Octopus Energy Review (August 2026)
Overview
Octopus Energy is a strong option for households that value highly rated customer service and app-based account management, although its value-for-money score is more moderate.
Who are Octopus Energy?
Greg Jackson set up the company around 2016. It is backed by the Octopus Group, as well as other investors such as Generation Investment Management. Octopus Energy is the UK's largest domestic energy supplier. It has grown both through its own growth and by taking on customers from other suppliers that closed down.[1][2][3][4]
What sets it apart from older suppliers is its focus on smart technology and customer service. It runs on its own software platform to manage customer accounts and energy billing. The company holds several awards, with Which? having named it a Recommended Provider for the ninth year running. It also won awards for Overall Customer Satisfaction, Value for Money, and Customer Service in the 2026 Uswitch Energy Awards.[5][6]
Products & services
- Standard variable tariff
- flexible energy with no exit fees
- Fixed-rate tariffs
- deals that lock in prices for a set time
- Smart tariffs
- time-of-use deals for EVs, heat pumps, and solar setups
Awards & recognition
- ✓Overall Customer Satisfaction — 2026/Uswitch
- ✓Value for Money — 2026/Uswitch
- ✓Customer Service — 2026/Uswitch
- [1] Kantar.com: set up the company around 2016
- [2] Octopus Energy
- [3] Gocompare.com: UK's largest domestic energy supplier
- [4] Climate.selectra.com: taking on customers from other suppliers that closed down
- [5] Octopus Energy: named it a Recommended Provider for the ninth year running
- [6] Uswitch.com: 2026 Uswitch Energy Awards
- Uswitch
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Prices
These are the tariffs we have pricing for — the supplier may offer others.
The supplier's most affordable option is Flexible Octopus, a variable tariff estimated at £1,792 a year. This plan operates without a fixed term and does not charge an exit fee.
For households seeking price certainty, the cheapest fixed option is the Octopus 12M Fixed July 2026 v5. Priced at £1,841 annually, this 12-month contract includes a £100 exit fee.
Tariff details
This supplier's full tariff range
Octopus Energy offers mainstream tariffs as well as a wide range of specialist smart tariffs.[1]
Customer reviews
Octopus Energy holds a Trustpilot score of 4.8 out of 5, based on over 837,000 reviews. The data indicates that 90% of these users award five stars, whereas 3% leave one-star ratings.
Feedback frequently highlights helpful staff and prompt initial response times. Conversely, some critical reviews note that email correspondence can take several days to resolve or occasionally goes unanswered.
During the annual Which? energy survey, the supplier achieved a total score of 74. It received 4 out of 5 stars for customer service, 3 out of 5 for value for money, and 8 out of 15 for complaints handling. Notably, it secured 10 out of 10 for supporting customers in need.
Apps
The supplier provides mobile applications for both major operating systems. The iOS version holds a 4.8 rating from 248,000 App Store reviews, while the Android app scores 4.4 across more than 47,000 Google Play Store ratings and exceeds one million installs.
Both platforms appear to be actively maintained, with recent software updates released within the past few days.
Service and support
According to Citizens Advice, Octopus Energy scores 3.67 out of 5, placing it 4th among UK suppliers. Call centre wait times average 1 minute and 17 seconds, and 86.1% of customer emails receive a response within two days.
The company has registered formal vulnerability commitments with Citizens Advice. Telephone support operates Monday to Thursday from 9am to 5pm, and Fridays from 9am to 4pm, remaining closed over the weekend. Accepted payment methods include Direct Debit, cash, cheque, and prepayment meters.
Octopus Energy complaints
In Q4 2025, Octopus Energy received 495 complaints for every 100,000 customers. The supplier resolved 45% of these complaints by the end of the next working day, and 79% within eight weeks.
