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

# JA Solar vs Jetion

JA Solar has the broader catalog (504 vs 95 models). JA Solar leads on peak efficiency at 24.80%. Jetion leans bifacial (92% of lineup).


## The two companies


| Attribute | JA Solar | Jetion |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Jiangyin, Wuxi, Jiangsu |
| Founded | 2005 | 2004 |
| Employees | 37,289 | 1500-3000 |
| Annual capacity | 100+ GW/year | 2.5 GW/year |
| Tier 1 | yes | yes |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [http://www.jetionsolar.com](http://www.jetionsolar.com) |

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...

Jetion Solar specializes in the research, development, production, and sales of solar PV products. The company has achieved significant accomplishments in terms of production capacity and innovative designs. Jetion Solar joined CNBM (China National Building Materials Group Corporation) in 2014.


## Catalog & Power


| Measure | JA Solar | Jetion | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 95 | +409 |
| Max Power | 740 W | 800 W | +60 W |
| Avg Power | 456 W | 583 W | +127 W |


## Efficiency


| Measure | JA Solar | Jetion | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 24.30% | +0.50 pp |
| Avg Efficiency | 21.13% | 22.61% | +1.47 pp |


## Reliability & Warranty


| Measure | JA Solar | Jetion | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.274%/°C | +0.048 |
| Bifacial Share | 238 (47%) | 87 (92%) | +44 pp |
| Avg Warranty | 27.9 yrs | 29.3 yrs | +1.4 yr |


## Efficiency distribution

Jetion skews to higher efficiency: 34% of lineup is 23%+


| Efficiency band | JA Solar | Jetion |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 1 (1.1%) |
| 21-22% | 112 (22.2%) | 17 (17.9%) |
| 22-23% | 107 (21.2%) | 45 (47.4%) |
| 23%+ | 74 (14.7%) | 32 (33.7%) |


## Power distribution

Jetion offers more 600W+ panels (44% of lineup)


| Power band | JA Solar | Jetion |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 26 (27.4%) |
| 500-599W | 120 (23.8%) | 27 (28.4%) |
| 600-699W | 60 (11.9%) | 20 (21.1%) |
| 700W+ | 9 (1.8%) | 22 (23.2%) |


## Cell technology

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

Dominant cell tech: **TOPCon** (60%)


| Technology | JA Solar | Jetion |
| --- | --- | --- |
| PERC | 247 (49.0%) | 3 (3.2%) |
| TOPCon | 146 (29.0%) | 57 (60.0%) |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 0 |
| HJT | 5 (1.0%) | 35 (36.8%) |


## 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 |


## Top panels, Jetion


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [JT800SXt(B)](https://comparepv.com/panel/jetion-jt800sxt-b) | 800 | 23.7 | -0.290 | Monocrystalline |
| 2 | [JT795SXt(B)](https://comparepv.com/panel/jetion-jt795sxt-b) | 795 | 23.5 | -0.290 | Monocrystalline |
| 3 | [JT790SXt(B)](https://comparepv.com/panel/jetion-jt790sxt-b) | 790 | 23.4 | -0.290 | Monocrystalline |
| 4 | [JT785SXt(B)](https://comparepv.com/panel/jetion-jt785sxt-b) | 785 | 23.2 | -0.290 | Monocrystalline |
| 5 | [JT780SXt(B)](https://comparepv.com/panel/jetion-jt780sxt-b) | 780 | 23.1 | -0.290 | Monocrystalline |
| 6 | [JT775SXt(B)](https://comparepv.com/panel/jetion-jt775sxt-b) | 775 | 22.9 | -0.290 | Monocrystalline |
| 7 | [JT755SLk(B)](https://comparepv.com/panel/jetion-jt755slk-b) | 755 | 24.3 | -0.240 | Monocrystalline |
| 8 | [JT750SLk(B)](https://comparepv.com/panel/jetion-jt750slk-b) | 750 | 24.1 | -0.240 | Monocrystalline |
| 9 | [JT745SLk(B)](https://comparepv.com/panel/jetion-jt745slk-b) | 745 | 24.0 | -0.240 | Monocrystalline |
| 10 | [JT740SLk(B)](https://comparepv.com/panel/jetion-jt740slk-b) | 740 | 23.8 | -0.240 | Monocrystalline |


## Summary

JA Solar and Jetion are both Chinese photovoltaic manufacturers holding Tier 1 bankable status, but they occupy vastly different positions in the global solar industry. JA Solar was founded in 2005 and has grown into one of the world's largest module manufacturers, with over 37,000 employees and a production capacity exceeding 100 GW - in Wood Mackenzie's H1 2025 Global Solar Module Manufacturer Ranking it tied with Trinasolar for first place. Jetion, founded one year earlier in 2004 and operating under the China National Building Materials Group (CNBM), is a significantly smaller company with 1,500 to 3,000 employees and a module production capacity of 2.5 GW. While both are Tier 1 rated, JA Solar's global distribution network and brand recognition - including consistent recognition as a PVEL Top Performer, most recently in 2025 - give it considerably broader market reach across Europe, the Americas, and Asia-Pacific.

On the technology side, the two manufacturers have taken contrasting strategic paths. JA Solar offers a portfolio of 524 panel models built primarily on PERC cell technology (52.1% of the range), with average efficiency at 20.87% and a maximum of 24.4%, while actively transitioning its newer lines toward n-type TOPCon. Its deep catalogue suits virtually every application - residential rooftop installs, utility-scale ground-mount projects, and commercial C&I deployments - and its broad availability makes it the default choice for volume installers. Jetion has concentrated its entire five-model portfolio on HJT (heterojunction) technology, delivering a higher average efficiency of 22.4%, a superior temperature coefficient of -0.24%/°C against JA Solar's -0.32%/°C, 100% bifacial panels, and a 30-year linear performance warranty. These attributes make Jetion panels particularly well suited to space-constrained commercial rooftops and high-performance residential installs where output per square metre and long-term degradation matter most.

For international buyers choosing between the two, the decision turns on project scale and technology priorities. JA Solar is the lower-risk, higher-availability choice for any installer managing diverse project types who values a proven supply chain and extensive after-sales support. Jetion is the stronger pick for buyers who specifically want HJT technology with an above-average temperature coefficient and an extended warranty, and who are comfortable working with a smaller supplier offering a narrower but technically focused product line.

Written by claude-sonnet from the figures above.


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- [AIKO vs Jetion](https://comparepv.com/aiko-vs-jetion)
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- [ARTsolar vs Jetion](https://comparepv.com/artsolar-vs-jetion)


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Source: https://comparepv.com/ja-solar-vs-jetion

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