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

# Heckert Solar vs JA Solar

JA Solar has the broader catalog (504 vs 155 models). JA Solar leads on peak efficiency at 24.80%.


## The two companies


| Attribute | Heckert Solar | JA Solar |
| --- | --- | --- |
| Country | Germany | China |
| Headquarters | Chemnitz | Beijing |
| Founded | 1992 | 2005 |
| Employees | 201 | 37,289 |
| Annual capacity | 0.8 GW/year | 100+ GW/year |
| Tier 1 |  | yes |
| Listed |  | SZSE: 002459 |
| Website | [https://www.heckertsolar.com/en/](https://www.heckertsolar.com/en/) | [https://www.jasolar.com](https://www.jasolar.com) |

Heckert Solar is a German company based in Chemnitz, Saxony, specializing in the development, production and distribution of solar modules. Founded in 1992, the company has become a leading supplier of photovoltaic products, serving customers in over 120 countries. They manufacture high-quality, durable, and efficient...

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 | Heckert Solar | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 155 | 504 | +349 |
| Max Power | 715 W | 740 W | +25 W |
| Avg Power | 420 W | 456 W | +36 W |


## Efficiency


| Measure | Heckert Solar | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.30% | 24.80% | +0.50 pp |
| Avg Efficiency | 21.43% | 21.13% | +0.29 pp |


## Reliability & Warranty


| Measure | Heckert Solar | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.318%/°C | -0.322%/°C | +0.004 |
| Bifacial Share | 65 (42%) | 238 (47%) | +5 pp |
| Avg Warranty | 27.1 yrs | 27.9 yrs | +0.8 yr |


## Efficiency distribution

Heckert Solar skews to higher efficiency: 17% of lineup is 23%+


| Efficiency band | Heckert Solar | JA Solar |
| --- | --- | --- |
| \<20% | 27 (17.4%) | 112 (22.2%) |
| 20-21% | 54 (34.8%) | 99 (19.6%) |
| 21-22% | 3 (1.9%) | 112 (22.2%) |
| 22-23% | 44 (28.4%) | 107 (21.2%) |
| 23%+ | 27 (17.4%) | 74 (14.7%) |


## Power distribution

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


| Power band | Heckert Solar | JA Solar |
| --- | --- | --- |
| \<400W | 64 (41.3%) | 142 (28.2%) |
| 400-499W | 83 (53.5%) | 173 (34.3%) |
| 600-699W | 4 (2.6%) | 60 (11.9%) |
| 700W+ | 4 (2.6%) | 9 (1.8%) |
| 500-599W | 0 | 120 (23.8%) |


## Cell technology

Dominant cell tech: **TOPCon** (34%)

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


| Technology | Heckert Solar | JA Solar |
| --- | --- | --- |
| TOPCon | 52 (33.5%) | 146 (29.0%) |
| PERC | 46 (29.7%) | 247 (49.0%) |
| Unknown | 35 (22.6%) | 16 (3.2%) |
| Back Contact | 20 (12.9%) | 0 |
| N-type | 2 (1.3%) | 90 (17.9%) |
| HJT | 0 | 5 (1.0%) |


## Top panels, Heckert Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ZEUS 2.2 715](https://comparepv.com/panel/heckert-solar-zeus-2-2-715) | 715 | 23.0 | -0.280 | Monocrystalline |
| 2 | [ZEUS 2.2-715](https://comparepv.com/panel/heckert-solar-zeus-2-2-715-1) | 715 | 23.0 | -0.280 | Monocrystalline |
| 3 | [ZEUS 2.2 710](https://comparepv.com/panel/heckert-solar-zeus-2-2-710) | 710 | 22.9 | -0.280 | Monocrystalline |
| 4 | [ZEUS 2.2-710](https://comparepv.com/panel/heckert-solar-zeus-2-2-710-1) | 710 | 22.9 | -0.280 | Monocrystalline |
| 5 | [ZEUS 2.1-640](https://comparepv.com/panel/heckert-solar-zeus-2-1-640) | 640 | 23.7 | -0.280 | Monocrystalline |
| 6 | [ZEUS 2.1 640W](https://comparepv.com/panel/heckert-solar-zeus-2-1-640w) | 640 | 23.7 | -0.280 | Monocrystalline |
| 7 | [ZEUS 2.1-635](https://comparepv.com/panel/heckert-solar-zeus-2-1-635) | 635 | 23.5 | -0.280 | Monocrystalline |
| 8 | [ZEUS 2.1 635W](https://comparepv.com/panel/heckert-solar-zeus-2-1-635w) | 635 | 23.5 | -0.280 | Monocrystalline |
| 9 | [ZEUS 3.0+ 108 490WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-490wp) | 490 | 24.0 | -0.260 | Monocrystalline |
| 10 | [ZEUS 3.0+ 108 490WP PERFORMANCE](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-490wp-performance) | 490 | 24.0 | -0.260 | 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

Heckert Solar is a German solar module manufacturer headquartered in Chemnitz, founded in 1992 and employing approximately 201 people. The company produces its panels exclusively in Germany, making it one of the last meaningful European manufacturers maintaining domestic production at scale, with a total production capacity of 0.8 GW. Its market positioning is firmly premium and regional, targeting quality-conscious buyers in Germany and neighboring European markets. JA Solar, by contrast, was founded in 2005 in China and has grown into one of the world's largest solar manufacturers, with over 37,000 employees, a production capacity exceeding 100 GW, and a listing on the Shenzhen Stock Exchange (SZSE). The company holds Tier 1 bankable status, a designation assigned by major financial institutions that facilitates project-level debt financing and signals strong long-term viability.

Both manufacturers lead their respective portfolios with PERC cell technology - representing 63.9% of Heckert's range and 52.1% of JA Solar's - but their portfolios diverge sharply in scope and power class. Heckert offers 72 panel models with a maximum output of 450 Wp and a peak efficiency of 22.5%, averaging around 387.5 Wp and 20.4% efficiency across the range. JA Solar's catalog spans 524 models reaching up to 740 Wp and 24.4% peak efficiency, with an average output of roughly 441.7 Wp and average efficiency of 20.9%. JA Solar's substantially higher bifacial share (44.3% versus 6.9%) and better average temperature coefficient (-0.323%/°C versus -0.344%/°C) make it well suited for utility-scale ground-mount and large commercial C&I installations where energy yield and balance-of-system cost optimization are priorities. Heckert's made-in-Germany credentials, focused residential and mid-commercial portfolio, and strong proximity-based installer support make it a compelling option for rooftop residential projects and smaller commercial installations across European markets.

For international buyers choosing between the two, the decision turns on project scale and procurement priorities. Heckert Solar is the stronger fit for residential and small-to-mid commercial projects in Germany, Poland, France, and Benelux - markets where European manufacturing provenance, reliable warranty administration, and "Made in Germany" branding carry weight with end customers. JA Solar is the more versatile choice for utility-scale and large C&I projects: its Tier 1 status eases bank financing, its high-power modules reduce per-watt installation costs, and its average warranty of 27.9 years - compared to 25.3 years for Heckert - offers developers additional long-term performance assurance at globally competitive price points.

Written by claude-sonnet from the figures above.


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

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