Octopus Energy Review (September 2026)
Overview
Octopus Energy offers strong customer service and highly rated apps, making it a reliable choice for most households.
Who are Octopus Energy?
Founded in 2015, Octopus Energy is backed by pension funds and Generation Investment Management. It has grown to become the UK's largest energy supplier.
What sets Octopus apart is its in-house technology platform, Kraken, which runs its billing and customer service. This system helps the supplier offer a wide range of smart tariffs and maintain its customer service.
Products & services
- Standard variable tariff
- flexible energy with no exit fees
- Fixed tariffs
- energy with prices locked in for a set term
- Smart tariffs
- dynamic pricing based on wholesale costs or time of use
- EV tariffs
- cheaper off-peak rates for charging electric vehicles
- Export tariffs
- pays customers for sending excess solar energy to the grid
Awards & recognition
- ✓Which? Recommended Provider — 2026
- ✓Best Value for Money — Uswitch Energy Awards 2026
- ✓1st place overall satisfaction among large suppliers — Uswitch Energy Awards 2026
Use our referral link, and we'll both get £50 credit once your switch is complete.
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Prices
These are the tariffs we have pricing for — the supplier may offer others.
The cheapest available option from Octopus Energy is the Flexible Octopus variable tariff, priced at £1,598 a year. As a variable deal, it carries no fixed term and charges a £0 exit fee.
Households seeking to lock in their unit rates in advance might consider the Octopus 12M Fixed August 2026 v6 tariff, which costs £1,642 a year. This option requires a 12-month commitment and includes a £100 exit fee.
Tariff details
This supplier's full tariff range
Octopus Energy offers standard variable and fixed-rate tariffs, alongside specialist smart tariffs. Fixed deals are available with a 12-month term.
Customer reviews
Octopus Energy receives strong feedback on Trustpilot, holding a rating of 4.8 out of 5 across 857,633 reviews. Of these, 90% are five-star and 3% are one-star. Customer comments frequently highlight fast response times and efficient account management.
Conversely, a portion of the customer base reports communication issues, specifically citing delayed or unanswered emails. Some reviews also note extended waiting times when attempting to resolve complex technical problems.
In the annual Which? survey, the supplier achieved a customer score of 74. It received 10 out of 10 for helping those who need it, alongside 4 out of 5 for overall customer service, ease of contact, and clarity of statements. Its value for money rating is 3 out of 5.
Apps
Octopus Energy provides mobile applications for Apple and Android devices, recording over 1,000,000 installs on the Google Play Store. The iOS app holds a score of 4.8 out of 5 from 254,000 ratings, while the Android version sits at 4.3 out of 5 across 47,238 ratings. Both platforms receive frequent updates.
A small sample of recent iOS reviews averages 1.67 stars. Within this group, some users report technical errors and unexpected payment changes, while others indicate their issues were resolved promptly. Due to the limited size of this sample, it may not reflect the broader user experience.
Service and support
Octopus Energy ranks 4th in the Citizens Advice supplier table, achieving an overall score of 3.67 out of 5. The firm receives 21.3 complaints per 10,000 customers. Data shows the support team answers 86.1% of emails within two days, and the average call centre wait time is 1 minute 17 seconds.
The supplier maintains formal vulnerability commitments registered with Citizens Advice. Customer support operates via phone and email from 9am to 5pm Monday to Thursday, and 9am to 4pm on Fridays (closed weekends). Accepted payment methods include direct debit, cash, cheque, and prepayment.
Octopus Energy complaints and performance
In Q1 2026, Octopus Energy received 538 complaints for every 100,000 customers. The supplier resolved 43% of these by the end of the next working day, and 80% within eight weeks.
Green energy
Octopus Energy supplies a mostly renewable electricity mix, with the rest coming from nuclear power. The supplier describes its electricity as 100% zero-carbon. It has a verified target to reach net zero across its entire business by 2040. To help reach this, it set up the Centre for Net Zero, a research lab that looks at how to build a low-carbon energy system (Octopus Energy).[1]
Through its investment arm, Octopus Energy Generation, the company manages a renewable energy portfolio worth about £6 billion. This includes around 240 large-scale green energy projects. In 2026, it also announced an investment of about £385 million in tree-planting and carbon removal projects.
Verdict
Octopus Energy offers strong customer service and highly rated apps, making it a reliable choice for most households.
Octopus Energy may suit households prioritising established customer service channels and digital account management. Its Trustpilot rating and call response metrics indicate consistent support for the majority of its customer base.
While the firm performs well in app usability and contact times, its Which? value for money score of 3 out of 5 suggests that price-conscious consumers should compare its tariffs against the wider market before switching.
Frequently asked questions
Is Octopus Energy a good supplier?
Octopus Energy is the UK's largest energy supplier and generally receives strong customer satisfaction scores, holding a Trustpilot rating of 4.8 out of 5 and ranking 4th with Citizens Advice.
What is the cheapest Octopus Energy tariff?
The cheapest tariff we currently have pricing for is the Flexible Octopus variable tariff, which costs £1,598 a year and has no exit fees.
Does Octopus Energy charge exit fees?
It depends on the tariff. The Flexible Octopus variable tariff has no exit fee, while the Octopus 12M Fixed August 2026 v6 tariff comes with a £100 exit fee.
How good is Octopus Energy's customer service?
Customers generally praise the supplier's service. It has a Which? customer service score of 4 out of 5 and a Trustpilot rating of 4.8 out of 5, with reviews frequently highlighting friendly staff and fast responses.
Does Octopus Energy have a mobile app?
Yes, it offers highly rated apps for both Apple and Android devices. The iOS app holds a score of 4.8 out of 5, while the Android app is rated 4.3 out of 5.
How quickly does Octopus Energy answer the phone?
According to Citizens Advice data, the average call centre wait time for Octopus Energy is 1 minute 17 seconds.
What are Octopus Energy's opening hours?
The supplier's customer support is open Monday to Thursday from 9am to 5pm, and Friday from 9am to 4pm. It is closed on weekends.
Should I switch to Octopus Energy?
Octopus Energy suits households who want reliable customer service and good digital tools. However, it is always worth checking current prices to make sure its tariffs fit your budget.
Does Octopus Energy offer support for vulnerable customers?
Yes, the supplier has formal vulnerability commitments registered with Citizens Advice and scored a perfect 10 out of 10 for "help for those who need it" in the latest Which? survey.
What changed this month
This month, Octopus Energy's iOS app days since last update fell from 6 to 1, Octopus Energy's play store days since last update fell from 2 to 1, and Octopus Energy's fixed tariffs available fell from 2 to 1. There were 11 other data changes this month — see the full changelog below for details.
Data changes this month (16)
Octopus Energy
- Trustpilot reviews837,814 → 857,633
- iOS app ratings count249,000 → 254,000
- iOS app days since last update6 → 1
- iOS sampled reviews avg stars2 → 1.67
- Play Store rating4.3956046 → 4.3669577
- Play Store ratings count47,091 → 47,238
- Play Store days since last update2 → 1
- Play Store positive ratings %85.5 → 84.5
- Play Store negative ratings %11 → 11.7
- Play Store neutral ratings %3.5 → 3.7
- Play Store net-positive %74.5 → 72.8
- Cheapest variable tariff£1,792.32 → £1,598.38
- Cheapest fixed tariff£1,841.19 → £1,641.76
- Cheapest tariff£1,792.32 → £1,598.38
- Tariff count3 → 2
- Fixed tariffs available2 → 1
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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