Last updated: March 2026
Canadian Solar is one of the world’s largest solar panel manufacturers and one of the few companies from the early 2000s solar era that not only survived but thrived. Founded in Canada but manufacturing primarily in China, Canadian Solar has grown from a startup to a multi-billion dollar global company with panels installed on every continent. This guide covers the full company history, legacy model specifications, and current product lineup.
Canadian Solar Company History
- 2001 — Canadian Solar Inc. founded by Dr. Shawn Qu in Guelph, Ontario, Canada. Initially headquartered in Kitchener, Ontario.
- 2001–2006 — Establishes manufacturing in China while maintaining Canadian corporate headquarters. Early products sold primarily to the North American and European markets.
- 2006 — Canadian Solar lists on NASDAQ (CSIQ), raising capital for manufacturing expansion
- 2006–2010 — Rapid growth; establishes operations in Germany, Japan, South Korea, Italy, and the US. Expands Chinese manufacturing capacity aggressively.
- 2013 — Canadian Solar reaches 1GW annual production capacity, becoming one of the world’s top 5 solar manufacturers
- 2015–2018 — Diversifies into solar project development (EPC and IPP), reducing dependence on volatile panel sales margins
- 2020–2024 — Continues expansion; launches HiKu and TOPCon product lines; establishes manufacturing in Southeast Asia (Vietnam, Thailand) and considers US manufacturing
- 2026 — Canadian Solar remains one of the world’s largest module suppliers, with production exceeding 20GW annually. Listed on NASDAQ and trading actively.
Is Canadian Solar Still in Business?
Absolutely yes — Canadian Solar is one of the most financially healthy large solar manufacturers as of 2026. Unlike many peers that went bankrupt or were absorbed, Canadian Solar successfully diversified from pure panel manufacturing into solar project development, which provides more stable revenue. They are listed on NASDAQ (CSIQ) and are Bloomberg NEF Tier 1 rated every year.
Canadian Solar Panel Product Lines: Legacy to Current
CS5 / CS6 Series — Legacy Polycrystalline (2005–2018)
These were Canadian Solar’s backbone residential and commercial products during the polycrystalline era. Widely installed in North America, Europe, and Australia.
| Model | Watts | Voc | Vmp | Isc | Imp | Efficiency |
|---|---|---|---|---|---|---|
| CS6P-220P | 220W | 36.8V | 29.8V | 8.20A | 7.38A | 13.5% |
| CS6P-225P | 225W | 37.0V | 30.0V | 8.37A | 7.50A | 13.8% |
| CS6P-230P | 230W | 37.1V | 30.1V | 8.54A | 7.64A | 14.1% |
| CS6P-235P | 235W | 37.3V | 30.3V | 8.68A | 7.76A | 14.4% |
| CS6P-240P | 240W | 37.4V | 30.4V | 8.87A | 7.89A | 14.7% |
| CS6K-270P | 270W | 38.2V | 31.1V | 9.42A | 8.68A | 16.5% |
| CS6K-285P | 285W | 38.6V | 31.4V | 9.79A | 9.08A | 17.4% |
HiKu Series — Monocrystalline PERC (2018–2023)
Canadian Solar’s transition to high-power mono PERC panels with larger wafer formats (M6, M10).
| Model | Watts | Efficiency | Wafer Size | Era |
|---|---|---|---|---|
| CS3U-375MS (HiKu) | 375W | 19.3% | M6 | 2019–2021 |
| CS3N-390MS (HiKu) | 390W | 20.1% | M10 | 2021–2022 |
| CS6R-410MS (HiKu6) | 410W | 21.1% | M10 | 2022–2023 |
HiHero Series — HJT Technology (2022–Present)
Canadian Solar’s premium heterojunction technology panel, their most efficient product as of 2026.
| Model | Watts | Efficiency | Temp Coeff | 25yr Warranty |
|---|---|---|---|---|
| CS6R-430H-AG (HiHero) | 430W | 22.1% | -0.26%/°C | 92% |
| CS6R-445H-AG (HiHero) | 445W | 22.9% | -0.26%/°C | 92% |
TOPBiHiKu7 / TOPCon Series (2023–Present)
Canadian Solar’s mainstream 2024–2026 product line uses N-type TOPCon technology, offering high efficiency at a more competitive price than HJT.
| Model | Watts | Efficiency | Technology |
|---|---|---|---|
| CS6W-440TB-AG | 440W | 22.5% | N-type TOPCon bifacial |
| CS7N-655TB-AGF | 655W | 22.7% | N-type TOPCon bifacial (commercial) |
Canadian Solar CS6P-230P — Detailed Specifications
The CS6P-230P is one of the most widely installed Canadian Solar models, found in residential systems across North America and Europe installed between 2012 and 2016:
- Rated power: 230W (±5W)
- Voc: 37.1V
- Vmp: 30.1V
- Isc: 8.54A
- Imp: 7.64A
- Module efficiency: 14.1%
- Cell type: Polycrystalline silicon, 60 cells
- Dimensions: 1638 × 982 × 40mm
- Weight: ~18.5 kg
- Temperature coefficient (Pmax): -0.41%/°C
- Connector: MC4
- Warranty: 10-year product warranty, 25-year linear power warranty (80% at 25 years)
Frequently Asked Questions
Is Canadian Solar a good brand?
Yes — Canadian Solar is consistently rated as a Bloomberg NEF Tier 1 manufacturer and is considered a reliable, quality solar brand. While not positioned as a premium brand (like REC Alpha or SunPower Maxeon), Canadian Solar offers strong value in the mid-market segment. The company’s financial stability (publicly listed, profitable, diversified) means warranty claims are actually enforceable — a real advantage over defunct brands.
What is the Canadian Solar CS6P-230P specification?
The CS6P-230P is a 230W polycrystalline silicon panel: Voc 37.1V, Vmp 30.1V, Isc 8.54A, Imp 7.64A, efficiency 14.1%. 60 cells, dimensions 1638 × 982 × 40mm, MC4 connectors. This was one of Canadian Solar’s most popular North American residential models from approximately 2012–2016.
Where is Canadian Solar manufactured?
Canadian Solar’s panel manufacturing is primarily located in China, with additional facilities in Vietnam and Thailand. Despite the Canadian name, manufacturing moved to lower-cost Asian locations early in the company’s history. The corporate headquarters remains in Guelph, Ontario, Canada. As of 2026, Canadian Solar is also exploring US manufacturing capacity given trade policy developments.
What is Canadian Solar’s best panel in 2026?
Canadian Solar’s premium panel is the HiHero series (430–445W, ~22–23% efficiency) using heterojunction (HJT) technology with a 92% 25-year power warranty. For value-oriented installations, the TOPBiHiKu7 TOPCon series (440–660W, ~22.5% efficiency) offers excellent performance at a more competitive price point.
