SolaX Power Wins TÜV Rheinland "All Quality Matters" Award for Excellence in Utility String Inverters

On September 24, 2025, at the All Quality Matters Solar & ESS Congress 2025, SolaX Power’s X3-GRD-350K-HV was honored with the Quality Plus Inverter. This recognition underscores SolaX’s position as a technology leader and quality benchmark in the global solar inverter industry.

The award is grounded in the TÜV Rheinland All Quality Matters Assessment System, which rates products across five tiers — Basic Quality, Quality Plus, Advanced Quality, Premium Quality and Ultra Quality. Within the Quality Plus category, the X3-GRD-350K-HV stood out as the only winning product, excelling not only did it satisfy basic safety, grid compliance, and EMC requirements, but it also delivered leading performance in conversion efficiency, power quality, reliability metrics, and showed exceptional resilience under stress tests (e.g. high temperature and thermal cycling).

Powerful Solutions for Utility-Scale Solar

The award-winning technology is exemplified by the SolaX X3-GRAND HV, designed to meet the growing demands of large-scale solar projects. Offering power outputs up to 350 kW, the X3-Grand HV features:

Maximum 150% PV oversizing with 6 MPPTs and up to 30 strings, ensuring optimal power generation.

• Up to 99.03% efficiency with global MPPT scanning and intelligent grid support functions.

• Robust reliability, supporting operation at altitudes up to 5000m, IP66 protection, and advanced surge protection.

• Simplified O&M, with features such as smart fan self-cleaning and remote monitoring, reducing downtime and maintenance costs.

  
  

The X3-GRD-350K-HV is part of SolaX’s Utility-Scale PV Solutions, delivering a complete ecosystem for large ground-mounted projects, from advanced PV inverters to integrated monitoring and grid services. This comprehensive solution not only reduces the Levelized Cost of Energy (LCOE), but also helps utilities and developers accelerate the global energy transition.

Driving the Energy Transition with Quality

This prestigious award is a strong endorsement of SolaX’s unwavering focus on quality and innovation. Guided by the vision of “To be the trusted global leader in smart energy solutions,” SolaX will continue advancing next-generation inverter technologies and supporting the global shift toward clean, resilient energy systems.