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ACIS vs Niba

Live Comparison • octubre 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

Not enough tariff data available to calculate a typical monthly bill comparison.

Best Flat Rate

Niba is the only provider offering a true 24-hour flat rate (0.123 €/kWh).

Best Time-of-Use Rate

Neither provider currently offers a fixed time-of-use rate.

Full Head-to-Head Comparison

ACIS

ACIS

Available Tariffs

No active tariffs found.

Niba

Niba

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

Pros

  • Respaldada por la infraestructura y estabilidad del grupo Iberdrola
  • Tarifa fija plana extremadamente competitiva ({rate})
  • Sin compromisos de permanencia
  • Energía 100% verde certificada
  • Contratación y gestión 100% online sencillas

Cons

  • Atención al cliente orientada principalmente al canal digital
  • Marca joven con menor trayectoria que las comercializadoras tradicionales

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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