Scottish Power Tulo Energy (September 2026)
Overview
Their variable tariffs cost the same, but Scottish Power offers fixed deals and proven apps while Tulo Energy lacks independent service data.
Neither supplier establishes a definitive lead in this comparison. Both offer standard variable tariffs at identical price points under our assumptions. While Scottish Power provides a broader selection of fixed deals, Tulo Energy currently lacks the independent customer service data required for a comprehensive assessment.
About Scottish Power and Tulo Energy
Who is Scottish Power?
Scottish Power is one of the UK's largest domestic energy suppliers. It started in 1990 and is now owned by the Spanish energy group Iberdrola. The company offers standard energy supply as well as solar panels, home batteries, electric vehicle chargers, and boiler care plans. It also runs a long-standing partnership with Cancer Research UK to raise money through some of its tariffs.
Products & services
Awards & recognition
Who are Tulo Energy?
Tulo Energy is a small independent supplier. It trades under the name Square1 Energy Limited and is based in Worcester. The company focuses on simple energy supply and clear billing, aiming to offer fast, UK-based customer service without extra home services or complex deals.
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
For households seeking a flexible contract, Scottish Power’s Standard variable tariff is priced at £1,611 a year, featuring a 0-month term and a £0 exit fee. Tulo Energy’s equivalent, the Tulo Vari-One variable tariff, matches this exactly at £1,611 annually with no exit fee or minimum term. Under our current assumptions, these two options cost the same.
Customers looking to lock in their rates can consider Scottish Power's fixed options, which start at £1,830 a year for the Exclusive Help Beat Cancer Fixed Sep 2027 SM2. This specific plan lasts for 12 months and does not charge an exit fee. In contrast, our current dataset does not include pricing for any fixed tariffs from Tulo Energy.
| Metric | Scottish Power | Tulo Energy |
|---|---|---|
| Cheapest tariff exit fee | £0 | £0 |
| Cheapest fixed tariff exit fee | £0 | N/A |
Scottish Power and Tulo Energy: Tariff Options
Scottish Power
Scottish Power offers a range of energy plans for households. These include flexible variable deals and fixed-term options that lock in prices for a set period. Some of its fixed plans also include donations to charity.
Tulo Energy
Tulo Energy focuses on simple energy plans for households. Its main option is a flexible variable deal that tracks the energy price cap.
Customer reviews
On Trustpilot, Scottish Power achieves a rating of 4.4 out of 5 across 203,838 reviews. Tulo Energy holds a slightly higher score of 4.6 out of 5, though this is drawn from a significantly smaller sample size of 822 ratings.
A closer look at Scottish Power's feedback shows that 60% of users award five stars, whereas 19% leave a one-star rating. Positive comments frequently mention polite engineers, helpful staff, and functional online accounts. Conversely, negative reports highlight issues with confusing bills, unexpected costs, and delays in resolving meter problems.
Tulo Energy’s profile indicates that 78% of its reviews are five-star. Reviewers often point to fast response times, a smooth setup process, and a friendly support team, alongside straightforward billing and satisfaction with pricing.
In broader industry assessments, Scottish Power receives a Which? customer satisfaction score of 56%. Tulo Energy does not currently feature in the Which? scoring system.
Apps and digital tools
Scottish Power maintains established applications on both major platforms. The iOS version scores 4.8 out of 5 from 87,000 ratings, while the Google Play edition holds 4.7 out of 5 across 96,905 reviews. Recent updates have introduced a detailed monthly breakdown for Direct Debit users. However, a sample of recent iOS feedback indicates occasional difficulties transferring funds between accounts, missing details on smart meter displays, and disputes regarding charges for empty properties.
Tulo Energy’s iOS app currently scores 5.0 out of 5, and its Google Play counterpart sits at 3.1 out of 5. These figures are based on just 2 and 8 ratings respectively, making the sample size too small for a reliable comparison with larger suppliers. Furthermore, the Android app has not received an update in nearly a year, though the iOS version was recently refreshed to add new account insights.
Service and support
Average wait: 1.3 min
Hours: Weekdays 9am–5pm, closed Saturday, closed Sunday
Replies: 94% within 2 days
Hours: 24/7
Average response: ~2 min
Hours: Business hrs
In the latest Citizens Advice assessment, Scottish Power scores 2.94 out of 5, ranking 10th overall. The data shows an average call centre wait time of 1 minute 16 seconds, with 94.3% of emails answered within two days. Social media inquiries receive a response in an average of 2 minutes 25 seconds. Additionally, the supplier has formal vulnerability commitments registered with Citizens Advice. Telephone support operates from 9am to 5pm on weekdays, remaining closed on Saturday and Sunday.
Because Tulo Energy is not currently evaluated by Citizens Advice, there is no independent data available regarding its email response speeds or call wait times.
| Metric | Scottish Power | Tulo Energy |
|---|---|---|
| Avg social media response time | 2 minutes 25 seconds | N/A |
Complaints and Performance
We have complaints data for Scottish Power from the fourth quarter of 2025, but there is no data available for Tulo Energy. Because of this, we cannot make a direct comparison between the two suppliers.
Green Energy Comparison
Scottish Power
Scottish Power generates its own wind power and no longer owns fossil fuel power stations. Its parent company, Iberdrola, is a major renewable energy generator. Even so, the electricity Scottish Power supplies to homes is largely fossil fuels, with some renewable, nuclear and other sources. You can read about its clean energy plans on its website.
Tulo Energy
Tulo Energy supplies electricity that is largely fossil fuels. Its fuel mix is mostly natural gas and coal, with a very small amount of renewable energy. The supplier does not highlight specific green energy tariffs or carbon offsetting, but it does offer a Smart Export Guarantee for homes with solar panels to sell extra energy back to the grid.
