Updated September 30, 2026 · TariffCue Editorial Team
Eni Plenitude vs Vattenfall
What sets them apart
| Compare |  Eni Plenitude | Vattenfall ReviewSee alternativesSee alternatives |
|---|---|---|
| Fixed terms | 24 | 12, 24Covers more |
| Unit rate | €0.172Lower | €0.329 |
| Standing charge | €144 | €10.90Lower |
| Customers | 11,000,000 | 12,000,000Higher |
| Exit fee | €0 | Not confirmed |
| Reference annual cost | Not confirmed | €953.30 |
| Renewable basis | Certificates | Not confirmed |
| Regions served | Italy | Not confirmed |
| Markets | IT, FR, ES, PT, GR, SI | Not confirmed |
Same on both: Renewable share (100%).
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Key differences
- Vattenfall scores higher overall: 9.4 vs 8.8.
- Unit rate is lower at Eni Plenitude: €0.172 vs €0.329.
- Standing charge is lower at Vattenfall: €10.90 vs €144.
- Customers is higher at Vattenfall: 12,000,000 vs 11,000,000.
- Support channels: only Eni Plenitude offers Chat, Help centre.
- Founded is lower at Vattenfall: 1909 vs 2022.
- Tariff types: only Vattenfall offers Green.
- Fixed terms: only Vattenfall offers 12.
Our verdict on each
Eni Plenitude
Eni Plenitude suits Italian households that want electricity and gas on a single fixed deal with an energy exit fee of €0. The tariff is listed at 100% renewable on a certificate basis, and the fibre broadband sold alongside gives a second reason to stay with one supplier.
Vattenfall
Vattenfall suits households that want renewable electricity without giving up choice, with a renewable share of 100% and fixed, green and variable tariffs. The headline reference annual cost of €953.30 ranks well, while the unit rate of €0.33 is the side to check first.
Score breakdown
| Area | Eni Plenitude | Vattenfall |
|---|---|---|
| Cost | 8.8Unit rate of €0.17 sits near the €0.17 market median, while the €144 standing charge sits well above it. | 9.0HigherReference annual cost of €953.30 ranks 2 of 4, though the unit rate of €0.33 sits low in the field. |
| Offer | 9.3Fixed and variable energy tariffs covering electricity and gas, plus fibre broadband entry €19.90 with 2,500 Mbps download. | 9.5HigherTariff types of fixed, green and variable and fixed terms of 12 and 24 months give a real choice, with green power at 100%. |
| Trust | 8.0Founded in 2022 as Eni Plenitude SpA Societa Benefit in IT, with support on phone, chat and help centre. | 9.9HigherThe legal entity Vattenfall AB was founded in 1909 and serves 12,000,000 customers, with support on phone. |
Where they rank in our lists
| Ranking | Eni Plenitude | Vattenfall |
|---|---|---|
| Energy suppliers | 5 of 96 | 25 of 96 |
| Green energy suppliers | 5 of 56 | 11 of 56 |
Every fact side by side
| Fact | Eni Plenitude | Vattenfall |
|---|---|---|
| Tariff types | Fixed, Variable | Fixed, Green, VariableCovers more |
| Fuels | Electricity, Gas | Electricity, Gas |
| Legal entity | Eni Plenitude SpA Societa Benefit | Vattenfall AB |
| Headquarters | Italy | Sweden |
| Founded | 2022 | 1909Lower |
| Support channels | Phone, Chat, Help centreCovers more | Phone |
Broadband
| Fact | Eni Plenitude | Vattenfall |
|---|---|---|
| Technology | Fttp, Fttc | Not confirmed |
| Top download speed (Mbps) | 2,500 | Not confirmed |
| Upload speed (Mbps) | 1,000 | Not confirmed |
| Price from | €19.90 | Not confirmed |
| Reference plan prices | Fibra existing energy customers: 19.90 EUR/month, 2500 Mbps, no term; Fibra plus Energy new customers: 19.90 EUR/month, 2500 Mbps, no term; Fibra only new customers: 25.90 EUR/month, 2500 Mbps, no term | Not confirmed |
| Contract length | 1 | Not confirmed |
| Setup fee | €39 | Not confirmed |
| Price after contract | €25.90 | Not confirmed |
| Exit fee terms | No penalties; 25.90 EUR deactivation fee within 24 months, 16.90 EUR with energy discount | Not confirmed |
| Router | Modem Wi-Fi 7 included | Not confirmed |
| Address checker | https://eniplenitude.com/offerta/casa/fibra-internet | Not confirmed |
Where each stands against the rest
| Fact | Eni Plenitude | Vattenfall | Median |
|---|---|---|---|
| Exit fee | €0at the median | Not confirmed | €0 |
| Unit rate | €0.172above the median | €0.329highest quarter | €0.17 |
| Standing charge | €144highest quarter | €10.90below the median | €14.99 |
| Renewable share | 100%at the median | 100%at the median | 100% |
| Customers | 11,000,000highest quarter | 12,000,000highest quarter | 850,000 |
Median across 58 listed providers.
