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Energy Review
Supplier comparison

E.ON Next vs Scottish Power (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
E.ON Next
4.5
225,716 reviews
Scottish Power
4.4
203,838 reviews
Citizens Advice rank
E.ON Next
#3
Scottish Power
#10
Cheapest variable
E.ON Next
£1,560
/year
Scottish Power
£1,611
/year
iOS app
E.ON Next
N/A
Scottish Power
4.8
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Tariffs and pricing

E.ON Next
VARIABLE
Next Pledge Tracker 12m v12
£1,560/year
12-month term · Variable rates can change · Exit fee £50
Best for: customers happy to commit for 12 months
CHEAPEST
FIXED 24M
Next Fixed 24m Exclusive v11
£1,510/year
24-month term · Exit fee £200
Best for: price certainty
Scottish Power
VARIABLE
Standard
£1,611/year
No fixed term · Variable rates can change
Best for: maximum flexibility
FIXED 12M
Exclusive Help Beat Cancer Fixed Sep 2027 SM2
£1,830/year
12-month term
Best for: price certainty

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

Customer reviews

Trustpilot
E.ON Next4.5 / 5
Scottish Power4.4 / 5
Citizens Advice
E.ON Next#3
Scottish Power#10
Which?
E.ON Next66 %
Scottish Power56 %

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

Mobile apps

App Store
E.ON NextN/A
Scottish Power4.8 · 87,000 reviews
Google Play
E.ON Next4.34 · 16,278 reviews
Scottish Power4.73 · 96,905 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
E.ON Next
#3
Scottish Power
#10
Citizens Advice score
E.ON Next
3.71
out of 5
Scottish Power
2.94
out of 5
Emails ≤2 days
E.ON Next
91%
Scottish Power
94%
Avg call wait
E.ON Next
2.1 min
Scottish Power
1.3 min
ChannelE.ON NextScottish Power
PhoneMon–Thu 9am–5pm, Fri 9am–4pm, closed Saturday, closed SundayWeekdays 9am–5pm, closed Saturday, closed Sunday
Email24/724/7
Social mediaBusiness hrs

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

Complaints and performance

Per 100k customers
E.ON Next
760
Q2 2026
Scottish Power
1,458
Q4 2025
CA per 10k
E.ON Next
29.8
Citizens Advice
Scottish Power
61.8
Citizens Advice
Resolved same/next day
E.ON Next
50%
Scottish Power
60%
Resolved ≤8 weeks
E.ON Next
90%
Scottish Power
86%

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

E.ON Next — complaint themes
Customer service
32.28%
Reported complaint category for Q2 2026.
Payments
12.16%
Reported complaint category for Q2 2026.
General billing and meter reading issues
11.19%
Reported complaint category for Q2 2026.
Debt and debt-related disconnections
10.4%
Reported complaint category for Q2 2026.
Smart billing and meter reading issues
7.02%
Reported complaint category for Q2 2026.
Scottish Power — complaint themes
Billing
32%
Reported complaint category for Q4 2025.
Payment Issues
27%
Reported complaint category for Q4 2025.
Metering
15%
Reported complaint category for Q4 2025.
Customer Services
11%
Reported complaint category for Q4 2025.
Marketing
5%
Reported complaint category for Q4 2025.

Green Energy Comparison

E.ON Next
86%Renewable
January to March 2026
Renewable86%
Nuclear2%
Fossil fuel12%
Other1%
Scottish Power
7%Renewable
January to March 2026
Renewable7%
Nuclear4%
Fossil fuel84%
Other5%

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 assumptionsE.ON Next
Overall customer serviceE.ON Next
A well-rated mobile appScottish Power
A greener fuel mixE.ON Next
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.

E.ON Next
Pros
  • Cheapest variable tariff at £1,560 / year
  • 4.5 Trustpilot from 225,716 reviews
  • Top-3 Citizens Advice ranking
  • 91% of emails answered within 2 days
×Cons
  • Cheapest overall tariff carries a £200 exit fee
  • 14% of Google Play ratings are negative
Scottish Power
Pros
  • 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
×Cons
  • 19% of Trustpilot reviews are 1-star

Frequently asked questions

Which is cheaper, E.ON Next or Scottish Power?

On the stored annual-cost assumptions, E.ON Next is £1,510 and Scottish Power is £1,611. E.ON Next is lower by about £101 a year.

Can E.ON Next and Scottish Power complaint rates be compared directly?

No direct complaint-rate winner is declared because E.ON Next 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, E.ON Next 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, E.ON Next leads. This row is based on published fuel-mix percentages.

Which is better overall, E.ON Next 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 E.ON Next's iOS app updates in last 90 days fell from 3 to 0. There were 27 other data changes this month — see the full changelog below for details.

Data changes this month (36)

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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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