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

# Heckert vs JA Solar

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


## The two companies


| Attribute | Heckert | JA Solar |
| --- | --- | --- |
| Country | Germany | China |
| Headquarters | Chemnitz | Beijing |
| Founded | 2001 | 2005 |
| Employees | 200-500 | 37,289 |
| Annual capacity | 0.9 GW/year | 100+ GW/year |
| Tier 1 |  | yes |
| Listed |  | SZSE: 002459 |
| Website | [https://www.heckertsolar.com](https://www.heckertsolar.com) | [https://www.jasolar.com](https://www.jasolar.com) |

Heckert Solar GmbH is a German manufacturer of high-performance photovoltaic modules, producing exclusively at its facilities in Chemnitz and Langenwetzendorf, Saxony. The company is one of the few remaining solar module producers with full 'Made in Germany' manufacturing, operating with a nominal production capacity...

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 | 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 | Heckert | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | - | 24.80% |  |
| Avg Efficiency | - | 21.13% |  |


## Reliability & Warranty


| Measure | Heckert | 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 | Heckert | 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 | Heckert | 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 | Heckert | 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

Heckert Solar is a German manufacturer headquartered in Chemnitz, Saxony, founded in 1992. It holds the distinction of being the last solar module maker with continuous production on German soil, following the exit of Solarwatt and Meyer Burger in 2024. Its annual production capacity sits around 800 MWp, a deliberately modest scale that keeps it a niche specialist rather than a volume player. Heckert has not been rated in the PVEL Module Reliability Scorecard, limiting its formal bankability credentials with international lenders, though it enjoys strong recognition in the German retail and commercial installer market. JA Solar, founded in 2005 and headquartered in Beijing, operates at an entirely different scale - the company surpassed 100 GW of manufacturing capacity and shipped roughly 75-79 GW in 2024 alone. It holds a AAA rating in PV ModuleTech bankability reports and is consistently listed as a Bloomberg New Energy Finance Tier 1 manufacturer, giving it the strongest possible institutional footprint for project financing globally.

In terms of product families, Heckert offers three lines: the NeMo series using standard PERC cells up to around 405 Wp aimed at German residential rooftops, the Apollon series using n-type TOPCon technology up to 440 Wp, and the Zeus series featuring bifacial glass-glass n-type TOPCon construction up to 480 Wp with a 30-year product and performance warranty on newer models. JA Solar's Deep Blue 4.0, the current mainstream residential line, uses TOPCon cells at efficiencies up to around 23 percent and output between 435 and 460 W, while the forthcoming DeepBlue 5.0 targets utility-scale and commercial projects in the 640-670 W range. Both companies have therefore converged on n-type TOPCon as their premium cell technology.

For most buyers outside Germany, JA Solar is the stronger default in 2025 - its AAA bankability, global service network, and competitive pricing make it easier to finance, insure, and warranty-claim on large installations. Heckert is genuinely differentiated for European buyers who place premium value on locally manufactured modules, shorter supply chains, or Made-in-Germany certification requirements, and its Zeus series tests well independently. The two brands are not interchangeable in market positioning: Heckert is a premium-niche European option while JA Solar is a globally scaled, bankable workhorse.

\---LINKS---

\- https://www.pv-tech.org/ja-solar-moves-to-aaa-rating-in-latest-pv-moduletech-bankability-ratings-report/ \| JA Solar moves to AAA-Rating in PV ModuleTech Bankability Ratings \| article

\- https://www.solarreviews.com/blog/ja-solar-panels \| JA Solar Panels 2025 Expert Review - SolarReviews \| review

\- https://comparepv.com/reviews/heckert-solar \| Heckert Solar Panels Review 2026: Pros, Cons and Specs - ComparePV \| review

\- https://www.pv-tech.org/industry-updates/ja-solar-launches-next-generation-deepblue-5-0-n-type-topcon-module/ \| JA Solar launches next-generation DeepBlue 5.0 n-Type TOPCon module \| article

\- https://business-saxony.com/en/environmentally-friendly-solar-module-production-in-germany \| Environmentally Friendly Solar Module Production in Germany - Business Saxony \| article

Sources:

\- \[JA Solar moves to AAA-Rating in PV ModuleTech Bankability Ratings\](https://www.pv-tech.org/ja-solar-moves-to-aaa-rating-in-latest-pv-moduletech-bankability-ratings-report/)

\- \[JA Solar Panels 2025 Expert Review - SolarReviews\](https://www.solarreviews.com/blog/ja-solar-panels)

\- \[Heckert Solar Panels Review 2026 - ComparePV\](https://comparepv.com/reviews/heckert-solar)

\- \[JA Solar launches next-generation DeepBlue 5.0 n-Type TOPCon module - PV Tech\](https://www.pv-tech.org/industry-updates/ja-solar-launches-next-generation-deepblue-5-0-n-type-topcon-module/)

\- \[Environmentally Friendly Solar Module Production in Germany - Business Saxony\](https://business-saxony.com/en/environmentally-friendly-solar-module-production-in-germany)

Written by claude-sonnet from the figures above.


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