Endesa vs Octopus Energy
Live Comparison • septiembre 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), Endesa is the cheaper option. Their Endesa ATR Fija Premium tariff results in an estimated monthly bill of €67.11 (including taxes). This compares to Octopus Energy's best option (Octopus 3) at €76.33 per month.
Endesa Best Bill
€67.11
Octopus Energy Best Bill
€76.33
* 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
Endesa wins here. Their flat rate is 0.104328 €/kWh compared to Octopus Energy's 0.133 €/kWh.
Best Time-of-Use Rate
Endesa has cheaper off-peak hours (0.09441 €/kWh vs 0.104 €/kWh).
Scorecard Comparison
| Metric (1-10) | Endesa | Octopus Energy |
|---|---|---|
| Price Competitiveness | 6 | 8 |
| Solar Suitability | 6 | 10 |
| EV Suitability | 6 | 10 |
| Simplicity | 5 | 9 |
| Customer Service | 4 | 9 |
| Transparency | 5 | 9 |
Full Head-to-Head Comparison
Endesa
3.9 / 5 (12,000+ reviews)
Founded1944
Customers10,000,000+
EnergyMixed (Renewables + Nuclear + Gas)
Pros
- Oficinas físicas en toda España
- Empresa muy estable
- Tarifas digitales muy competitivas
- Amplia gama de servicios para el hogar
Cons
- El servicio al cliente puede ser lento
- Estructura de facturación compleja
- Prácticas de marketing agresivas
Available Tariffs
One Luz
Est. Monthly Bill€75.19
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)0.124571 €/kWh
Potencia (P1 / P2)0.094967 / 0.094967 €/kW
Solar ExportN/A
Fixed FeeNone
Endesa Solar Plus Virtual Battery
Est. Monthly Bill€88.31
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 (24h)0.1599 €/kWh
Potencia (P1 / P2)0.093666 / 0.093666 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone
Endesa ATR Fija 24
Est. Monthly Bill€71.36
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)0.115477 €/kWh
Potencia (P1 / P2)0.093666 / 0.093666 €/kW
Solar ExportN/A
Fixed FeeNone
One Luz 3 Periodos
Est. Monthly Bill€73.01
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)
0.18621 / 0.11781 / 0.09441
€/kWh
Potencia (P1 / P2)0.093665 / 0.093665 €/kW
Solar ExportN/A
Fixed FeeNone
Conecta Luz
Est. Monthly Bill€69.25
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)0.109 €/kWh
Potencia (P1 / P2)0.094967 / 0.094967 €/kW
Solar ExportN/A
Fixed FeeNone
Endesa ATR Fija Premium
Est. Monthly Bill€67.11
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)0.104328 €/kWh
Potencia (P1 / P2)0.093666 / 0.093666 €/kW
Solar ExportN/A
Fixed FeeNone
Octopus Energy
4.8 / 5 (16,000+ reviews)
Founded2015
Customers500,000+
Energy100% Renewable
Pros
- La mejor opción para propietarios de VE
- Excelente compensación solar
- Facturación clara y sin rodeos
- App muy bien valorada
- Atención al cliente de calidad
Cons
- Los precios de potencia son algo más altos que algunos competidores
- Ajustes de tarifas frecuentes pero pequeños
Available Tariffs
Octopus Solar
Est. Monthly Bill€85.49
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)
0.243 / 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
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)
0.174 / 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
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)
0.294 / 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
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)
0.246 / 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
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)0.133 €/kWh
Potencia (P1 / P2)0.093 / 0.093 €/kW
Solar Export0.01 €/kWh
Fixed FeeNone
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