Solar inverters · Compare

Fronius Primo GEN24 6.0 vs SolaX X3-MIC-6K-G2

AC power: Fronius Primo GEN24 6.0 6 kW, SolaX X3-MIC-6K-G2 6 kW. The SolaX X3-MIC-6K-G2 is better on 5 of 10 comparable points.

Who wins where

  • Fronius Primo GEN24 6.0
  • SolaX X3-MIC-6K-G2
PerformanceEfficiencyElectricalConnectivity & smartDimensions & weight
Performance: Fronius Primo GEN24 6.0 52, SolaX X3-MIC-6K-G2 58; Efficiency: Fronius Primo GEN24 6.0 31, SolaX X3-MIC-6K-G2 82; Electrical: Fronius Primo GEN24 6.0 31, SolaX X3-MIC-6K-G2 63; Connectivity & smart: Fronius Primo GEN24 6.0 18, SolaX X3-MIC-6K-G2 18; Dimensions & weight: Fronius Primo GEN24 6.0 79, SolaX X3-MIC-6K-G2 75

Biggest differences

FactPrimo GEN24 6.0X3-MIC-6K-G2
MPPT voltage max.480 V980 V
MPPT voltage min.230 V120 V
Max. input current per MPPT22 A16 A
Max. PV array power9 kWp12 kWp
All specifications ↓

Score per area = position (0–100) relative to all 238 models in this category; higher is better.

Technical specifications FroniusPrimo GEN24 6.0 SolaXX3-MIC-6K-G2
Performance
AC power 6 kW 1 6 kW 1
Max. PV array power 9 kWp 2 12 kWp ✓ 3
MPP trackers 2 2 2 3
Efficiency
Max. efficiency 97.6 % 2 98.3 % ✓ 3
European efficiency 97.1 % 2 97.8 % ✓ 3
Noise
Noise 42 dB(A) 2 –
Electrical
MPPT voltage min. 230 V 2 120 V ✓ 3
MPPT voltage max. 480 V 2 980 V ✓ 3
Max. input current per MPPT 22 A ✓ 2 16 A 3
Phases 1 1 3 1
Connectivity & smart
Hybrid (battery-ready) No 1 No 1
Backup power Yes 2 –
Wi-Fi / monitoring Yes 2 –
Dimensions & weight
IP rating IP66 2 IP66 3
Width 474 mm 2 342 mm 3
Height 530 mm 2 434 mm 3
Depth 165 mm 2 144.5 mm 3
Weight 15.4 kg ✓ 2 15.5 kg 3

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. X3-MIC G2, V3.1 — SolaX Power · accessed 29 Sept 2026