SolaX X1-SMART G2 8.0kW Single-Phase 3-MPPT String Inverter

A premium single-phase inverter for more complex residential systems

SolaX X1-SMART G2 8.0kW Single-Phase 3-MPPT String Inverter is designed for larger residential PV systems where tracker flexibility matters just as much as raw output. Its defining feature is the three-MPPT layout, which gives installers more scope to split arrays intelligently across multiple roof faces or grouped sections. That makes it particularly attractive for larger homes with more demanding roof layouts where a standard two-tracker inverter would be more restrictive.

At 8.0kW rated output, it is clearly positioned above the standard end of the home solar market. This is not a basic residential inverter. It is a more capable platform for technically stronger single-phase systems, where homeowners want meaningful solar generation and installers need a cleaner way to manage a more segmented array.

Why the 8.0kW X1-SMART G2 stands out

The three-MPPT architecture is the real differentiator here. In practice, it means the inverter can track three separate array sections independently, which is valuable on properties with multiple orientations, roof breaks or more varied layouts. That helps the system design stay cleaner and can help protect performance where different roof sections behave differently over the day.

Alongside that, the inverter supports up to 16kWp of recommended PV array power, 200% oversizing and 110% AC overloading. That gives it the scale needed for larger homes and more ambitious residential systems, particularly those using modern high-current modules. It is a product designed for homeowners who want their inverter choice to match the scale and quality of the array being installed.

Key specifications and their value

• 8000W rated output
• Up to 16kWp recommended PV input
• Three independent MPPTs
• 200% PV oversizing support and 110% AC overloading
• 20A maximum input current and 25A short-circuit current per MPPT
• 40 to 560V MPPT range and 50V start-up voltage
• Type II SPD on both AC and DC
• Rapid shutdown readiness and wider platform AFCI support
• Advanced communication options including WiFi, LAN and 4G support
• IP66 enclosure and natural cooling

These are serious residential specifications. The 20A input current per MPPT is particularly relevant for modern panel types, while the 16kWp recommended array size shows this inverter is intended for substantial home solar systems rather than basic domestic installs. The triple-MPPT format is what turns that capacity into a more useful real-world design tool.

Monitoring, communication and smart capability

SolaX positions the X1-SMART G2 as a more advanced residential platform, and the communications package reflects that. The inverter supports multiple communication paths including WiFi, LAN and 4G, along with plug-and-play communication hardware, 10-second data refresh intervals, I-V curve diagnosis and 24-hour consumption monitoring. These are strong features for projects where visibility, diagnostics and system oversight matter.

That matters because larger domestic systems are often monitored more actively. Homeowners want stronger insight into performance, and installers want cleaner commissioning and easier aftercare. The X1-SMART G2 is designed to meet those expectations more comfortably than a basic residential inverter would.

Protection and system integration

Protection is another strength of this model. Built-in Type II surge protection on both AC and DC is backed by a wider safety package that includes anti-islanding protection, reverse-polarity protection, grid monitoring, residual current detection, DC injection monitoring and over-temperature protection. Rapid shutdown readiness is also important, while AFCI support on the wider platform helps reinforce its higher-spec positioning.

The inverter also supports wider smart energy functionality, including management features that make it more relevant to homes integrating solar with other electrical loads such as heat pumps and EV charging. That makes it particularly interesting for households treating solar as part of a broader home electrification plan rather than as a standalone generation product.

Installation and fitment

At roughly 515 x 370 x 170 mm and around 19.5kg, the X1-SMART G2 8.0kW is larger than the BOOST models, but still very manageable for a residential inverter in this class. The IP66 enclosure supports installation in more exposed positions where appropriate, and natural cooling helps keep operation quieter and simpler in domestic environments.

The real installation story here is not just the size of the box. It is the flexibility created by three MPPTs. On homes where the roof design is genuinely more segmented, that extra tracker gives installers a better technical fit than a simpler dual-MPPT platform.

Who it suits best

This inverter is best suited to larger single-phase residential properties, homes with multiple roof orientations and projects where higher-output panels, more array segmentation and stronger system monitoring are all part of the design brief. It is especially well matched to premium domestic solar systems where layout complexity and system ambition both matter.

Compared with more basic residential inverters, it offers greater design freedom and stronger communication features. That is what makes it such a compelling step up for larger or more technically demanding home solar projects.

Final view

SolaX X1-SMART G2 8.0kW Single-Phase 3-MPPT String Inverter is a highly capable residential inverter for larger single-phase systems that need more than standard dual-MPPT flexibility. With up to 16kWp of PV support, three MPPTs, 200% oversizing, 110% AC overloading, strong communications options, Type II SPD on AC and DC and IP66 protection, it is an excellent choice for premium domestic solar installations.