---
title: "Canadian Solar vs ET Solar - Brand Comparison | ComparePV"
description: "Compare Canadian Solar vs ET Solar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/canadian-solar-vs-et-solar"
---

# Canadian Solar vs ET Solar

Canadian Solar has the broader catalog (292 vs 10 models). Canadian Solar leads on peak efficiency at 24.40%.


## The two companies


| Attribute | Canadian Solar | ET Solar |
| --- | --- | --- |
| Country | Canada | China |
| Headquarters | Kitchener | Nanjing |
| Founded | 2001 | 2005 |
| Employees | 17,113 |  |
| Annual capacity | 51 GW/year |  |
| Tier 1 | yes | no |
| Listed | NASDAQ: CSIQ |  |
| Website | [https://www.canadiansolar.com](https://www.canadiansolar.com) | [https://www.etsolar.com](https://www.etsolar.com) |

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.


## Catalog & Power


| Measure | Canadian Solar | ET Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 292 | 10 | +282 |
| Max Power | 730 W | 555 W | +175 W |
| Avg Power | 472 W | 542 W | +71 W |


## Efficiency


| Measure | Canadian Solar | ET Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.40% | 21.40% | +3.00 pp |
| Avg Efficiency | 20.66% | 20.99% | +0.33 pp |


## Reliability & Warranty


| Measure | Canadian Solar | ET Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.331%/°C | -0.340%/°C | +0.009 |
| Bifacial Share | 133 (46%) | 5 (50%) | +4 pp |
| Avg Warranty | 28.2 yrs | 27.5 yrs | +0.7 yr |


## Efficiency distribution

Canadian Solar skews to higher efficiency: 13% of lineup is 23%+


| Efficiency band | Canadian Solar | ET Solar |
| --- | --- | --- |
| \<20% | 128 (43.8%) | 0 |
| 20-21% | 36 (12.3%) | 5 (50.0%) |
| 21-22% | 41 (14.0%) | 5 (50.0%) |
| 22-23% | 50 (17.1%) | 0 |
| 23%+ | 37 (12.7%) | 0 |


## Power distribution

Canadian Solar offers more 600W+ panels (24% of lineup)


| Power band | Canadian Solar | ET Solar |
| --- | --- | --- |
| \<400W | 104 (35.6%) | 0 |
| 400-499W | 72 (24.7%) | 0 |
| 500-599W | 45 (15.4%) | 10 (100.0%) |
| 600-699W | 64 (21.9%) | 0 |
| 700W+ | 7 (2.4%) | 0 |


## Cell technology

Dominant cell tech: **PERC** (67%)

Dominant cell tech: **PERC** (100%)


| Technology | Canadian Solar | ET Solar |
| --- | --- | --- |
| PERC | 195 (66.8%) | 10 (100.0%) |
| TOPCon | 85 (29.1%) | 0 |
| HJT | 12 (4.1%) | 0 |


## Top panels, Canadian Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [CS7N-730TB-AG](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-730tb-ag) | 730 | 23.5 | -0.290 | Monocrystalline |
| 2 | [CS7N-725TB-AG](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-725tb-ag) | 725 | 23.3 | -0.290 | Monocrystalline |
| 3 | [CS7N-720TB-AG](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-720tb-ag) | 720 | 23.2 | -0.290 | Monocrystalline |
| 4 | [CS7N-715TB-AG](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-715tb-ag) | 715 | 23.0 | -0.290 | Monocrystalline |
| 5 | [CS7N-710TB-AG](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-710tb-ag) | 710 | 22.9 | -0.290 | Monocrystalline |
| 6 | [CS7N-705TB-AG](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-705tb-ag) | 705 | 22.7 | -0.290 | Monocrystalline |
| 7 | [CS7N-700TB-AG](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-700tb-ag) | 700 | 22.5 | -0.290 | Monocrystalline |
| 8 | [CS7N-695TB-AG](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-695tb-ag) | 695 | 22.4 | -0.290 | Monocrystalline |
| 9 | [CS7N-690TB-AG](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-690tb-ag) | 690 | 22.2 | -0.290 | Monocrystalline |
| 10 | [CS7N-675MS](https://comparepv.com/panel/csi-solar-co-ltd-canadian-solar-cs7n-675ms) | 675 | 21.7 | -0.340 | Monocrystalline |


