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Iberdrola vs Alcanzia

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), Iberdrola is the cheaper option. Their Plan Online 3 Periodos tariff results in an estimated monthly bill of 65.22 (including taxes). This compares to Alcanzia's best option (Alcanzia Tarifa Fija) at €72.73 per month.

Iberdrola Best Bill
65.22
Alcanzia Best Bill
72.73

* 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

Iberdrola is the only provider offering a true 24-hour flat rate (0.1249 €/kWh).

Best Time-of-Use Rate

Alcanzia has cheaper off-peak hours (0.083217 €/kWh vs 0.09999 €/kWh).

Scorecard Comparison

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

Full Head-to-Head Comparison

Iberdrola

Iberdrola

4.2 / 5 (14,000+ reviews)
Founded1992
Customers11,000,000+
EnergyMixed (Major Renewables Focus)

Pros

  • Massive investment in renewables
  • Top-tier mobile app
  • Strong physical presence
  • Excellent reliability

Cons

  • Standard plans can be expensive
  • Occasional billing errors reported
  • Large corporate structure

Available Tariffs

Plan Más Ahorro

Est. Monthly Bill
88.16
Energy (24h)0.16191 €/kWh
Potencia (P1 / P2)0.109562 / 0.071205 €/kW
Solar Export0.05 €/kWh
Fixed FeeNone

Plan Online

Est. Monthly Bill
75.19
Energy (24h)0.1249 €/kWh
Potencia (P1 / P2)0.119151 / 0.069836 €/kW
Solar ExportN/A
Fixed FeeNone

Plan Estable

Est. Monthly Bill
83.10
Energy (24h)0.148644 €/kWh
Potencia (P1 / P2)0.109562 / 0.071205 €/kW
Solar ExportN/A
Fixed FeeNone

Plan Online 3 Periodos

Est. Monthly Bill
65.22
Energy (P1 / P2 / P3)
0.194 / 0.136 / 0.09999
€/kWh
Potencia (P1 / P2)0.091074 / 0.013483 €/kW
Solar ExportN/A
Fixed FeeNone
Alcanzia

Alcanzia

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

Pros

  • 100% Certified green energy
  • Choice of flat or time-of-use fixed rates
  • No permanent stay required (usually)
  • Strong solar virtual battery offering

Cons

  • Slightly higher power prices than some discount brands
  • Focused primarily on digital interaction
  • Less known than the major national players

Available Tariffs

Alcanzia Tarifa Fija

Est. Monthly Bill
72.73
Energy (P1 / P2 / P3)
0.203288 / 0.122474 / 0.083217
€/kWh
Potencia (P1 / P2)0.101949 / 0.08553 €/kW
Solar ExportN/A
Fixed FeeNone

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