Sainsbury's Energy

Since parting ways with British Gas in 2019, Sainsbury's Energy has relaunched through a partnership with Npower. After forming this new team, Sainsbury's Energy has set its sights on offering 'rewarding' and 'trustworthy' energy deals to its customers. It supplies both electricity and gas.

Sainsbury's Energy provides dual fuel plans (gas and electricity), electricity-only plans and gas-only plans in one-year or two-year packages. New customers will make fixed payments with the group's Fix & Reward tariff, which means you pay the same amount every month. There's a £30 exit fee if you decide to cancel your fixed price energy plan before the 12-month term ends.

Both Sainsbury's Energy and Npower have said they are committed to pushing sustainability through their business. A statement on the Sainsbury's Energy website says this will come from 'little things' such as paperless tariffs but also 'wider initiatives run by fellow group companies'.

Find out whether you're on the best energy deal for you by using Which? Switch to compare gas and electricity prices.

Sainsbury's Energy customer score

We spoke to 7,460 survey respondents to find out exactly what they thought of their energy supplier. Sainsbury's Energy finished in 9th place for customer score, outscoring a selection of big-name energy suppliers including Ovo, Green Energy and Utility Point.

Sainsbury's Energy score breakdown

The graphic below shows the breakdown of Sainsbury's Energy's score from our survey.

Find out how Sainsbury's Energy compares with other energy firms – head over to our Which? energy survey results.

Which? verdict on Sainsbury's Energy

Finishing with a customer score of 70%, Sainsbury's Energy sits in the top half of our table of energy suppliers. Although the brand couldn't outscore competitors including Avro Energy, Pure Planet and So Energy, we still saw plenty of customers full of praise for Sainsbury's Energy.

Based on the feedback we received in our survey, the vast majority of Sainsbury's Energy customers are satisfied with the accuracy of their bills. In fact, the group scored four stars in our survey for bill accuracy, with one customer telling us their current bill was 'far better' than the one they received from their previous energy supplier.

Sainsbury's Energy also scored four stars for bill clarity, suggesting that the brand does a good job of avoiding jargon when communicating with its customers. One survey respondent took the opportunity to mention the Energy Saving Mobile App, describing it as 'very clear and understandable'.

Judging by the results of our survey, most Sainsbury's Energy customers are satisfied with the value they're getting from the service. The supplier scored four stars for value for money – only one energy supplier in our full list managed to score a maximum five stars in this category.

If you switch to Sainsbury's Energy from your current supplier, you'll be rewarded with Nectar points. Customers that switch both their gas and electricity to Sainsbury's will get 'triple Nectar points every time they shop with Sainsbury's'. Those points can be spent on treats from Nectar partners including Argos and Vue Cinemas.

Signing up with Sainsbury's Energy means you will be able to manage your account online or with the free mobile app. Customers can compare their energy use with previous days, weeks or months and send meter readings 'in seconds'.

Up until April 2019, Sainsbury's Energy was provided by British Gas. From that date, customers were automatically switched over to British Gas – users that have taken no action since will still be with this provider. That same year, Sainsbury's entered into an agreement with Npower.

Pros: Clear and jargon-free bills according to our survey, customers rewarded with Nectar points; offers a variety of tariffs

Cons: Other energy suppliers in our survey score higher for bill accuracy and value for money

Can I join Sainsbury's Energy with a prepayment meter?

No, Sainsbury's Energy does not accept customers with prepayment meters. 

Check our guide to prepayment meters to find a supplier which does, and how customers rated them in our latest survey.

Sainsbury's Energy electricity sources

Sainsbury's Energy customers are supplied under the licence of Npower Limited. See our graph below for more details on fuel mix.

Sainsbury's Energy in the news

Sainsbury's Energy in 2019

April: After cutting ties with British Gas, Sainsbury's relaunched its energy offering through a partnership with Npower.

February: Sainsbury's announced that all of its customers would be switched over to British Gas. The company also confirmed that it would not be taking on any new customers at that time.