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Naturgy vs Niba

Live Comparison • October 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), Naturgy is the cheaper option. Their Tarifa Noche tariff results in an estimated monthly bill of €71.61 (including taxes). This compares to Niba's best option (niba Zen) at €73.49 per month.

Naturgy Best Bill
€71.61
Niba Best Bill
€73.49

* 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 0.123 €/kWh compared to Naturgy's 0.123 €/kWh.

Best Time-of-Use Rate

Naturgy is the only provider offering a fixed 3-period time-of-use rate.

Scorecard Comparison

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

Full Head-to-Head Comparison

Naturgy

Naturgy

4.4 / 5 (2,700+ reviews)
Founded1843
Customers5,000,000+
EnergyMixed (Gas + Renewables)

Pros

  • Best for combined Gas & Light
  • Simple, transparent tariffs
  • Very stable company
  • Experienced technical service

Cons

  • Less aggressive on pure electricity pricing
  • Digital tools are basic compared to Octopus
  • Large corporate feel

Available Tariffs

Tarifa Por Uso Luz

Est. Monthly Bill
€73.85
Energy (24h)0.123 €/kWh
Potencia (P1 / P2)0.12303 / 0.061562 €/kW
Solar ExportN/A
Fixed FeeNone

Tarifa Noche

Est. Monthly Bill
€71.61
Energy (P1 / P2 / P3)
0.193 / 0.1201 / 0.085
€/kWh
Potencia (P1 / P2)0.12303 / 0.061562 €/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 Zen

Est. Monthly Bill
€73.49
Energy (24h)0.123 €/kWh
Potencia (P1 / P2)0.091 / 0.091 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone

niba Flex

Est. Monthly Bill
€105.25
Energy (P1 / P2 / P3)
0.317 / 0.236 / 0.22
€/kWh
Potencia (P1 / P2)0.076 / 0.002 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone

niba Solar

Est. Monthly Bill
€73.49
Energy (24h)0.123 €/kWh
Potencia (P1 / P2)0.091 / 0.091 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone

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