Compare gas and electricity tariffs: Ofgem-accredited price comparison sites

Mae’r dudalen yma ar gael yn Gymraeg.

Comparing energy tariffs and suppliers can seem confusing. And if you've never compared gas or electricity tariffs before it may seem daunting. But it's actually quite simple and you can find big savings on your bills - around £300 a year according to our latest research. 

How to compare gas and electricity tariffs

We've approved a number of online price comparison sites that are a good place to look when comparing energy tariffs and supplier deals. 

As Ofgem-accredited comparison sites, you can trust that the options and prices you find on them are calculated and displayed in a fair and accurate way. These independent websites operate in accordance with our code of practice, the 'Confidence Code'. Please note UK Power Limited ceased being a Confidence Code accredited site on 1 August 2017. This follows notice they gave to us in July 2017.

Ofgem-accredited energy price comparison sites


The Energy Shop


Simply Switch

My Utility Genius

Switch Gas and Electric


Unravel It

Money Supermarket

Energy Helpline


Citizens Advice also offers a free, impartial online energy comparison service.

What is a ‘Confidence Code’ energy price comparison site?

The Confidence Code is a code of practice to govern independent energy price comparison sites. We accredit sites to the Code.

The Code insists that the sites we accredit follow key principles for how they must operate their service. Using a site with the Confidence Code logo means that the process of switching energy supplier should be easier, more reliable and reassuring for you.

We regularly review the code to make sure it provides the right protections for consumers. You can find further information on the rules Ofgem-accredited sites must stick to in the Confidence Code code of practice.

Why choose an energy price comparison site covered by the Confidence Code?

The sites covered by the Confidence Code act independently of suppliers, so you can be sure that when you are presented with options and prices, they have been calculated and are displayed in a fair and unbiased way.

Comparison sites bearing the Confidence Code logo:

  • help you find the best deal for you in your local area
  • provide a free and easy-to-use switching service
  • give detailed information on each tariff, including gas and electricity unit prices
  • detail any discounts available.

Get help with Ofgem-accredited energy price comparison sites

Queries about the Confidence Code

Please contact our code manager if you:

  • have queries about the Confidence Code
  • run an energy price comparison site and you want to apply to become a member of the Confidence Code

You can do so by emailing:

Complaints about Ofgem-accredited energy price comparison sites

Price comparison sites accredited under the Confidence Code must operate an effective complaints process. 

If you have a complaint, you should first contact the comparison site to tell them and so they can try to resolve it. 

If your complaint is not resolved to your satisfaction, you can then contact Ofgem so we can raise this with the comparison site. You can do so by:

More guides on comparing energy suppliers