Niba vs Iberdrola
Live Comparison • July 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 Solar tariff results in an estimated monthly bill of €69.88 (including taxes). This compares to Iberdrola's best option (Plan Online) at €71.75 per month.
Niba Best Bill
€69.88
Iberdrola Best Bill
€71.75
* 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 0.115 €/kWh compared to Iberdrola's 0.1199 €/kWh.
Best Time-of-Use Rate
Niba has cheaper off-peak hours (0.089 €/kWh vs 0.09999 €/kWh).
Scorecard Comparison
| Metric (1-10) | Niba | Iberdrola |
|---|---|---|
| Price Competitiveness | 9 | 6 |
| Solar Suitability | 8 | 7 |
| EV Suitability | 7 | 7 |
| Simplicity | 9 | 5 |
| Customer Service | 8 | 5 |
| Transparency | 9 | 5 |
Full Head-to-Head Comparison
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€69.88
Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.
Energy (24h)0.115 €/kWh
Potencia (P1 / P2)0.089 / 0.089 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone
niba Zen
Est. Monthly Bill€69.88
Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.
Energy (24h)0.115 €/kWh
Potencia (P1 / P2)0.089 / 0.089 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone
niba Tres
Est. Monthly Bill€71.71
Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.
Energy (P1 / P2 / P3)
0.196 / 0.169 / 0.089
€/kWh
Potencia (P1 / P2)0.079 / 0.059 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone
niba Flex
Est. Monthly Bill€73.43
Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.
Energy (P1 / P2 / P3)
0.224 / 0.16 / 0.136
€/kWh
Potencia (P1 / P2)0.076 / 0.002 €/kW
Solar Export0.06 €/kWh
Fixed FeeNone
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€82.45
Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.
Energy (24h)0.1711 €/kWh
Potencia (P1 / P2)0.1042 / 0.0104 €/kW
Solar ExportN/A
Fixed FeeNone
Plan Planazo
Est. Monthly Bill€89.63
Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.
Energy (24h)0.1899 €/kWh
Potencia (P1 / P2)0.1042 / 0.0104 €/kW
Solar ExportN/A
Fixed FeeNone
Plan Online
Est. Monthly Bill€71.75
Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.
Energy (24h)0.1199 €/kWh
Potencia (P1 / P2)0.119151 / 0.058877 €/kW
Solar ExportN/A
Fixed FeeNone
Plan Estable
Est. Monthly Bill€83.55
Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.
Energy (24h)0.143331 €/kWh
Potencia (P1 / P2)0.116411 / 0.082164 €/kW
Solar ExportN/A
Fixed FeeNone
Plan Online 3 Periodos
Est. Monthly Bill€75.45
Based on a typical profile: 3.6kW Potencia, 300kWh monthly usage (20% P1, 30% P2, 50% P3), plus standard IVA (21%), Electricity Tax (5.11%), and ~1€ meter hire.
Energy (P1 / P2 / P3)
0.194 / 0.136 / 0.09999
€/kWh
Potencia (P1 / P2)0.119151 / 0.058877 €/kW
Solar ExportN/A
Fixed FeeNone
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