Niba vs Octopus Energy
Live Comparison • octubre 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), Niba is the cheaper option. Their niba Zen tariff results in an estimated monthly bill of €73.49 (including taxes). This compares to Octopus Energy's best option (Octopus Relax) at €85.00 per month.
Niba Best Bill
€73.49
Octopus Energy Best Bill
€85.00
* 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
Niba is the only provider offering a true 24-hour flat rate (0.123 €/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) | Niba | Octopus Energy |
|---|---|---|
| Price Competitiveness | 9 | 8 |
| Solar Suitability | 8 | 10 |
| EV Suitability | 7 | 10 |
| Simplicity | 9 | 9 |
| Customer Service | 8 | 9 |
| Transparency | 9 | 9 |
Full Head-to-Head Comparison
Niba
4.1 / 5 (150+ reviews)
Founded2025
Customers10,000+
Energy100% Renewable
Pros
- Respaldada por la infraestructura y estabilidad del grupo Iberdrola
- Tarifa fija plana extremadamente competitiva ({rate})
- Sin compromisos de permanencia
- Energía 100% verde certificada
- Contratación y gestión 100% online sencillas
Cons
- Atención al cliente orientada principalmente al canal digital
- Marca joven con menor trayectoria que las comercializadoras tradicionales
Available Tariffs
niba Zen
Est. Monthly Bill€73.49
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 (24h)0.123 €/kWh
Potencia (P1 / P2)0.091 / 0.091 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone
niba Flex
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 Export0.06 €/kWh
Fixed FeeNone
niba Solar
Est. Monthly Bill€73.49
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 (24h)0.123 €/kWh
Potencia (P1 / P2)0.091 / 0.091 €/kW
Solar Export0.06 €/kWh
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€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
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