Who are the UK’s best and worst energy companies?

Believe it or not, there’s more to energy switching than simply finding the best energy deals to cut the cost of your gas and electricity bills.

Although getting the best-priced tariff is often the main motivation for switching energy supplier, the latest Which? research on the best and worst energy suppliers once again highlights the importance of choosing a supplier that not only offers value for money, but also good customer service, along with clear and accurate billing.

So, how does your energy supplier measure up?

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The UK’s best and worst energy suppliers survey

The Which? study took in the opinions of around 8,000 UK gas and electricity consumers, and included ratings for 30 energy companies in England, Scotland and Wales, along with seven from Northern Ireland.

It asked consumers to rate their energy suppliers’ based on the following:

  • Customer service (both online and over the phone)
  • Ability to deal with complaints
  • Value for money
  • Accuracy and clarity of bills
  • Ability to help customers understand and reduce usage.

If you’re a loyal customer of the Big Six energy companies, the results may come as a surprise, and even make you consider switching to a smaller supplier when your current deal is coming to an end.

Who are the UK’s best and worst energy suppliers?

Price is the most important factor when choosing an energy supplier to switch to, so it’s no surprise the top performing energy companies rated highly for value for money. And, as consumers get savvier about savings and energy efficiency, so the top-rated providers also score highly for accuracy and clarity of bills.

The UK’s best energy suppliers

Octopus Energy has been rated as the UK’s top energy supplier, with an 80% customer score and five-star ratings right across the board, including accuracy and clarity of bills, online and telephone customer service, complaints handling, value for money, and helping customers understand and reduce energy usage.

This was closely followed by Robin Hood Energy and So Energy in joint second place with 78%, and Ebico and Tonik Energy in joint third place with 76%. Ovo Energy ranked fifth with a customer score of 74%.

Utility Warehouse, who came out on top in last year’s survey, dropped to seventh, while Flow Energy, who were second with a customer score of 77% dropped to 14th, with a score of just 68% this time around.

It’s also interesting to see two local energy suppliers, Robin Hood and Britsol Energy make the top 10 – Bristol Energy moved up from 10th to 8th, while Robin Hood Energy crashed into joint 2nd spot with an outstanding score of 78%.

Here’s how the top 10 energy suppliers measured up:

Poisition Supplier Customer score
1 Octopus Energy 80%
2 Robin Hood Energy 78%
= So Energy 78%
4 Ebico 76%
= Tonik Energy 76%
6 Ovo Energy 74%
7 Utility Warehouse 73%
8 Bristol Energy 72%
= Bulb Energy 72%
= Ecotricity 72%

The UK’s worst energy suppliers

It probably won’t come as much surprise that Spark Energy finished towards the bottom of the list – the recently defunct energy supplier got two-star ratings across the board and finished with a customer score of 52%.

Amazingly, they never finished bottom of the pile – Solarplicity took that unwanted accolade with a one-star ratings for customer service and complaints handling and a customer score of 44%.

If you’re a customer of the Big Six suppliers, it might be time to look away now – as they make up six of the next seven places, with customer scores between 54% and 58%.

Here’s how the ten worst energy suppliers shaped up:

Poisition Supplier Customer score
21 Together Energy 60%
22 SSE 58%
23 EDF Energy 57%
= Eon 57%
= iSupply Energy 57%
26 British Gas 56%
27 Npower 54%
= Scottish Power 54%
29 Spark Energy 52%
30 Solarplicity 44%

How to get the best energy deal

The quickest and simplest way to make sure you’re on the best energy deal is to enter your postcode at UKPower and run a price comparison – powered by uSwitch, our service is completely free and impartial, and within seconds we’ll show you the best-priced plans from a whole range of suppliers.

And, because we know there’s more to switching than simply getting the best-priced tariff, when you find a tariff that suits, click on the supplier logo for more information.

Or, if you prefer, give our energy experts a call on 0800 014 2918 and they can find you the best deal with the supplier that’s right for you.

To check out the full results, visit the 2019 Which? energy survey results page.

To check last year’s results, visit the 2018 Which? energy survey results page.

Click here to run an energy price comparison, and see if you could be paying less for your gas and electricity.

Les Roberts - Energy Expert at UKPower

Les Roberts - Energy Expert at UKPower

If you’ve got an issue with your energy supplier, our consumer champion Les is on hand to help. A decade in consumer affairs means Les understands how confusing energy tariffs can be, so he'll cut through the jargon to help make sure you get the best deal.

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