Just Solar vs AIKO - solar panel manufacturer comparison
AIKO has the broader catalog (144 vs 42 models). AIKO leads on peak efficiency at 25.20%.
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>TOPCon</strong> (52%)
Dominant cell tech: <strong>Back Contact</strong> (83%)
The flagships
Written summary
Just Solar is a China-based manufacturer founded in 2011, with production facilities in Zhejiang province and a self-stated annual capacity of around 1 GW. The company operates primarily as an OEM and ODM supplier, holding certifications including TUV, CE, CEC, and UK MCS, but no confirmed BloombergNEF Tier 1 bankability listing has been identified in publicly available industry data. AIKO Solar, also headquartered in China, was founded in 2009 and has grown substantially, reaching approximately 20 GW of annual module production capacity as of early 2025. AIKO achieved BloombergNEF Tier 1 status in Q3 2024, placing it among the small fraction of global manufacturers that meet the non-recourse project finance threshold used by institutional lenders. In terms of institutional footprint and financial bankability, AIKO holds a significantly stronger position.
AIKO's core differentiation is its proprietary N-type All Back Contact technology, which relocates all conductors to the rear of the cell and has consistently topped global module efficiency rankings since early 2023, with mass-production cell efficiencies reported above 27% and module-level efficiencies approaching 25%. The company targets premium residential rooftops and increasingly commercial rooftop applications, offering a 30-year performance warranty on most of its panel families. Just Solar's product catalog, by contrast, is oriented toward OEM export customers - distributors and project developers seeking standard or custom-specified modules across a range of power classes - and the company does not appear to have a widely reviewed proprietary cell technology differentiated from mainstream offerings.
For a typical buyer in 2025, AIKO is the more compelling default when efficiency, long-term bankability, and installer support matter. Its real-world performance data, Tier 1 classification, and growing international installer network provide greater assurance than Just Solar can currently demonstrate in independent reviews. Just Solar may appeal to procurement teams seeking flexible OEM supply at volume with straightforward specifications, but buyers who need independently verified performance track records will find AIKO's documented standing the stronger choice.
Generated by Claude Sonnet · 2026-05-17
Other brand comparisons
Shop prices: See 1 Just Solar offer · See 170 AIKO 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.