weSwitchSpain Logo
weSwitchSpain

Octopus Energy vs Factor Energía

Live Comparison • september 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), Octopus Energy is the cheaper option. Their Octopus 3 tariff results in an estimated monthly bill of 76.33 (including taxes). This compares to Factor Energía's best option (Factor Tarifa Respira) at €86.97 per month.

Octopus Energy Best Bill
76.33
Factor Energía Best Bill
86.97

* 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

Octopus Energy wins here. Their flat rate is 0.133 €/kWh compared to Factor Energía's 0.1596 €/kWh.

Best Time-of-Use Rate

Octopus Energy has cheaper off-peak hours (0.104 €/kWh vs 0.151 €/kWh).

Scorecard Comparison

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

Full Head-to-Head Comparison

Octopus Energy

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
85.49
Energy (P1 / P2 / P3)
0.243 / 0.148 / 0.12
€/kWh
Potencia (P1 / P2)0.093 / 0.093 €/kW
Solar Export0.035 €/kWh
Fixed FeeNone

Octopus 3

Est. Monthly Bill
76.33
Energy (P1 / P2 / P3)
0.174 / 0.124 / 0.114
€/kWh
Potencia (P1 / P2)0.093 / 0.093 €/kW
Solar ExportN/A
Fixed FeeNone

Octopus Go

Est. Monthly Bill
100.82
Energy (P1 / P2 / P3)
0.294 / 0.294 / 0.104
€/kWh
Potencia (P1 / P2)0.11 / 0.06 €/kW
Solar ExportN/A
Fixed FeeNone

Octopus Flexi

Est. Monthly Bill
86.82
Energy (P1 / P2 / P3)
0.246 / 0.179 / 0.186
€/kWh
Potencia (P1 / P2)0.076 / 0.002 €/kW
Solar Export0.035 €/kWh
Fixed FeeNone

Octopus Relax

Est. Monthly Bill
77.86
Energy (24h)0.133 €/kWh
Potencia (P1 / P2)0.093 / 0.093 €/kW
Solar Export0.01 €/kWh
Fixed FeeNone
Factor Energía

Factor Energía

4 / 5 (4,000+ reviews)
Founded1999
Customers300,000+
Energy100% Renewable

Pros

  • Eerste onafhankelijke leverancier in Spanje
  • 100% Gecertificeerde groene energie
  • Uitstekende app voor verbruikstracking
  • Zeer transparante facturatiestructuur

Cons

  • Wachttijden bij klantenservice tijdens pieken
  • Vaste tarieven kunnen iets hoger zijn dan markt-tarieven
  • Focus ligt primair op het Spaanse vasteland

Available Tariffs

Factor Tarifa Respira

Est. Monthly Bill
86.97
Energy (P1 / P2 / P3)
0.2765 / 0.2184 / 0.151
€/kWh
Potencia (P1 / P2)0.075903 / 0.001987 €/kW
Solar ExportN/A
Fixed FeeNone

Tarifa Fija Precio Único

Est. Monthly Bill
97.34
Energy (24h)0.1596 €/kWh
Potencia (P1 / P2)0.1265 / 0.1265 €/kW
Solar ExportN/A
Fixed FeeNone

Find the absolute best supplier for your home

Don't rely on typical profiles. Upload your real bill and our AI will calculate exactly which supplier is cheaper for your actual energy usage.

Analyze My Bill Now