched to a new energy deal) of £1,162. But even with this cap, customers that switch to a new energy deal away from the standard or default tariffs will save more money as a result.

Featured switching provider



Key features

Find out more


  • An automated energy switching company, keeping people on the best energy deal using an  algorithm which scans the entire energy market
  • Manages all the switching admin, so people can save on energy without the hassle of switching themselves
  • Customers save an average of £400 per year- about £100 more per year compared to free switching services
  • Offer 4 different plans (one of which is free): Free, Lite, Standard, Premium. 




  • 100% free energy switching service which takes care of the entire process for you.
  • Automated monitoring lets you know before your bills are set to increase, meaning you’re always in control.
  • Trusted by more than 70,000 UK households 


Postcode Energy


  • Dramatically CUT your household utility bills with POST CODE

  • They are 100% Independent and are totally unbiased, making it an obvious savvy choice for you

  • Rest assured as soon as you are at POST CODE you won’t ever need to worry about your energy tariffs again as we constantly hunt for the very best possible deals for your peace of mind.

  • To switch to a better gas, electricity, or dual fuel utility plan simply enter your “postcode” into the box and follow a few steps

  • POST CODE will then compare the entire UK energy market to find you the very best possible energy deals in your area, from the Industry leading organisations too such as, British Gas, Scottish Power, Eon, SSE, EDF, First Utility and npower to mention just a few.


Good Switch Energy

  • Save up to £505
  • All suppliers vetted for customer service
  • Every switch backed by our customer service promise
  • Every tariff backed by 100% renewable electricity – no greenwash
  • UK-based customer support team



How long does it take to switch energy supplier?

According to Ofgem, the average time to switch energy supplier was between 16 and 18 days in its switching data for September 2019. The regulator has also set an automatic £30 compensation payment for those customers whose switch takes more than 15 working days to complete.
The Energy Switch Guarantee (the code of conduct created by the energy suppliers) sets out that energy providers must achieve a switch within 21 days.

When can I switch energy supplier without penalty?

The rules from Ofgem state that energy suppliers are not allowed to charge fees if you are in the last 49 days of your fixed-term contract. If you are approaching the end of your current energy provider’s deal, you should ask them if they have any new deals to move to, and then compare these with other energy providers’ tariffs.
If you are still within your current energy contract, then you may have to pay an exit fee before switching to a new energy tariff or provider. Sometimes, if you switch tariffs with the same provider, they will not charge you an exit fee. You can also always ask your supplier if they have any deals that allow you to switch without penalty.
And, even if there is an exit fee or penalty, in some cases you may still be able to save money by switching.

What problems might I face when switching energy supplier – can I get compensation?

While experiencing a problem with switching is distressing, at least many of the most likely issues are now covered by automatic compensation. Between May 2019 and February 2020, Ofgem reported that of the £700,000 paid in compensation to consumers, 73% was for returning credit balances late and 27% was for switches made by mistake. The full set of automatic compensation rules came into force in February 2020 and now provide £30 in compensation for the following problems:

  • Switching without your permission
  • A switch takes longer than 15 working days
  • Your final bill does not arrive within six weeks of your completed switch
  • Not having your credit balance refunded within 10 days.

Switching in debt

You can still switch your energy supplier if your debt is less than 28 days old. Anything older than this will need to be repaid first before your switch can take place. Any debt less than 28 days old will be added to your final energy bill from your previous supplier.
If you are in debt to your energy provider and are using a prepayment meter to pay this back, you can switch if you owe less than £500 for gas and £500 for electricity.

Switching when renting

If you are renting a property and directly pay the energy bills, you have the right to choose your own energy supplier. This right is granted under consumer protection law. If your landlord is responsible for paying the energy bills, then they will have the right to choose the energy supplier.

Energy switching guarantee

What is the energy switch guarantee?

Energy suppliers that sign up to the Energy Switch Guarantee set out to meet a series of standards to make switching simple, reliable and hassle-free for consumers. Here is a snapshot of some of the standards in the switch guarantee:

  • The switching service is free
  • Switching will take no more than 21 days from receipt of your application to move supplier
  • No interruption to your energy supply during the switch
  • Your new energy provider will manage the switch with your current supplier
  • You will not be charged twice for the same energy
  • You will receive your final bill from your current provider no later than six weeks after your switch

What does it cost to switch energy supplier?

There are no fees to switch energy supplier and this is protected under the Energy Switching Guarantee. You may incur a fee from your current supplier if your contract is still in force and has an exit fee.

How do I switch to an energy supplier with a smart meter?

The switching process will vary depending on the type of smart meter you currently have. First generation smart meters may experience a temporary loss of functionality when you switch energy supplier. This may mean that you need to send manual meter readings to your energy supplier for a while. Second generation meters should not have this issue and the data will continue to be shared during your switch.

What happens to money in credit when you switch energy supplier?

You should receive your credit balance back within six weeks of your switching taking place. This is a requirement of the Energy Switch Guarantee and if the date is missed you will be entitled to £30 automatic compensation. 

Disclaimer: This information is intended solely to provide guidance and is not financial advice. Moneyfacts will not be liable for any loss arising from your use or reliance on this information. If you are in any doubt, Moneyfacts recommends you obtain independent financial advice.

light bulb in front of yellow and blue background

At a glance

  • Switching your energy supplier will save most consumers money.
  • Switching is easy and should be completed within 21 days.
  • If you have a problem switching, you may receive automatic compensation.

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