Iberdrola vs Som Energia

Live Comparison • oktober 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), Iberdrola is the cheaper option. Their Plan Online 3 Periodos tariff results in an estimated monthly bill of €75.49 (including taxes). This compares to Som Energia's best option (Som - Tarifa Periodos) at €80.72 per month.

Iberdrola Best Bill

€75.49

Som Energia Best Bill

€80.72

* 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

Iberdrola is the only provider offering a true 24-hour flat rate (0.1499 €/kWh).

Best Time-of-Use Rate

Iberdrola has cheaper off-peak hours (0.129 €/kWh vs 0.15 €/kWh).

Scorecard Comparison

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

Full Head-to-Head Comparison

Iberdrola

4.2 / 5 (14,000+ reviews)

Founded1992

Customers11,000,000+

EnergyMixed (Major Renewables Focus)

Pros

Enorme investeringen in duurzaamheid
Top-tier mobiele app
Sterke fysieke aanwezigheid
Uitstekende betrouwbaarheid

Cons

Standaardplannen kunnen duur zijn
Af en toe facturatiefouten gemeld
Grote bedrijfsstructuur

Available Tariffs

Plan Más Ahorro

Est. Monthly Bill

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.

€104.76

Energy (24h)0.1999 €/kWh

Potencia (P1 / P2)0.109562 / 0.086274 €/kW

Solar Export0.05 €/kWh

Fixed FeeNone

Plan Online

Est. Monthly Bill

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.

€85.87

Energy (24h)0.1499 €/kWh

Potencia (P1 / P2)0.119151 / 0.078055 €/kW

Solar ExportN/A

Fixed FeeNone

Plan Estable

Est. Monthly Bill

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.

€99.98

Energy (24h)0.187375 €/kWh

Potencia (P1 / P2)0.109562 / 0.086274 €/kW

Solar ExportN/A

Fixed FeeNone

Plan Online 3 Periodos

Est. Monthly Bill

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.

€75.49

Energy (P1 / P2 / P3)

0.217 / 0.162 / 0.129

€/kWh

Potencia (P1 / P2)0.091074 / 0.013483 €/kW

Solar ExportN/A

Fixed FeeNone

Som Energia

4.5 / 5 (Local / Coop reviews)

Founded2010

Customers85,000+ members

Energy100% Renewable (Cooperative)

Pros

100% Eigendom van de gemeenschap en non-profit
Totale transparantie in prijzen en beheer
Uitstekende democratische participatie
Investeert direct in nieuwe Spaanse duurzame installaties

Cons

Vereist een eenmalig lidmaatschapsaandeel van €100 (terugbetaalbaar)
Tarieven kunnen iets hoger zijn dan bij prijsvechters
Geen grote marketingbudgetten

Available Tariffs

Som - Tarifa Periodos

Est. Monthly Bill

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.

€80.72

Energy (P1 / P2 / P3)

0.249 / 0.169 / 0.15

€/kWh

Potencia (P1 / P2)0.082011 / 0.008096 €/kW

Solar Export0.03 €/kWh

Fixed FeeNone

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