Octopus Energy vs E.ON Next (2021 Comparison)

Octopus and E.ON Next are two of the greenest energy suppliers in the UK market right now. E.ON Next is part of E.ON, a member of the big six energy suppliers.

Here we will directly compare the two suppliers to see which one offers the best overall package to their customers:

🏆 Our top rated supplier Octopus Energy is currently offering £50 credit to any new customer that uses our referral link. Click below to see why we rate them so highly and get your £50.

Read our review

Who are E.ON Next?

E.ON Next is the latest part of the EON group. Their primary focus is to supply renewable energy to customers across the UK.

Essentially E.ON Next was E.ON’s answer when the energy market saw several new suppliers using technology and other resources in order to drive down prices.

E.ON next was created in 2020 and took on previous Npower customers, which E.ON brought out in 2019.

Who are Octopus Energy?

Octopus Energy is an energy provider that supplies renewable energy. Established in 2016 and part of the wider Octopus Group of companies, they are the largest investor in the UK solar industry.

In addition, Octopus Energy also invests in wind generation, energy through the anaerobic digestion of plants, and rapid response gas generation.

Octopus now has over two million customers across the UK and has won several awards, including the Uswitch supplier of the year and the Which? Energy Supplier of the year 2021.

Octopus has also taken on customers from recently collapsed suppliers, including Avro Energy, Engie, Flow Energy, GB Energy Supply, Gen4U and Iresa.

Octopus vs E.ON Next: What’s the difference in price?

We ran a like for like comparison directly on the supplier’s websites. For fairness, we used the following details:

  • Dual Fuel supply
  • Standard Meter
  • Medium usage (3-bedroom house with four occupants)
  • 2900 kWh of electricity and 12000 kWh for gas
  • Postcode in the South East of England

Let us look at how they compared:

E.ON Next

On E.ON Next’s website, we were offered just one tariff as follows:

Next 2 Year V9

This fixed price tariff will cost you £191.05 per month or £2292.61 per year as of October 2021.


We consulted the Octopus Energy website also to obtain a quote based on the exact details:

The lowest price tariff was Octopus Fixed at £144.47 per month or  £1733.64 a year.

We were also offered their greenest tariff: Supergreen Octopus costing £146.99 per month, which works out at £1763.88 for a year.

Conclusion: Octopus Energy’s tariffs offer better value for money compared to the E.ON Next tariff. For example, if you sign up for the Octopus Fixed tariff, you would pay £558.87 less than you would if you choose to switch to E.ON Next. That’s a huge difference! This makes Octopus Energy the stand out value for money supplier.

Octopus wins on value for money.

Octopus vs E.ON Next: What’s the difference in tariff options?

E.ON Next

E.ON Next currently only offers us one tariff:

Next 2 Year v9 is a fixed 24-month tariff with no early exit fees should you supplier or tariff early. E.ON next offer 100% renewable electricity as standard on all their tariffs.


Currently, Octopus Energy is only offering two tariffs to new customers:

Super Green Octopus

The Supergreen octopus tariff offers 100% renewable electricity, and it also fully offsets your carbon usage from the gas you use at home. From an energy point of view, your carbon footprint is zero. The tariff unit rates are fixed for two years, and if you choose to change supplier early, there are no exit fees.

Octopus Fixed

Octopus Energy’s most popular tariff is Octopus Fixed. Costing customers slightly less per month than Supergreen Octopus, this tariff is also fixed for 24 months, and you get 100% renewable electricity as standard. Like Supergreen Octopus, there are no early exit fees should you wish to change supplier or tariff early.

Conclusion: When it comes to tariffs features, there isn’t a lot of difference here. However, Octopus Energy’s Supergreen Octopus tariff wins this area of comparison because they offer their customers an alternative option to offset their carbon usage completely.

Octopus vs E.ON Next: Who offers the greenest energy?

Renewable energy and being sustainable are at the heart of both of these suppliers offerings.

Let’s take a look to see how they compare in this area:

E.ON Next

E.ON next advertise heavily that 100% of the electricity they generate is from renewable sources. This means that the electricity their customers use is sourced from; Their own renewable energy generation plants, supply agreements with independent renewable energy wind and solar plants and purchase renewable electricity certificates.

On their website E.ON Next states, they generate enough electricity at their biomass plant to supply 100,000 homes across the UK. While green gas is not mentioned at all on the one tariff on offer, we understand that E.ON Next has invested in green gas certificates for their greenest tariffs (not currently on offer).


Just like E.ON Next, Octopus put their green energy credentials at the forefront of its offering. They offer 100% renewable electricity on all tariffs as standard. Much of this they generate at their own plants, and they invest heavily in the production of renewable electricity and green gas from biomass plants.

Octopus’s Supergreen customers also receive a carbon-neutral gas supply which is offset with Octopus’s partnership with Renewable World.

Conclusion: These are two suppliers who are doing their bit for the production of renewable energy, and when it comes down to it we can’t pick one over the other – They are both green giants! It’s a tie.

Octopus vs E.ON Next: Who has better customer reviews?

