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Solar inverters · Compare

SolaX X1-MINI-2.5K-G4 vs Solis S6-GR1P2.5K-S

AC power: SolaX X1-MINI-2.5K-G4 2.5 kW, Solis S6-GR1P2.5K-S 2.5 kW. The SolaX X1-MINI-2.5K-G4 is better on 5 of 10 comparable points.

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Who wins where

  • SolaX X1-MINI-2.5K-G4
  • Solis S6-GR1P2.5K-S
PerformanceEfficiencyElectricalConnectivity & smartDimensions & weight

Biggest differences

FactX1-MINI-2.5K-G4S6-GR1P2.5K-S
MPP trackers12
Weight5.5 kg8.2 kg
Max. PV array power5 kWp3.75 kWp
MPPT voltage min.40 V50 V
All specifications ↓

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

SolaXX1-MINI-2.5K-G4SolisS6-GR1P2.5K-S
Performance
AC power2.5 kW12.5 kW1
Max. PV array power5 kWp✓23.75 kWp3
MPP trackers122✓3
Efficiency
Max. efficiency98 %✓297.3 %3
European efficiency97 %✓296.5 %3
Noise
Noise–20 dB(A)3
Electrical
MPPT voltage min.40 V✓250 V3
MPPT voltage max.550 V2550 V3
Max. input current per MPPT16 A216 A3
Phases1111
Connectivity & smart
Hybrid (battery-ready)No1No1
Dimensions & weight
IP ratingIP662IP663
Width290 mm2330 mm3
Height206 mm2371 mm3
Depth120 mm2161 mm3
Weight5.5 kg✓28.2 kg3

Frequently asked questions

Which is better: the SolaX X1-MINI-2.5K-G4 or the Solis S6-GR1P2.5K-S?

AC power: SolaX X1-MINI-2.5K-G4 2.5 kW, Solis S6-GR1P2.5K-S 2.5 kW. The SolaX X1-MINI-2.5K-G4 is better on 5 of 10 comparable points.

What is the AC power of the SolaX X1-MINI-2.5K-G4 and the Solis S6-GR1P2.5K-S?

SolaX X1-MINI-2.5K-G4: 2.5 kW. Solis S6-GR1P2.5K-S: 2.5 kW.

Which is better on MPP trackers: the SolaX X1-MINI-2.5K-G4 or the Solis S6-GR1P2.5K-S?

Solis S6-GR1P2.5K-S: 2. SolaX X1-MINI-2.5K-G4: 1.

Which is better on weight: the SolaX X1-MINI-2.5K-G4 or the Solis S6-GR1P2.5K-S?

SolaX X1-MINI-2.5K-G4: 5.5 kg. Solis S6-GR1P2.5K-S: 8.2 kg.

How we collect and check this data →

Sources

  1. ENA Type Test Register (inverters) — Energy Networks Association (ENA) · accessed Sep 27, 2026
  2. X1-MINI G4, V1.7 — SolaX · accessed Oct 17, 2026
  3. Solis Single Phase Grid-Tied Inverters S6-GR1P(2.5-6)K-S Datasheet, 1.0 — GINLONG TECHNOLOGIES CO.,LTD. · accessed Sep 29, 2026