E.ON Next OVO Energy (August 2026)
Our verdict
E.ON Next takes the win with lower-priced fixed and variable tariffs, stronger app ratings, and a higher Citizens Advice score, though OVO Energy answers calls faster.
E.ON Next leads this comparison due to its lower fixed and variable tariff prices, higher app ratings, and a better overall score from Citizens Advice. While OVO Energy holds a higher Trustpilot rating and shorter average call wait times, the price difference may make E.ON Next more suitable for cost-conscious households.
About E.ON Next and OVO Energy
Who is E.ON Next?
E.ON Next is the UK retail brand of the German energy group E.ON. It launched in 2020 after E.ON bought npower's customer base, making it one of the UK's largest energy suppliers. In 2026, E.ON announced a planned deal to buy OVO Energy's retail business, which would increase its scale. The supplier focuses on home energy technology, offering discounts on solar panels, batteries, and heat pumps.
Who is OVO Energy?
OVO Energy was founded in 2009 and grew significantly in 2020 when it bought SSE's retail business, becoming one of the UK's largest domestic energy suppliers. In 2026, OVO announced a planned agreement to sell its retail business to E.ON. The supplier focuses on customer reward schemes, such as its free loyalty programme for smart meter customers and a scheme that rewards people for shifting their electricity use to off-peak times.
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Tariffs and pricing
E.ON Next provides the lowest-priced deal in this comparison through its Next Fixed 24m v57 tariff, estimated at £1,746 a year. This 24-month fixed contract includes a £200 total exit fee. Conversely, OVO Energy's lowest-priced option is the Simpler Energy variable tariff at £1,805 a year, which operates without a fixed term or exit fees.
Comparing variable options, E.ON Next remains the lower-priced supplier. The Next Pledge Tracker 12m v12 tariff is priced at £1,747 a year, whereas OVO Energy's variable alternative costs £1,805 a year. As variable tariffs, the unit rates for both can fluctuate depending on wholesale energy costs or price cap adjustments.
Households preferring to lock in their unit rates will find E.ON Next's 24-month fix at £1,746 a year costs less than OVO Energy's most affordable fixed equivalent. OVO Energy's lowest fixed tariff is priced at £1,923 a year for a 12-month term and carries a £100 exit fee.
Tariff options
E.ON Next
E.ON Next offers standard variable and fixed-term tariffs, with fixed contracts lasting between 12 and 24 months. It also has a tracker tariff and several specialist options for homes with electric vehicles, heat pumps, or solar panels.
OVO Energy
OVO Energy offers a standard variable tariff alongside 12-month fixed-term deals. Some of its fixed tariffs come bundled with extra services like boiler cover or a green electricity upgrade. It also has a specialist add-on for electric vehicle drivers.
Customer reviews
OVO Energy holds a higher Trustpilot rating of 4.7 out of 5, based on more than 293,000 reviews. E.ON Next follows with a 4.5 out of 5 rating from over 219,000 reviews. Data indicates both suppliers reply to 99% of their negative reviews.
Trustpilot feedback for OVO Energy frequently mentions polite staff and quick query resolution, although some users report long wait times when attempting to contact customer service. E.ON Next reviewers also note efficient staff interactions, while negative comments tend to focus on pricing concerns, incorrect advice, and unexpected direct debit increases.
In the annual Which? customer satisfaction survey, E.ON Next achieved a score of 66, compared to OVO Energy's 61. Both suppliers received 2 out of 5 for overall customer service and value for money. However, E.ON Next scored 8 out of 10 for smart meters, ahead of OVO Energy's 5 out of 10.
App quality
Both suppliers provide apps with over a million installs, with E.ON Next recording higher ratings across both major operating systems. On the App Store, E.ON Next holds a 4.8 out of 5 rating from 49,000 reviews, while OVO Energy scores 4.6 out of 5 from 18,000 reviews. Both iOS applications have received recent updates.
The rating difference is more pronounced on Android devices. The E.ON Next app scores 4.3 out of 5 on Google Play, whereas OVO Energy's app sits at 3.0 out of 5. Furthermore, OVO Energy has a net-positive score of 1.3% on Android, compared to 68.4% for E.ON Next.
