E.ON Next Utility Warehouse (September 2026)
Overview
E.ON Next wins with stronger customer service scores and a cheaper fixed tariff, though Utility Warehouse offers a cheaper variable option.
E.ON Next leads across most customer service metrics and provides a cheaper fixed deal. While both suppliers are effectively identical on their cheapest overall prices, Utility Warehouse falls behind on call wait times and email responsiveness.
About E.ON Next and Utility Warehouse
Who is E.ON Next?
E.ON Next is the retail arm of E.ON SE and launched around 2020. It is one of the UK's largest domestic suppliers. In May 2026, the company announced a planned deal to buy OVO Energy, which would increase its scale. The supplier focuses on smart energy products and its E.ON Next Gen Home concept, which packages home technology like solar panels, batteries, and heat pumps into a single monthly payment.
Products & services
Awards & recognition
Who is Utility Warehouse?
Utility Warehouse is run by Telecom Plus PLC and was founded in 2002. It is one of the UK's biggest domestic suppliers and uses a direct selling model through a network of independent partners. What sets the company apart is its bundling system. Customers can get cheaper energy rates and a cashback card by taking out energy alongside broadband, mobile, and home insurance on a single monthly bill.
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
Both suppliers offer cheapest overall tariffs that are effectively identical in price. E.ON Next's lowest-priced option is a fixed deal, Next Fixed 24m Exclusive v11, at £1,510 a year. In contrast, Utility Warehouse's cheapest is a variable tracker, UW Tracker Saver 5, costing £1,511 a year.
For households looking to lock in rates, E.ON Next provides the cheaper fixed contract at £1,510 a year over a 24-month term. Utility Warehouse's lowest fixed option costs £1,595 a year for 11 months. Both charge exit fees on these tariffs: £200 from E.ON Next and £150 from Utility Warehouse.
If you prefer a variable structure, Utility Warehouse offers the cheaper tracker at £1,511 a year, compared to E.ON Next's equivalent at £1,560 a year. Utility Warehouse applies a £150 exit fee to its tracker, whereas E.ON Next charges £50.
E.ON Next and Utility Warehouse: tariff options
E.ON Next
These are the household tariffs currently available in our comparison data. Prices and availability can vary by region, meter type and payment method.
Utility Warehouse
These are the household tariffs currently available in our comparison data. Prices and availability can vary by region, meter type and payment method.
Customer reviews
E.ON Next holds a higher Trustpilot score of 4.5 out of 5 across 225,716 reviews, while Utility Warehouse scores 4.2 out of 5 from 83,008 reviews. E.ON Next also maintains a larger share of five-star ratings, at 75% compared to Utility Warehouse's 70%.
Review summaries indicate that E.ON Next customers often highlight helpful staff, professional engineers, and a smooth switching process, though some note rising costs and communication gaps. Utility Warehouse users frequently mention polite support and the convenience of bundling services on a single bill, but report issues with long phone wait times and reaching customer support.
In the annual Which? survey, Utility Warehouse achieves a slightly higher overall score of 69, compared to E.ON Next's 66. Both suppliers generally receive 2 or 3 out of 5 across most sub-categories, including customer service and value for money.
App quality and features
On Google Play, E.ON Next holds a rating of 4.3 out of 5 from 16,278 reviews, slightly ahead of Utility Warehouse's 4.2 out of 5 across 11,195 reviews.
App Store data is not currently available for E.ON Next. Utility Warehouse scores 4.5 out of 5 based on 11,000 ratings on the iOS platform.
Both applications have received recent updates. Utility Warehouse's recent iOS feedback highlights the convenience of its cashback card, although some users report technical issues when attempting to top up.
Customer service and support
Average wait: 2.1 min
Hours: Mon–Thu 9am–5pm, Fri 9am–4pm, closed Saturday, closed Sunday
Average wait: 7.3 min
Hours: Weekdays 8:30am–5pm, open Saturday 9am–4:30pm, closed Sunday
Replies: 91% within 2 days
Hours: 24/7
Replies: 41% within 2 days
Hours: 24/7
E.ON Next performs more strongly in Citizens Advice metrics, achieving a score of 3.71 out of 5 and ranking 3rd. Utility Warehouse scores 2.45 out of 5, placing it 14th.