Our verdict
| If you care most about | Choose |
|---|---|
| The lowest annual cost on our assumptions | Either |
Their variable tariffs cost the same, but Scottish Power offers fixed deals and proven apps while Tulo Energy lacks independent service data.
Based on the available evidence, neither Scottish Power nor Tulo Energy emerges as a definitive winner. Because their cheapest standard variable tariffs cost exactly the same, price is not a differentiating factor for households seeking a flexible contract.
Scottish Power may suit households that prioritise established digital tools and the availability of fixed energy deals. While Tulo Energy receives positive feedback on Trustpilot, it currently lacks the independent service data from Citizens Advice and Which? necessary for a direct comparison. Consequently, if securing a fixed price or using a widely tested mobile app is a priority, Scottish Power is the only supplier in this pairing with those features confirmed.
- Provides fixed energy tariffs
- Mobile apps hold high ratings across thousands of reviews
- Demonstrates fast response times for emails and calls
- 19% of Trustpilot reviews award a single star
- Which? gives it 4 out of 15 for complaints performance
- Achieves a high Trustpilot score driven by five-star reviews
- Variable tariff pricing matches the cheapest option in this comparison
- Current pricing data lacks fixed tariff options
- Absent from major independent service assessments
- Mobile app ratings rely on extremely small sample sizes
Frequently asked questions
Which supplier is better overall?
Neither supplier has a clear lead. Their cheapest variable tariffs cost the same, but Scottish Power offers fixed deals and has proven customer service data that Tulo Energy currently lacks.
Are Scottish Power and Tulo Energy prices similar?
Yes, their standard variable tariffs are effectively identical in price. However, Scottish Power also offers fixed deals, whereas we do not have fixed prices for Tulo Energy in this comparison.
Do customers prefer Scottish Power or Tulo Energy?
Tulo Energy has a higher overall Trustpilot score, but it is based on a much smaller number of reviews. Scottish Power has a lower average score, with 19% of its reviews giving one star, but it has hundreds of thousands of ratings.
Which supplier has the better mobile app?
Scottish Power has highly rated apps on both Apple and Android devices with tens of thousands of reviews. Tulo Energy's apps have very few ratings, making it hard to judge their typical performance.
How fast do they answer the phone?
Citizens Advice data shows that Scottish Power answers calls in an average of 1 minute 16 seconds. We do not have independent call wait times for Tulo Energy.
Should I choose Scottish Power or Tulo Energy?
If you want a fixed energy deal or a well-tested app, Scottish Power is the only option here with those features confirmed. If you just want a simple variable tariff, both cost the same.
Do either of these suppliers charge exit fees?
The cheapest variable tariffs from both Scottish Power and Tulo Energy have £0 exit fees. Scottish Power's cheapest 12-month fixed deal also comes with no exit fee.
How do they handle negative feedback?
Scottish Power replies to 92% of its negative reviews on Trustpilot. We do not currently have data on how often Tulo Energy replies to negative reviews.
What changed this month
This month, Scottish Power's iOS sampled positive reviews rose from 1 to 3, Scottish Power's iOS sampled reviews avg stars rose from 2.33 to 6, and Scottish Power's iOS sampled negative reviews fell from 2 to 0. There were 15 other data changes this month — see the full changelog below for details.
Data changes this month (22)
Scottish Power
- Trustpilot reviews198,589 → 203,838
- Trustpilot negative reviews replied %91 → 92
- iOS app ratings count86,000 → 87,000
- iOS app days since last update26 → 28
- iOS sampled reviews avg stars2.33 → 6
- iOS sampled positive reviews1 → 3
- iOS sampled negative reviews2 → 0
- Play Store rating4.7281113 → 4.731496
- Play Store ratings count95,532 → 96,905
- Play Store days since last update27 → 28
- Play Store positive ratings %94.2 → 94.3
- Play Store neutral ratings %1.3 → 1.2
- Play Store net-positive %89.7 → 89.8
- Cheapest variable tariff£1,804.74 → £1,610.81
- Cheapest fixed tariff£1,990.1 → £1,829.85
- Cheapest tariff£1,804.74 → £1,610.81
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
Related comparisons
Related reviews
100Green Review
100Green, formerly known as Green Energy UK, is an independent energy supplier based in Hertfordshire. Founded in 2001, it is one of the UK's oldest green energy suppliers and operates as a smaller domestic supplier.
Read review →
Scottish Power Review
ScottishPower supplies household gas and electricity and is also a renewable electricity generator. Its UK generation business includes a substantial portfolio of onshore wind farms.
Read review →Prime Outgoing Octopus prices
A fixed-term export tariff that pays a higher rate from 4pm to 7pm and a lower rate at other times.
Read more →Related guides
What is the average gas and electricity bill in the UK?
Energy bills remain a major part of household spending. Over the last few years, the cost of gas and electricity has seen massive changes, driven heavily by global events that affect the price suppliers pay for wholesale energy. For example, the Ofgem price cap rose by roughly 13% in July 2026, larg
Read guide →
Octopus Energy Refer a Friend Code – 2026
Octopus Energy runs one of the most popular refer-a-friend schemes in the UK energy market. While many suppliers stopped offering sign-up bonuses during the recent energy crisis, Octopus kept its scheme open. If you use a referral link from an existing customer to switch your gas or electricity, you
Read guide →
What is a Dual Fuel discount?
When you compare energy tariffs or set up a new account, suppliers usually ask if you want a dual fuel deal. This simply means you choose the same company to supply both your gas and your electricity. For years, energy companies used a dedicated dual fuel discount to encourage households to bundle t
Read guide →
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.