Sainsbury’s Energy Review (September 2026)
Overview
Sainsbury’s Energy offers Nectar point rewards and strong Trustpilot reviews, but missing app and Citizens Advice data makes it hard to fully assess.
Who are Sainsbury’s Energy?
Sainsbury’s Energy is a household energy brand aimed at regular shoppers of the Sainsbury’s supermarket chain. It is not a standalone energy supplier. Instead, it is a trading name used under licence by E.ON Next, which is one of the biggest domestic suppliers in the UK. This means E.ON Next supplies the gas and electricity, manages the accounts, and handles all customer service and billing. The brand has been in the energy market for several years, having previously partnered with other large suppliers before moving to E.ON Next.
What sets Sainsbury's Energy apart is its link to the Nectar loyalty scheme. Customers can earn Nectar points when they sign up and get bonus points on their supermarket shopping while they remain on supply. Because it is run by E.ON Next, customers have access to the same operational support. This includes smart meter installations and access to a fund that gives grants and replacement household appliances to customers who are struggling to pay their bills.
Products & services
- Standard variable tariffs
- flexible deals that track the market
- Fixed-rate tariffs
- deals that lock in prices for 12 or 24 months
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Prices
Prices shown cover selected tariffs; other plans may be available.
The cheapest available deal from this provider is the Sainsbury's Standard Variable tariff, priced at £1,611 a year. This option has no fixed term and does not charge exit fees.
For households who prefer knowing their unit rates in advance, the cheapest fixed option is the Sainsburys Fix and Reward Fixed 24m v51 tariff. This costs £1,640 a year and requires a 24-month commitment.
Current data indicates that Sainsbury's Energy is not a signatory to the Energy Switch Guarantee.
Tariff details
Sainsbury’s Energy offers a range of standard variable and fixed-rate tariffs, which all come with Nectar point rewards. Fixed deals are available with contract lengths of 12 and 24 months.
Customer reviews
Sainsbury’s Energy holds a Trustpilot rating of 4.3 out of 5, based on 3,139 reviews. Approximately 80% of these are five-star ratings, while 10% are one-star.
Positive feedback frequently highlights helpful staff and prompt online messaging. Conversely, some negative reviews cite unexpected billing errors, pricing concerns, and occasional delays from support teams.
In the annual Which? survey, the supplier achieved an overall score of 71, including 4 out of 5 for customer service and 3 out of 5 for value for money. It also received 10 out of 10 in the 'help for those who need it' category.
Apps
There is currently no mobile app data available for Sainsbury’s Energy. Without ratings or review volumes from the App Store or Google Play, it is not possible to assess the provider's digital experience.
Service and support
Sainsbury’s Energy is not currently included in the Citizens Advice league table. As a result, there are no independent metrics available for its call centre wait times, email responsiveness, or overall service rank.
This absence of verified data limits the ability to evaluate the brand's broader customer support performance against the wider market.
Complaints and performance
In Q2 2026, Sainsbury’s Energy received 906.21 complaints for every 100,000 customers. The supplier resolved 58.59% of these complaints by the end of the next working day. It also solved 91.98% of complaints within eight weeks.
Top reasons for complaints
Customer service was the main cause of complaints, making up 35.86% of the total.
Billing and meter reading issues not related to meter type caused 16.11% of complaints.
Payment issues were the third most common reason, causing 13.90% of complaints.
Debt and debt-related disconnections not linked to prepayment meters made up 7.42% of complaints.
Billing and meter reading issues related to smart or advanced meters caused 6.00% of complaints.
| Metric | Sainsbury’s Energy |
|---|---|
| Complaints received | 906.21 per 100k |
| Resolved same or next working day | 58.59% |
| Resolved within 8 weeks | 91.98% |
Green energy
Sainsbury’s Energy provides 100% renewable electricity across its tariffs. It does this by buying Renewable Energy Guarantee of Origin (REGO) certificates, which match the electricity its customers use with power generated from renewable sources like wind and solar.[1]
In a June 2026 sustainability review by the consumer group Which?, the brand received a lower environmental score because it relies on these certificates rather than generating its own renewable power or buying it directly from generators. It also does not offer green gas.[2]
To help customers lower their carbon footprint at home, Sainsbury’s Energy offers discounts on green technology installations. Through its partnership with E.ON, customers can get money off solar panels, home battery storage, air source heat pumps, and electric vehicle chargers.[3]
Verdict
Sainsbury’s Energy offers Nectar point rewards and strong Trustpilot reviews, but missing app and Citizens Advice data makes it hard to fully assess.
Sainsbury’s Energy provides a straightforward set of tariffs and holds a 4.3 Trustpilot rating, alongside a high Which? score for helping customers who need it. However, the lack of independent Citizens Advice metrics and mobile app ratings results in an incomplete picture of its day-to-day operations.
This provider may suit households who regularly shop at Sainsbury’s and wish to earn Nectar points on their energy bills. Those who prefer a supplier with a highly rated mobile app or verified third-party service metrics may want to consider alternative options.
Frequently asked questions
What tariff information is available for Sainsbury’s Energy?
The stored data contains a variable-category annual estimate of £1,611 and a fixed-tariff annual estimate of £1,640. These are estimates, not a quote.
How is Sainsbury’s Energy rated on Trustpilot?
Sainsbury’s Energy has a stored Trustpilot rating of 4.3 out of 5 from 3,139 reviews.
Is there Citizens Advice data for Sainsbury’s Energy?
No Citizens Advice ranking is present in the supplied data.
What do Sainsbury’s Energy complaint figures show?
The supplied Q2 2026 figure is 906 complaints per 100,000 customers.
Does Sainsbury’s Energy have app-rating data?
No app-store rating is present in the supplied data.
What does the fuel-mix data show for Sainsbury’s Energy?
No renewable fuel-mix percentage is present in the supplied data.
Should I switch to Sainsbury’s Energy?
Compare a current personal quote, tariff eligibility and exit fees with the service and app measures shown here before deciding.
When was this Sainsbury’s Energy review updated?
The structured source payload is for September 2026.
What changed this month
This month, Sainsbury’s Energy's shortest fixed term rose from 12 months to 24 months, Sainsbury’s Energy's Trustpilot negative reviews replied % fell from 35 to 31, and Sainsbury’s Energy's cheapest fixed tariff fell from £1,840.79 to £1,639.64. There were 2 other data changes this month — see the full changelog below for details.
Data changes this month (6)
Sainsbury’s Energy
- Trustpilot reviews3,127 → 3,139
- Trustpilot negative reviews replied %35 → 31
- Cheapest variable tariff£1,804.81 → £1,610.88
- Cheapest fixed tariff£1,840.79 → £1,639.64
- Cheapest tariff£1,804.81 → £1,610.88
- Shortest fixed 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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