Alcanzia vs Octopus Energy

Live Comparison • octobre 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), Octopus Energy is the cheaper option. Their Octopus Relax tariff results in an estimated monthly bill of €85.00 (including taxes). This compares to Alcanzia's best option (Alcanzia Tarifa Fija) at €90.95 per month.

Alcanzia Best Bill
€90.95
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

Neither provider currently offers a 24-hour flat rate.

Best Time-of-Use Rate

Octopus Energy has cheaper off-peak hours (0.119 €/kWh vs 0.126638 €/kWh).

Scorecard Comparison

Metric (1-10)AlcanziaOctopus Energy
Price Competitiveness
8
8
Solar Suitability
8
10
EV Suitability
7
10
Simplicity
9
9
Customer Service
7
9
Transparency
8
9

Full Head-to-Head Comparison

Alcanzia

Alcanzia

4.1 / 5 (500+ reviews)
Founded2013
Customers50,000+
Energy100% Renewable

Pros

  • Énergie 100% verte certifiée
  • Choix de tarifs fixes uniques ou heures creuses
  • Sans engagement (généralement)
  • Forte offre de batterie virtuelle solaire

Cons

  • Prix de puissance légèrement plus élevés que certaines marques discount
  • Interaction principalement numérique
  • Moins connue que les grands acteurs nationaux

Available Tariffs

Alcanzia Tarifa Fija

Est. Monthly Bill
€90.95
Energy (P1 / P2 / P3)
0.258796 / 0.172295 / 0.126638
€/kWh
Potencia (P1 / P2)0.101948 / 0.08553 €/kW
Solar ExportN/A
Fixed FeeNone
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
€98.81
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
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
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
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
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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