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Energy Review
Supplier comparison

Octopus Energy vs Tulo Energy (September 2026)

Overview

Our verdict
Too close to call

There is no single best choice: compare price, service, app and green-energy evidence separately.

Trustpilot
Octopus Energy
4.8
857,633 reviews
Tulo Energy
4.6
822 reviews
Citizens Advice rank
Octopus Energy
#4
Tulo Energy
N/A
Cheapest variable
Octopus Energy
£1,598
/year
Tulo Energy
£1,611
/year
iOS app
Octopus Energy
4.8
254,000 ratings
Tulo Energy
5
2 ratings
Affiliate
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Use our referral link, and we'll both get £50 credit once your switch is complete.

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Tariffs and pricing

Octopus Energy
CHEAPEST
VARIABLE
Flexible Octopus
£1,598/year
No fixed term · Variable rates can change
Best for: maximum flexibility
FIXED 12M
Octopus 12M Fixed August 2026 v6
£1,642/year
12-month term · Exit fee £100
Best for: price certainty
Tulo Energy
VARIABLE
Tulo Vari-One
£1,611/year
No fixed term · Variable rates can change
Best for: maximum flexibility

Annual estimates use the stored consumption assumptions. Check current regional rates, terms and eligibility before switching.

Customer reviews

Trustpilot
Octopus Energy4.8 / 5
Tulo Energy4.6 / 5
Citizens Advice
Octopus Energy#4
Tulo EnergyN/A
Which?
Octopus Energy74 %
Tulo EnergyN/A %

Each review service uses its own method and scale, so the measures below should be read separately.

App ratings

App Store
Octopus Energy4.8 · 254,000 reviews
Tulo Energy5 · 2 reviews
Google Play
Octopus Energy4.37 · 47,238 reviews
Tulo Energy3.13 · 8 reviews

App-store scores are shown by platform. No winner is declared where either ratings sample is missing or too small.

Service and support

Citizens Advice rank
Octopus Energy
#4
Tulo Energy
N/A
Citizens Advice score
Octopus Energy
3.67
out of 5
Tulo Energy
N/A
out of 5
Emails ≤2 days
Octopus Energy
86%
Tulo Energy
N/A
Avg call wait
Octopus Energy
1.3 min
Tulo Energy
N/A
ChannelOctopus EnergyTulo Energy
PhoneMon–Thu 9am–5pm, Fri 9am–4pm, closed Saturday, closed Sunday
Email24/7

Only like-for-like service measures with data for both suppliers are ranked.

SourcesChecked 1st September 2026
  1. Citizens Advice (Octopus Energy)

Complaints and performance

Per 100k customers
Octopus Energy
538
Q1 2026
Tulo Energy
N/A
CA per 10k
Octopus Energy
21.3
Citizens Advice
Tulo Energy
N/A
Citizens Advice
Resolved same/next day
Octopus Energy
43%
Tulo Energy
N/A
Resolved ≤8 weeks
Octopus Energy
80%
Tulo Energy
N/A

Complaint figures are shown with each supplier’s reporting period. No winner is declared when periods differ or one figure is missing.

