Sainsbury’s Energy Review

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Tariffs | Price | Customer Service | Reviews | App/Website | Fuel Mix | Billing | Smart Meters | FAQs

Sainsbury’s Energy Review Summary



  • Just one, fixed-rate tariff
  • Not available to existing E.ON, Npower or Powershop customers
  • Not available to pre-payment customers

Who are Sainsbury’s Energy?

Sainsbury’s Energy were originally a subsidiary of British Gas which used the Sainsbury’s brand under licence. Since April 2019 they have been a subsidiary of Npower and the energy used by Sainsbury’s Energy customers is now supplied by Npower.

The main advantage of Sainsbury’s Energy is the fact that if you use them as your energy supplier you earn Nectar points. They are the only energy supplier to offer Nectar points.

You earn these Nectar points when you sign up, and if you are a Sainsbury’s Energy customer you also earn extra Nectar points every time you shop at a Sainsbury’s store. However, you do not earn Nectar points on the money you spend on your energy bills.

What tariffs do Sainsbury’s Energy offer?

Sainsbury’s Energy offer fixed rate tariffs only, and customers can choose to fix their energy prices for either one or two years. There is a £30 exit fee per fuel.

Existing Npower customers cannot switch to Sainsbury’s Energy to take advantage of this tariff.

Sainsbury’s Energy do not offer Economy 7 tariffs, ‘feed-in’ tariffs or tariffs aimed at electric vehicle owners.

Customers can choose to use Sainsbury’s Energy to supply just their electricity or they can also use Sainsbury’s Energy to supply both their electricity and their gas.

How do Sainsbury’s Energy compare on price?

Sainsbury’s is not the cheapest energy supplier, but their prices are more competitive than Npower’s prices.

People considering switching to Npower might want to consider to Sainsbury’s Energy instead, especially as although Sainsbury’s Energy uses Npower to supply its energy, Sainsbury’s Energy’s is more environmentally friendly because Sainsbury’s Energy purchases Renewable Energy Guarantee of Origin certificates to carbon offset.

What do other Sainsbury’s Energy reviews say?

Sainsbury’s Energy only score 3.1 stars out of five on TrustPilot, with 80% of the reviewers rating them as poor or bad. Only 12% rate them as excellent.

Which? does not score Sainsbury’s Energy as an energy supplier, but ranks Npower, their parent company, in 30th place out of 35 energy companies.

Citizens Advice does not score Sainsbury’s Energy as an energy supplier, but gives Npower 3.8 stars out of five, putting them in 9th place out of 40 energy companies.

How green is Sainsbury’s Energy’s energy?

Sainsbury’s Energy are honest about their fuel mix, linking to it from their website’s homepage. However, they use Npower as their energy supplier, and Npower’s energy is not particularly environmentally friendly.

Only 26.2% comes from renewable sources, compared to a UK national average of 32.8%. The main source of electricity is natural gas (48.9%) with nuclear also being a large component (14.7%).

As a result, at 264g/kWh Npower’s carbon emissions are higher than the 209g/kWh UK national average.

However, Sainsbury’s Energy claim that they purchase a Renewable Energy Guarantee of Origin certificate for each unit of electricity to offset their carbon emissions. This means that Sainsbury’s Energy is more environmentally friendly than Npower’s energy.

What is Sainsbury’s Energy’s customer service like?

Sainsbury’s Energy have a live chat feature on their website or you can use the contact form on that website to send them a message. You can also phone their UK-based call centre.

As they have only been trading as an Npower subsidiary for a relatively short amount of time, there is no data in terms of their response times to emails and phone calls, or the number of complaints that have been made against Sainsbury’s Energy and how quickly those complaints have been settled.

What is Sainsbury’s Energy’s website/app like?

The Sainsbury’s Energy website is well laid out but the information it contains does not seem to be organised with any degree of consistency meaning that it is not obvious where to find what you are looking for. There is a live chat feature and you can also send messages from the website via a contact form.

You can use the online portal to enter meter readings and view your energy consumption, both in terms of your historic consumption and your predicted future consumption.

There is also an app that lets you do all of this, as well as notifying you when your next meter reading is due. This app is available for Android devices as well as Apple iOS devices.

Only two people have rated the app on Google’s Play Store, but both of those people rated the app five stars out of five.  Three people have rated the app on Apple’s App Store, giving the app an average of 3.3 stars out of five.

What billing options are available?

Sainsbury’s Energy only accept payment via monthly direct debit. You can also pay by credit or debit card, but these payments are taken automatically from your card in the same way that a direct debit is taken. The amount you pay is fixed each month based on your anticipated energy consumption.

