Frequently asked questions
Explore our most frequently asked questions to quickly find the information you need about LONGi products, services, warranties, installation, and more. If you can’t find what you’re looking for, our support team is here to help
Who is LONGi and what do we do?
LONGi is a global leader in solar technology, specializing in high-efficiency photovoltaic products and renewable energy solutions for all market segments.
Where are LONGi products manufactured?
LONGi panels are manufactured across state-of-the-art facilities in China and internationally, following rigorous quality standards and sustainability practices.
What makes LONGi solar panels different?
LONGi panels feature advanced cell technologies like HPBC and BC, delivering higher efficiency, better performance in low light, and long-term durability.
What are the differences between Hi-MO 7 and Hi-MO 9?
Hi-MO 7 is optimized for utility-scale projects with high efficiency and bifacial performance, while Hi-MO 9 brings next-gen HPBC 2.0 technology for even greater energy yield and aesthetics.
Do LONGi panels support bifacial energy capture?
Yes, several LONGi modules offer bifacial designs, capturing sunlight from both sides to increase total energy output, especially in reflective environments.
Are LONGi panels compatible with all inverter systems?
LONGi panels are compatible with most major inverter brands. Always consult your installer or LONGi partner to ensure system compatibility.
Can I install LONGi panels on residential rooftops?
Absolutely. The EcoLife series is specifically designed for residential use, with elegant designs and optimal efficiency for home energy needs.
What warranty do LONGi products come with?
LONGi panels typically come with a 12-year product warranty and a 25–30-year linear performance warranty, depending on the model.
Are LONGi panels certified for use in Europe?
Yes, all LONGi products meet international certification standards including IEC, TÜV, and CE, ensuring safety and compliance across markets.
How does LONGi contribute to sustainability?
LONGi is committed to green manufacturing, low-carbon innovation, and social responsibility, aligned with UN Sustainable Development Goals.
Typical response time?
Yes, LONGi designs its modules with recyclability in mind and supports industry programs that enable responsible end-of-life handling.
How can I become a LONGi partner or distributor?
You can contact the LONGi team via the “Contact Us” page to get in touch with your local representative and receive onboarding information.
What support does LONGi offer for commercial or utility projects?
LONGi offers technical consulting, simulation tools, logistics planning, and after-sales service for large-scale project development.