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

# Bauer Solar vs JA Solar

JA Solar has the broader catalog (504 vs 6 models). JA Solar leads on peak efficiency at 24.80%. Bauer Solar leans bifacial (100% of lineup).


## The two companies


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


## Catalog & Power


| Measure | Bauer Solar | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 6 | 504 | +498 |
| Max Power | 475 W | 740 W | +265 W |
| Avg Power | 458 W | 456 W | +1 W |


## Efficiency


| Measure | Bauer Solar | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 22.50% | 24.80% | +2.30 pp |
| Avg Efficiency | 21.99% | 21.13% | +0.86 pp |


## Reliability & Warranty


| Measure | Bauer Solar | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.295%/°C | -0.322%/°C | +0.027 |
| Bifacial Share | 6 (100%) | 238 (47%) | +53 pp |
| Avg Warranty | 30.0 yrs | 27.9 yrs | +2.1 yr |


## Efficiency distribution

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


| Efficiency band | Bauer Solar | JA Solar |
| --- | --- | --- |
| 21-22% | 3 (50.0%) | 112 (22.2%) |
| 22-23% | 3 (50.0%) | 107 (21.2%) |
| \<20% | 0 | 112 (22.2%) |
| 20-21% | 0 | 99 (19.6%) |
| 23%+ | 0 | 74 (14.7%) |


## Power distribution

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


| Power band | Bauer Solar | JA Solar |
| --- | --- | --- |
| 400-499W | 6 (100.0%) | 173 (34.3%) |
| \<400W | 0 | 142 (28.2%) |
| 500-599W | 0 | 120 (23.8%) |
| 600-699W | 0 | 60 (11.9%) |
| 700W+ | 0 | 9 (1.8%) |


## Cell technology

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

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


| Technology | Bauer Solar | JA Solar |
| --- | --- | --- |
| TOPCon | 6 (100.0%) | 146 (29.0%) |
| PERC | 0 | 247 (49.0%) |
| N-type | 0 | 90 (17.9%) |
| Unknown | 0 | 16 (3.2%) |
| HJT | 0 | 5 (1.0%) |


## Top panels, Bauer Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [BS-475-120M10NHBB-GG](https://comparepv.com/panel/bauer-solar-bs-475-120m10nhbb-gg) | 475 | 21.9 | -0.300 | Monocrystalline |
| 2 | [BS-470-120M10NHBB-GG](https://comparepv.com/panel/bauer-solar-bs-470-120m10nhbb-gg) | 470 | 21.7 | -0.300 | Monocrystalline |
| 3 | [BS-465-120M10NHBB-GG](https://comparepv.com/panel/bauer-solar-bs-465-120m10nhbb-gg) | 465 | 21.5 | -0.300 | Monocrystalline |
| 4 | [BS-450-108M10HBT-GG](https://comparepv.com/panel/bauer-solar-bs-450-108m10hbt-gg) | 450 | 22.5 | -0.290 | Monocrystalline |
| 5 | [BS-445-108M10HBT-GG](https://comparepv.com/panel/bauer-solar-bs-445-108m10hbt-gg) | 445 | 22.3 | -0.290 | Monocrystalline |
| 6 | [BS-440-108M10HBT-GG](https://comparepv.com/panel/bauer-solar-bs-440-108m10hbt-gg) | 440 | 22.0 | -0.290 | Monocrystalline |


## 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

Bauer Solar is a family-owned German photovoltaic manufacturer active since approximately 2003, positioning itself at the premium end of the European solar market. Although it does not hold a Tier 1 rating on the Bloomberg NEF list, the company has earned the German CrefoZert certification for exceptional creditworthiness - a distinction held by roughly 2% of companies in Germany - and its modules carry additional reinsurance backing from Munich RE. Its catalog is intentionally compact at 6 models, but fully uniform: every panel uses N-type TOPCon bifacial technology in a glass-glass construction, with an average output of 457.5 Wp and an average module efficiency of approximately 21.99%. JA Solar, founded in 2005 and headquartered in China with shares listed on the Shenzhen Stock Exchange (SZSE), is one of the world's leading solar manufacturers, with a production capacity exceeding 100 GW, over 37,000 employees, and formal Tier 1 bankable status. The company offers an extensive portfolio of 524 module variants; PERC cells account for approximately 52% of the lineup, with a growing TOPCon presence through the Deep Blue 4.0 series. JA Solar's catalog reaches a peak module efficiency of 24.4% and a maximum rated output of 740 Wp.

Bauer Solar's fully TOPCon bifacial glass-glass lineup is purpose-built for long-term durability and consistent yield, making it a strong fit for residential rooftop installs and smaller commercial projects where build quality and warranty longevity are the primary decision criteria. Its average temperature coefficient of -0.295%/°C compares favorably to JA Solar's portfolio average of -0.3226%/°C, translating to better real-world output on warm days. The 30-year product and performance warranty - reinsured by Munich RE - sets a high bar for homeowner confidence. JA Solar's Tier 1 status and manufacturing scale make it the dominant option for utility-scale ground-mount projects and commercial C&I installations where bank financing or EPC contracts require certified manufacturer status. Its broad product range, spanning compact residential modules to high-power 740 Wp formats, offers unmatched flexibility across project scales and procurement requirements.

For international buyers choosing between the two, the decision hinges largely on project type and financing context. Bauer Solar suits premium residential and small commercial buyers who value European provenance, a uniform TOPCon-only portfolio, glass-glass construction, and a Munich RE-backed 30-year guarantee. JA Solar is the practical choice for large-scale procurement, Tier 1-required financing, and any project where broad module selection or competitive per-watt pricing at volume drives the specification.

Written by claude-sonnet from the figures above.


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

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