Sainsbury’s Energy Review (August 2026)
Overview
Sainsbury's Energy pairs solid customer service scores with Nectar point rewards, but the lack of digital app data makes it harder to judge its overall experience.
Who are Sainsbury’s Energy?
Sainsbury's Energy operates under a licence agreement with E.ON Next, which is part of the E.ON group, one of the UK's biggest domestic suppliers. E.ON Next physically supplies the gas and electricity and runs the billing systems, while Sainsbury's Energy has its own dedicated customer service team.[1]
The key difference between Sainsbury's Energy and other suppliers is its link to the Nectar rewards programme. Customers can get bonus Nectar points when they sign up to certain tariffs, as well as extra points on their regular grocery shopping for as long as they stay on an eligible plan. It also gives customers access to discounts on home energy upgrades through its partnership with E.ON Next, and was named a Which? Recommended Provider in 2026.[2][3]
Products & services
- Standard variable tariffs
- flexible deals that track the Ofgem price cap
- Fixed tariffs
- deals that lock in prices for 12 or 24 months
- Smart tariffs
- variable deals that reward customers with smart meters
- EV tariffs
- specialist time-of-use deals for electric vehicle owners
Awards & recognition
- ✓ServiceMark accreditation — Institute of Customer Service (ICS)
Use our referral link, and we'll both get £50 credit once your switch is complete.
Existing customer? Find out how you can benefit too. T&Cs apply (only one switching offer per household)
Prices
These are the tariffs we have pricing for — the supplier may offer others.
The cheapest option available from this supplier is the Sainsbury's Standard Variable, which costs £1,805 a year. As a variable tariff, it has no fixed term and does not charge an exit fee.
For those seeking price certainty, the Sainsburys Fix and Reward Fixed 24m v51 is the lowest-priced fixed deal at £1,841 a year. It locks in unit rates for a 24-month period and includes a £200 exit fee if you leave before the term ends.
Tariff Details
This supplier's full tariff range
Sainsbury's Energy offers a range of mainstream domestic tariffs, including standard variable and fixed-rate deals, as well as specialist options for electric vehicle owners.
Customer Reviews
Sainsbury's Energy holds a Trustpilot rating of 4.3 out of 5, based on 3,127 reviews. Analysing the sentiment distribution, 80% of these ratings are five stars, compared to 10% at one star.
In the annual Which? energy survey, the supplier achieved an overall score of 71 out of 100. It received 4 out of 5 for overall customer service and 10 out of 10 for helping those who need it. Conversely, it scored 2 out of 5 for its switching process and 3 out of 5 for value for money.
Feedback indicates that customers frequently highlight polite staff, quick response times, and accessible communication via WhatsApp. On the other hand, negative reviews often cite billing issues, including incorrect estimates and high charges, as well as occasional inflexibility in service.
Apps
| Metric | Sainsbury’s Energy |
|---|---|
| App Store rating | N/A |
There is currently no App Store or Google Play data available for Sainsbury's Energy. The absence of these independent ratings makes it difficult to evaluate the performance and usability of the supplier's digital and mobile platforms.
Service & Support
| Metric | Sainsbury’s Energy |
|---|---|
| Complaints per 100,000 customers | 989 |
| Complaints resolved within 8 weeks | 91% |
| Complaints resolved same day | 63% |
| Citizens Advice score | N/A |
Sainsbury's Energy does not currently feature in the Citizens Advice energy league table. Consequently, independent data regarding its average call centre wait times and email response rates is unavailable.
Industry complaints data indicates that the supplier received 989 complaints per 100,000 customers. Of these cases, it resolved 63% on the same day and 91% within eight weeks.
Sainsbury’s Energy complaints and performance
In Q3 2025, Sainsbury’s Energy received 989 complaints for every 100,000 customers. The supplier resolved 63% of these complaints by the end of the next working day, and 91% within eight weeks.
