Bisol vs Canadian Solar - solar panel manufacturer comparison
Canadian Solar has the broader catalog (292 vs 12 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
BISOL Group is a European manufacturer of high-quality photovoltaic modules headquartered in Prebold, Slovenia. Founded in 2004, it is considered Europe's leading authentic solar module producer with a production capacity of 750 MW and products distributed in over 120 countries. The company operates debt-free and has...
- Founded
- 2004
- Headquarters
- Prebold, Slovenia
- Annual capacity
- <1 GW/year
- Employees
- 200-500
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
Bisol skews to higher efficiency: 33% of lineup is 23%+
Canadian Solar offers more 600W+ panels (24% of lineup)
Dominant cell tech: <strong>PERC</strong> (58%)
Dominant cell tech: <strong>PERC</strong> (67%)
The flagships
Written summary
Bisol is a Slovenian module manufacturer founded in 2004 by Dr. Uros Merc, producing panels domestically in Slovenia under a genuine "Made in Europe" label. Its annual production capacity sits around 750 MW, making it one of the largest authentic European panel makers, though this is modest next to global-scale competitors. Bisol has publicly stated it does not pursue BloombergNEF Tier 1 listing, arguing the ranking measures bankability rather than technical quality, even though with more than 2 GW of modules installed worldwide it would meet the underlying bankability thresholds. Canadian Solar, founded in 2001 in Guelph, Ontario by Dr. Shawn Qu, operates at a dramatically larger scale, with module manufacturing capacity reported in the tens of gigawatts per year, a long-standing position on the BNEF Tier 1 list, a Nasdaq listing, and offices across dozens of countries. Canadian Solar clearly holds the stronger institutional and financial footprint of the two.
Bisol's lineup centers on monocrystalline panels from roughly 340 W to 580 W, built on a mix of PERC and increasingly TOPCon cells, aimed mainly at residential and smaller commercial rooftop installations across Europe, where buyers value shorter supply chains and verified European origin. Canadian Solar's portfolio is considerably broader, spanning residential modules, C&I products, and high-power TOPCon 3.0 utility-scale panels reaching up to 670 W and 24.8 percent efficiency, alongside anti-hail reinforced-glass modules and residential battery storage systems like the EP Cube. This breadth lets Canadian Solar serve everything from rooftop homes to multi-megawatt solar farms.
For a typical international buyer, the choice comes down to priorities: Bisol suits installers and homeowners who specifically want a smaller, European-manufactured product with local traceability, while Canadian Solar's scale, Tier 1 standing, and wider product range make it the safer default for larger or more demanding projects. Both brands are credible and well-regarded, but they are not fully interchangeable given the gap in manufacturing scale and market strategy.
Generated by Claude Sonnet 5 · 2026-10-01
Other brand comparisons
Shop prices: See 12 Bisol offers · See 39 Canadian Solar 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.