Octopus Energy vs Iberdrola
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), Iberdrola is the cheaper option. Their Plan Online 3 Periodos tariff results in an estimated monthly bill of €75.49 (including taxes). This compares to Octopus Energy's best option (Octopus Relax) at €85.00 per month.
Octopus Energy Best Bill
€85.00
Iberdrola Best Bill
€75.49
* 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
Iberdrola is the only provider offering a true 24-hour flat rate (0.1499 €/kWh).
Best Time-of-Use Rate
Octopus Energy has cheaper off-peak hours (0.119 €/kWh vs 0.129 €/kWh).
Scorecard Comparison
| Metric (1-10) | Octopus Energy | Iberdrola |
|---|---|---|
| Price Competitiveness | 8 | 6 |
| Solar Suitability | 10 | 7 |
| EV Suitability | 10 | 7 |
| Simplicity | 9 | 5 |
| Customer Service | 9 | 5 |
| Transparency | 9 | 5 |
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€98.81
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.
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€88.70
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.
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€129.34
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.
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€105.25
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.
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€85.00
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.
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
Iberdrola
4.2 / 5 (14,000+ reviews)
Founded1992
Customers11,000,000+
EnergyMixed (Major Renewables Focus)
Pros
- Enorme investeringen in duurzaamheid
- Top-tier mobiele app
- Sterke fysieke aanwezigheid
- Uitstekende betrouwbaarheid
Cons
- Standaardplannen kunnen duur zijn
- Af en toe facturatiefouten gemeld
- Grote bedrijfsstructuur
Available Tariffs
Plan Más Ahorro
Est. Monthly Bill€104.76
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.
Energy (24h)0.1999 €/kWh
Potencia (P1 / P2)0.109562 / 0.086274 €/kW
Solar Export0.05 €/kWh
Fixed FeeNone
Plan Online
Est. Monthly Bill€85.87
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.
Energy (24h)0.1499 €/kWh
Potencia (P1 / P2)0.119151 / 0.078055 €/kW
Solar ExportN/A
Fixed FeeNone
Plan Estable
Est. Monthly Bill€99.98
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.
Energy (24h)0.187375 €/kWh
Potencia (P1 / P2)0.109562 / 0.086274 €/kW
Solar ExportN/A
Fixed FeeNone
Plan Online 3 Periodos
Est. Monthly Bill€75.49
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.
Energy (P1 / P2 / P3)
0.217 / 0.162 / 0.129
€/kWh
Potencia (P1 / P2)0.091074 / 0.013483 €/kW
Solar ExportN/A
Fixed FeeNone
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