Energy > Guides

What are the best rated energy suppliers?

Victoria Arrington
Nov 15, 2017

When you are switching energy supplier you want to know two things: how cheap are they, and are they any good?

So we put together a list of the best energy suppliers, based on their ratings for customer complaints.


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Once you have read through the list, see how these suppliers stack up on price by using our comparison tool.

That way you can get the best combination of top quality and a great deal.  

But what determines how a supplier receives a top rating, I hear you ask?

We’ve asked our partner Energy-helpline to help us find out not only which suppliers have the best ratings, but how these ratings are measured.

Without further ado, here are the best energy suppliers (Rated 5 out of 5 stars):



*Has 33.7 complaints to third parties per 100,000 customers (April - June 2017).


M&S Energy

*Energy has the M&S label, but it is supplied by Big Six supplier SSE.

*This means like SSE, they too had 33.7 complaints to third parties per 100,000 customers (April - June 2017).


EDF Energy

*47.8 complaints to third parties per 100,000 customers (April - June 2017).


British Gas

*100.4 complaints to third parties per 100,000 customers (April - June 2017).


Sainsbury's Energy

*Sainsbury’s Energy is a partnership between British Gas and the retailer 

*This means like British Gas, they too had 100.4 complaints to third parties per 100,000 customers (April - June 2017).


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How are ratings decided?

Ratings are calculated using Citizens Advice statistics for the number and severity of customer complaints received about the supplier.

Ratings also take in account the availability and access hours to a customer service call centre, and the availability and functionality of suppliers' web services for information and online billing.

Deductions are made for recent fines from the energy regulator Ofgem.

Broken down, this means a rating is dependent on:
* How many complaints that they receive per 100,000 customers (according to Citizen’s Advice Data): The fewer the complaints, the better the rating.

The seriousness of the complaint.

* How long it takes for suppliers to resolve the complaints.

Other factors include how easy it is to get in contact with a supplier to complain; for instance if they have extended hours and/or Saturday hours for their call centre.


How to get a great deal and great service on energy

Now that you know who some of the best-rated suppliers are, you may be thinking about making the switch (which is fortunately quick and easy).

Thankfully, these tariffs are easy to get on – all you have to do is enter some very simple details (mainly your postcode and usage – easy to find on a recent energy bill).

After that, filter to show only 5 star tariffs – and all of the top-rated tariffs will shoot to the top.

Then you can make your choice, confident in the knowledge that your energy will come from the best of the best when it comes to service.

Compare and select from top-rated suppliers here

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