Octopus Energy vs Plenitude

Live Comparison • oktober 2026

A detailed head-to-head comparison covering rates, typical bills, pros & cons, and features to help you decide which is better for your home.

Our Verdict

Overall Winner: Lowest Typical Bill

For a typical Spanish household (3.6kW Potencia, 300kWh monthly usage), Plenitude is the cheaper option. Their Plenitude Fácil Plus Luz (> 5 kW) tariff results in an estimated monthly bill of €75.47 (including taxes). This compares to Octopus Energy's best option (Octopus Relax) at €85.00 per month.

Octopus Energy Best Bill

€85.00

Plenitude Best Bill

€75.47

* Assumption: 3.6 kW contracted power, 300 kWh monthly usage (20% peak, 30% flat, 50% off-peak), including 21% IVA, 5.11% Electricity Tax, and ~€1 meter rental.

Best Flat Rate

Plenitude is the only provider offering a true 24-hour flat rate (0.112497 €/kWh).

Best Time-of-Use Rate

Octopus Energy is the only provider offering a fixed 3-period time-of-use rate.

Scorecard Comparison

Metric (1-10)	Octopus Energy	Plenitude
Price Competitiveness	8	8
Solar Suitability	10	7
EV Suitability	10	6
Simplicity	9	8
Customer Service	9	7
Transparency	9	8

Full Head-to-Head Comparison

Octopus Energy

4.8 / 5 (16,000+ reviews)

Founded2015

Customers500,000+

Energy100% Renewable

Pros

Beste valg for elbileiere
Utmerket solenergikompensasjon
Enkel og grei fakturering
Høyt rangert app

Cons

Potencia-priser er noe høyere enn hos enkelte konkurrenter
Hyppige, men små prisjusteringer

Available Tariffs

Octopus Solar

Est. Monthly Bill

Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.

€98.81

Energy (P1 / P2 / P3)

0.233 / 0.177 / 0.137

€/kWh

Potencia (P1 / P2)0.12 / 0.12 €/kW

Solar Export0.035 €/kWh

Fixed FeeNone

Octopus 3

Est. Monthly Bill

Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.

€88.70

Energy (P1 / P2 / P3)

0.185 / 0.134 / 0.129

€/kWh

Potencia (P1 / P2)0.12 / 0.12 €/kW

Solar ExportN/A

Fixed FeeNone

Octopus Go

Est. Monthly Bill

Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.

€129.34

Energy (P1 / P2 / P3)

0.392 / 0.392 / 0.119

€/kWh

Potencia (P1 / P2)0.12 / 0.1 €/kW

Solar ExportN/A

Fixed FeeNone

Octopus Flexi

Est. Monthly Bill

Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.

€105.25

Energy (P1 / P2 / P3)

0.317 / 0.236 / 0.22

€/kWh

Potencia (P1 / P2)0.076 / 0.002 €/kW

Solar Export0.035 €/kWh

Fixed FeeNone

Octopus Relax

Est. Monthly Bill

Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.

€85.00

Energy (P1 / P2 / P3)

0.144 / 0.129 / 0.129

€/kWh

Potencia (P1 / P2)0.12 / 0.12 €/kW

Solar Export0.01 €/kWh

Fixed FeeNone

Plenitude

4.6 / 5 (2,500+ reviews)

Founded2021

Customers300,000+

Energy100% Renewable

Pros

100 % sertifisert grønn energi
Enkle og stabile fastpristariffer
Sterk finansiell ryggrad via Eni
Uten bindingstid eller exit-gebyrer

Cons

Tradisjonell kundeservicemodell
Prisene kan være høyere enn hos lavprisaktører
Fokus er tungt på fastpris

Available Tariffs

Plenitude Tendencia

Est. Monthly Bill

Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.

€105.25

Energy (P1 / P2 / P3)

0.317 / 0.236 / 0.22

€/kWh

Potencia (P1 / P2)0.076 / 0.002 €/kW

Solar ExportN/A

Fixed FeeNone

Plenitude Fácil Plus Luz (≤ 5 kW)

Est. Monthly Bill

Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.

€78.33

Energy (24h)0.11999 €/kWh

Potencia (P1 / P2)0.112498 / 0.112498 €/kW

Solar ExportN/A

Fixed FeeNone

Plenitude Fácil Plus Luz (> 5 kW)

Est. Monthly Bill

Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.

€75.47

Energy (24h)0.112497 €/kWh

Potencia (P1 / P2)0.112498 / 0.112498 €/kW

Solar ExportN/A

Fixed FeeNone

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