Octopus Energy — complaint themes
Customer service
Our customers are at the heart of everything we do, so each time we interact, we’ll send them a follow up survey to see how we did. We do this every time, not just for those who have a straightforward query. We don’t want to hide when things go wrong, we want customers to be able to tell us so we can improve. Rather than being bounced around obscure departments, we believe all our specialists should be able to help you with your questions.
Response
Introduced an Operations Academy for Ongoing Excellence so we can continue to ensure our people have the skills to be industry-leading energy specialists. We’ve grown our teams, meaning more people to respond and help you with anything you need. Expanding training, with refresher courses run each month for all specialists, making sure they are always giving you the most up-to-date information. Introduced more opportunities for our Energy Specialists to partake in our Academy for Ongoing Excellence and improve their skill sets. Those specialists can become team experts, enabling everybody to better support their customers.
Billing & meter reading issues - unrelated with meter type
We’re always looking for ways to improve our dynamic billing processes based on customer feedback. In recent months we’ve streamlined the customer journey, from meter reading submission to payment.
Response
We’ve worked hard to ensure that our communications are as clear as possible, with more information on our statement emails that is tailored to the customer. We’re also offering more comprehensive answers to frequently asked questions. We’ve tightened restrictions around back billing to ensure that customers aren’t charged for energy they used more than 12 months ago. Reviewing our billing system to improve innovative billings products such as Intelligent Octopus and Fan Club Improving the meter reading submission journey to make it easier than ever to submit readings quickly and correctly. Improving training for our operations teams, to ensure that all of our staff are equipped to deal with complex billing queries.
Billing & meter reading issues - smart/advanced meter related
Smart Tariff bills provide you with all the information you need to understand your energy consumption. They’re reliant on half-hourly consumption data sent to us by your smart meter. That means in a 30 day period we use almost 1500 pieces of data to provide you with a bill! Sometimes this data gets lost between your smart meter and our system and we have to send off some requests to retrieve it. In recent months we’ve implemented changes to Kraken, our tech system, so that it does this automatically, and often before you’ll be able to notice it was missing at all. We’ll continue to improve this process until we can be sure of minimal disruption to your bills.
Response
We’ve worked hard to ensure that our communications are as clear as possible, with clear information on our Smart Tariff bills which are tailored to give a great understanding of where the costs originate from. We’re continuously working to ensure that the number of customers who haven’t had a bill is kept to an absolute minimum, by instructing our tech system to retrieve missing consumption data in instances where a bill hasn’t been issued on time. We’ve introduced routine training sessions to help all of our energy specialists to manage tricky Smart Tariff billing issues to ensure all of our customers can be helped. Continuing to improve and streamline the automatic process of our tech system creating your Smart Tariff bills without the need for an Energy Specialist to be involved. Improving training for our operations teams, to ensure that all of our staff are equipped to deal with complex billing queries. Continuing to improve the way we identify and solve billing failures for customers on our smart products in order to ensure our customers receive their statements on time.
Payment issues
At Octopus Energy we believe that we achieve the best outcomes when we treat customers as individuals, with unique circumstances and needs. This holds true for customers that are in arrears, especially at a time where costs are rising for everyone. Our teams are empowered to find individual, affordable solutions by talking to customers and understanding what works best for them.
Response
We’ll regularly review Direct Debits to help ensure customers are paying the right amount for the energy they use to avoid building up a debit. We'll always work with customers to make sure the amount they pay each month is affordable for them. We expanded our Octo Assist Fund, setting aside £40m to help those worried about paying for their energy this Winter. If you're an Octopus customer worried about your energy bills, you can access our Financial Support form here – a quick and simple online tool which asks you a series of questions about your financial situation and helps us to understand how we can best help you. We’re supporting customers through the rise in energy costs. We’ve made it easier for customers to tell us that they’re concerned, and we’ll work with them to provide the support they need. Customers can see projected balances on their online account which lets them see how their account will look in 6 months' time with their current payments. Lead the industry in recruiting our own in-house team of qualified Social Workers, able to offer bespoke solutions and work with organisations to support our most vulnerable customers. We’re partnering with organisations to make completing affordability assessments simpler and more accurate including a service that checks if customers are entitled to claim further benefits or support beyond what Octopus offer. We lead the way by providing free electric blankets to customers who need them, recognising that heating a blanket costs a fraction of what it costs to heat an entire house. We offer bespoke solutions as required that can include standing charge holidays, reduced payments or schemes to provide financial support where circumstances suggest people need a little extra help. We constantly review the support we provide to all our Specialists to ensure that they are well equipped to resolve payment issues.
Meter installation/exchange or meter not working - smart or advanced credit meter
We understand that metering issues are a source of customer dissatisfaction and we have made a great effort to engage with manufacturers and industry to improve the reliability of our smart meter fleet. We’ll do everything we can to make sure your smart meter is installed and communicating with us. For customers who join us with smart meters already installed, we undertake specific actions to ensure that you have smart capability immediately and also look to resolve issues that we inherit from your old supplier.
Response
Over the last 12 months we've increased our operating percentage by 0.40%ppts Over the same period our smart metering base has grown by over 1.3 million working meters Our installation success on the date of appointment is over 97% and for that 3% which aren't successful on the day, we have a number of automated retry processes in place to resolve those within 24 hours. We're actively replacing hundreds of thousands of non working smart meters....In the last year alone we've replaced over 350k smart for smart replacements. In 2026 we'll do even more than that. In the last year we've upgraded nearly 4 million smart meters onto newer firmware upgrades, contributing towards improvements in our operational performance. We're pioneering new technology, switching to 4G comms hubs from Q4 2025, as well piloting Wifi based solutions. We continue to offer all customers the Octopus Home Mini, improving the level of granularity and control you get from your smart meter. Empowering our frontline energy specialists with customer-friendly technical instructions that allow the commissioning of meters remotely, resulting in reduced time without smart metering capability. Continuing to grow our own in-house installation team to ensure that the customer service delivered when installing meters is in line with Octopus Energy's overall customer service ethos. Teaming up with industry-leading EV manufacturer Tesla, to bring new service propositions, special tariffs and features to benefit the exploding electric vehicle market.
Tulo Energy — complaint themes
No complaint-reason breakdown was available in the supplied data

