As solar developers, financiers, and asset owners place increasing emphasis on long-term system performance and independent technical validation, LONGi today announced it reached the quality threshold for recognition in the Overall Highest Achiever category in the 2026 PV Module Index (PVMI) Report, published by RETC, part of the VDE Group. This report is one of the solar industry’s most widely referenced independent testing and bankability benchmarks. The distinction recognizes manufacturers that successfully complete RETC’s comprehensive Thresher Test Program and demonstrate high achievement in reliability, performance, and quality through extended stress testing and third-party validation protocols.
“In an increasingly dynamic global market, quality and reliability are essential to the sustainable growth of the solar industry,” said Eric Luo, Group Vice President and President of North America, LONGi. “This recognition reflects LONGi's long-standing commitment to product quality and continuous innovation. As solar deployment continues to accelerate, LONGi remains committed to advancing technologies that deliver reliable performance throughout the life of a project.”
For more than two decades, LONGi has focused on advancing solar technology while maintaining a strong commitment to product quality. The company's approach combines continuous innovation with disciplined manufacturing and rigorous validation practices that support reliable long-term performance. As the energy landscape continues to evolve, LONGi remains dedicated to raising industry standards and driving the development of solar technologies that contribute to a more sustainable energy future.
“The industry’s transition toward higher-efficiency architectures and larger module formats is raising the bar for manufacturing consistency and long-term field reliability,” said Cherif Kedir, CEO of RETC. “LONGi’s continued recognition through the PV Module Index reflects the company’s ability to maintain strong operational quality while continuing to scale globally and evolve its technology portfolio.”
The RETC PVMI is widely referenced across the solar industry from manufacturers and developers to asset owners, financiers, and insurers seeking independent performance and reliability data. The 2026 PVMI reflects the industry’s growing focus on production consistency, long-term asset durability, and technical due diligence as global solar deployment continues to accelerate and stakeholders place greater scrutiny on long-term project performance and bankability. RETC’s PVMI testing program evaluates PV modules using extended testing protocols to assess durability, operational resilience, and long-term field reliability under conditions that reflect real-world operating environments.
The full 2026 PV Module Index Report includes additional analysis on photovoltaic module reliability, performance, quality trends, and long-term bankability considerations across the global solar industry. To access the report, visit https://retc-ca.com/pvmi.
About RETC, part of the VDE Group
RETC is an independent testing and certification laboratory specializing in solar and energy storage products. Since 2009, renewable energy manufacturers, developers, financiers, and independent engineers have relied on RETC to generate trusted, third-party data for evaluating product performance, reliability, and bankability. Headquartered in Fremont, Calif., with facilities in Tempe, Ariz., RETC is part of the VDE Group and supports global testing and certification efforts across the energy transition and an expanding range of market segments.
By providing independent, defensible data for photovoltaic (PV) modules, inverters, battery energy storage components, and racking products, RETC helps reduce friction across operational functions. From technical diligence and stakeholder alignment to accelerated market adoption of proven technologies, RETC results and reports inform stakeholders on what products are suitable for large-scale renewable energy deployment. Specifically, the company's Thresher Test Program is widely utilized to assess the long-term durability of solar panel technologies and to inform procurement, financing, and insurance decisions.
For more information, visit www.retc-ca.com.
About LONGi
Founded in 2000, LONGi Green Energy Technology Co., Ltd. (LONGi) is committed to being the most valuable solar technology company in the world.
We work under the mission of making the best of solar energy to build a green world. Our brand is positioned to being the most trusted, reliable solar company that continues to blaze the trail for green technology. LONGi is developing solutions for large-scale power plants, different industries and households with its innovative-focused development. In the future, we will also supply Green Power and Green Hydrogen solutions for global zero-carbon development.