Pre-payment options are not available, and you cannot pay on receipt of a bill by cheque, cash or bank transfer/Internet banking.

You can change the date that you pay your bill each month if you want, for example so that it matches your payday. If you want to do this, you simply need to get in touch with Sainsbury’s Energy.

You can also change the amount you pay each month once you have submitted a few meter readings. You can track your usage via the Sainsbury’s Energy Payment Tracker that is available via the website or the app.

Do Sainsbury’s Energy offer smart meters?

Sainsbury’s Energy will install a smart meter free of charge if you ask them to and they are available in your region.

If you have an existing smart meter and switch your energy supply to Sainsbury’s Energy whether your smart meter will continue to work will depend what sort of smart meter is it.

If you have a first generation smart meter you will lose the smart functionality. However, if you have a second generation smart meter it should retain its smart functionality when you switch energy supplier.

Do Sainsbury’s Energy offer a recommend a friend referral scheme?

Sainsbury’s Energy does not offer a friend referral scheme.

Below are a few quick questions you may need answers to along with our Sainsbury’s Energy review:

Do they work with pre-payment meters?

Sainsbury’s Energy cannot supply energy to homes with pre-payment meters. If you are moved onto a pre-payment meter due to non-payment of your bills, you will be moved to an Npower contract.

Do they accept Economy 7?

Sainsbury’s Energy do not offer an Economy 7 tariff.

Are they signed up to the Warm Home Discount?

Sainsbury’s Energy are signed up to the Warm Home Discount. If you are eligible you need to phone them to claim it.

Are they signed up to the Energy Switch Guarantee?

Sainsbury’s Energy are not signed up to the Energy Switch Guarantee, but Npower, which supplies the energy on behalf of Sainsbury’s Energy, is. According to Citizen’s Advice, Npower completes 98.3% of switches within 21 days.

Do they mention about the Priority Services Register?

Sainsbury’s Energy operate a Priority Services Register. Customers can join by phone, email, or by completing the forms on the website or app.

Do they offer a ‘Dual Fuel’ discount?

There isn’t a ‘Dual Fuel’ discount. However, customers who use Sainsbury’s Energy for both fuels get two extra Nectar points for each £1 spent in a Sainsbury’s store, whereas customers who only use Sainsbury’s Energy for the electricity supply only get one extra Nectar point.

Will they offer to pay a customer’s exit fees when they join them?

Sainsbury’s Energy will not pay any exit fees charged by a customers previous energy supplier if the customer is leaving their previous energy supplier early.

What happens if you move home whilst with them?

If you move home while you are a customer of Sainsbury’s Energy, your energy supply contract will come to an end. They will then give you a quote for the energy supply at your new home and you would need to decide whether to continue to use Sainsbury’s Energy for your energy supply.

Do they offer any incentives for joining? 

When you join Sainsbury’s Energy you get 2,000 Nectar Points per fuel if you opt for a one-year fixed rate deal, and 4,000 Nectar Points per fuel if you opt for a two-year fixed rate deal. You also get extra an extra Nectar point when you shop at a Sainsbury’s store if you use Sainsbury’s Energy to supply your electricity, and two extra Nectar points if you use Sainsbury’s Energy to supply both your electricity and your gas.

How to contact Sainsbury’s Energy

You can contact Sainsbury’s Energy in a number of ways. Below as part of our Sainsbury’s Energy review we’ve detailed all their means of contact:

Customer Email:

Telephone: 0808 163 5697

Office Hours: Monday to Friday, 9am to 5pm. Closed on weekends and bank holidays.

Office Address: 5th Floor, 125 Colmore Row, Birmingham, B3 3SD



How do I switch to Sainsbury’s Energy?

The easiest way to switch to Sainsbury’s Energy is through Energy Helpline’s comparison website here. This will allow you to check if Sainsbury’s Energy is one of the cheapest suppliers for you (tariffs vary based on your area) and will allow you to quickly and easily switch to them.

7.6 Total Score
Sainsbury's Energy Review

Sainsbury's Energy were originally a subsidiary of British Gas which used the Sainsbury's brand under licence. Since April 2019 they have been a subsidiary of Npower and the energy used by Sainsbury's Energy customers is now supplied by Npower.

  • Nectar Points
  • UK-based call centre
  • Easy to sign up for Priority Service Register
  • Just one, fixed-rate tariff
  • Not available to existing E.ON, Npower or Powershop customers
  • Not available to pre-payment customers
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