Octopus Energy vs Niba
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), Niba is the cheaper option. Their niba Tres tariff results in an estimated monthly bill of €68.67 (including taxes). This compares to Octopus Energy's best option (Octopus 3) at €76.33 per month.
Octopus Energy Best Bill
€76.33
Niba Best Bill
€68.67
* 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 wins here. Their flat rate is 0.119 €/kWh compared to Octopus Energy's 0.133 €/kWh.
Best Time-of-Use Rate
Niba has cheaper off-peak hours (0.083 €/kWh vs 0.104 €/kWh).
Scorecard Comparison
| Metric (1-10) | Octopus Energy | Niba |
|---|---|---|
| Price Competitiveness | 8 | 9 |
| Solar Suitability | 10 | 8 |
| EV Suitability | 10 | 7 |
| Simplicity | 9 | 9 |
| Customer Service | 9 | 8 |
| Transparency | 9 | 9 |
Full Head-to-Head Comparison
Octopus Energy
4.8 / 5 (16,000+ reviews)
Founded2015
Customers500,000+
Energy100% Renewable
Pros
- Bästa valet för elbilister
- Utmärkt solersättning
- Enkel fakturering utan krångel
- Högt rankad app
Cons
- Potencia-avgifterna är något högre än vissa konkurrenter
- Frekventa men små prisjusteringar
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
Niba
4.1 / 5 (150+ reviews)
Founded2025
Customers10,000+
Energy100% Renewable
Pros
- Med stöd av Iberdrolas infrastruktur och stabilitet
- Mycket konkurrenskraftigt fast pris ({rate})
- Ingen bindningtid
- 100 % grön el-certifikat
- Enkel digital registrering och hantering
Cons
- Kundtjänst är främst digital
- Kortare historik än de stora traditionella elbolagen
Available Tariffs
niba Solar
Est. Monthly Bill€71.96
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)0.119 €/kWh
Potencia (P1 / P2)0.091 / 0.091 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone
niba Zen
Est. Monthly Bill€71.96
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)0.119 €/kWh
Potencia (P1 / P2)0.091 / 0.091 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone
niba Tres
Est. Monthly Bill€68.67
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)
0.193 / 0.135 / 0.083
€/kWh
Potencia (P1 / P2)0.077 / 0.077 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone
niba Flex
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 Export0.06 €/kWh
Fixed FeeNone
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