Octopus Energy vs Energía XXI
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
Not enough tariff data available to calculate a typical monthly bill comparison.
Best Flat Rate
Octopus Energy is the only provider offering a true 24-hour flat rate (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 | Energía XXI |
|---|---|---|
| Price Competitiveness | 8 | 5 |
| Solar Suitability | 10 | 3 |
| EV Suitability | 10 | 3 |
| Simplicity | 9 | 2 |
| Customer Service | 9 | 4 |
| Transparency | 9 | 2 |
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€74.31
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.
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
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.
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
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.
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
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.
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
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.
Energy (24h)0.103 €/kWh
Potencia (P1 / P2)0.093 / 0.093 €/kW
Solar Export0.01 €/kWh
Fixed FeeNone
Energía XXI
1.2 / 5 (3,000+ reviews)
Founded2019
Customers3,000,000+
EnergyMixed (Regulated Market)
Pros
- Toegang tot de Bono Social (overheidskortingen)
- Officiële gereguleerde prijzen (PVPC)
- Stabiliteit van een grote groep
Cons
- Slechte facturatietransparantie
- Verborgen eenheidsprijzen
- Geen zekerheid van vaste prijzen (prijzen wijzigen per uur)
- Lage scores voor klanttevredenheid
Available Tariffs
No active tariffs found.
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