weSwitchSpain Logo
weSwitchSpain

Octopus Energy vs Repsol

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), Repsol is the cheaper option. Their Repsol Tarifa Discriminación Horaria tariff results in an estimated monthly bill of €70.73 (including taxes). This compares to Octopus Energy's best option (Octopus 3) at €76.33 per month.

Octopus Energy Best Bill
€76.33
Repsol Best Bill
€70.73

* 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

Repsol wins here. Their flat rate is 0.1199 €/kWh compared to Octopus Energy's 0.133 €/kWh.

Best Time-of-Use Rate

Repsol has cheaper off-peak hours (0.0969 €/kWh vs 0.104 €/kWh).

Scorecard Comparison

Metric (1-10)Octopus EnergyRepsol
Price Competitiveness
8
7
Solar Suitability
10
6
EV Suitability
10
6
Simplicity
9
6
Customer Service
9
5
Transparency
9
6

Full Head-to-Head Comparison

Octopus Energy

Octopus Energy

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

Pros

  • Best choice for EV owners
  • Excellent solar compensation
  • Simple, no-BS billing
  • Highly rated app

Cons

  • Potencia rates are slightly higher than some peers
  • Frequent but small rate adjustments

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
Repsol

Repsol

3.5 / 5 (4,500+ reviews)
Founded1987
Customers1,500,000+
EnergyMixed (Oil & Gas Heritage)

Pros

  • Excellent fuel discounts via Waylet
  • Stable fixed prices
  • Convenient multi-service bundling
  • Strong brand trust

Cons

  • Energy rates alone aren't always the cheapest
  • App focused heavily on fuel stations
  • Recent service complaints

Available Tariffs

Tarifa Solar Con Bateria Virtual

Est. Monthly Bill
€75.88
Energy (24h)0.1299 €/kWh
Potencia (P1 / P2)0.090137 / 0.090137 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone

Repsol Tarifa Tranquilísima Fixed 5yr

Est. Monthly Bill
€77.41
Energy (24h)0.1399 €/kWh
Potencia (P1 / P2)0.081918 / 0.081918 €/kW
Solar ExportN/A
Fixed FeeNone

Repsol Tarifa Discriminación Horaria

Est. Monthly Bill
€70.73
Energy (P1 / P2 / P3)
0.1659 / 0.1159 / 0.0969
€/kWh
Potencia (P1 / P2)0.120274 / 0.06 €/kW
Solar ExportN/A
Fixed FeeNone

Repsol Ahorro Plus

Est. Monthly Bill
€72.07
Energy (24h)0.1199 €/kWh
Potencia (P1 / P2)0.090137 / 0.090137 €/kW
Solar ExportN/A
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