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

# JA Solar vs Q-SUN Solar

JA Solar has the broader catalog (504 vs 111 models). JA Solar leads on peak efficiency at 24.80%. Q-SUN Solar leans bifacial (68% of lineup).


## The two companies


| Attribute | JA Solar | Q-SUN Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing |  |
| Founded | 2005 | 2014 |
| Employees | 37,289 |  |
| Annual capacity | 100+ GW/year |  |
| Tier 1 | yes | no |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.q-sunsolar.com](https://www.q-sunsolar.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...

Qn-SOLAR officially launched its global PV business in 2022. The company is headquartered in Shanghai, China, and has four manufacturing bases in China. As a professional and integrated company, Qn-SOLAR operates in various fields of PV upstream and downstream, achieving an annual production capacity of 20GW PV cells...


## Catalog & Power


| Measure | JA Solar | Q-SUN Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 111 | +393 |
| Max Power | 740 W | 730 W | +10 W |
| Avg Power | 456 W | 543 W | +87 W |


## Efficiency


| Measure | JA Solar | Q-SUN Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.70% | +1.10 pp |
| Avg Efficiency | 21.13% | 21.91% | +0.77 pp |


## Reliability & Warranty


| Measure | JA Solar | Q-SUN Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.303%/°C | +0.019 |
| Bifacial Share | 238 (47%) | 76 (68%) | +21 pp |
| Avg Warranty | 27.9 yrs | 28.7 yrs | +0.8 yr |


## Efficiency distribution

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


| Efficiency band | JA Solar | Q-SUN Solar |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 15 (13.5%) |
| 21-22% | 112 (22.2%) | 39 (35.1%) |
| 22-23% | 107 (21.2%) | 45 (40.5%) |
| 23%+ | 74 (14.7%) | 12 (10.8%) |


## Power distribution

Q-SUN Solar offers more 600W+ panels (30% of lineup)


| Power band | JA Solar | Q-SUN Solar |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 1 (0.9%) |
| 400-499W | 173 (34.3%) | 40 (36.0%) |
| 500-599W | 120 (23.8%) | 37 (33.3%) |
| 600-699W | 60 (11.9%) | 25 (22.5%) |
| 700W+ | 9 (1.8%) | 8 (7.2%) |


## Cell technology

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

Dominant cell tech: **N-type** (42%)


| Technology | JA Solar | Q-SUN Solar |
| --- | --- | --- |
| PERC | 247 (49.0%) | 39 (35.1%) |
| TOPCon | 146 (29.0%) | 20 (18.0%) |
| N-type | 90 (17.9%) | 47 (42.3%) |
| Unknown | 16 (3.2%) | 0 |
| HJT | 5 (1.0%) | 5 (4.5%) |


## 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, Q-SUN Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [QN-730HJT-01](https://comparepv.com/panel/q-sun-solar-qn-730hjt-01) | 730 | 23.5 | -0.240 | Monocrystalline |
| 2 | [QN-725HJT-01](https://comparepv.com/panel/q-sun-solar-qn-725hjt-01) | 725 | 23.5 | -0.240 | Monocrystalline |
| 3 | [QN-720HJT-01](https://comparepv.com/panel/q-sun-solar-qn-720hjt-01) | 720 | 23.3 | -0.240 | Monocrystalline |
| 4 | [QN-715HJT-01](https://comparepv.com/panel/q-sun-solar-qn-715hjt-01) | 715 | 23.2 | -0.240 | Monocrystalline |
| 5 | [QN-710HJT-01](https://comparepv.com/panel/q-sun-solar-qn-710hjt-01) | 710 | 23.0 | -0.240 | Monocrystalline |
| 6 | [QN-710HT-01](https://comparepv.com/panel/q-sun-solar-qn-710ht-01) | 710 | 22.9 | -0.300 | Monocrystalline |
| 7 | [QN-705HT-01](https://comparepv.com/panel/q-sun-solar-qn-705ht-01) | 705 | 22.7 | -0.300 | Monocrystalline |
| 8 | [QN-700HT-01](https://comparepv.com/panel/q-sun-solar-qn-700ht-01) | 700 | 22.5 | -0.300 | Monocrystalline |
| 9 | [QN-695HT-01](https://comparepv.com/panel/q-sun-solar-qn-695ht-01) | 695 | 22.4 | -0.300 | Monocrystalline |
| 10 | [QN-690HT-01](https://comparepv.com/panel/q-sun-solar-qn-690ht-01) | 690 | 22.2 | -0.300 | Monocrystalline |


## Summary

JA Solar and Q-SUN Solar are both Chinese photovoltaic module manufacturers, but they occupy very different positions in the global solar market. JA Solar was founded in 2005 and has grown into one of the industry's largest players, with production capacity exceeding 100 GW, a workforce of over 37,000 employees, and a public listing on the Shenzhen Stock Exchange (SZSE). It holds Tier 1 bankable status as recognized by S&P Global Commodity Insights, confirming its eligibility for bank-financed projects worldwide and placing it consistently among the top two manufacturers globally by shipment volume. Q-SUN Solar, established in 2014 in Chuzhou, Anhui Province, is a significantly smaller manufacturer delivering approximately 4 GW annually and does not currently appear on Tier 1 bankability lists. This distinction carries real implications for project financing, as installers and developers working with institutional lenders will generally find it easier to secure funding for projects built around JA Solar modules.

In terms of technology and portfolio breadth, both manufacturers demonstrate meaningful strengths. JA Solar's 524-model lineup is dominated by PERC technology (52.1% of portfolio), reaching up to 740 Wp and a maximum efficiency of 24.4%, with an average efficiency of 20.87% across all models. Its extensive range makes it equally well-suited for residential rooftop installs, large utility-scale ground-mount projects, and commercial C&I applications. Q-SUN Solar, with 114 models, leans more heavily toward N-type technology (41.2% of portfolio) and posts a higher average module efficiency of 21.89%, along with a better average temperature coefficient of -0.304%/°C versus -0.323%/°C for JA Solar, and a significantly higher share of bifacial panels at 66.7% versus 44.3%. These attributes make Q-SUN's lineup particularly competitive for high-yield utility-scale and C&I projects where per-watt output and thermal performance at elevated temperatures are priorities.

For international buyers selecting between the two, the decision ultimately hinges on risk tolerance and project requirements. JA Solar is the lower-risk, better-documented option - its Tier 1 status, PVEL Top Performer recognition, and deep global supply chain make it a defensible choice for virtually any project type. Q-SUN Solar offers a technically competitive and increasingly certified alternative with modern N-type modules and strong bifacial representation, but buyers should carefully factor in its non-Tier-1 standing when project financing or long-term bankability is a key consideration.

Written by claude-sonnet from the figures above.


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Source: https://comparepv.com/ja-solar-vs-q-sun-solar

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