LONGi Green Energy Technology Co., Ltd.

LONGi Green Energy Technology Co., Ltd. is a China-based solar photovoltaic technology company headquartered in Xi'an, Shaanxi Province. Founded in 2000, the company achieved 70.347 billion CNY in 2025 revenue, operates a vast manufacturing network across China and Southeast Asia, employs over 60,000 people, and shipped an estimated 45+ GW of solar modules in 2025.

Core Business

LONGi is the world's largest producer of monocrystalline silicon wafers, the foundational building block of modern solar cells. The company was the primary force behind the solar industry's historic shift from lower-efficiency multicrystalline silicon to high-efficiency monocrystalline silicon—a technology transition that now defines over 95% of global PV production. LONGi's manufacturing operations span monocrystalline ingot pulling, diamond wire wafer slicing, high-efficiency solar cell fabrication, and module assembly, with a particular focus on back-contact (BC) cell architecture as its differentiated technology platform.

In 2025, LONGi expanded aggressively into green hydrogen, developing and manufacturing water electrolysis stacks that use renewable electricity to split water into hydrogen and oxygen. This ""solar + green hydrogen"" integration strategy positions the company to capture value across the emerging clean hydrogen value chain, from renewable power generation through to electrolyzer equipment supply. LONGi's BC technology roadmap targets cell conversion efficiencies exceeding 26% in mass production, creating premium-priced modules for rooftop solar, building-integrated PV, and other applications where space efficiency and aesthetics command higher margins than utility-scale projects.

Global Presence

LONGi ships products and provides services in over 150 countries and regions, with particularly strong brand recognition in North America and European markets where Wood Mackenzie rated the company 86.5 points for international brand strength. The company maintains manufacturing facilities across China and Southeast Asia, with ongoing capacity developments designed to navigate evolving trade barriers and tariff regimes. LONGi's global sales and service network supports utility-scale solar developers, commercial and industrial customers, and residential solar installers.

Key Strengths

LONGi's historical role as the primary driver of the industry's transition to monocrystalline silicon established enduring technology credibility and manufacturing expertise. The differentiated BC cell technology strategy avoids the brutal commoditization of mainstream TOPCon manufacturing. The 86.5-point Wood Mackenzie international brand rating validates strong market perception among global solar developers. Entry into green hydrogen electrolyzer manufacturing diversifies revenue beyond pure solar components. The distributed manufacturing footprint across multiple countries provides resilience against trade policy disruptions.

VerityRank Score of 87/100