Sainsbury's Energy

Our Verdict

Sainsbury's Energy offers some of the most competitive energy tariffs in the market, and has done so fairly consistently. That is because British Gas, who operates the Sainsbury's Energy brand, uses it to acquire new customers. What this means is that tariffs sold under the Sainsbury's Energy brand can be significantly cheaper than British Gas branded tariffs. And when we say significant we really mean it - Sainsbury's Energy tariffs have often undercut those of British Gas by £200 or more on an average dual fuel energy bill.

Yet it is not well know that British Gas and Sainsbury's Energy are basically the same company. Nor is it well known that British Gas customers can switch to a cheaper tariff Sainsburys Energy tariff and pick up a big saving whilst staying with the same supplier. British Gas customers can switch to Sainsbury's Energy right here at The Energy Shop.

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So, if you are a British Gas customer you should seriously consider switching to a Sainsbury's Energy tariff. You will stay with the same energy supplier but could easily cut £100s off of your annual energy bill. Off course, these tariffs are not limited to just British Gas customers. All customers can apply and would be advised to compare rates before doing so.

Given the big improvements we have seen from Sainsbury's Energy over the past 2 years we are happy to award them a 4 star service rating (from 5) in this review.

Company Description

Sainsburys Energy is a partnership between Sainsbury's, one of the UK's leading UK food retailers and British Gas, the largest energy supplier in the UK. The partnership was launched in 2011 with the aim of offering great savings on energy bills, not just to Sainsburys customers but to customers across the UK.

Sainsbury's Energy does not at present supply prepayment meter customers.

Sainsbury's Energy is signed up to the Warm Home Discount Scheme.

Service Rating

Sainsburys Energy service rating on

Based on our review, we award Sainsbury's Energy 4 Stars (from 5) - our second highest energy supplier rating. This is based on the proportion of switches undertaken on the that complete successfully first time around. Using our website, 91-95% of customers can expect their energy switch to complete successfully without any glitches.

Over the past 2 years we have seen a significant improvement from Sainsbury's Energy in terms of the proportion of successfully completed and in terms of the quality of the reporting that we receive back. We are therefore happy to recommend Sainsburys Energy to our customers if the energy comparison shows that the tariff is right for them.

To compare energy suppliers and switch to a cheaper tariff click here...

Energy Switch Guarantee

Sainsbury's Energy is signed up to the Energy Switch Guarantee.

Fuel Mix Disclosure

All suppliers, including Sainsburys Energy, are required to provide information about the mix of fuels they use to generate the electricity they supply to their customers. They also need to disclose the environmental impact of this fuel mix.

This information is known as the Fuel Mix Disclosure and is published annually.

Because Sainsbury's Energy is supplied by British Gas, Sainsburys Energy Fuel Mix disclosure is the same as that of British Gas.

The table below shows the British Gas Fuel Mix.

Energy SourceBritish GasUK Average
Natural gas33%29.7%
Other fuels2%2.1%
CO2 emissions240 g/kWh368 g/kWh
High-level radioactive waste0.0022 g/kWh0.0016 g/kWh

Source: British Gas

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