This recognition underscores LONGi’s continued excellence in third-party testing and PV module performance
San Ramon, CA - LONGi Solar has been named the Overall Highest Achiever in the 2025 PV Module Index (PVMI) Report by the Renewable Energy Test Center (RETC), a leading engineering and certification lab for photovoltaic and renewable energy products.
This distinction highlights LONGi’s outstanding performance across rigorous third-party testing protocols and affirms the company’s unwavering commitment to product quality, reliability, and innovation. The PVMI evaluates manufacturers based on a series of accelerated stress tests and real-world performance metrics, serving as a benchmark for solar module excellence across the industry.
RETC is renowned for its testing protocols, such as the proprietary Thresher Test and Hail Durability Test, which have become industry benchmarks for beyond-certification assessments. These tests provide stakeholders with critical data to inform product development, bankability assessments, and market entry strategies.
“For the seventh consecutive year, we have recognized LONGi Solar as an ‘Overall Highest Achiever’ in our annual PV Module Index Report,” said Cherif Kedir, President and CEO of RETC. “This year-over-year performance is an unprecedented achievement, as LONGi is the only module company RETC has recognized as the best of the best in every edition of its annual technology report. We applaud LONGi for its proven commitment to excellence.”
“LONGi’s recognition as Overall Highest Achiever by RETC reinforces our global leadership in delivering high-performance, dependable solar technology,” said Eric Luo, Vice President of LONGi Group and President of LONGi North America. “Third-party validation is essential to earning the trust of our customers and partners, and we are proud to once again set the standard for PV module quality.”
The full 2025 PV Module Index Report will be available on RETC’s website beginning June 11, 2025: https://retc-ca.com/pvmi
To learn more about LONGi’s clean energy solutions and stay connected to our journey, visit www.longi.com and follow us on social media.
About RETC
The Renewable Energy Test Center (RETC), a member of the VDE Group, is a leading engineering services and certification testing provider for renewable energy products. Established in 2009 and headquartered in Fremont, California, RETC specializes in evaluating a broad spectrum of products, including photovoltaic (PV) modules, inverters, energy storage systems, and racking components.
Operating accredited laboratories across the United States, RETC is committed to delivering high-quality, timely, and customer-focused services. The company's dedication to enabling a safer and more sustainable future is reflected in its comprehensive testing methodologies and its role in advancing renewable energy technologies.
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.