Updated September 30, 2026 · TariffCue Editorial Team
Eon Next vs Green Planet Energy eG
Where Eon Next and Green Planet Energy eG differ
| Compare |  Eon Next |  Green Planet Energy eG |
|---|---|---|
| Exit fee | £25 | €0 |
| Unit rate | £0.324 | €0.166 |
| Renewable share | 27.3% | 100%Higher |
| Customers | 5,000,000Higher | 200,000 |
| Markets | GB | DE |
| Fixed terms | 12, 24 | Not confirmed |
| Standing charge | Not confirmed | €16.57 |
| Reference annual cost | £166 | Not confirmed |
| Renewable basis | Not confirmed | Own generation |
| EV off-peak rate | £0.085 | Not confirmed |
| Export rate | £0.15 | Not confirmed |
Same on both: Smart meter required (Yes).
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Key differences
- Renewable share is higher at Green Planet Energy eG: 100% vs 27.3%.
- Customers is higher at Eon Next: 5,000,000 vs 200,000.
- Support channels: only Eon Next offers Community.
- Tariff types: only Eon Next offers Fixed, Tracker.
- Tariff types: only Green Planet Energy eG offers Green, Time of use.
- Markets: only Eon Next offers GB.
- Markets: only Green Planet Energy eG offers DE.
Our verdict on each
Eon Next
Eon Next suits households that want several tariff styles and a solar or charger-friendly setup, and it holds a reference annual cost of £166. The trade-off is the exit fee of £25, which matters if you might move supplier early, so compare the term length before you join.
Green Planet Energy eG
Green Planet Energy eG is a cooperative supplier serving 200,000 customers in Germany, and it suits households who want renewable electricity and gas without paying to leave, since the exit fee is €0. The renewable share of 100% comes from its own generation.
Score breakdown
| Area | Eon Next | Green Planet Energy eG |
|---|---|---|
| Cost | 8.8Reference annual cost of £166 ranks 1 of 4; unit rate £0.32 sits at 20 of 23. | 9.1HigherStanding charge of €16.57 ranks 10 of 16 brands, and unit rate €0.17 ranks 9 of 23. |
| Offer | 9.3HigherTariff types cover variable, fixed and tracker, plus an export rate of £0.15 and a required smart meter. | 9.0Tariff types cover green, variable and dynamic, and fuels cover electricity and gas, giving a broad in-house range. |
| Trust | Not confirmed | 9.2A cooperative registered as Green Planet Energy eG in DE, serving 200,000 customers since 1999. |
Licences and countries
| Country | Eon Next | Green Planet Energy eG |
|---|---|---|
| Headquarters | United Kingdom | Germany |
Additional countries for Eon Next: 1. Additional countries for Green Planet Energy eG: 1.
If neither fits
Eni Plenitude has customers at 11,000,000, against 5,000,000 for Eon Next and 200,000 for Green Planet Energy eG.
Eni Plenitude reviewHow they place
| Ranking | Eon Next | Green Planet Energy eG |
|---|---|---|
| Energy suppliers | 29 of 96 | 30 of 96 |
| Smart and dynamic electricity tariffs | 11 of 43 | 12 of 43 |
Every fact side by side
| Fact | Eon Next | Green Planet Energy eG |
|---|---|---|
| Tariff types | Variable, Fixed, Tracker, Ev, Dynamic | Green, Variable, Dynamic, Ev, Time of use |
| Fuels | Electricity, Gas | Electricity, Gas |
| Legal entity | E.ON Next Energy Limited | Green Planet Energy eG |
| Headquarters | United Kingdom | Germany |
| Founded | Not confirmed | 1999 |
| Support channels | Email, Phone, Help centre, CommunityCovers more | Email, Phone, Help centre |
Where each stands against the rest
| Fact | Eon Next | Green Planet Energy eG | Median |
|---|---|---|---|
| Standing charge | Not confirmed | €16.57above the median | €14.99 |
| Renewable share | 27.3%lowest quarter | 100%at the median | 100% |
| EV off-peak rate | £0.085highest quarter | Not confirmed | £0.080 |
| Export rate | £0.15above the median | Not confirmed | £0.12 |
| Customers | 5,000,000highest quarter | 200,000below the median | 850,000 |
Median across 58 listed providers.