Call wait times present a notable difference. E.ON Next customers wait an average of 2 minutes 3 seconds to speak to an agent, whereas Utility Warehouse averages 7 minutes 16 seconds. E.ON Next also processes emails more quickly, responding to 90.7% within two days compared to 40.5% for Utility Warehouse.
Both suppliers maintain formal vulnerability commitments registered with Citizens Advice. For operating hours, Utility Warehouse provides weekend support, opening on Saturdays from 9am to 4:30pm, while E.ON Next remains closed on weekends.
Complaints and performance
E.ON Next received 760 complaints per 100,000 customers in the second quarter of 2026. Utility Warehouse received 2,042 complaints per 100,000 customers in the first quarter of 2026.
Looking at how fast they fix issues, E.ON Next resolved 49.61% of complaints by the end of the next working day and 89.69% within eight weeks in Q2 2026. Utility Warehouse resolved 82.75% of complaints by the next working day and 99.61% within eight weeks in Q1 2026.
For E.ON Next, the main reasons for complaints were customer service (32.28%), payments (12.16%), and general billing and meter reading issues (11.19%). For Utility Warehouse, the top reasons were customer service (38.35%), billing (32.63%), and smart meter installation (7.59%).
Green Energy Comparison
E.ON Next
E.ON Next supplies a mostly renewable mix, with some fossil fuels and a small amount of nuclear. The supplier offers specific green tariffs, such as its Next Gust plan, which comes with 100% renewable electricity backed by UK wind generators. Its Next Pumped tariff also includes 100% renewable electricity. As well as this, the company pledges to donate £500,000 to the Woodland Trust over three years to help restore ancient woodlands and invests in local clean energy systems like solar and battery storage.
Utility Warehouse
Utility Warehouse supplies an electricity mix that is largely fossil fuels, with some nuclear and other sources. The supplier supports the Smart Export Guarantee, which pays customers who generate their own renewable electricity for the power they send back to the grid. It also runs the UW Foundation, which funds green initiatives such as tree planting.
Our verdict
| If you care most about | Choose |
|---|---|
| The lowest annual cost on our assumptions | Either |
| Overall customer service | E.ON Next |
| A well-rated mobile app | Utility Warehouse |
| A greener fuel mix | E.ON Next |
E.ON Next wins with stronger customer service scores and a cheaper fixed tariff, though Utility Warehouse offers a cheaper variable option.
Based on the available data, E.ON Next leads this comparison. It secures higher rankings across customer service metrics and provides a cheaper fixed tariff.
Utility Warehouse may suit households looking for a cheaper variable option or bundled services, but its longer call wait times and lower Citizens Advice score are notable drawbacks. For those who prefer a fixed deal and prioritise faster customer service response times, E.ON Next is the stronger option.
- Cheaper fixed tariff
- Higher Citizens Advice score
- Shorter call wait times
- Faster email responses
- Higher exit fees on fixed deals
- Closed on weekends
- Cheaper variable tariff
- Open on Saturdays
- Long call wait times
- Lower Citizens Advice score
- Slow email responses
Frequently asked questions
Which supplier is better overall?
E.ON Next performs better across most metrics in our comparison. It has a higher Citizens Advice score, shorter call wait times, and offers a cheaper fixed tariff.
Who offers the cheapest fixed tariff?
E.ON Next offers the cheaper fixed tariff in our comparison. Its cheapest fixed deal costs £1,510 a year, while Utility Warehouse's cheapest fixed option costs £1,595 a year.
Which supplier has better Trustpilot reviews?
E.ON Next has a higher Trustpilot rating, scoring 4.5 out of 5 compared to Utility Warehouse's 4.2 out of 5. E.ON Next also has a higher percentage of five-star reviews.
Which supplier has the better Android app?
