How to switch energy supplier and shop for a better deal

Mae’r dudalen yma ar gael yn Gymraeg.

How do I switch?

It pays to shop around. Ofgem research finds comparing and switching supplier or energy tariff can make a big difference to your gas and electricity bills. 

Start by reading up on different tariff types and how they could benefit you.

This Citizens Advice guide explores different kinds of energy tariff and things to consider when shopping around.


What info will I need?

It's useful to have to hand the following information:

  • Your postcode.
  • The name of your current supplier.
  • The name of your current tariff.

You can find your tariff and supplier details on a recent energy bill. If you don't have one or aren't sure about your current supply details, see Who is my gas or electricity supplier?


Use a price comparison website

Use a comparison website or phone different energy suppliers to see if you can save by switching. 

If you are happy with your current supplier, but find a better offer elsewhere, you can ask to see if they will match it.

Ofgem accredited price comparison websites

Energy Helpline 


The Energy Shop 

Money Supermarket 

My Utility Genius


Simply Switch

Switch Gas and Electric


Unravel It 


These websites comply with a code of practice: The Confidence Code.

Citizens Advice also have a comparison tool which includes a customer service star rating.


Weigh up your options

You may want to consider a number of factors when comparing suppliers and tariffs – from cheaper prices and customer satisfaction scores, to green energy tariffs or fixed deals with no exit fee.

Helpful advice

Energy Switch Guarantee
Check if the new supplier you're considering has signed up to the Energy Switch Guarantee.

Compare suppliers on performance 
View Ofgem supplier history data on performance ratings for things like customer service and complaints.

Switching if you’re in debt
Advice on your switching rights if you owe money.

Switching if you rent your property 
Advice on your switching rights if you are a tenant.


Confirm your switch

Once you've picked your new supplier and energy tariff, the last step is to confirm your contract and how you plan to pay. Paying by Direct Debit can usually save you more money. 

The switching process will then start, and your new supplier will be in touch to confirm your switch-over date.

The switch-over process can take up to 21 days. In most cases, it’s around 17 days.

If you change your mind, you have 14 days to cancel from the date you agree a contract.

You must contact the supplier to cancel any contract.