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

# Heckert Solar vs Phono Solar

Phono Solar has the broader catalog (174 vs 155 models). Heckert Solar leads on peak efficiency at 24.30%.


## The two companies


| Attribute | Heckert Solar | Phono Solar |
| --- | --- | --- |
| Country | Germany | China |
| Headquarters | Chemnitz | Nanjing |
| Founded | 1992 | 2004 |
| Employees | 201 | 13000+ |
| Annual capacity | 0.8 GW/year | 3-4 GW/year |
| Tier 1 |  | yes |
| Listed |  |  |
| Website | [https://www.heckertsolar.com/en/](https://www.heckertsolar.com/en/) | [https://www.phonosolar.com](https://www.phonosolar.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...

Phono Solar Technology Co., Ltd. specializes in the research, development, and manufacture of photovoltaic solar panels and is a global provider of solar products and services. The company is affiliated with SUMEC Group, a subsidiary of China National Machinery Industry Corporation (SINOMACH). Phono Solar has been...


## Catalog & Power


| Measure | Heckert Solar | Phono Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 155 | 174 | +19 |
| Max Power | 715 W | 730 W | +15 W |
| Avg Power | 420 W | 515 W | +95 W |


## Efficiency


| Measure | Heckert Solar | Phono Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.30% | 23.50% | +0.80 pp |
| Avg Efficiency | 21.43% | 21.77% | +0.35 pp |


## Reliability & Warranty


| Measure | Heckert Solar | Phono Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.318%/°C | -0.306%/°C | +0.012 |
| Bifacial Share | 65 (42%) | 74 (43%) | +1 pp |
| Avg Warranty | 27.1 yrs | 27.1 yrs | +0.0 yr |


## Efficiency distribution

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


| Efficiency band | Heckert Solar | Phono Solar |
| --- | --- | --- |
| \<20% | 27 (17.4%) | 3 (1.7%) |
| 20-21% | 54 (34.8%) | 37 (21.3%) |
| 21-22% | 3 (1.9%) | 53 (30.5%) |
| 22-23% | 44 (28.4%) | 62 (35.6%) |
| 23%+ | 27 (17.4%) | 19 (10.9%) |


## Power distribution

Phono Solar offers more 600W+ panels (20% of lineup)


| Power band | Heckert Solar | Phono Solar |
| --- | --- | --- |
| \<400W | 64 (41.3%) | 10 (5.7%) |
| 400-499W | 83 (53.5%) | 78 (44.8%) |
| 600-699W | 4 (2.6%) | 23 (13.2%) |
| 700W+ | 4 (2.6%) | 12 (6.9%) |
| 500-599W | 0 | 51 (29.3%) |


## Cell technology

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

Dominant cell tech: **PERC** (37%)


| Technology | Heckert Solar | Phono Solar |
| --- | --- | --- |
| TOPCon | 52 (33.5%) | 53 (30.5%) |
| PERC | 46 (29.7%) | 65 (37.4%) |
| Unknown | 35 (22.6%) | 0 |
| Back Contact | 20 (12.9%) | 1 (0.6%) |
| N-type | 2 (1.3%) | 50 (28.7%) |
| HJT | 0 | 5 (2.9%) |


## 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, Phono Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [PS730M13GFH-22/WSHW](https://comparepv.com/panel/phono-solar-co-ltd-phono-solar-technology-co-ltd-ps730m13gfh-22-wshw) | 730 | 23.5 | -0.240 | Monocrystalline |
| 2 | [NS-730MH-132](https://comparepv.com/panel/phono-solar-ns-730mh-132) | 730 | 23.5 | -0.290 | Monocrystalline |
| 3 | [PS725M13GFH-22/WSHW](https://comparepv.com/panel/phono-solar-co-ltd-phono-solar-technology-co-ltd-ps725m13gfh-22-wshw) | 725 | 23.3 | -0.240 | Monocrystalline |
| 4 | [PS720M13GFH-22/WSHW](https://comparepv.com/panel/phono-solar-co-ltd-phono-solar-technology-co-ltd-ps720m13gfh-22-wshw) | 720 | 23.2 | -0.240 | Monocrystalline |
| 5 | [NS-720MH-132](https://comparepv.com/panel/phono-solar-ns-720mh-132) | 720 | 23.2 | -0.290 | Monocrystalline |
| 6 | [PS715M13GFH-22/WSHW](https://comparepv.com/panel/phono-solar-co-ltd-phono-solar-technology-co-ltd-ps715m13gfh-22-wshw) | 715 | 23.0 | -0.240 | Monocrystalline |
| 7 | [PS710M13GFH-22/WNH](https://comparepv.com/panel/phono-solar-technology-co-ltd-ps710m13gfh-22-wnh) | 710 | 22.9 | -0.290 | Monocrystalline |
| 8 | [PS710M13GFH-22/WSHW](https://comparepv.com/panel/phono-solar-co-ltd-phono-solar-technology-co-ltd-ps710m13gfh-22-wshw) | 710 | 22.9 | -0.240 | Monocrystalline |
| 9 | [NS-710MH-132](https://comparepv.com/panel/phono-solar-ns-710mh-132) | 710 | 22.9 | -0.290 | Monocrystalline |
| 10 | [PS705M13GFH-22/WNH](https://comparepv.com/panel/phono-solar-technology-co-ltd-ps705m13gfh-22-wnh) | 705 | 22.7 | -0.290 | Monocrystalline |


## Summary

Heckert Solar is a German module manufacturer headquartered in Chemnitz, founded in 1992, with all production kept in Germany, which shortens its supply chain and supports a high degree of vertical integration. The company has earned BloombergNEF Tier 1 status for five consecutive years, marking its seventeenth such recognition as of early 2026, and was ranked in Wood Mackenzie's 2025 global top 20 module manufacturers list as the only Europe-headquartered brand on it. Phono Solar, part of China's SUMEC Group under the state-owned SINOMACH conglomerate, has been active in solar since 2004 and began mass module production in 2008; it now runs roughly 3 GW of annual capacity and has shipped over 20 GW of modules cumulatively, while holding uninterrupted Tier 1 status since 2014. On bankability the two are broadly comparable, though Heckert carries more institutional weight in Europe while Phono's footprint is larger on a global manufacturing scale.

Heckert Solar focuses primarily on the European market, supplying panels for residential rooftop systems and small to mid-sized commercial installations, with its newer Apollon series bringing n-type TOPCon cell technology into German-based production. Phono Solar offers a broader and more varied product range, spanning modules from roughly 320W up to 730W, including its flagship Quasar back-contact bifacial module rated above 23 percent efficiency, making it a fit for both rooftop projects and utility-scale ground-mount solar farms.

For a typical buyer, whether residential or commercial, both brands represent solid, bankable choices with no meaningful gap in reliability. Heckert Solar tends to appeal to buyers who value European manufacturing and a shorter supply chain, while Phono Solar often competes more aggressively on price and product range at a similar quality tier. In practice the differences are more about origin and positioning than technical superiority, and the right pick usually comes down to local distributor availability and warranty terms rather than the brand itself.

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


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

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