Pros and cons
Eon Next
Pros
- Tariff types run to variable, fixed and tracker, a wider spread than Endesa, which lists fixed, time of use and ev.
- Fuels cover electricity and gas, so electricity and gas can sit on the same account.
- Renewable electricity accounts for 27.3% and solar households are paid an export rate of £0.15.
Cons
- Leaving early costs an exit fee of £25, and Eon Next ranks 21 of 29 brands on that measure.
- The unit rate of £0.32 sits at 20 of 23, so the headline rate is not at the front of the table.
- Support runs on email, phone and help centre only, with no live chat channel listed.
Green Planet Energy eG
Pros
- The exit fee is €0, which places Green Planet Energy eG at 1 of 29 brands, so leaving later costs nothing.
- Renewable supply of 100% rests on own generation, so the green claim comes from the cooperative's own generation rather than bought certificates.
- Tariff types cover green, variable and dynamic, so a household can pick a green plan, a variable rate, a dynamic rate or an electric vehicle rate.
Cons
- The standing charge of €16.57 ranks 10 of 16 brands, so a low usage home pays more for the connection than most rivals.
- The unit rate of €0.17 ranks 9 of 23 brands, which is mid table rather than a standout for anyone shopping purely on unit cost.
- A smart meter is required, so the tariff cannot start until a compatible meter is fitted, which adds a step to every switch.
Who each suits
Eon Next
Who it suits
- Households served in GB with rooftop solar or a home charger, who can use the export rate of £0.15 and an off-peak rate of £0.085.
- People who want tariff types to include variable, fixed and tracker so they can change style of plan later.
- Anyone comfortable with a reference annual cost of £166 alongside an exit fee of £25.
Who should look elsewhere
- Shoppers after a green tariff, since Electricity Ratings lists fixed, ev and time of use and Eon Next does not.
- Households that want a prepay option, since Eon Next covers variable, fixed and tracker while Endesa offers fixed, time of use and ev.
- Buyers who expect a cheap exit, since leaving early costs £25 and the brand ranks 21 of 29 on that measure.
Green Planet Energy eG
Who it suits
- Households in DE already on a variable or dynamic rate who want to move to renewable electricity without paying to leave.
- EV owners who want charging priced on the supplier's electric vehicle tariff rather than on a standard rate.
- Gas and electricity households who would rather keep the same cooperative than split the account between suppliers.
Who should look elsewhere
- Endesa buyers, since these tariffs run in DE while Endesa lists fixed, time of use and ev for Spanish households.
- Powerpeers buyers who want a fixed rate from a supplier listing dynamic, fixed and variable, since the range here is green, variable and dynamic.
- Electricity Ratings buyers after a prepay meter, since fixed, ev and time of use includes prepay and the range here is green, variable and dynamic.
Country by country
| Country | Eon Next | Green Planet Energy eG |
|---|---|---|
| Germany | No | Yes |
| United Kingdom | Yes | No |
Questions about each
Eon Next
What does Eon Next cost on a typical year of usage?+
The Next Optimise tariff is listed at a reference annual cost of £166. That is the headline figure to set against other suppliers, and on this comparison Eon Next sits at 1 of 4 brands ranked on that measure. Your own bill will move with your usage.
Is there an exit fee if I leave Eon Next early?+
Yes, leaving early costs £25. On that measure the brand ranks 21 of 29 brands in the comparison, so the fee is worth setting against the headline price before you commit to a term.
Green Planet Energy eG
What does Green Planet Energy eG cost?+
The unit rate is €0.17 and the standing charge is €16.57, and those charges together make up a typical bill. The unit rate ranks 9 of 23 brands, so the price sits in the middle of the range rather than at either end.
Is there an exit fee if I want to leave?+
The exit fee is €0, which places Green Planet Energy eG at 1 of 29 brands. Nothing has to be paid to switch away, which matters for anyone who expects to move home, split with a partner or change supplier later.
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