E.ON Next Utility Warehouse (August 2026)
Overview
E.ON Next is the stronger option for most households due to its better customer service scores, faster support, and cheaper fixed tariff.
E.ON Next performs better across most of our key metrics, scoring higher for customer service, app ratings, and fixed-tariff pricing. Utility Warehouse offers a cheaper variable tariff, though its call wait times and overall Citizens Advice score are lower.
About E.ON Next and Utility Warehouse
Who is E.ON Next?
E.ON Next is part of the E.ON group and is one of the UK's largest energy suppliers. It was set up to handle the group's household customers and took on millions of accounts after E.ON bought npower. Today, it supplies energy to homes across the country and focuses on smart meters and low-carbon technology. The supplier won Best Flexible Storage Project at the Utility Week Flex Awards for a battery storage trial. It also won a 2026 E+E Leader Award for a project helping vulnerable households, and E.ON UK was named in the Top 10 of The Sunday Times Best Places to Work in 2026.
Who is Utility Warehouse?
Utility Warehouse is part of Telecom Plus and is one of the UK's largest energy suppliers. It operates as a multi-utility company, meaning it sells energy alongside broadband, mobile phone plans, and insurance. Instead of spending heavily on advertising, it grows through a network of independent partners who recommend its services. Customers get access to cheaper energy rates, better EV off-peak deals, and other perks if they take out multiple services at the same time. It offers variable, fixed, and EV tariffs, but the best deals are kept for those who buy more than just energy. In the 2025 Uswitch Energy Awards, Utility Warehouse placed joint first for Overall Customer Satisfaction and was named a Recommended Provider for Energy Companies in 2025.
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
Utility Warehouse currently offers the cheapest overall deal in this comparison. Its UW Tracker Saver 4 variable tariff costs £1,698 a year and has no fixed term, though it does carry a £150 exit fee.
E.ON Next's lowest-priced option is the Next Fixed 24m v57 tariff, which costs £1,746 a year. This is a 24-month fixed deal that includes a £200 exit fee.
Households looking to lock in their unit rates will find E.ON Next provides the cheaper fixed tariff at £1,746 a year. Utility Warehouse's lowest fixed option costs £1,806 a year for an 11-month term, with a £150 exit fee. For standard variable tariffs, Utility Warehouse is the cheaper choice at £1,698 a year, compared to £1,747 a year from E.ON Next.
Tariff Options
E.ON Next
E.ON Next offers a range of energy plans for households, including standard variable options, fixed-term deals, and specialist tariffs for electric vehicle owners.
Utility Warehouse
Utility Warehouse provides several energy plans, covering standard variable rates, tracker options, fixed terms, and specialist electric vehicle tariffs. The off-peak rate gets cheaper if you bundle more services.
Customer reviews
E.ON Next holds a 4.5 out of 5 rating on Trustpilot, based on 219,212 reviews. Utility Warehouse scores 4.2 out of 5 from 81,260 reviews. E.ON Next receives a higher proportion of top marks, with 74% of its reviews rating it five stars, compared to 70% for Utility Warehouse. Meanwhile, 14% of Utility Warehouse reviews are one-star, whereas E.ON Next receives 9%.
Review themes indicate E.ON Next customers frequently highlight polite and efficient staff who help resolve problems. However, some users report issues with pricing, incorrect advice leading to higher bills, and occasional website or app glitches. Utility Warehouse customers often mention helpful staff and the convenience of grouping multiple services. On the negative side, some report long response times and unexpected charges.
The latest Which? annual survey shows Utility Warehouse scoring 69 overall, compared to E.ON Next's 66. Utility Warehouse receives 3 out of 5 for overall customer service and value for money, while E.ON Next scores 2 out of 5 in both categories. Both suppliers score well for helping those who need it, with Utility Warehouse achieving 10 out of 10 and E.ON Next scoring 9 out of 10. E.ON Next performs better on smart meters, scoring 8 out of 10 against Utility Warehouse's 7 out of 10, and scores higher on complaints handling with 8 out of 15 compared to 6 out of 15.
