Longi Solar vs Trina Solar - solar panel manufacturer comparison

LONGi Solar and Trina Solar are both Chinese Tier 1 bankable manufacturers that rank among the top four global PV module suppliers, yet they differ in company history, scale, and strategic technology focus. LONGi was founded in 2000, is listed on the Shanghai Stock Exchange, and employs 37,853 people with a production capacity of 85-90 GW - making it one of the largest solar manufacturers in the world by installed capacity. In the first half of 2025, LONGi shipped approximately 39.57 GW of modules, ranking second globally. Trina Solar was founded three years earlier, in 1997, and shipped over 32 GW in the same period, securing third place worldwide. Trina has particularly strengthened its European presence, with Europe accounting for roughly 25% of its sales in H1 2025, and the brand reaching the top position in European market popularity in early 2026 - ahead of LONGi, whose European shipments accounted for around 16% of overseas sales in 2024.

The two manufacturers diverge most clearly in their cell technology strategies. LONGi has positioned itself as the leader in back-contact N-type technology, with its Hi-MO X series built on the proprietary HPBC 2.0 platform. This delivers the highest average efficiency in the comparison at 22.65% (max 25%), a superior average temperature coefficient of -0.291%/°C, and an average module power of 543.5 Wp - making LONGi a strong candidate for residential rooftop installations and commercial C&I projects where shading tolerance, efficiency per square meter, and thermal performance are priorities. Trina Solar, by contrast, has committed heavily to TOPCon, with nearly 70% of its 305-panel portfolio based on this technology. Its Vertex series reaches up to 740 Wp - the highest peak wattage in this comparison - and its i-TOPCon cell achieved an independently certified record efficiency of 26.58%. This high unit power output makes Trina a competitive choice for utility-scale ground-mount projects where maximizing energy yield per installation footprint drives procurement decisions. Both manufacturers offer bifacial panels in approximately 39% of their respective portfolios, and average product warranties of 27.8 and 28.1 years respectively.

For international buyers selecting between the two, LONGi is the stronger option for residential and C&I applications where shade tolerance, high per-module efficiency, and favorable temperature coefficients are decisive factors. Trina Solar's broader portfolio, higher peak wattage, and deep TOPCon production scale make it more suited to large utility-scale procurement, and its expanding European distribution network supports reliable supply chains for European and Polish installers alike. Both carry low financial risk given their Tier 1 status, global shipment volumes, and active R&D pipelines pushing next-generation tandem cell technology.

Generated by Claude Sonnet · 2026-05-12