---
title: "JA Solar vs Zun Power - Brand Comparison | ComparePV"
description: "Compare JA Solar vs Zun Power solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/ja-solar-vs-zun-power"
---

# JA Solar vs Zun Power

JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | Zun Power |
| --- | --- | --- |
| Country | China | Canada |
| Headquarters | Beijing | Montreal |
| Founded | 2005 | 2014 |
| Employees | 37,289 |  |
| Annual capacity | 100+ GW/year |  |
| Tier 1 | yes |  |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://zunpower.ca/](https://zunpower.ca/) |

JA Solar is a global leader in the manufacturing of high-performance photovoltaic products. Founded in 2005, the company designs, develops, manufactures, and sells solar cells and modules. JA Solar's products are used in ground-mounted power plants, commercial & industrial rooftop PV systems, and residential rooftop...

Zun Power is a leading solar panel manufacturer based in Montreal, Canada. They specialize in high-efficiency photovoltaic panels under their own brand, GMA Solar, designed for commercial, industrial, agricultural, and institutional projects. Zun Power's manufacturing operations are fully based in Montreal and...


## Catalog & Power


| Measure | JA Solar | Zun Power | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 0 | +504 |
| Max Power | 740 W | 0 W | +740 W |
| Avg Power | 456 W | 0 W | +456 W |


## Efficiency


| Measure | JA Solar | Zun Power | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | - |  |
| Avg Efficiency | 21.13% | - |  |


## Reliability & Warranty


| Measure | JA Solar | Zun Power | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | - |  |
| Bifacial Share | 238 (47%) | 0 (0%) | +47 pp |
| Avg Warranty | 27.9 yrs | - |  |


## Efficiency distribution

JA Solar skews to higher efficiency: 15% of lineup is 23%+


| Efficiency band | JA Solar | Zun Power |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 0 |
| 22-23% | 107 (21.2%) | 0 |
| 23%+ | 74 (14.7%) | 0 |


## Power distribution

JA Solar offers more 600W+ panels (14% of lineup)


| Power band | JA Solar | Zun Power |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 0 |
| 500-599W | 120 (23.8%) | 0 |
| 600-699W | 60 (11.9%) | 0 |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

Dominant cell tech: **PERC** (49%)


| Technology | JA Solar | Zun Power |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 0 |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 0 |
| HJT | 5 (1.0%) | 0 |


## Top panels, JA Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [JAM66D46-740/LB](https://comparepv.com/panel/ja-solar-jam66d46-740-lb) | 740 | 23.8 | -0.290 | Monocrystalline |
| 2 | [JAM66D46-735/LB](https://comparepv.com/panel/ja-solar-jam66d46-735-lb) | 735 | 23.7 | -0.290 | Monocrystalline |
| 3 | [JAM66D46-730/LB](https://comparepv.com/panel/ja-solar-jam66d46-730-lb) | 730 | 23.5 | -0.290 | Monocrystalline |
| 4 | [JAM66D46-725/LB](https://comparepv.com/panel/ja-solar-jam66d46-725-lb) | 725 | 23.3 | -0.290 | Monocrystalline |
| 5 | [JAM66D46-720/LB](https://comparepv.com/panel/ja-solar-jam66d46-720-lb) | 720 | 23.2 | -0.290 | Monocrystalline |
| 6 | [JAM66D46-715/LB](https://comparepv.com/panel/ja-solar-jam66d46-715-lb) | 715 | 23.0 | -0.290 | Monocrystalline |
| 7 | [JAM66D46-710/LB](https://comparepv.com/panel/ja-solar-jam66d46-710-lb) | 710 | 22.9 | -0.290 | Monocrystalline |
| 8 | [JAM66D46-705/LB](https://comparepv.com/panel/ja-solar-jam66d46-705-lb) | 705 | 22.7 | -0.290 | Monocrystalline |
| 9 | [JAM66D46-700/LB](https://comparepv.com/panel/ja-solar-jam66d46-700-lb) | 700 | 22.5 | -0.290 | Monocrystalline |
| 10 | [JAM66D46-695/LB](https://comparepv.com/panel/ja-solar-jam66d46-695-lb) | 695 | 22.4 | -0.290 | Monocrystalline |


## Summary

JA Solar was founded in 2005 in China and is listed on the Shenzhen Stock Exchange (SZSE). With over 37,000 employees and a module production capacity exceeding 100 GW, it jointly topped Wood Mackenzie's Global Solar Module Manufacturer Ranking for the first half of 2025 alongside Trinasolar, cementing its place among the world's leading photovoltaic suppliers. The company holds Tier 1 bankable status as recognized by S&P Global Commodity Insights in 2025, confirming its eligibility for project finance by major financial institutions. Zun Power is a considerably smaller manufacturer founded in 2014 and headquartered in Montreal, Canada, operating also under the GMA Solar brand. It targets the North American market and holds CSA and TUV Rheinland certifications, but does not appear on major Tier 1 bankability lists and has no registered panel models in leading international industry databases.

JA Solar's portfolio of 524 panel models covers a wide range of applications and power classes. The dominant cell technology is PERC at approximately 52% of models, complemented by a growing TOPCon lineup that pushes peak efficiency to 24.4% and maximum output to 740 Wp. Bifacial modules represent roughly 44% of the portfolio, making them well-suited for ground-mount utility-scale installations that benefit from rear-side irradiance gains. An average product warranty of nearly 28 years, combined with a tenth consecutive Top Performer recognition in the PVEL 2025 Scorecard, reinforces JA Solar's suitability for residential rooftop installs, commercial C&I projects, and large utility-scale ground-mount developments worldwide. Zun Power, with a stated product range spanning 10 W to 700 W and technologies including PERC and TOPCon, positions itself as a local North American partner for commercial, agricultural, and institutional projects, but the complete absence of independently verified panel data makes direct technical comparison impossible.

For international buyers outside North America, JA Solar is the clear choice given its verified field performance record, global supply chain presence, Tier 1 bankability, and an extensive portfolio suited to virtually any project type or financing structure. Zun Power may be a relevant option for buyers specifically seeking a Canadian-certified local manufacturer for North American projects, but its very limited independent market data and absence from major module registries make meaningful evaluation difficult for buyers operating in other regions.

Written by claude-sonnet from the figures above.


## Other comparisons

- [JA Solar vs A.B. Energy](https://comparepv.com/ja-solar-vs-a-b-energy)
- [AE Solar vs Zun Power](https://comparepv.com/ae-solar-vs-zun-power)
- [JA Solar vs AEET](https://comparepv.com/ja-solar-vs-aeet)
- [AIKO vs Zun Power](https://comparepv.com/aiko-vs-zun-power)
- [JA Solar vs AKCOME](https://comparepv.com/ja-solar-vs-akcome)
- [ARTsolar vs Zun Power](https://comparepv.com/artsolar-vs-zun-power)


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Source: https://comparepv.com/ja-solar-vs-zun-power

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