OVO Energy Tulo Energy (September 2026)
Overview
There is no single best choice: compare price, service, app and green-energy evidence separately.
About OVO Energy and Tulo Energy
Who are OVO Energy?
OVO Energy was set up in 2009 in Bristol. It grew in 2020 when it bought the retail business of SSE. Today, it is one of the UK's largest domestic energy suppliers. What sets it apart is its focus on smart technology and rewarding customers for changing how they use energy. Its OVO Beyond programme gives customers perks, while its Power Move scheme offers bill credits to households that shift their electricity use to off-peak times.
Products & services
Awards & recognition
Who are Tulo Energy?
Tulo Energy is a small, independent domestic energy supplier based in Worcester. It is the trading name of Square1 Energy Limited, which was set up in 2017 and began taking on customers in 2019. It aims to be a simple alternative to larger suppliers. It focuses on a single-tariff approach with clear communication and no hidden fees. Customers manage their accounts through a web portal and mobile app, and the company promises UK-based support without automated bots.
Products & services
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)
Tariffs and pricing
The most affordable tariffs from both suppliers are standard variable deals, which carry identical annual costs under our current assumptions. OVO Energy's Simpler Energy and Tulo Energy's Tulo Vari-One both cost £1,611 a year. Neither tariff requires a fixed term, meaning households can switch without paying exit fees.
For households seeking price certainty, OVO Energy provides fixed-rate options. Its lowest-priced fixed deal is the 1 Year Fixed + Boiler Cover 27 August 2026 tariff at £1,742 a year. This contract lasts for 12 months and includes a £100 exit fee. In contrast, our current pricing data does not include any fixed tariffs from Tulo Energy.
| Metric | OVO Energy | Tulo Energy |
|---|---|---|
| Cheapest tariff exit fee | £0 | £0 |
OVO Energy and Tulo Energy: Tariff Options
OVO Energy
OVO Energy offers a range of standard and specialist tariffs. This includes standard variable and fixed options, as well as add-ons for electric vehicle owners and export tariffs for homes that make their own electricity.
Tulo Energy
Our current pricing data includes Tulo Vari-One, a variable tariff for households seeking a simple energy plan.[1]
Customer reviews
OVO Energy holds a Trustpilot rating of 4.7 out of 5 from over 299,000 reviews, representing a substantial sample size. The supplier maintains a 78% five-star share, while 9% of reviews are rated at one star. Positive feedback often highlights helpful staff and prompt engineer visits, though some users report extended wait times and delayed communication.
Tulo Energy achieves a Trustpilot rating of 4.6 out of 5, though this is based on a much smaller sample of 822 reviews. It matches OVO Energy's 78% five-star share and records just 4% one-star reviews. Reviewers frequently note friendly customer service and quick responses that avoid automated phone loops, alongside reliable billing and clear pricing.
In the latest Which? annual survey, OVO Energy receives an overall score of 61. It earns 2 out of 5 for both customer service and value for money, 6 out of 15 for complaints, and 5 out of 10 for smart meters. Its strongest areas are helping those who need it (9 out of 10) and contacting your supplier (8 out of 12). Tulo Energy is not currently rated in the Which? survey.
App quality and features
OVO Energy's iOS app scores 4.6 out of 5 from 18,000 ratings, while its Google Play equivalent sits lower at 2.8 from 10,825 ratings. The Android version records over 1,000,000 installs. Recent iOS feedback indicates the app is useful for tracking detailed usage and billing information, although some users mention difficulties logging into the website via mobile or operating the app on an iPad.
Tulo Energy's app holds a score of 5.0 on iOS and 3.1 on Google Play, but these are based on just 2 and 8 ratings respectively. With such small sample sizes, a direct quality comparison against a supplier with tens of thousands of ratings is not possible. The Android app currently shows over 1,000 installs.
Customer service and support
Average wait: 1.6 min
Hours: Weekdays 9am–5pm, closed Saturday, closed Sunday
Replies: 99% within 2 days
Hours: 24/7
Average response: ~7 min
Hours: Business hrs
OVO Energy ranks 8th overall in the latest Citizens Advice ratings, scoring 3.3 out of 5. The supplier reports an average call centre wait time of 1 minute 33 seconds and responds to 98.5% of emails within two days. Social media inquiries are answered in an average of 6 minutes 53 seconds. Payment options include Direct Debit, Cash/Cheque, and Prepayment. Phone lines operate on weekdays from 9am to 5pm, remaining closed on weekends. The supplier also maintains formal vulnerability commitments registered with Citizens Advice.
Tulo Energy does not currently feature a Citizens Advice score, nor does it have published contact times in the available dataset.
| Metric | OVO Energy | Tulo Energy |
|---|---|---|
| Average social media response time | 6 minutes 53 seconds | N/A |
Complaints and performance
OVO Energy's complaints data is from the second quarter of 2026. There is no complaints data available for Tulo Energy, so we cannot compare the two suppliers directly.
Green Energy Comparison
Published fuel-mix figures are shown only where both a source URL and reporting period are present in the stored data.
Our verdict
| If you care most about | Choose |
|---|---|
| The lowest annual cost on our assumptions | Either |
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.
- Cheapest variable tariff at £1,611 / year
- 4.7 Trustpilot from 299,269 reviews
- iOS app rated 4.6 out of 5
- 99% of emails answered within 2 days
- 52% of Google Play ratings are negative
- Cheapest variable tariff at £1,611 / year
- 4.6 Trustpilot from 822 reviews
- 38% of Google Play ratings are negative
Frequently asked questions
Which is cheaper, OVO Energy or Tulo Energy?
On the stored annual-cost assumptions, OVO Energy is £1,611 and Tulo Energy is £1,611. The difference is within £5 a year, so it is treated as a tie.
Can OVO Energy and Tulo Energy complaint rates be compared directly?
No direct complaint-rate winner is declared because OVO 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, OVO 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, OVO Energy's play store net-positive % fell from 1.3 to -9.2, Tulo Energy's iOS app days since last update fell from 51 to 30, and OVO Energy's iOS app days since last update fell from 37 to 25. There were 16 other data changes this month — see the full changelog below for details.
Data changes this month (20)
OVO Energy
- Trustpilot reviews293,863 → 299,269
- Trustpilot 5-star %77 → 78
- Trustpilot 4-star %10 → 9
- iOS app days since last update37 → 25
- Play Store rating3.0206423 → 2.8167422
- Play Store ratings count10,621 → 10,825
- Play Store days since last update37 → 26
- Play Store positive ratings %48.2 → 43.2
- Play Store negative ratings %46.9 → 52.4
- Play Store neutral ratings %4.9 → 4.4
- Play Store net-positive %1.3 → -9.2
- Cheapest variable tariff£1,804.82 → £1,610.88
- Cheapest fixed tariff£1,923.42 → £1,742.03
- Cheapest tariff£1,804.82 → £1,610.88
Tulo Energy
- Trustpilot reviews814 → 822
- Trustpilot negative reviews replied %0 → no longer available
- iOS app days since last update51 → 30
- Play Store days since last update332 → 362
- Cheapest variable tariff£1,804.78 → £1,610.84
- Cheapest tariff£1,804.78 → £1,610.84
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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.