Green energy
Octopus Energy supplies a 100% zero-carbon electricity mix, which is largely renewable, with some nuclear power. The company does not just buy green certificates to match usage. Its investment arm manages around £8.5 billion in renewable energy assets, which includes wind and solar farms across the UK and other countries.[1]
The supplier aims to reach net zero greenhouse gas emissions across its whole value chain by 2040. It also runs a research group called the Centre for Net Zero to help build a sustainable energy system. As well as this, the company works with housebuilders on a scheme to set up new homes with solar panels, batteries, and heat pumps so that the people living there pay no energy bills.
Verdict
Octopus Energy is a strong option for households that value highly rated customer service and app-based account management, although its value-for-money score is more moderate.
As the UK's largest domestic supplier, Octopus Energy may suit households looking for a 100% zero-carbon electricity mix alongside generally positive customer satisfaction metrics and relatively short phone wait times. Its most affordable plan is a variable tariff estimated at £1,792 annually, featuring no exit fees.
The provider is a viable option for those who prioritise app-based account management and responsive customer service. However, households strictly focused on cost might want to compare alternatives, given the supplier's moderate 3 out of 5 score for value for money in the latest Which? survey.
Frequently asked questions
What is the cheapest Octopus Energy tariff?
The cheapest deal we currently have pricing for is Flexible Octopus, a variable tariff that costs £1,792 a year. It comes with no fixed term and a £0 exit fee.
Is Octopus Energy a good supplier?
Octopus Energy scores very well across independent metrics. It holds a Trustpilot rating of 4.8 and a Citizens Advice score of 3.67 out of 5, ranking 4th for customer service.
How long does it take Octopus Energy to answer the phone?
Customers wait an average of 1 minute 17 seconds to speak to call centre staff, according to Citizens Advice data.
Does Octopus Energy have a good app?
Yes, Octopus Energy has highly rated apps on both major platforms. It scores 4.8 on the iOS App Store and 4.4 on the Google Play Store.
What do customers say about Octopus Energy on Trustpilot?
The supplier has a Trustpilot rating of 4.8 from over 837,000 reviews. Customers frequently praise the helpful staff and quick response times, though some note that email responses can occasionally take several days.
Is Octopus Energy the largest energy supplier in the UK?
Yes, Octopus Energy is currently the UK's largest domestic energy supplier.
Are there exit fees on Octopus Energy tariffs?
It depends on the tariff. The Flexible Octopus variable deal has a £0 exit fee, while the Octopus 12M Fixed July 2026 v5 tariff carries a £100 exit fee.
How does Octopus Energy perform in the Which? energy survey?
In the annual Which? survey, Octopus Energy scored 74. It received 4 out of 5 for customer service and a standout 10 out of 10 for help for those who need it, though it scored 3 out of 5 for value for money.
When is the Octopus Energy customer service team open?
The support team is available Monday to Thursday from 9am to 5pm, and Friday from 9am to 4pm. The call centre is closed on Saturdays and Sundays.
What changed this month
This month, Octopus Energy's iOS sampled positive reviews rose from 0 to 2, Octopus Energy's iOS sampled negative reviews rose from 0 to 2, and Octopus Energy's play store days since last update fell from 11 to 0. There were 12 other data changes this month — see the full changelog below for details.
Data changes this month (19)
Octopus Energy
- Trustpilot reviews821,111 → 837,814
- iOS app ratings count245,000 → 248,000
- iOS app days since last update9 → 4
- iOS sampled reviews avg starsnow available (2.25)
- iOS sampled positive reviews0 → 2
- iOS sampled negative reviews0 → 2
- Play Store rating4.4341745 → 4.3956046
- Play Store ratings count46,873 → 47,091
- Play Store days since last update11 → 0
- Play Store positive ratings %86.7 → 85.5
- Play Store negative ratings %10 → 11
- Play Store neutral ratings %3.3 → 3.5
- Play Store net-positive %76.7 → 74.5
- Cheapest fixed tariff£1,697.05 → £1,841.19
- Cheapest tariff£1,697.05 → £1,792.32
- Cheapest tariff exit fee£100 → £0
- Cheapest tariff term12 months → 0 months
- Tariff count2 → 3
- Fixed tariffs available1 → 2
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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