EDF Energy Scottish Power (September 2026)
Overview
There is no single best choice: compare price, service, app and green-energy evidence separately.
About EDF Energy and Scottish Power
Who is EDF Energy?
EDF Energy is the UK retail branch of the French state-owned EDF Group. It was formed in 2002 and is now one of the UK's largest domestic energy suppliers. What sets it apart is its focus on generating its own zero-carbon electricity, mainly through its UK nuclear power stations, and its involvement in large-scale projects like building the Hinkley Point C nuclear plant. In the 2025 Uswitch Energy Awards, EDF Energy won silver awards for Overall Customer Satisfaction and Customer Service. It was also named in The Sunday Times' Best Places to Work 2026 list for very big organisations.
Products & services
Awards & recognition
Who is Scottish Power?
Scottish Power is an energy company based in Glasgow. It was formed in 1990 and is now owned by the Spanish utility group Iberdrola. Today, it is one of the UK's largest domestic energy suppliers. Alongside energy, it offers home services such as boiler care, solar panel installations, and EV chargers. A key feature of the supplier is its long-running partnership with Cancer Research UK, which it supports through specific charity tariffs. It has raised about £40 million for the charity since 2012. In the 2025 Uswitch Energy Awards, Scottish Power won the award for Best Overall Improvement.
Products & services
Awards & recognition
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 both suppliers, the lowest-priced option is a standard variable tariff. Under our assumptions, these deals are identical in cost at £1,611 a year. Because they have no fixed term, neither supplier applies an exit fee, meaning households can switch without penalty.
Households looking to lock in unit rates will find a lower price with EDF Energy. Its Simply Fixed 2Yr Sep28v4 tariff is estimated at £1,691 a year, which is £139 less than Scottish Power's most affordable fixed deal. This tariff does require a 24-month commitment, and leaving early incurs a £200 exit fee.
Scottish Power’s lowest fixed option, the Exclusive Help Beat Cancer Fixed Sep 2027 SM2, costs £1,830 a year. Although this is priced higher than EDF Energy's fixed tariff, it operates on a shorter 12-month term and carries no exit fee, which may suit those who prefer greater flexibility.
| Metric | EDF Energy | Scottish Power |
|---|---|---|
| Cheapest tariff exit fee | £0 | £0 |
| Cheapest fixed tariff exit fee | £200 | £0 |
EDF Energy and Scottish Power: Tariff Options
EDF Energy
EDF Energy offers a standard variable tariff and fixed-rate deals with terms from 12 to 24 months. It also has specialist options for electric vehicle owners and homes with solar panels and battery storage. For example, its GoElectric EV tariff gives customers cheaper off-peak charging rates overnight.[1]
Scottish Power
Scottish Power offers a variable tariff that tracks the Ofgem price cap with no exit fees alongside fixed deals with 12-month terms. It also offers a tracker tariff, green tariffs, and specialist options for electric vehicle owners and solar panel users. One of its fixed deals is a 12-month fixed tariff for customers with smart meters that supports Cancer Research UK.
Customer reviews
EDF Energy scores 4.8 out of 5 on Trustpilot, based on 251,360 reviews. Within this sample, 83% of users award five stars. Feedback often highlights polite staff and clear guidance, although a portion of customers report difficulties navigating the automated phone systems.
Scottish Power holds a Trustpilot rating of 4.4 out of 5 across 203,838 reviews. Some users note a straightforward online experience, but 19% of the ratings are one-star. Recurring issues in these lower ratings include unexpected costs, confusing billing, and slow responses. Both suppliers actively manage their profiles, replying to over 90% of negative feedback.
The annual Which? energy survey places both suppliers close together, with EDF Energy scoring 58 and Scottish Power 56. Complaints handling is a weak area for both; Scottish Power scores 4 out of 15, while EDF Energy receives 7 out of 15. Conversely, EDF Energy receives a higher rating of 9 out of 10 in the 'helping those who need it' category.
App experience
Scottish Power holds higher app ratings across both major platforms. Its iOS version scores 4.8 out of 5 from 87,000 ratings, and the Google Play equivalent scores 4.7 from 96,905 ratings. Recent updates have added a detailed monthly energy usage breakdown for Direct Debit customers.
EDF Energy’s applications score slightly lower than Scottish Power's. The iOS app receives 4.6 out of 5 from 187,000 ratings, while the Google Play version scores 4.4 from 51,073 ratings. Recent updates have focused on refining smart charging features and resolving account display issues.
Both suppliers record over 1,000,000 installs on the Google Play store. A recent sample of iOS feedback for EDF Energy indicates that some users appreciate the interface redesign, whereas others report difficulties using the payment features.
Service and support
Average wait: 2.8 min
Hours: Mon–Thu 8am–6pm, Fri 8am–4pm, closed Saturday, closed Sunday
Average wait: 1.3 min
Hours: Weekdays 9am–5pm, closed Saturday, closed Sunday
Replies: 86% within 2 days
Hours: 24/7
Replies: 94% within 2 days
Hours: 24/7
Average response: ~2 min
Hours: Business hrs
Scottish Power scores slightly higher on Citizens Advice metrics, ranking 10th overall with 2.94 out of 5. EDF Energy follows in 11th place with a score of 2.9. Additionally, Scottish Power has formal vulnerability commitments registered with Citizens Advice to support customers requiring extra assistance.