A sample of recent iOS reviews for E.ON Next indicates that while many users are satisfied, some report unexpected logouts and limited energy monitoring graphs. Sampled iOS reviews for OVO Energy frequently note clear displays of historical energy consumption, though a portion of users report loading issues on specific devices.
Service and support
E.ON Next places 3rd in the Citizens Advice ratings with an overall score of 3.71 out of 5, while OVO Energy ranks 8th with a score of 3.3 out of 5. Both suppliers maintain formal vulnerability commitments registered with the organisation.
OVO Energy reports shorter phone queues, with an average call centre wait time of 1 minute 33 seconds, compared to 2 minutes 3 seconds for E.ON Next. OVO Energy responds to 98.5% of emails within two days, whereas E.ON Next responds to 90.7% in the same timeframe. Additionally, OVO Energy records an average social media response time of 6 minutes 53 seconds; E.ON Next does not currently publish this metric.
Citizens Advice data shows E.ON Next receives 29.8 complaints per 10,000 customers, compared to 39.5 for OVO Energy. E.ON Next operates its phone lines Monday to Thursday from 9am to 5pm, and Friday from 9am to 4pm. OVO Energy's lines are open weekdays from 9am to 5pm. Both suppliers close on weekends and accept Direct Debit, cash, cheque, and prepayment.
Complaints and Performance
In the fourth quarter of 2025, E.ON Next received 795 complaints for every 100,000 customers. OVO Energy received 1,651 complaints per 100,000 customers in the same period. This means OVO Energy had more than double the number of complaints compared to E.ON Next.
Green energy comparison
E.ON Next
Based on Citizens Advice data for early 2026, E.ON Next supplies a mostly renewable mix. The supplier has invested heavily in UK renewable energy generation. It partners with the Woodland Trust, and choosing a fixed tariff triggers a donation to help restore ancient woodlands. It also offers a specific tariff called Next Gust, which gives 100% renewable electricity backed by UK wind generators.[1][2]
OVO Energy
Based on Citizens Advice data for early 2026, OVO Energy's electricity fuel mix is largely fossil fuels, with some renewable and nuclear energy. The company runs a decarbonisation plan focused on cutting carbon emissions. On behalf of its customers, OVO has planted 5 million trees in schools and communities across the country. Customers can also choose to add a greener electricity upgrade to their fixed tariff.[3]
Our verdict
| If you care most about | Choose |
|---|---|
| The lowest annual cost on our assumptions | E.ON Next |
| Overall customer service | E.ON Next |
| A well-rated mobile app | E.ON Next |
| A greener fuel mix | E.ON Next |
E.ON Next takes the win with significantly cheaper fixed and variable tariffs, stronger app ratings, and a higher Citizens Advice score, though OVO Energy answers calls faster.
E.ON Next leads this comparison primarily due to its lower-priced fixed and variable tariffs. It also maintains higher app ratings for Android users and achieves a higher overall score from Citizens Advice.
OVO Energy may suit households prioritising customer service metrics, as it scores higher on Trustpilot and records faster average call response times. However, its fixed tariffs are priced higher in this comparison, which may deter cost-conscious customers.
Ultimately, E.ON Next may suit households prioritising lower estimated annual costs and higher-rated mobile applications. OVO Energy remains an option for those who value higher Trustpilot ratings and faster phone support, provided they are comfortable with the higher fixed tariff prices.
- Lowest overall, fixed, and variable tariffs in this comparison
- Higher overall Citizens Advice score
- Higher app ratings on both iOS and Android
- Longer average call centre wait times
- Lower Trustpilot rating than OVO Energy
- Higher Trustpilot rating
- Shorter average call centre wait times
- Responds to emails faster
- Higher-priced fixed tariff in this comparison
- Lower Google Play app rating
- Lower overall Citizens Advice score
Frequently asked questions
Which supplier is better overall?
E.ON Next wins our comparison thanks to its cheaper fixed and variable tariffs, stronger app ratings, and a higher Citizens Advice score. OVO Energy scores well on Trustpilot and answers calls slightly faster, but E.ON Next is the stronger all-rounder.
Who has the cheaper fixed deal?
