- 1SolaX is a Top 3 global residential ESS supplier with 1.4 million energy storage systems deployed across 110+ countries since pioneering Asia’s first hybrid inverter in 2013.
- 212-year warranty on X1-Boost G4 string inverters – one of the longest standard warranties in the market, matching GivEnergy.
- 3Under 10ms EPS switchover – UPS-level backup power for seamless protection during grid outages.
- 4X1-FIT retrofit option – add battery storage to any existing solar system without replacing the original inverter.
SolaX Power has established itself as a leading manufacturer of solar inverters and energy storage systems, ranking among the world’s top three suppliers of residential battery energy storage systems. Founded in 2012 in Hangzhou, China, the company pioneered Asia’s first energy storage inverter in 2013 and has since deployed over 1.4 million residential energy storage systems across more than 110 countries.
With approximately 30% of its workforce dedicated to research and development, SolaX has accumulated over 338 patents and secured more than 1,100 global certifications by the end of 2024. The company operates a 100,000 square metre factory with annual production capacity of 22 GW for inverters, making it one of the larger players in the global solar industry. SolaX maintains a UK subsidiary established in 2014, providing local support.
This review examines the complete SolaX product range available in the UK, including the X1 Mini, X1 Boost, and X1 Hybrid single-phase inverters, the X3 Hybrid three-phase series, Triple Power battery systems, and the SolaX Cloud monitoring platform. We compare SolaX to alternatives like GivEnergy inverters and Sungrow.
Why People Choose It
- Top 3 global residential ESS supplier
- 12-year warranty on X1-Boost G4
- Under 10ms UPS-level EPS switchover
- 200% PV oversizing capability
- X1-FIT retrofit for existing systems
- Operates down to -35°C
Considerations
- Hybrid warranty split full/parts
- Off-grid requires annual inspection
- Must register within 90 days
- App setup issues reported
- Most models limited to 2 MPPTs
- 5-minute data refresh (not real-time)
SolarLove Rating
Based on performance, value, reliability, and support
X1-Hybrid 5.0 G4 + Triple Power 9kWh
- 5kW hybrid with 200% PV oversizing
- Under 10ms EPS switchover
- 9kWh Triple Power T30 battery
- Smart tariff compatible (Octopus Go)
- Full operation down to -35°C
- 10-year battery warranty
X1 Hybrid G4 Series
The X1 Hybrid G4 represents SolaX’s fourth generation single-phase hybrid inverter, combining solar generation with battery storage capabilities. Designed for residential properties, these inverters support up to 200% PV oversizing, achieve 97% charge/discharge efficiency, and feature built-in EPS switchover under 10 milliseconds.
| Model | X1-Hybrid 3.0 | X1-Hybrid 5.0 | X1-Hybrid 6.0 | X1-Hybrid 7.5 |
|---|---|---|---|---|
| Rated output | 3.0 kW | 5.0 kW | 6.0 kW | 7.5 kW |
| Max PV input | 4.5 kWp | 7.5 kWp | 9.0 kWp | 11.3 kWp |
| MPPT trackers | 2 | 2 | 2 | 2 |
| EPS output | 3.0 kW | 5.0 kW | 6.0 kW | 7.5 kW |
| EPS switchover | <10ms | <10ms | <10ms | <10ms |
Triple Power Battery
SolaX’s Triple Power battery range uses LiFePO4 chemistry for enhanced safety and longevity. The T30 (3kWh modules) and T58 (5.8kWh modules) both feature modular stackable designs with 6,000+ cycle life and 10-year warranty.
| Chemistry | Lithium Iron Phosphate (LFP) |
| T30 module | 3.0 kWh (2.7kWh usable) |
| T58 module | 5.8 kWh (5.2kWh usable) |
| Cycle life | 6,000+ cycles |
| Round-trip efficiency | 95% |
| Warranty | 10 years |
SolaX vs Competitors
| Aspect | SolaX | GivEnergy | Sungrow |
|---|---|---|---|
| Global position | Top 3 ESS | UK market leader | #2 globally |
| Max efficiency | 98.5% | 97.6% | 98.7% |
| EPS switchover | <10ms | 20ms | <10ms |
| String warranty | 12 years | 12 years | 10 years |
| Battery warranty | 10 years | 12 years | 10 years |
Summary
SolaX Power has established itself as a global leader in residential energy storage systems through continuous innovation since pioneering Asia’s first hybrid inverter in 2013. The company’s comprehensive product range covers all residential applications from small entry-level systems through to larger three-phase installations with substantial battery storage.
For UK homeowners, SolaX offers particular strengths in hybrid and storage applications. The X1-Hybrid G4 series provides excellent features for homes wanting to maximise self-consumption and participate in smart tariff arbitrage, while the X1-FIT offers a practical retrofit solution for adding batteries to existing solar installations.
Compare SolaX with alternatives in our best solar inverters guide. For system costs, see our solar panel costs guide.
