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

# Atmosfera Polska vs JA Solar

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


## The two companies


| Attribute | Atmosfera Polska | JA Solar |
| --- | --- | --- |
| Country | Poland | China |
| Headquarters | Krakow | Beijing |
| Founded | 2014 | 2005 |
| Employees |  | 37,289 |
| Annual capacity |  | 100+ GW/year |
| Tier 1 |  | yes |
| Listed |  | SZSE: 002459 |
| Website | [https://www.atmo-sfera.eu](https://www.atmo-sfera.eu) | [https://www.jasolar.com](https://www.jasolar.com) |

Atmosfera Polska Sp. z o.o. is a solar energy equipment distributor that offers solutions and technical support, representing over 25 global manufacturers. They provide project sales, technical supervision and management services with a team of specialists. The company has warehouses in ports of Slovenia, Netherlands...

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...


## Catalog & Power


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


## Efficiency


| Measure | Atmosfera Polska | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | - | 24.80% |  |
| Avg Efficiency | - | 21.13% |  |


## Reliability & Warranty


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


## Efficiency distribution

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


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


## Power distribution

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


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


## Cell technology

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


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


## 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

Atmosfera Polska is a Polish entity founded in 2014 that carries no verified panel listings in available industry databases - zero registered models, no peak power figures, and no technical specifications. Independent searches across pv-magazine.com, pvtech.org, and Polish-language industry portals returned no product reviews or module data, strongly indicating the company operates as a small local installer or distributor rather than a panel manufacturer in the conventional sense. JA Solar, by contrast, is one of the world's largest solar module producers, founded in 2005 and headquartered in China. It employs over 37,000 people, trades on the Shenzhen Stock Exchange (SZSE), and has been recognized as a Tier 1 bankable supplier by S&P Global Commodity Insights, with a declared production capacity exceeding 100 GW and cumulative global shipments approaching 300 GW as of 2025.

JA Solar's portfolio of 524 verified module models spans a wide power range, with peak output reaching 740 Wp and an average of approximately 441.7 Wp per module. The dominant cell technology is PERC, accounting for 52.1% of the lineup, though TOPCon-based products are gaining ground and push maximum panel efficiency to 24.4% - with an average across the portfolio of around 20.9%. The average temperature coefficient of Pmax sits at approximately -0.32%/°C, reflecting solid thermal performance suitable for varying climates. Bifacial modules represent 44.3% of the range, making JA Solar well-suited for utility-scale ground-mount projects and commercial C&I installations where rear-side irradiance gain matters. The average product warranty of nearly 28 years, combined with Tier 1 bankability, eases project finance for larger developments. Atmosfera Polska, lacking any documented module portfolio, cannot be meaningfully evaluated on technical or commercial grounds.

For international buyers, the comparison is effectively one-sided: JA Solar offers a thoroughly documented, globally audited product range with strong bankability credentials for residential rooftop installs, commercial C&I projects, and utility-scale ground-mount farms alike. Atmosfera Polska, in its current state of public documentation, does not present sufficient evidence to be considered a competing module manufacturer.

Written by claude-sonnet from the figures above.


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Source: https://comparepv.com/atmosfera-polska-vs-ja-solar