App experience
E.ON Next holds higher app ratings across both major platforms. On the App Store, it scores 4.8 out of 5 from 49,000 ratings, while Utility Warehouse scores 4.5 out of 5 from 11,000 ratings. E.ON Next has over a million installs on Google Play, and Utility Warehouse has surpassed 500,000. On Google Play, E.ON Next scores 4.3 out of 5, placing it ahead of Utility Warehouse at 4.1.
Recent Apple user reviews indicate E.ON Next customers appreciate the app but occasionally report being logged out despite enabling face ID, alongside limited energy monitoring graphs. Utility Warehouse users frequently mention the cashback card feature, which helps reduce bills, but some report flaws when trying to top up meters and issues with bundled broadband services.
Both suppliers have updated their apps recently. Utility Warehouse released an update 2 days ago to improve performance, while E.ON Next updated its app 9 days ago to fix bugs.
Customer service and support
E.ON Next places 3rd overall in the latest Citizens Advice rankings with a score of 3.71 out of 5. Utility Warehouse sits in 14th place, scoring 2.45 out of 5.
E.ON Next customers wait an average of 2 minutes 3 seconds to speak to a representative, while Utility Warehouse customers wait an average of 7 minutes 16 seconds. E.ON Next responds to 90.7% of emails within two days, compared to 40.5% for Utility Warehouse. Both suppliers have formal vulnerability commitments registered with Citizens Advice.
E.ON Next contact lines are open Monday to Thursday from 9am to 5pm, and Friday from 9am to 4pm, but are closed at the weekend. Utility Warehouse operates on weekdays from 8:30am to 5pm and offers Saturday support from 9am to 4:30pm.
Complaints and performance
In Q4 2025, E.ON Next received 795 complaints for every 100,000 customers. This is less than half the number received by Utility Warehouse, which had 1,815 complaints per 100,000 customers in the same period.
Green Energy Comparison
E.ON Next
According to Citizens Advice data for January to March 2026, E.ON Next's electricity fuel mix is largely renewable, with some fossil fuels and nuclear. The supplier offers 100% renewable electricity on its specialist EV tariffs. It also supports environmental projects, such as making donations to the Woodland Trust when customers sign up for certain EV deals.[1][2]
Utility Warehouse
According to Citizens Advice data for January to March 2026, Utility Warehouse's electricity fuel mix is largely fossil fuels, with some nuclear. To help the environment, the company runs a tree-planting scheme through the UW Foundation. It plants a tree in the UK every time a customer signs up for three or more services.[3]
Our verdict
| If you care most about | Choose |
|---|---|
| The lowest annual cost on our assumptions | Utility Warehouse |
| Overall customer service | E.ON Next |
| A well-rated mobile app | E.ON Next |
| A greener fuel mix | E.ON Next |
E.ON Next is the stronger option for most households due to its better customer service scores, faster support, and cheaper fixed tariff.
E.ON Next may suit households prioritising customer support metrics, as it answers calls and emails faster and ranks 3rd with Citizens Advice. It also provides a cheaper fixed tariff and holds higher app ratings across both major platforms.
Utility Warehouse may suit households looking for the cheapest variable tariff in this comparison, or those who require weekend opening hours. However, it has slower average response times and a lower overall Citizens Advice score.
- Ranks 3rd with Citizens Advice
- Shorter call centre wait times
- Cheaper fixed tariff
- Higher app ratings on iOS and Android
- Lower Which? overall service score
- Closed at the weekend
- Cheaper standard variable tariff
- Higher Which? overall customer service score
- Open on Saturdays
- Longer call centre wait times
- Slower email response times
- Ranks 14th with Citizens Advice
Frequently asked questions
Which supplier is better overall?
E.ON Next performs better across most of our key metrics. It ranks much higher with Citizens Advice, answers calls and emails faster, and holds stronger app ratings. Utility Warehouse does offer a cheaper variable tariff, but falls behind on service speed.
Who has the cheaper fixed tariff?
E.ON Next offers the cheaper fixed tariff at £1,746 a year for a 24-month term. Utility Warehouse's cheapest fixed option costs £1,806 a year for an 11-month term.
Who has better customer reviews?
E.ON Next holds a higher Trustpilot rating of 4.5 out of 5, compared to 4.2 out of 5 for Utility Warehouse. However, Utility Warehouse scores slightly higher in the Which? annual survey, achieving 69 overall compared to E.ON Next's 66.
