DAS Solar vs Longi Solar - solar panel manufacturer comparison

DAS Solar is a Chinese solar manufacturer that secured BloombergNEF Tier 1 status for four consecutive quarters throughout 2025. The company operates 14 factories worldwide and had built approximately 40 GW of combined cell and module capacity by mid-2025, with a stated target of approaching 50 GW by year-end. In the global module shipment rankings for 2024, DAS Solar placed among the top ten suppliers. LONGi Solar, headquartered in Xi'an, China, carries considerably more institutional weight: it is one of the longest-tenured names on the BNEF Tier 1 list and earned a rare double Tier 1 designation in Q1 2026 covering both PV modules and energy storage. LONGi shipped more than 63 GW of cells and modules in the first nine months of 2025 alone, representing roughly 24% year-on-year growth. By shipment volume and sustained bankability ratings, LONGi holds the stronger institutional footprint of the two.

DAS Solar's product strategy is anchored in its TOPCon 4.0 platform, with a development roadmap it describes as "one core, three branches" - adding DBC back-contact, TSiP, and SFOS as forward-looking technology tracks. The lineup spans residential rooftop, commercial and industrial, and utility-scale ground-mount segments. LONGi offers a more differentiated range: the Hi-MO 9 targets utility-scale projects with output exceeding 670 W and high bifaciality; the Hi-MO X10, built on HPBC 2.0 back-contact technology, is suited to commercial rooftop and agrivoltaic installations and won the Smarter E Award in 2025; and the Hi-MO S10 is a residential heterojunction back-contact module confirmed at 25% efficiency, placing it among the highest-performing mass-production rooftop panels currently available. LONGi also holds world records for its HIBC cell at 27.81% efficiency and a silicon-perovskite tandem cell at 34.85%, underpinning its R&D credibility.

For most international buyers, LONGi is the lower-risk default: deeper installer support networks, a longer track record on project finance desks, and a larger organizational base to stand behind long-term warranties. DAS Solar is a compelling alternative, particularly in Europe where its planned 3 GW manufacturing facility in France could provide supply-chain diversification and potential local-content advantages in future public tenders. For standard commercial or utility projects using mainstream TOPCon modules, the practical performance gap between the two brands is narrow enough that pricing, delivery terms, and local distributor support will typically be the deciding factors.

Generated by Claude Sonnet · 2026-05-27