weSwitchSpain Logo
weSwitchSpain

Octopus Energy vs Niba

Live Comparison • septembre 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 EnergyNiba
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

Octopus Energy

4.8 / 5 (16,000+ reviews)
Founded2015
Customers500,000+
Energy100% Renewable

Pros

  • Meilleur choix pour les propriétaires de VE
  • Excellente rémunération solaire
  • Facturation simple et sans surprise
  • Application très bien notée
  • Support disponible en anglais

Cons

  • Les tarifs de puissance sont légèrement plus élevés que certains pairs
  • Ajustements de tarifs fréquents mais minimes

Available Tariffs

Octopus Solar

Est. Monthly Bill
€85.49
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
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
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
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
Energy (24h)0.133 €/kWh
Potencia (P1 / P2)0.093 / 0.093 €/kW
Solar Export0.01 €/kWh
Fixed FeeNone
Niba

Niba

4.1 / 5 (150+ reviews)
Founded2025
Customers10,000+
Energy100% Renewable

Pros

  • Soutenue par l'infrastructure et la stabilité du groupe Iberdrola
  • Tarif fixe plat très compétitif ({rate})
  • Sans engagement de durée
  • Certificat d'électricité 100% verte
  • Souscription et gestion 100% en ligne simples

Cons

  • Support client orienté principalement vers le numérique
  • Jeune marque avec moins d'ancienneté que les géants historiques

Available Tariffs

niba Solar

Est. Monthly Bill
€71.96
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
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
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
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

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