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Factor Energía vs Niba

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), Niba is the cheaper option. Their niba Tres tariff results in an estimated monthly bill of 68.67 (including taxes). This compares to Factor Energía's best option (Factor Tarifa Respira) at €86.97 per month.

Factor Energía Best Bill
86.97
Niba Best Bill
68.67

* 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

Niba wins here. Their flat rate is 0.119 €/kWh compared to Factor Energía's 0.1596 €/kWh.

Best Time-of-Use Rate

Niba has cheaper off-peak hours (0.083 €/kWh vs 0.151 €/kWh).

Scorecard Comparison

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

Full Head-to-Head Comparison

Factor Energía

Factor Energía

4 / 5 (4,000+ reviews)
Founded1999
Customers300,000+
Energy100% Renewable

Pros

  • First independent provider in Spain
  • 100% Certified renewable energy
  • Excellent mobile app for tracking usage
  • Very transparent billing structure

Cons

  • Customer service wait times during peak hours
  • Fixed rates can be slightly higher than variable market rates
  • Focus is primarily on the Spanish peninsula

Available Tariffs

Factor Tarifa Respira

Est. Monthly Bill
86.97
Energy (P1 / P2 / P3)
0.2765 / 0.2184 / 0.151
€/kWh
Potencia (P1 / P2)0.075903 / 0.001987 €/kW
Solar ExportN/A
Fixed FeeNone

Tarifa Fija Precio Único

Est. Monthly Bill
97.34
Energy (24h)0.1596 €/kWh
Potencia (P1 / P2)0.1265 / 0.1265 €/kW
Solar ExportN/A
Fixed FeeNone
Niba

Niba

4.1 / 5 (150+ reviews)
Founded2025
Customers10,000+
Energy100% Renewable

Pros

  • Backed by the infrastructure and stability of Iberdrola
  • Extremely competitive flat fixed rate ({rate})
  • No permanent contract commitments
  • 100% green energy certificates
  • Easy digital sign-up and management

Cons

  • Customer service is primarily digital-focused
  • Limited history compared to century-old traditional giants

Available Tariffs

niba Solar

Est. Monthly Bill
71.96
Energy (24h)0.119 €/kWh
Potencia (P1 / P2)0.091 / 0.091 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone

niba Zen

Est. Monthly Bill
71.96
Energy (24h)0.119 €/kWh
Potencia (P1 / P2)0.091 / 0.091 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone

niba Tres

Est. Monthly Bill
68.67
Energy (P1 / P2 / P3)
0.193 / 0.135 / 0.083
€/kWh
Potencia (P1 / P2)0.077 / 0.077 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone

niba Flex

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 Export0.06 €/kWh
Fixed FeeNone

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