E.ON Next has a slightly higher rating on Google Play, scoring 4.3 out of 5 compared to Utility Warehouse's 4.2 out of 5.
Who answers the phone faster?
E.ON Next answers the phone much faster. Its customers wait an average of 2 minutes 3 seconds to speak to an agent, while Utility Warehouse customers wait an average of 7 minutes 16 seconds.
Should I choose E.ON Next or Utility Warehouse?
If you want a cheaper fixed tariff and shorter call wait times, E.ON Next is the better choice. However, if you prefer a variable tariff or want weekend support, Utility Warehouse may suit you better.
Are the cheapest tariffs fixed or variable?
E.ON Next's cheapest overall tariff is a fixed deal, while Utility Warehouse's cheapest overall tariff is a variable tracker.
Do both suppliers offer weekend support?
No. Utility Warehouse is open on Saturdays from 9am to 4:30pm, but E.ON Next is closed on weekends.
What do customers complain about most?
E.ON Next customers sometimes complain about rising costs and communication gaps. Utility Warehouse customers frequently mention long phone wait times and difficulties reaching support staff.
What changed this month
This month, E.ON Next's iOS app updates in last 90 days fell from 3 to 0, E.ON Next's iOS sampled neutral reviews fell from 1 to 0, and Utility Warehouse's iOS sampled neutral reviews rose from 0 to 1. There were 26 other data changes this month — see the full changelog below for details.
Data changes this month (33)
E.ON Next
- Trustpilot reviews219,212 → 225,716
- Trustpilot 5-star %74 → 75
- Trustpilot 4-star %12 → 11
- iOS app rating4.8 → no longer available
- iOS app ratings count49,000 → no longer available
- iOS app days since last update4 → no longer available
- iOS app updates in last 90 days3 → 0
- iOS sampled reviews avg stars3 → no longer available
- iOS sampled neutral reviews1 → 0
- Play Store rating4.324643 → 4.340909
- Play Store ratings count16,070 → 16,278
- Play Store days since last update5 → 4
- Play Store positive ratings %82.6 → 83.1
- Play Store negative ratings %14.2 → 13.8
- Play Store net-positive %68.4 → 69.3
- Cheapest variable tariff£1,747 → £1,560.38
- Cheapest fixed tariff£1,745.58 → £1,509.55
- Cheapest tariff£1,745.58 → £1,509.55
- Tariff count5 → 6
- Fixed tariffs available3 → 4
Utility Warehouse
- Trustpilot reviews81,260 → 83,008
- iOS app days since last update4 → 5
- iOS sampled reviews avg stars2.67 → 2.5
- iOS sampled neutral reviews0 → 1
- Play Store rating4.186519 → 4.1761994
- Play Store ratings count11,150 → 11,195
- Play Store days since last update4 → 6
- Play Store positive ratings %79.1 → 78.9
- Play Store negative ratings %15.9 → 16
- Play Store net-positive %63.2 → 62.9
- Cheapest variable tariff£1,697.5 → £1,510.93
- Cheapest fixed tariff£1,806.26 → £1,595.22
- Cheapest tariff£1,697.5 → £1,510.93
Related comparisons
Related reviews
Good Energy Review
Founded in 1999, Good Energy is one of the UK's oldest green energy suppliers. It is an established domestic supplier that focuses on renewable electricity and carbon-neutral gas. In April 2025, Good Energy was bought by Esyasoft, a Dubai-based energy software company. This deal meant Good Energy mo
Read review →
Utility Warehouse Review
Utility Warehouse was founded in 2002 and is owned by Telecom Plus PLC, a company set up in 1996. Based in London, it has grown to become one of the UK's biggest domestic energy suppliers.
Read review →EDF FreePhase Static prices
Fixed day, night and peak bands for twelve months, with free electricity at set times and no exit fees.
Read more →Related guides
Does Octopus Energy provide solar panels?
Yes. Octopus Energy is now one of the largest domestic solar installers in the UK. Through its engineering arm, Octopus Energy Services, the supplier offers a full installation service for solar panels, home batteries, and inverters.
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 →
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.