Solar inverters · Compare

Fronius Primo GEN24 3.0 vs SolaX X1-MINI-3.0K-G4

AC power: Fronius Primo GEN24 3.0 3 kW, SolaX X1-MINI-3.0K-G4 3 kW. The SolaX X1-MINI-3.0K-G4 is better on 6 of 10 comparable points.

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Both models in detail

Who wins where

  • Fronius Primo GEN24 3.0
  • SolaX X1-MINI-3.0K-G4
PerformanceEfficiencyElectricalConnectivity & smartDimensions & weight
Performance: Fronius Primo GEN24 3.0 25, SolaX X1-MINI-3.0K-G4 15; Efficiency: Fronius Primo GEN24 3.0 22, SolaX X1-MINI-3.0K-G4 39; Electrical: Fronius Primo GEN24 3.0 38, SolaX X1-MINI-3.0K-G4 55; Connectivity & smart: Fronius Primo GEN24 3.0 23, SolaX X1-MINI-3.0K-G4 23; Dimensions & weight: Fronius Primo GEN24 3.0 77, SolaX X1-MINI-3.0K-G4 95

Biggest differences

FactPrimo GEN24 3.0X1-MINI-3.0K-G4
MPPT voltage min.190 V40 V
Weight15.4 kg5.5 kg
MPP trackers21
Max. input current per MPPT22 A16 A
Max. PV array power4.5 kWp6 kWp
MPPT voltage max.530 V550 V
All specifications ↓

Score per area = position (0–100) relative to all 263 models in this category; higher is better.

Technical specificationsFroniusPrimo GEN24 3.0SolaXX1-MINI-3.0K-G4
Performance
AC power3 kW13 kW1
Max. PV array power4.5 kWp26 kWp✓3
MPP trackers2✓213
Efficiency
Max. efficiency97.6 %298 %✓3
European efficiency96.8 %297 %✓3
Noise
Noise42 dB(A)2–
Electrical
MPPT voltage min.190 V240 V✓3
MPPT voltage max.530 V2550 V✓3
Max. input current per MPPT22 A✓216 A3
Phases1111
Connectivity & smart
Hybrid (battery-ready)No1No1
Backup powerYes2–
Wi-Fi / monitoringYes2–
Dimensions & weight
IP ratingIP662IP663
Width474 mm2290 mm3
Height530 mm2206 mm3
Depth165 mm2120 mm3
Weight15.4 kg25.5 kg✓3

Frequently asked questions

Which is better: the Fronius Primo GEN24 3.0 or the SolaX X1-MINI-3.0K-G4?

AC power: Fronius Primo GEN24 3.0 3 kW, SolaX X1-MINI-3.0K-G4 3 kW. The SolaX X1-MINI-3.0K-G4 is better on 6 of 10 comparable points.

What is the AC power of the Fronius Primo GEN24 3.0 and the SolaX X1-MINI-3.0K-G4?

Fronius Primo GEN24 3.0: 3 kW. SolaX X1-MINI-3.0K-G4: 3 kW.

Which is better on MPPT voltage min.: the Fronius Primo GEN24 3.0 or the SolaX X1-MINI-3.0K-G4?

SolaX X1-MINI-3.0K-G4: 40 V. Fronius Primo GEN24 3.0: 190 V.

Which is better on weight: the Fronius Primo GEN24 3.0 or the SolaX X1-MINI-3.0K-G4?

SolaX X1-MINI-3.0K-G4: 5.5 kg. Fronius Primo GEN24 3.0: 15.4 kg.

How we collect and check this data →

Sources

  1. ENA Type Test Register (inverters) — Energy Networks Association (ENA) · accessed 27 Sept 2026
  2. Fronius Primo GEN24 & GEN24 Plus 3.0 - 6.0 kW – datasheet, EN V04 (June 2025) — Fronius International GmbH · accessed 27 Sept 2026
  3. X1-MINI G4, V1.7 — SolaX · accessed 17 Oct 2026