Trustpilot is the most reliable website to compare 1000’s of genuine customer reviews. Here is our comparison based on the information available:

Here is what we found:

  • E.ON Next scored 4.3 out of 5 based on over 8,000 reviews
  • Octopus scored 4.8 out of 5 based on over 70,000 reviews

We have to assume the low number of E.ON Next reviews is due to them only being around since 2020 as there is a significant difference.

Overall, 72% of E.ON Next customers rate them as excellent. At the other end of the scale, 12% rated them as bad, and the additional 16% fell somewhere in between.

In the case of Octopus, 90% of their customers rate them as excellent, and just 3% rated them as bad. Leaving just 7% of customers somewhere between.

Both companies respond to customers reviews, both good and bad.

Both companies receive a high number of positive reviews. However, in the case of E.ON Next, when customers feel let down is the time it takes to answer the phone. Some customers state they have had to resort to messaging on Twitter to get a reply. It’s also clear that their customer service agents are a credit to them, with many of them being personally thanked on Trustpilot.

Similarly, Octopus customers more often state that the agent they spoke to was helpful and resolved their queries. There are also comments about switching being easy and that they are always clear and efficient when it comes to communications.

Conclusion: Neither supplier is doing a terrible job of keeping their customers happy. However, the stats speak for themselves, and Octopus wins this section due to their number of excellent reviews and fantastic positive feedback.

Octopus vs E.ON Next: Who has the better website and app?

We tried out both E.ON Next and Octopus’s websites. Both are really well laid out, and we had no trouble finding our way around. It’s possible to view tariffs, bills and input meter readings and update any personal details.

You can download apps for both E.ON next and Octopus Energy onto a smartphone or tablet. These apps have been designed for easy account management where you can check your usage, bills and tariffs. However, in Octopus’s case, customers rank their app poorly at just 1.6 out of 5 stars due to the apps poor functionality and regular crashes.

The E.ON Next App seems a little more popular and is rated 3.9 out of 5, proving that they have developed a better functioning and user-friendly app.

Conclusion: Both energy suppliers offer easy to use account management through a browser. However, the app lets Octopus down here as many customers find it frustrating to use and not functional. E.ON Next is the winner here.

Octopus vs E.ON Next: Who has the better customer service?

We checked data on the Citizens advice website to compare customer reviews. We believe they offer the most unbiased view based purely on facts obtained from Ofgem and the suppliers directly.

Please note in this case, E.ON Next are not listed separately from E.ON, so we have used these stats here for comparison:

OctopusE.ON Next
Average call centre wait time02:2403:26
Emails responded to with 2 days67.8%65%
% customers with an accurate bill96.6%94.9%
Switches completed < 15 days98.6%98.9%
Opening hours9 am – 5 pm (4 pm Friday)8 am – 8 pm (9 am – 6 pm Saturday)
Contact via PhoneYesYes
Contact via EmailYesYes
Contact via WebchatNoYes
Source: Citizens advice
Conclusion: On comparing the data, Octopus outperforms E.ON Next in almost every area, especially when answering calls. Thus, making them the clear leader in customer service.

Octopus wins on customer service.

Octopus vs E.ON Next: Who has less complaints?

We looked at the complaint data each energy provider openly provides. To make sure we cover the same period for both, we will look at Q3 for 2020.

We have summarised the data in the below table:

Octopus EnergyE.ON Next
Complaints per 100,000 customers488197
Resolved next working day57%82.5%
Resolved in 8 weeks88%99%
Sources: Octopus Energy Q1 2021. Shell Energy Complaints
Conclusion: E.ON for this period clearly stands out as the company that received fewer complaints and won here. However, please bear in mind that we could not find the latest quarter for their complaint stats.

E.ON Next wins when it comes to complaints.

Octopus vs E.ON Next: What are the main differences between the two?

These two suppliers have offerings that are similar to each other. They both focus on green energy generation and offer their customer’s fixed tariffs. Here is a recap on how they measured up:

  • In the price category, Octopus came out head with tariffs which offered better value for money.
  • Octopus took the lead again with two options compared to E.ON Next single tariff when it comes to tariff choices.
  • Both Octopus and E.ON Next were evenly matched when we compared their green credentials.
  • Octopus had the best customer reviews on Trustpilot.
  • When it came to comparing websites and apps – E.ON Next came out ahead with their functional app.
  • E.ON Next had fewer complaints for the quarter we compared.

Is Octopus energy better than E.ON Next?

This head to head comparison was close, but Octopus wins the battle coming out in front in three categories and drawing in one.

And the winner is… Octopus Energy!

🏆 Our top rated supplier Octopus Energy is currently offering £50 credit to any new customer that uses our referral link. Click below to see why we rate them so highly and get your £50.

Read our review



Rob runs Energy-Review.co.uk. The project initially began when he switched energy suppliers for the first time and found there wasn't a website that provided simple, data backed reviews on all the suppliers available. Since then, Rob has spent considerable time looking at all publicly available data about each supplier and writing reviews using this information. Reviews are updated as regularly as possible and any data is backed up by a source where necessary. If you find any issues, please use our contact form to let us know.

If you're a customer of this supplier, you can leave your own review below.

Leave a reply