Canadian Solar vs Resun Solar - solar panel manufacturer comparison
Canadian Solar has the broader catalog (292 vs 236 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
Resun Solar Energy Co., Ltd. specializes in developing and manufacturing high-quality, cost-effective photovoltaic solar modules. With factories accredited by ISO9001 & 14001, their panels are certified by TUV, IEC61215, IEC61730, and other international quality systems. The company's sales network spans over 80...
- Founded
- 2007
- Headquarters
- Suzhou, China
- Annual capacity
- 1 GW/year
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
Canadian Solar skews to higher efficiency: 13% of lineup is 23%+
Resun Solar offers more 600W+ panels (29% of lineup)
Dominant cell tech: <strong>PERC</strong> (67%)
Dominant cell tech: <strong>TOPCon</strong> (66%)
The flagships
Written summary
Canadian Solar is a Canadian manufacturer headquartered in Kitchener, Ontario, founded in 2001 and publicly listed on NASDAQ since 2006. It appears on S&P Global Commodity Insights' Tier 1 Cleantech Companies list for both PV modules and battery energy storage, runs annual production capacity of roughly 61 GW, and has shipped close to 165 GW of modules cumulatively, placing it among the top five solar manufacturers worldwide. Resun Solar is a Chinese manufacturer based in Changzhou, Jiangsu province, founded in 2005, operating at a much smaller scale with reported annual capacity in the 1-3 GW range, and it does not appear on published Tier 1 bankability lists. In terms of institutional footprint and financial track record, Canadian Solar holds a clear edge.
Canadian Solar's lineup spans TOPCon-based n-type modules (the TOPHiKu6 and TOPBiHiKu7 series) and heterojunction HJT panels (the HiHero series), covering residential rooftop, commercial and industrial, and utility-scale ground-mount projects. Resun Solar focuses mainly on monocrystalline modules, including some TOPCon cells, in the roughly 420 W to 590 W range, with average efficiency around 22.3 percent, TUV, UL and CE certification, and a standard 30-year performance warranty, and it is positioned primarily for residential and smaller commercial installations rather than large utility projects.
For a typical international buyer prioritizing bankability, financing access, and long-term supplier stability, Canadian Solar is the safer default given its Tier 1 status and manufacturing scale. Resun Solar can be a reasonable lower-cost option for smaller residential jobs, but installers and buyers should verify warranty backing and supply continuity more carefully, since the brand lacks a comparable bankability track record.
Generated by Claude Sonnet 5 · 2026-07-31
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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.