For direct contact, Scottish Power reports faster average phone answering times at 1 minute 16 seconds, compared to 2 minutes 46 seconds for EDF Energy. Scottish Power also has a higher email response rate within two days, achieving 94.3% against EDF Energy's 85.6%.
Scottish Power publishes an average social media response time of 2 minutes 25 seconds; EDF Energy does not provide this data. Both suppliers accept Direct Debit, Cash/Cheque, and Prepayment. Scottish Power's phone lines operate on weekdays from 9am to 5pm. EDF Energy offers slightly longer hours, open Monday to Thursday from 8am to 6pm, and Friday from 8am to 4pm.
| Metric | EDF Energy | Scottish Power |
|---|---|---|
| Avg social media response time | N/A | 2 minutes 25 seconds |
Complaints and performance
Complaint figures are shown with each supplier’s reporting period. No winner is declared when periods differ or one figure is missing.
Green Energy Comparison
EDF Energy
EDF Energy focuses heavily on nuclear power, which it describes as zero-carbon. According to Citizens Advice data from January to March 2026, the electricity it supplies to customers is largely nuclear, with some fossil fuel and renewables. The supplier backs some of its specialist tariffs, such as its solar import and export deals, with 100% zero-carbon nuclear electricity. It notes that this electricity goes to the National Grid, meaning customers get their energy from the grid rather than directly from the generators.[1][2]
Scottish Power
While its parent company Iberdrola invests in renewable energy generation, Scottish Power's domestic electricity fuel mix is largely fossil fuels, with some renewable and nuclear energy, according to Citizens Advice data from January to March 2026. The supplier offers specific green tariffs that supply 100% green electricity, though its standard supply relies mostly on fossil fuels.
Our verdict
| If you care most about | Choose |
|---|---|
| The lowest annual cost on our assumptions | Either |
| Overall customer service | Scottish Power |
| A well-rated mobile app | Scottish Power |
| A greener fuel mix | EDF Energy |
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
- 4.8 Trustpilot from 251,360 reviews
- iOS app rated 4.6 out of 5
- 86% of emails answered within 2 days
- 11% of Google Play ratings are negative
- Cheapest variable tariff at £1,611 / year
- 4.4 Trustpilot from 203,838 reviews
- iOS app rated 4.8 out of 5
- 94% of emails answered within 2 days
- 19% of Trustpilot reviews are 1-star
Frequently asked questions
Which is cheaper, EDF Energy or Scottish Power?
On the stored annual-cost assumptions, EDF Energy is £1,611 and Scottish Power is £1,611. The difference is within £5 a year, so it is treated as a tie.
Can EDF Energy and Scottish Power complaint rates be compared directly?
No direct complaint-rate winner is declared because EDF Energy and Scottish Power do not both have figures for the same stated reporting period.
Which supplier leads on customer service?
On the comparable customer-service measure used in the decision table, Scottish Power leads.
Which supplier has the better app evidence?
On the comparable app measure used in the decision table, Scottish Power leads.
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?
On the comparable green-energy measure used in the decision table, EDF Energy leads. This row is based on published fuel-mix percentages.
Which is better overall, EDF Energy or Scottish Power?
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, 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 EDF Energy's iOS app days since last update rose from 6 to 13. There were 25 other data changes this month — see the full changelog below for details.
Data changes this month (34)
EDF Energy
- Trustpilot reviews243,334 → 251,360
- iOS app ratings count185,000 → 187,000
- iOS app days since last update6 → 13
- iOS sampled reviews avg stars2 → 2.33
- Play Store rating4.4256063 → 4.3837585
- Play Store ratings count50,315 → 51,073
- Play Store days since last update7 → 14
- Play Store positive ratings %86.3 → 85.2
- Play Store negative ratings %9.8 → 10.6
- Play Store neutral ratings %3.9 → 4.2
- Play Store net-positive %76.5 → 74.6
- Cheapest variable tariff£1,754.76 → £1,610.88
- Cheapest fixed tariff£1,824.37 → £1,691.28
- Cheapest tariff£1,754.76 → £1,610.88
- Cheapest tariff exit fee£50 → £0
- Cheapest fixed tariff exit fee£150 → £200
- Tariff count4 → 3
- Variable tariffs available2 → 1
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
Related comparisons
Related reviews
E.ON Next Review
E.ON Next is the home energy brand of the wider E.ON group. It was set up to replace the older E.ON brand and npower after E.ON bought the company. Today, it is one of the UK's biggest domestic energy suppliers.
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 →EDF FreePhase Dynamic prices
Three daily electricity price bands that follow the wholesale market, published a day ahead on a twelve-month agreement with no exit fees.
Read more →Related guides
Are Octopus Energy saving sessions worth it?
Energy bills remain a heavy burden for many households. While finding a cheaper tariff is one way to cut costs, Octopus Energy offers a different approach. Its Saving Sessions scheme pays you for changing when you use electricity.
Read guide →
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 →
Who are the ‘Big Six’ energy suppliers?
For years, the term 'Big Six' was used to describe a specific group of energy companies that dominated the UK market. These companies emerged after the energy sector was privatised in the 1990s. Today, the phrase is mostly an outdated industry label. The original line-up no longer exists, as several
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.