E.ON Next currently offers the cheaper fixed deal. Its 24-month fixed tariff costs £1,746 a year, which is considerably cheaper than OVO Energy's 12-month fixed option at £1,923 a year.
What do customers say about OVO Energy on Trustpilot?
OVO Energy holds a 4.7 out of 5 rating on Trustpilot. Customers frequently praise the staff for being polite and helpful, though some note difficulties with long wait times when trying to reach customer service.
Does E.ON Next or OVO Energy have a better app?
E.ON Next has stronger app ratings on both major platforms. It scores 4.8 out of 5 on the App Store and 4.3 out of 5 on Google Play, whereas OVO Energy's Android app scores just 3.0 out of 5.
Which supplier answers the phone faster?
OVO Energy is faster to reach by phone, with an average call centre wait time of 1 minute 33 seconds. In comparison, E.ON Next customers wait an average of 2 minutes 3 seconds.
Should I switch to E.ON Next or OVO Energy?
If you are looking for the cheapest prices and highly rated mobile apps, E.ON Next is the better choice. However, if you value a higher Trustpilot score and faster email responses, OVO Energy remains a solid option.
Are there exit fees if I leave my tariff early?
This depends on the tariff you choose. E.ON Next's cheapest fixed deal carries a £200 total exit fee, and OVO Energy's cheapest fix has a £100 fee. However, both suppliers offer variable tariffs with no exit fees.
How do these suppliers perform in the Which? survey?
In the latest Which? customer satisfaction survey, E.ON Next achieved a score of 66, while OVO Energy scored 61. Both suppliers received 2 out of 5 for overall customer service and value for money.
What are the opening hours for E.ON Next and OVO Energy?
E.ON Next's phone lines are open Monday to Thursday from 9am to 5pm, and Friday from 9am to 4pm. OVO Energy's lines are open on weekdays from 9am to 5pm. Both suppliers are closed on weekends.
Who offers the cheapest variable tariff?
E.ON Next provides the cheaper variable option, with its tracker tariff costing £1,747 a year. OVO Energy's standard variable tariff costs £1,805 a year.
What changed this month
This month, OVO Energy's iOS app days since last update rose from 13 to 36, OVO Energy's play store days since last update rose from 14 to 36, and E.ON Next's iOS sampled neutral reviews rose from 0 to 1. There were 25 other data changes this month — see the full changelog below for details.
Data changes this month (34)
E.ON Next
- Trustpilot reviews211,533 → 219,212
- iOS app ratings count48,000 → 49,000
- iOS app updates in last 90 days3 → 2
- iOS sampled neutral reviews0 → 1
- Play Store rating4.3445005 → 4.324643
- Play Store ratings count15,798 → 16,070
- Play Store days since last update9 → 4
- Play Store positive ratings %83.5 → 82.6
- Play Store negative ratings %13.7 → 14.2
- Play Store neutral ratings %2.8 → 3.2
- Play Store net-positive %69.8 → 68.4
- Cheapest fixed tariff£1,733 → £1,745.58
- Cheapest tariff£1,733 → £1,745.58
- Cheapest fixed tariff exit fee£100 → £200
- Cheapest fixed tariff term12 months → 24 months
OVO Energy
- Trustpilot reviews287,327 → 293,863
- iOS app days since last update13 → 36
- iOS app updates in last 90 days3 → 2
- iOS sampled reviews avg stars4.2 → 3.67
- iOS sampled positive reviews4 → 2
- Play Store rating3.2850413 → 3.0206423
- Play Store ratings count10,351 → 10,621
- Play Store days since last update14 → 36
- Play Store positive ratings %55.4 → 48.2
- Play Store negative ratings %40.2 → 46.9
- Play Store neutral ratings %4.5 → 4.9
- Play Store net-positive %15.2 → 1.3
- Cheapest fixed tariff£1,797.13 → £1,923.42
- Cheapest tariff£1,797.13 → £1,804.82
- Cheapest tariff exit fee£100 → £0
- Cheapest tariff term12 months → 0 months
- Tariff count5 → 4
- Fixed tariffs available4 → 3
- Longest fixed term24 months → 12 months
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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.