Octopus Energy vs Imagina Energía

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), Imagina Energía is the cheaper option. Their Sin Horas tariff results in an estimated monthly bill of €66.28 (including taxes). This compares to Octopus Energy's best option (Octopus Relax) at €66.41 per month.

Octopus Energy Best Bill

€66.41

Imagina Energía Best Bill

€66.28

* 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

Imagina Energía wins here. Their flat rate is 0.099 €/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 Energy	Imagina Energía
Price Competitiveness	8	8
Solar Suitability	10	9
EV Suitability	10	6
Simplicity	9	8
Customer Service	9	9
Transparency	9	9

Full Head-to-Head Comparison

Octopus Energy

4.8 / 5 (16,000+ reviews)

Founded2015

Customers500,000+

Energy100% Renewable

Pros

Uitstekende zonnevergoeding
Beste keuze voor EV-eigenaren
Eenvoudige facturatie
Hoog gewaardeerde app
Engelstalige ondersteuning

Cons

Potencia-tarieven zijn iets hoger dan bij sommige concurrenten
Regelmatige maar kleine tariefaanpassingen

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 standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.

€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

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

€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

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

€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

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

€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

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

€66.41

Energy (24h)0.103 €/kWh

Potencia (P1 / P2)0.093 / 0.093 €/kW

Solar Export0.01 €/kWh

Fixed FeeNone

Imagina Energía

4.8 / 5 (700+ reviews)

Founded2020

Customers50,000+

Energy100% Solar Energy

Pros

100% Gecertificeerde zonne-energie
3-jarige prijsgarantie
Uitstekende persoonlijke klantenondersteuning
Sterke functies voor eigen zonne-verbruik

Cons

Focus ligt primair op vaste tarieven
Nieuwer merk vergeleken met de 'Grote Drie'
Online-eerst beheermodel

Available Tariffs

Sin Horas

Est. Monthly Bill

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

€66.28

Energy (24h)0.099 €/kWh

Potencia (P1 / P2)0.098 / 0.098 €/kW

Solar Export0.04 €/kWh

Fixed FeeNone

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