## Top panels, ET Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ET-M772BH555WW/WB](https://comparepv.com/panel/et-solar-et-m772bh555ww-wb) | 555 | 21.4 | -0.340 | Monocrystalline |
| 2 | [ET-M772BH550TW/TB](https://comparepv.com/panel/et-solar-et-m772bh550tw-tb) | 550 | 21.3 | -0.340 | Monocrystalline |
| 3 | [ET-M772BH550WW/WB](https://comparepv.com/panel/et-solar-et-m772bh550ww-wb) | 550 | 21.3 | -0.340 | Monocrystalline |
| 4 | [ET-M772BH545TW/TB](https://comparepv.com/panel/et-solar-et-m772bh545tw-tb) | 545 | 21.1 | -0.340 | Monocrystalline |
| 5 | [ET-M772BH545WW/WB](https://comparepv.com/panel/et-solar-et-m772bh545ww-wb) | 545 | 21.1 | -0.340 | Monocrystalline |
| 6 | [ET-M772BH540TW/TB](https://comparepv.com/panel/et-solar-et-m772bh540tw-tb) | 540 | 20.9 | -0.340 | Monocrystalline |
| 7 | [ET-M772BH540WW/WB](https://comparepv.com/panel/et-solar-et-m772bh540ww-wb) | 540 | 20.9 | -0.340 | Monocrystalline |
| 8 | [ET-M772BH535TW/TB](https://comparepv.com/panel/et-solar-et-m772bh535tw-tb) | 535 | 20.7 | -0.340 | Monocrystalline |
| 9 | [ET-M772BH535WW/WB](https://comparepv.com/panel/et-solar-et-m772bh535ww-wb) | 535 | 20.7 | -0.340 | Monocrystalline |
| 10 | [ET-M772BH530TW/TB](https://comparepv.com/panel/et-solar-et-m772bh530tw-tb) | 530 | 20.5 | -0.340 | Monocrystalline |


## Summary

Canadian Solar was founded in 2001 by Dr. Shawn Qu and now operates its global headquarters in Kitchener, Ontario, while manufacturing is concentrated mainly in China and other parts of Asia along with growing US capacity. The company consistently ranks at the top of BloombergNEF's Tier 1 bankability list and is widely regarded as one of the most bankable module makers globally, with annual module production capacity exceeding 50 GW. ET Solar, founded in 2005 and headquartered in Nanjing, also appears on Tier 1 lists but operates at a much smaller scale, with reported capacity in the low single-digit GW range, placing it in a markedly different institutional tier than Canadian Solar.

Canadian Solar's product range spans residential rooftop panels, commercial and industrial installations, and utility-scale ground-mount projects, built predominantly on N-type TOPCon cells (its CS7N series) with an expanding HJT lineup under the Low Carbon HiHero brand. ET Solar's catalog leans more heavily on PERC technology with some N-type offerings, targeting smaller rooftop and commercial installations rather than large utility projects, and its technology roadmap is less publicly documented than that of its larger rival. For international buyers, Canadian Solar modules are far more commonly specified on utility and C&I projects, whereas ET Solar tends to surface in smaller distributor and installer channels.

For a typical buyer, whether a residential installer or a utility-scale developer, Canadian Solar is generally the safer default given its stronger balance sheet, longer uninterrupted supply track record, and clearer bankability credentials. Independent reviews and installer reports also flag recurring warranty-support issues with ET Solar, including difficulty reaching the company after panel failures, which further favors the more established brand for projects requiring long-term bank financing or warranty confidence.

Written by claude-sonnet-5 from the figures above.


## Other comparisons

- [Canadian Solar vs A.B. Energy](https://comparepv.com/canadian-solar-vs-a-b-energy)
- [AE Solar vs ET Solar](https://comparepv.com/ae-solar-vs-et-solar)
- [Canadian Solar vs AEET](https://comparepv.com/canadian-solar-vs-aeet)
- [AIKO vs ET Solar](https://comparepv.com/aiko-vs-et-solar)
- [Canadian Solar vs AKCOME](https://comparepv.com/canadian-solar-vs-akcome)
- [ARTsolar vs ET Solar](https://comparepv.com/artsolar-vs-et-solar)


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Source: https://comparepv.com/canadian-solar-vs-et-solar

Not in this file, on the page: the distributions above drawn as charts.