Eres Energía vs Som Energia

Live Comparison • octubre 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), Eres Energía is the cheaper option. Their Eres Sobresaliente tariff results in an estimated monthly bill of €66.56 (including taxes). This compares to Som Energia's best option (Som - Tarifa Periodos) at €80.72 per month.

Eres Energía Best Bill
€66.56
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

Eres Energía is the only provider offering a true 24-hour flat rate (0.099 €/kWh).

Best Time-of-Use Rate

Eres Energía has cheaper off-peak hours (0.0996 €/kWh vs 0.15 €/kWh).

Scorecard Comparison

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

Full Head-to-Head Comparison

Eres Energía

Eres Energía

4.2 / 5 (300+ reviews)
Founded2018
Customers40,000+
Energy100% Renewable

Pros

  • Simple and transparent pricing
  • No permanence commitment
  • 100% renewable energy

Cons

  • Limited physical presence
  • Fewer tariff varieties than larger providers

Available Tariffs

Eres Tres

Est. Monthly Bill
€79.71
Energy (P1 / P2 / P3)
0.2295 / 0.1699 / 0.0996
€/kWh
Potencia (P1 / P2)0.0879 / 0.0739 €/kW
Solar ExportN/A
Fixed FeeNone

Eres Flexible

Est. Monthly Bill
€108.58
Energy (P1 / P2 / P3)
0.317 / 0.236 / 0.22
€/kWh
Potencia (P1 / P2)0.0819 / 0.02 €/kW
Solar ExportN/A
Fixed FeeNone

Eres Sobresaliente

Est. Monthly Bill
€66.56
Energy (24h)0.099 €/kWh
Potencia (P1 / P2)0.099 / 0.099 €/kW
Solar ExportN/A
Fixed FeeNone
Som Energia

Som Energia

4.5 / 5 (Local / Coop reviews)
Founded2010
Customers85,000+ members
Energy100% Renewable (Cooperative)

Pros

  • 100% Propiedad de los ciudadanos y sin ánimo de lucro
  • Transparencia total en precios y gestión
  • Excelente participación democrática
  • Invierte directamente en nuevas plantas renovables en España

Cons

  • Requiere una cuota inicial de socio de 100 € (reembolsable)
  • Las tarifas pueden ser ligeramente superiores a las ofertas más agresivas del mercado
  • Sin grandes presupuestos de marketing ni ofertas complejas

Available Tariffs

Som - Tarifa Periodos

Est. Monthly Bill
€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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