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Plenitude 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 Plenitude's best option (Plenitude Fácil Plus Luz (≤ 5 kW)) at €70.23 per month.

Plenitude Best Bill
70.23
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

Plenitude wins here. Their flat rate is 0.107914 €/kWh compared to Niba's 0.119 €/kWh.

Best Time-of-Use Rate

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

Scorecard Comparison

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

Full Head-to-Head Comparison

Plenitude

Plenitude

4.6 / 5 (2,500+ reviews)
Founded2021
Customers300,000+
Energy100% Renewable

Pros

  • 100% Gecertificeerde groene energie
  • Eenvoudige, stabiele vaste-prijs tarieven
  • Sterke financiële basis via Eni
  • Geen vaste looptijd of boetes

Cons

  • Traditioneel klantenservicemodel
  • Prijzen kunnen hoger zijn dan bij prijsvechters
  • Focus ligt sterk op vaste tarieven

Available Tariffs

Plenitude Fácil Plus Luz (≤ 5 kW)

Est. Monthly Bill
70.23
Energy (24h)0.107914 €/kWh
Potencia (P1 / P2)0.099984 / 0.099984 €/kW
Solar ExportN/A
Fixed FeeNone

Plenitude Fácil Plus Luz (> 5 kW)

Est. Monthly Bill
75.01
Energy (24h)0.120419 €/kWh
Potencia (P1 / P2)0.099984 / 0.099984 €/kW
Solar ExportN/A
Fixed FeeNone
Niba

Niba

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

Pros

  • Gesteund door de infrastructuur en stabiliteit van Iberdrola
  • Zeer concurrerend vast tarief ({rate})
  • Geen vaste contractduur / boetevrij overstappen
  • 100% groenestroomcertificaten
  • Eenvoudige digitale aanmelding en beheer

Cons

  • Klantenservice is voornamelijk digitaal gericht
  • Kortere geschiedenis in vergelijking met traditionele gevestigde namen

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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