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Octopus Energy vs Plenitude

Live Comparison • juli 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 Fácil Luz tariff results in an estimated monthly bill of 66.18 (including taxes). This compares to Octopus Energy's best option (Octopus Relax) at €66.41 per month.

Octopus Energy Best Bill
66.41
Plenitude Best Bill
66.18

* 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 wins here. Their flat rate is 0.097296 €/kWh compared to Octopus Energy's 0.103 €/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 EnergyPlenitude
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

Octopus Energy

4.8 / 5 (16,000+ reviews)
Founded2015
Customers500,000+
Energy100% Renewable

Pros

  • Bästa valet för elbilister
  • Utmärkt solersättning
  • Enkel fakturering utan krångel
  • Högt rankad app

Cons

  • Potencia-avgifterna är något högre än vissa konkurrenter
  • Frekventa men små prisjusteringar

Available Tariffs

Octopus Solar

Est. Monthly Bill
74.31
Energy (P1 / P2 / P3)
0.209 / 0.118 / 0.093
€/kWh
Potencia (P1 / P2)0.093 / 0.093 €/kW
Solar Export0.035 €/kWh
Fixed FeeNone

Octopus 3

Est. Monthly Bill
67.44
Energy (P1 / P2 / P3)
0.184 / 0.098 / 0.079
€/kWh
Potencia (P1 / P2)0.093 / 0.093 €/kW
Solar ExportN/A
Fixed FeeNone

Octopus Go

Est. Monthly Bill
87.03
Energy (P1 / P2 / P3)
0.248 / 0.248 / 0.104
€/kWh
Potencia (P1 / P2)0.11 / 0.024 €/kW
Solar ExportN/A
Fixed FeeNone

Octopus Flexi

Est. Monthly Bill
73.43
Energy (P1 / P2 / P3)
0.224 / 0.16 / 0.136
€/kWh
Potencia (P1 / P2)0.076 / 0.002 €/kW
Solar ExportN/A
Fixed FeeNone

Octopus Relax

Est. Monthly Bill
66.41
Energy (24h)0.103 €/kWh
Potencia (P1 / P2)0.093 / 0.093 €/kW
Solar Export0.01 €/kWh
Fixed FeeNone
Plenitude

Plenitude

4.6 / 5 (2,500+ reviews)
Founded2021
Customers300,000+
Energy100% Renewable

Pros

  • 100% certifierad grön energi
  • Enkla och stabila fastpristariffer
  • Stark finansiell ryggrad via Eni
  • Utan bindningstid eller exitavgifter

Cons

  • Traditionell kundservicemodell
  • Priserna kan vara högre än hos lågprisaktörer
  • Fokus ligger tungt på fastpris

Available Tariffs

Fácil Luz

Est. Monthly Bill
66.18
Energy (24h)0.097296 €/kWh
Potencia (P1 / P2)0.099984 / 0.099984 €/kW
Solar ExportN/A
Fixed FeeNone

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