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

# Heckert Solar vs Talesun

Heckert Solar has the broader catalog (155 vs 144 models). Talesun leads on peak efficiency at 24.80%. Talesun leans bifacial (59% of lineup).


## The two companies


| Attribute | Heckert Solar | Talesun |
| --- | --- | --- |
| Country | Germany | China |
| Headquarters | Chemnitz | Suzhou |
| Founded | 1992 | 2010 |
| Employees | 201 | 501 |
| Annual capacity | 0.8 GW/year | 5+ GW/year |
| Tier 1 |  | yes |
| Listed |  |  |
| Website | [https://www.heckertsolar.com/en/](https://www.heckertsolar.com/en/) | [http://www.talesun.com](http://www.talesun.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...

Talesun Solar, a subsidiary of Zhongli Group, is a leading global photovoltaic manufacturer specializing in the development, manufacturing, and delivery of high-quality solar modules and integrated PV energy solutions. The company provides clean and affordable PV energy solutions for residential, commercial, and...


## Catalog & Power


| Measure | Heckert Solar | Talesun | Margin |
| --- | --- | --- | --- |
| Panel Models | 155 | 144 | +11 |
| Max Power | 715 W | 710 W | +5 W |
| Avg Power | 420 W | 564 W | +144 W |


## Efficiency


| Measure | Heckert Solar | Talesun | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.30% | 24.80% | +0.50 pp |
| Avg Efficiency | 21.43% | 22.14% | +0.71 pp |


## Reliability & Warranty


| Measure | Heckert Solar | Talesun | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.318%/°C | -0.304%/°C | +0.014 |
| Bifacial Share | 65 (42%) | 85 (59%) | +17 pp |
| Avg Warranty | 27.1 yrs | 28.8 yrs | +1.7 yr |


## Efficiency distribution

Talesun skews to higher efficiency: 28% of lineup is 23%+


| Efficiency band | Heckert Solar | Talesun |
| --- | --- | --- |
| \<20% | 27 (17.4%) | 5 (3.5%) |
| 20-21% | 54 (34.8%) | 24 (16.7%) |
| 21-22% | 3 (1.9%) | 32 (22.2%) |
| 22-23% | 44 (28.4%) | 43 (29.9%) |
| 23%+ | 27 (17.4%) | 40 (27.8%) |


## Power distribution

Talesun offers more 600W+ panels (49% of lineup)


| Power band | Heckert Solar | Talesun |
| --- | --- | --- |
| \<400W | 64 (41.3%) | 8 (5.6%) |
| 400-499W | 83 (53.5%) | 32 (22.2%) |
| 600-699W | 4 (2.6%) | 67 (46.5%) |
| 700W+ | 4 (2.6%) | 3 (2.1%) |
| 500-599W | 0 | 34 (23.6%) |


## Cell technology

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

Dominant cell tech: **TOPCon** (44%)


| Technology | Heckert Solar | Talesun |
| --- | --- | --- |
| TOPCon | 52 (33.5%) | 63 (43.8%) |
| PERC | 46 (29.7%) | 51 (35.4%) |
| Unknown | 35 (22.6%) | 5 (3.5%) |
| Back Contact | 20 (12.9%) | 0 |
| N-type | 2 (1.3%) | 17 (11.8%) |
| HJT | 0 | 8 (5.6%) |


## 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, Talesun


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [TM8G66M-710](https://comparepv.com/panel/talesun-tm8g66m-710) | 710 | 22.9 | -0.290 | Monocrystalline |
| 2 | [TM8G66M-705](https://comparepv.com/panel/talesun-tm8g66m-705) | 705 | 22.7 | -0.290 | Monocrystalline |
| 3 | [TM8G66M-700](https://comparepv.com/panel/talesun-tm8g66m-700) | 700 | 22.5 | -0.290 | Monocrystalline |
| 4 | [TM8G66M-695](https://comparepv.com/panel/talesun-tm8g66m-695) | 695 | 22.4 | -0.290 | Monocrystalline |
| 5 | [TM8G66M-690](https://comparepv.com/panel/talesun-tm8g66m-690) | 690 | 22.2 | -0.290 | Monocrystalline |
| 6 | [TD8G66M/670W](https://comparepv.com/panel/talesun-td8g66m-670w) | 670 | 21.6 | -0.340 | Monocrystalline |
| 7 | [TP8F66M-670](https://comparepv.com/panel/talesun-tp8f66m-670) | 670 | 21.6 | -0.340 | Monocrystalline |
| 8 | [CIPRO-TN9C72M(H)-670](https://comparepv.com/panel/talesun-cipro-tn9c72m-h-670) | 670 | 24.8 | -0.260 | Monocrystalline |
| 9 | [TD8G66M/665W](https://comparepv.com/panel/talesun-td8g66m-665w) | 665 | 21.4 | -0.340 | Monocrystalline |
| 10 | [TP8F66M-665](https://comparepv.com/panel/talesun-tp8f66m-665) | 665 | 21.4 | -0.340 | Monocrystalline |


## Summary

Heckert Solar is a German manufacturer headquartered in Chemnitz, operating since 2001 and shipping its first module in 2003. Production remains exclusively in Germany, split between Chemnitz and a newer plant in Langenwetzendorf, Thuringia, with current nameplate capacity around 800-900 MW per year, though a consortium has announced plans to expand Langenwetzendorf to 2.8 GW. No confirmed BloombergNEF Tier 1 listing for Heckert Solar appears in public sources. Talesun, by contrast, is a Chinese manufacturer based in Suzhou, Jiangsu province, part of the Zhongli Group, founded around 2009-2010, with annual production capacity cited at anywhere from 5 to 10+ GW and cumulative module shipments around 36 GW. Talesun has been confirmed on BloombergNEF's Tier 1 module maker list as recently as Q1 2025, giving it a more clearly documented institutional footprint and substantially larger global scale than Heckert Solar.

The two companies' product lines reflect different market focuses. Heckert Solar targets the German and broader European rooftop segment - residential and small commercial installations - with its NeMo series (monofacial, PERC technology), Zeus series (bifacial, n-type TOPCon or back-contact cells), and the newer Apollon line. Talesun covers a wider range of applications, including residential, rooftop, and utility-scale ground-mount projects, with n-type monocrystalline modules spanning TOPCon, HJT, PERC, and BC cell technologies, with recent high-power models reaching 500 to 735 W.

For a typical buyer, the choice depends on project scale and priorities: Heckert Solar suits residential or small commercial rooftop buyers in Europe who value German manufacturing and local supply chains, while Talesun's confirmed Tier 1 bankability and larger production scale make it a stronger default for utility-scale or commercial projects where financing institutions require documented Tier 1 status. The brands are not straightforward substitutes - Heckert offers a smaller, Europe-centric footprint, while Talesun offers global scale and formal bankability credentials.

Written by claude-sonnet-5 from the figures above.


## Other comparisons

- [Heckert Solar vs A.B. Energy](https://comparepv.com/heckert-solar-vs-a-b-energy)
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- [Heckert Solar vs AEET](https://comparepv.com/heckert-solar-vs-aeet)
- [AIKO vs Talesun](https://comparepv.com/aiko-vs-talesun)
- [Heckert Solar vs AKCOME](https://comparepv.com/heckert-solar-vs-akcome)
- [ARTsolar vs Talesun](https://comparepv.com/artsolar-vs-talesun)


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

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