Are the mobile apps easy to use?
Yes, both suppliers offer well-rated apps, but E.ON Next scores higher on both platforms. It holds 4.8 out of 5 on the App Store and 4.3 on Google Play, whereas Utility Warehouse scores 4.5 and 4.1 respectively.
Which supplier answers the phone faster?
E.ON Next is significantly faster, answering calls in an average of 2 minutes 3 seconds. Utility Warehouse customers wait much longer, with an average wait time of 7 minutes 16 seconds.
Should I choose E.ON Next or Utility Warehouse?
If you want faster customer service, a cheaper fixed tariff, and highly rated apps, E.ON Next is the stronger choice. If you prefer a cheaper variable tariff and need support on Saturdays, Utility Warehouse might be a better fit.
Do these suppliers charge exit fees?
Yes, both charge exit fees on their cheapest tariffs. E.ON Next charges a £200 exit fee on its 24-month fixed deal, while Utility Warehouse charges a £150 exit fee on its variable UW Tracker Saver 4 tariff.
Are they open at the weekend?
Utility Warehouse is open on Saturdays from 9am to 4:30pm, but closed on Sundays. E.ON Next is closed all weekend.
How do they perform in the Which? annual survey?
Utility Warehouse scores slightly better overall with a score of 69, beating E.ON Next's 66. Utility Warehouse also scores higher for overall customer service and value for money, though E.ON Next performs better on smart meters and complaints handling.
What changed this month
This month, E.ON Next's iOS sampled neutral reviews rose from 0 to 1, Utility Warehouse's cheapest tariff term fell from 12 months to 0 months, and E.ON Next's cheapest fixed tariff exit fee rose from £100 to £200. There were 23 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
Utility Warehouse
- Trustpilot reviews79,523 → 81,260
- iOS app days since last update13 → 2
- iOS sampled reviews avg stars2.4 → 2.67
- iOS sampled positive reviews2 → 1
- iOS sampled negative reviews3 → 2
- Play Store rating4.202414 → 4.186519
- Play Store ratings count11,089 → 11,150
- Play Store days since last update14 → 2
- Play Store positive ratings %79.5 → 79.1
- Play Store negative ratings %15.6 → 15.9
- Play Store neutral ratings %4.9 → 5.1
- Play Store net-positive %63.9 → 63.2
- Cheapest variable tariff£1,682.7 → £1,697.5
- Cheapest fixed tariff£1,670.87 → £1,806.26
- Cheapest tariff£1,670.87 → £1,697.5
- Cheapest tariff term12 months → 0 months
- Cheapest fixed tariff term12 months → 11 months
- Shortest fixed term12 months → 11 months
- Longest fixed term12 months → 11 months
Related comparisons
Related reviews
Sainsbury’s Energy Review
Sainsbury's Energy operates under a licence agreement with E.ON Next, which is part of the E.ON group, one of the UK's biggest domestic suppliers. E.ON Next physically supplies the gas and electricity and runs the billing systems, while Sainsbury's Energy has its own dedicated customer service team.
Read review→
Utility Warehouse Review
Utility Warehouse started in 2002 and is owned by Telecom Plus. It has grown to become one of the UK's biggest domestic energy suppliers. As well as gas and electricity, the company offers broadband, mobile phone plans, and home insurance.
Read review→
Cheapest Fixed Energy Tariffs in the UK
As we head into summer and heating usage drops, many households take the opportunity to reassess their energy bills. When considering a fixed tariff, the main challenge is balancing price certainty with flexibility. A fixed deal locks in your unit rates and standing charge for the duration of the co
Read article→Related guides
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→
Who is cheaper than British Gas? (2026)
British Gas is one of the UK's largest energy suppliers, but staying on its default standard variable tariff is currently one of the most expensive ways to pay for your gas and electricity. Following a 13% rise in the Ofgem price cap on 1 July 2026, household energy bills have jumped again, driven b
Read guide→
How to get a free Octopus Energy cuddly toy?
If you are an Octopus Energy customer, you might recognise their pink, eight-legged mascot, Constantine. Fluffy plush versions of the mascot have become highly popular, often appearing across social media and in homes around the UK.
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.