Green Energy
Sainsbury's Energy states on its website that all the electricity it supplies to customers is 100% renewable. Because E.ON Next supplies the energy, the official fuel mix reflects E.ON Next's overall generation, which includes natural gas. However, Sainsbury's Energy matches its customers' electricity use by buying Renewable Energy Guarantee of Origin (REGO) certificates.[1]
The supplier does not offer specific green tariffs, as its standard electricity supply is already backed by renewable certificates. To help households lower their carbon footprint, customers can get money off solar panel installations, home battery storage, heat pumps, and electric vehicle chargers through its partner, E.ON Next.[2][3]
Our Verdict
Sainsbury's Energy pairs solid customer service scores with Nectar point rewards, but the lack of digital app data makes it harder to judge its overall experience.
Sainsbury's Energy may suit households who wish to earn Nectar points on their energy usage and prioritise accessible phone support. The supplier performs reasonably well in independent customer satisfaction surveys, particularly regarding its direct customer service.
However, those who prefer to manage their accounts entirely through a smartphone app, or who prioritise a highly rated switching process, might find this supplier less suitable. Furthermore, the absence of independent Citizens Advice data and mobile app ratings leaves certain aspects of its overall performance difficult to verify.
Frequently asked questions
Who supplies the gas and electricity for Sainsbury's Energy?
E.ON Next physically supplies the energy and runs the billing systems, while Sainsbury's Energy handles customer service and Nectar rewards.
Does Sainsbury's Energy offer fixed tariffs?
Yes. The cheapest fixed deal currently available costs £1,841 a year and lasts for a 24-month term.
Are there exit fees on Sainsbury's Energy tariffs?
It depends on the tariff. The standard variable tariff has a £0 exit fee, while the 24-month fixed tariff carries a £200 exit fee if you leave early.
How is Sainsbury's Energy rated on Trustpilot?
It has a Trustpilot rating of 4.3 out of 5, based on 3,127 reviews.
Did Sainsbury's Energy score well in the Which? survey?
Yes, it received an overall score of 71 out of 100, including a standout 10 out of 10 for helping those who need it.
Is there a Sainsbury's Energy app?
While the supplier offers digital account management, there is currently no independent App Store or Google Play rating data available to show how well it works.
Why is there no Citizens Advice score for Sainsbury's Energy?
The Citizens Advice league table only includes a certain number of suppliers. Because Sainsbury's Energy is not currently featured, independent data on its call wait times and email responses is missing.
How does Sainsbury's Energy handle complaints?
Industry data shows the supplier resolves 63% of complaints on the same day and 91% within eight weeks.
Is Sainsbury's Energy a green supplier?
The electricity supplied comes through E.ON Next, and Sainsbury's Energy matches its customers' usage by buying Renewable Energy Guarantee of Origin (REGO) certificates.
Should I switch to Sainsbury's Energy?
It suits customers who want to earn Nectar points and value good customer service, though the lack of app data and a low Which? score for switching are worth noting.
What changed this month
This month, Sainsbury’s Energy's Trustpilot 2-star % rose from 1 to 2, Sainsbury’s Energy's cheapest tariff exit fee fell from £200 to £0, and Sainsbury’s Energy's cheapest tariff term fell from 24 months to 0 months. There were 11 other data changes this month — see the full changelog below for details.
Data changes this month (14)
Sainsbury’s Energy
- Trustpilot rating4.5 → 4.3
- Trustpilot reviews3,115 → 3,127
- Trustpilot 4-star %8 → 7
- Trustpilot 2-star %1 → 2
- Trustpilot negative reviews replied %36 → 35
- Trustpilot positive reviews %88 → 87
- Trustpilot negative reviews %11 → 12
- Trustpilot net-positive %77 → 75
- Cheapest fixed tariff£1,743.58 → £1,840.79
- Cheapest tariff£1,743.58 → £1,804.81
- Cheapest tariff exit fee£200 → £0
- Cheapest tariff term24 months → 0 months
- Cheapest fixed tariff exit fee£100 → £200
- Cheapest fixed tariff term12 months → 24 months
Written by
Rob Gibbs
Hi, I'm Rob, and I run Energy-Review.co.uk. I initially started this project in 2018 when I was looking to switch energy suppliers and found there wasn't a website that provided simple, data-backed reviews on all the suppliers available. Since then, I have spent a lot of time (too much, some may say!) looking at all publicly available data about each supplier and writing reviews using this information. These reviews are updated as regularly as possible, and any data is backed up by a source where necessary. I have also started writing guides on various energy-related topics, which hopefully you will find useful. If you find any issues, please use our contact form to let us know.
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