Pros and cons
Eni Plenitude
Pros
- The €0 exit fee ranks 1 of 29 brands, the clearest advantage in the set here.
- Renewable share of 100% on a certificate basis, so the green claim names how it is certified.
- Electricity and gas on the same account, electricity and gas, with fixed terms of 24 months if you want rate certainty.
Cons
- The €144 standing charge is the weak point, ranking 16 of 16 and sitting above the €14.98 market median.
- The fibre line carries a €39 setup fee, where the median setup fee across the plans listed here is €0.
- Broadband-only new customers pay €25.90 rather than the €19.90 rate offered with an energy contract.
Vattenfall
Pros
- The reference annual cost of €953.30 puts Vattenfall 2 of 4 on the main cost measure in this comparison.
- A renewable share of 100% on the green tariff, for shoppers who want clean power as the default rather than an add-on.
- Tariff types of fixed, green and variable include a green option that Endesa's fixed, time of use and ev does not.
Cons
- The unit rate of €0.33 ranks 18 of 23, so heavy users gain less than the annual cost suggests.
- The standing charge of €10.90 ranks 6 of 16, so light users should not expect the whole bill to fall.
- Support runs on phone only, with no listed email or chat route for questions.
Who each suits
Eni Plenitude
Who it suits
- Italian households that want electricity and gas on a single fixed deal with a €0 exit fee.
- Existing energy customers adding fibre, who get the €19.90 entry rate rather than €25.90.
- People who want a support mix of phone, chat and help centre with a phone line in it.
Who should look elsewhere
- Buyers after hourly or dynamic pricing rather than a fixed rate: Powerpeers lists dynamic, fixed and variable.
- Shoppers set on prepay or a separate green choice: Electricity Ratings lists fixed, ev and time of use.
- Households looking for time-of-use or electric vehicle tariffs: Endesa lists fixed, time of use and ev.
Vattenfall
Who it suits
- Households that want renewable power as the standard option, given a renewable share of 100%.
- People who want electricity and gas from one supplier, since Vattenfall covers electricity and gas.
- Shoppers who put provider stability first, given that Vattenfall AB was founded in 1909 and serves 12,000,000 customers.
Who should look elsewhere
- Heavy users shopping purely on unit rate, since Vattenfall places 18 of 23 on that measure.
- Shoppers who want dynamic or hourly pricing, which Powerpeers lists in dynamic, fixed and variable and Vattenfall does not.
- Anyone after an electric vehicle tariff or a prepay meter, since those sit with Endesa at fixed, time of use and ev and ELECTRICITY RATINGS at fixed, ev and time of use.
Country by country
| Country | Eni Plenitude | Vattenfall |
|---|---|---|
| France | Yes | No |
| Greece | Yes | No |
| Italy | Yes | No |
| Portugal | Yes | No |
| Slovenia | Yes | No |
| Spain | Yes | No |
Questions about each
Eni Plenitude
Is there an exit fee on the energy contract?+
No penalty charge applies to the energy tariff, where the exit fee is €0. Broadband is treated separately: the fibre line carries a deactivation charge if you cancel within the initial period, and that charge is reduced when you hold an energy contract with the same supplier. Leaving the energy side is simple; leaving the fibre side is not free.
What do I actually pay on the energy side?+
The unit rate is €0.17 and the standing charge is €144, and the standing charge applies whatever the household uses. Low-usage homes feel that fixed part harder, so the same tariff can look different from home to home. Both fuels, electricity and gas, sit on the same contract.
Vattenfall
What does Vattenfall cost over a typical year?+
The reference annual cost is €953.30, which bundles usage and the standing charge into one figure. That helps for a quick comparison, but the bill is really a unit rate of €0.33 per unit of energy on top of a standing charge of €10.90. Read both before you switch.
Is the unit rate or the standing charge the bigger deal?+
For most households the unit rate decides the bill, and Vattenfall sits at 18 of 23 on that measure. The standing charge ranks 6 of 16, so the fixed part of the bill is stronger than the usage part. Light users will feel that gap less than heavy users.
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