AIKO vs VSUN - solar panel manufacturer comparison
AIKO has the broader catalog (144 vs 111 models). AIKO leads on peak efficiency at 25.20%. VSUN leans bifacial (75% of lineup).
Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.
The two companies
- Founded
- 2009
- Headquarters
- Shanghai, China
- Listed
- SZSE: 600732
- Tier 1 bankable
- Yes
Catalogue against catalogue
An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.
What each of them builds
AIKO skews to higher efficiency: 85% of lineup is 23%+
AIKO offers more 600W+ panels (60% of lineup)
Dominant cell tech: <strong>Back Contact</strong> (83%)
Dominant cell tech: <strong>TOPCon</strong> (72%)
The flagships
Written summary
AIKO is a Chinese solar manufacturer headquartered in Guangzhou that has built its identity around proprietary ABC (All Back Contact) n-type cell technology. The company achieved BloombergNEF Tier 1 status in Q3 2024 and has scaled rapidly - reaching approximately 20 GW of annual module capacity by early 2025 with further growth reported through 2026. ABC module shipments grew to roughly 14.7 GW in 2025, placing AIKO among the fastest-rising names in high-efficiency solar. VSUN, by contrast, is a smaller manufacturer backed by Japanese capital through the holding company Fuji Solar, with core production operations in Vietnam. Founded in June 2015, VSUN attained BloombergNEF Tier 1 recognition as early as 2019 - reconfirmed in Q1 2025 - and has built module capacity to approximately 4 GW, with expansion plans targeting 8 GW. By production volume and institutional footprint, AIKO is currently the larger and more prominent player.
AIKO's lineup centers on the INFINITE platform of ABC modules, which achieve confirmed volume efficiencies above 25% and a temperature coefficient of -0.26%/°C - better than typical TOPCon at around -0.29%/°C. The all-back-contact, dual-glass format is aimed primarily at premium residential rooftop and commercial-and-industrial buyers where roof space is limited and appearance matters; ABC technology has reportedly captured more than 21% of Europe's residential solar market. VSUN's portfolio relies on n-type TOPCon bifacial technology across a range of outputs suited to residential, commercial, and utility-scale ground-mount projects. PV Evolution Labs awarded VSUN a "Top Performer" designation for five consecutive years through 2025, a third-party reliability credential that carries weight in project-finance procurement.
For most buyers in 2025, AIKO is the stronger pick when efficiency per square meter and long-term output are the top priorities - particularly for constrained residential rooftops. VSUN is the more practical route for budget-sensitive commercial or utility-scale procurement, where PVEL-validated reliability and the maturity of the TOPCon supply chain provide bankable assurance. The two brands occupy distinct niches rather than being interchangeable.
- AIKO fourth-generation INFINITE ULTRA module unveiled at Intersolar Europe 2026
- What makes AIKO ABC technology stand out from PERC, TOPCon or HJT
- VSun Solar achieves BloombergNEF Tier 1 Solar Module Maker status
- VSUN starts production at wafer facility in Vietnam
- VSUN profile and buyer reviews on EnergySage
Generated by Claude Sonnet · 2026-06-13
Other brand comparisons
Shop prices: See 174 AIKO offers · See 4 VSUN offers
Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.