X1-BOOST-6K-G4
The Solax X1-BOOST-6K-G4 is a 6 kW single-phase string photovoltaic inverter from the G4 series, designed for residential systems that do not require storage. Equipped with 2 independent MPPTs, 200% PV oversizing, a start-up voltage of just 50V, integrated export control, and IP66 protection. CEI 0-21:2022 certified, compatible with EV wallboxes and heat pumps through intelligent load management.
The Solax X1-BOOST-6K-G4 is a single-phase 6 kW string photovoltaic inverter from the fourth generation X1-BOOST series, designed for residential photovoltaic systems without storage that seek maximum production, easy installation, and advanced features at a competitive price. Thanks to its low start-up voltage of 50V and integrated global MPP scan, it maximizes energy yield from the very first hours of sunlight and in partial irradiation conditions.
Why choose a string inverter over a hybrid?
If the system does not include storage — or if batteries will be installed in the future with a dedicated inverter — the string inverter is the most economical and efficient choice. The X1-BOOST-6K-G4 offers the same smart features as Solax hybrid inverters (export control, SolaxCloud monitoring, EV and heat pump integration) without the additional costs of the battery management section.
X1-BOOST-6K-G4 Technical Specifications
| Nominal AC Power | 6.0 kW |
| No. of MPPT | 2 independent |
| Max DC input current | 16 A per string |
| PV oversizing | 200% |
| Start-up voltage | 50 V |
| Certification | CEI 0-21:2022 |
| Export control | Integrated |
| Global MPP scan | Yes (integrated) |
| SPD | Type II AC/DC (optional) |
| AFCI DC | Optional |
| RSD (Rapid Shutdown) | Optional external |
| Monitoring | SolaxCloud (Wi-Fi) |
| Protection rating | IP66 |
| Dimensions | 404 × 274 × 146 mm |
| Weight | 11 kg |
| Warranty | 10 years |
Main Features
The X1-BOOST-6K-G4 is compatible with Solax's Datahub system for mass management in multi-inverter systems, and supports master/slave configuration via Modbus for parallel installations. The integrated export control function allows you to easily set the feed-in limit to the grid (including zero export), without the need for external meters. The optional 10-second data update (with new Wi-Fi dongle) enables near real-time monitoring of production. It is also adaptable to home EV charging and heat pump solutions through intelligent load management.
Frequently Asked Questions
Can the Solax X1-BOOST-6K-G4 be upgraded in the future to manage storage?
No, the X1-BOOST is a pure string inverter and cannot manage batteries. To add storage in the future, a separate hybrid inverter (e.g., Solax X1-HYBRID) or an AC-coupled storage system will be required. If you are planning for storage, it is advisable to consider a hybrid inverter from the start, such as the X1-HYBRID-6.0-D.
Is the X1-BOOST-6K-G4 certified for the Italian grid CEI 0-21?
Yes, the X1-BOOST-6K-G4 is CEI 0-21:2022 certified, a mandatory requirement for low-voltage connection to the Italian grid and for access to GSE incentives. CEI 0-16 certification (medium voltage) is not provided for this model.
How does the integrated export control work in the X1-BOOST-6K-G4?
The export control allows you to limit or zero the energy fed into the grid via a meter (CT or meter) connected to the inverter. It is useful where local regulations or the contract with the distributor limit feed-in. The setting is done directly from the SolaxCloud app without the need for additional external devices.
Is the Solax X1-BOOST-6K-G4 compatible with a wallbox for electric vehicles?
Yes, the X1-BOOST-6K-G4 supports integration with home EV chargers (such as the Solax X1-EVC) and heat pumps through the intelligent load management function. This allows you to prioritize vehicle charging when the photovoltaic system is producing excess energy, reducing grid withdrawals.
How many panels can be connected to the X1-BOOST-6K-G4?
Thanks to the 200% PV oversizing, modules with a total peak power of up to 12 kWp can be connected. The 2 independent MPPTs with 16A per string each support the latest generation photovoltaic modules from 400-600 Wp. The low start-up voltage of 50V ensures production even with very little irradiation.
