Canadian Solar vs Just Solar - solar panel manufacturer comparison
Canadian Solar has the broader catalog (292 vs 42 models). Canadian Solar leads on peak efficiency at 24.40%. Canadian Solar leans bifacial (46% 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
Canadian Solar Inc. is a global renewable energy company founded in 2001. Headquartered in Kitchener, Ontario, it manufactures solar PV modules and provides battery energy storage solutions. The company also develops utility-scale solar power and battery energy storage projects.
- Founded
- 2001
- Headquarters
- Kitchener, Canada
- Annual capacity
- 51 GW/year
- Employees
- 17,113
- Listed
- NASDAQ: CSIQ
- 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
Just Solar skews to higher efficiency: 33% of lineup is 23%+
Canadian Solar offers more 600W+ panels (24% of lineup)
Dominant cell tech: <strong>PERC</strong> (67%)
Dominant cell tech: <strong>TOPCon</strong> (52%)
The flagships
Written summary
Canadian Solar is a Canadian manufacturer headquartered in Guelph, Ontario, founded in 2001 by Dr. Shawn Qu and publicly listed on Nasdaq since 2006 (CSIQ). It is widely recognized as one of the most bankable Tier 1 manufacturers globally, again named to S&P Global Energy's Premier Tier 1 Cleantech Companies list in 2026, with module production capacity targeted at roughly 51-56 GW per year by end of 2026, including an expanding factory footprint in Texas. Just Solar Group is a Chinese manufacturer founded in 2010, operating factories in Zhejiang along with additional production lines in Europe and Vietnam, with capacity around 1.2 GW per year - a substantially smaller scale, and without a confirmed listing on the BloombergNEF Tier 1 list. In terms of institutional footprint and financial bankability, Canadian Solar holds a clear edge.
Canadian Solar's portfolio spans residential rooftop panels through to utility-scale and commercial and industrial (C&I) modules, built around TOPCon (TOPHiKu and TOPBiHiKu series) and HJT (HiHero series) cell technology, with modules reaching up to 690 W output and hail-resistance testing aimed at utility-scale deployments. Just Solar's lineup centers on monocrystalline half-cut modules, such as the JST450M line sold through European distributors, typically backed by a 10-year product warranty and a 25-year linear power warranty, and is positioned mainly toward residential and small commercial rooftop installations.
For a typical buyer, whether a homeowner or a developer of larger commercial and utility projects, Canadian Solar is the safer default choice given its confirmed Tier 1 bankability, long operating history, and global manufacturing scale, which generally translates into easier financing and stronger long-term warranty assurance. Just Solar can be a reasonable budget-oriented option for smaller residential installations, provided the buyer accepts a smaller manufacturer scale and a less documented bankability track record - the two brands are not fully interchangeable, and the right choice depends on project size and risk tolerance.
Generated by Claude Sonnet 5 · 2026-09-11
Other brand comparisons
Shop prices: See 39 Canadian Solar offers · See 1 Just Solar offer
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.