Green Energy Comparison

Octopus Energy
85%Renewable
January to March 2026
Renewable85%
Nuclear15%
Tulo Energy
Fuel mix not published

Published fuel-mix figures are shown only where both a source URL and reporting period are present in the stored data.

Our verdict

Which should you choose?
If you care most aboutChoose
The lowest annual cost on our assumptionsOctopus Energy
Our verdict
Too close to call

There is no single best choice: compare price, service, app and green-energy evidence separately.

Use the decision table to match the available evidence to the factors that matter most to your household.

Octopus Energy
Pros
  • Cheapest variable tariff at £1,598 / year
  • 4.8 Trustpilot from 857,633 reviews
  • Top-4 Citizens Advice ranking
  • iOS app rated 4.8 out of 5
  • 86% of emails answered within 2 days
×Cons
  • 12% of Google Play ratings are negative
Tulo Energy
Pros
  • Cheapest variable tariff at £1,611 / year
  • 4.6 Trustpilot from 822 reviews
×Cons
  • 38% of Google Play ratings are negative

Frequently asked questions

Which is cheaper, Octopus Energy or Tulo Energy?

On the stored annual-cost assumptions, Octopus Energy is £1,598 and Tulo Energy is £1,611. Octopus Energy is lower by about £12 a year.

Can Octopus Energy and Tulo Energy complaint rates be compared directly?

No direct complaint-rate winner is declared because Octopus Energy and Tulo Energy do not both have figures for the same stated reporting period.

Which supplier leads on customer service?

The supplied data does not support a like-for-like customer-service winner.

Which supplier has the better app evidence?

The supplied data does not support a like-for-like app winner.

Do tariff eligibility rules matter?

Yes. Specialist, time-of-use, EV, heat-pump and export tariffs can have equipment, meter or account requirements. Check the current supplier terms before applying.

Which supplier has the greener evidence?

The supplied data does not support a like-for-like green-energy winner. This row is based on published fuel-mix percentages.

Which is better overall, Octopus Energy or Tulo Energy?

There is no single overall winner in this repaired draft. Price, service, app and green-energy evidence are kept as separate choices in the decision table.

When was this comparison updated?

The structured source payload is for September 2026.

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 17 other data changes this month — see the full changelog below for details.

Data changes this month (22)

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Rob Gibbs

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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