Updated September 30, 2026 · TariffCue Editorial Team
Endesa vs Eon Next
What sets them apart
| Compare |  Endesa |  Eon Next |
|---|---|---|
| Fixed terms | 12, 36, 60 | 12, 24 |
| Exit fee | €0 | £25 |
| Unit rate | €0.12 | £0.324 |
| Export rate | €0.060 | £0.15 |
| Customers | 12,700,000Higher | 5,000,000 |
| Markets | ES, PT | GB |
| Standing charge | €2.85 | Not confirmed |
| Reference annual cost | Not confirmed | £166 |
| Renewable share | Not confirmed | 27.3% |
| EV off-peak rate | Not confirmed | £0.085 |
| Smart meter required | Not confirmed | Yes |
| Regions served | Spain, Canarias, Baleares | Not confirmed |
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings.
Key differences
- Endesa scores higher overall: 9.5 vs 9.1.
- Customers is higher at Endesa: 12,700,000 vs 5,000,000.
- Support channels: only Endesa offers Chat.
- Support channels: only Eon Next offers Community.
- Endesa is available in 1 more country.
- Tariff types: only Endesa offers Time of use.
- Tariff types: only Eon Next offers Variable, Tracker, Dynamic.
- Fixed terms: only Endesa offers 36, 60.
- Fixed terms: only Eon Next offers 24.
- Markets: only Endesa offers ES, PT.
Our verdict on each
Endesa
Endesa suits Spanish households that want a fixed term they can leave early at no cost, with electricity and gas on a single account across Spain, Canarias and Baleares. It serves 12,700,000 customers, handles support on email, chat and phone and charges an exit fee of €0.
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.
Score breakdown
| Area | Endesa | Eon Next |
|---|---|---|
| Cost | 9.5HigherUnit rate of €0.12 and standing charge of €2.85 keep costs competitive, with an exit fee of €0. | 8.8Reference annual cost of £166 ranks 1 of 4; unit rate £0.32 sits at 20 of 23. |
| Offer | 9.4HigherElectricity and gas under electricity and gas, plus a tethered charger at €1,099 with installation included. | 9.3Tariff types cover variable, fixed and tracker, plus an export rate of £0.15 and a required smart meter. |
| Trust | 9.8Trading since 1944 with support on email, chat and phone and a trust score of 9.8. | Not confirmed |
How they place
| Ranking | Endesa | Eon Next |
|---|---|---|
| Energy suppliers | 23 of 96 | 29 of 96 |
| Smart and dynamic electricity tariffs | 7 of 43 | 11 of 43 |
Licences and countries
| Country | Endesa | Eon Next |
|---|---|---|
| Headquarters | Spain | United Kingdom |
Additional countries for Endesa: 2. Additional countries for Eon Next: 1.
What we checked
Endesa
- endesa.com: 14 facts, checked September 30, 2026
Eon Next
- eonnext.com: 15 facts, checked September 30, 2026
Every fact side by side
| Fact | Endesa | Eon Next |
|---|---|---|
| Tariff types | Fixed, Time of use, Ev | Variable, Fixed, Tracker, Ev, Dynamic |
| Fuels | Electricity, Gas | Electricity, Gas |
| Legal entity | ENDESA ENERGIA S.A.U. | E.ON Next Energy Limited |
| Headquarters | Spain | United Kingdom |
| Founded | 1944 | Not confirmed |
| Support channels | Email, Chat, Phone, Help centre | Email, Phone, Help centre, Community |
EV charging
| Fact | Endesa | Eon Next |
|---|---|---|
| Charger price | €1,099 | Not confirmed |
| Installation included | Yes | Not confirmed |
| Charging power (kW) | 7.4 to 22 | Not confirmed |
| Tethered cable | Yes | Not confirmed |
| Tariff integration | Tarifa Recarga en Casa | Not confirmed |
| Mobile app | Yes | Not confirmed |
| Warranty | 3 years | Not confirmed |
Where each stands against the rest
| Fact | Endesa | Eon Next | Median |
|---|---|---|---|
| Standing charge | €2.85lowest quarter | Not confirmed | €14.99 |
| Renewable share | Not confirmed | 27.3%lowest quarter | 100% |
| EV off-peak rate | Not confirmed | £0.085highest quarter | £0.080 |
| Customers | 12,700,000highest quarter | 5,000,000highest quarter | 850,000 |
Median across 58 listed providers.
Pros and cons
Endesa
Pros
- Exit fee of €0 means a fixed term can be ended early without a charge, which is unusual in this group.
- Unit rate of €0.12 and standing charge of €2.85 sit at the competitive end of the suppliers listed here.
- A tethered home charger costs €1,099 with installation included, gives power of 7.4 to 22 kW and carries a warranty of 3 years.
Cons
- Tariff choice is narrower than some rivals: fixed, time of use and ev covers fixed, time-of-use and EV, while Powerpeers lists dynamic, fixed and variable.
- A green tariff does not appear in fixed, time of use and ev, though Electricity Ratings includes fixed, ev and time of use.
- Coverage is limited to Spain, Canarias and Baleares, so households in other markets need a different supplier.
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.
Who each suits
Endesa
Who it suits
- Households in Spain, Canarias or Baleares that want electricity and gas from one supplier with an exit fee of €0.
- EV owners who want a tethered charger fitted at home and linked to the electricity tariff.
- Customers who expect phone help, since email, chat and phone includes phone and chat alongside email.
Who should look elsewhere
- Powerpeers readers who want a dynamic or variable tariff, since dynamic, fixed and variable lists both and fixed, time of use and ev does not.
- Anyone set on a green tariff, which Electricity Ratings offers in fixed, ev and time of use but Endesa does not list.
- Households outside Spain, Canarias and Baleares, and readers who prefer the fixed-only setup of Base Power Company in fixed.
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.
Country by country
| Country | Endesa | Eon Next |
|---|---|---|
| Portugal | Yes | No |
| Spain | Yes | No |
| United Kingdom | No | Yes |
Questions about each
Endesa
Does it cost anything to leave an Endesa contract early?+
The exit fee listed for the Conecta de Endesa plan is €0, so ending a fixed term early carries no charge. That stands out among the suppliers in this comparison, several of which price a fee for switching. It makes Endesa easier to move away from if wholesale prices move against you later.
What does a unit of electricity cost from Endesa?+
The unit rate on Conecta de Endesa is €0.12, with a standing charge of €2.85 added to the bill. In this comparison the unit rate ranks 6 of 23 and the standing charge 3 of 16, putting both figures near the competitive end of the group.
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.
Other options to compare
Other matchups
- Endesa vs Enel
- Endesa vs Engie 2026
- Endesa vs DRBO Greenenergy
- Endesa vs Green Planet Energy eG
- Endesa vs Base Power Company
- Endesa vs Rabot Energy
- Endesa vs 100Green
- Endesa vs niba
- Endesa vs Stadtwerke Münster
- Endesa vs Octopus Energy
- Eon Next vs Budget Thuis Internet
- Eon Next vs Budget Energie
- Endesa vs Energie
- Endesa vs Eni Plenitude
- Eon Next vs ENTEGA