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

# AE Solar vs ET Solar

AE Solar has the broader catalog (646 vs 10 models). AE Solar leads on peak efficiency at 24.43%. AE Solar leans bifacial (63% of lineup).


## The two companies


| Attribute | AE Solar | ET Solar |
| --- | --- | --- |
| Country | Germany | China |
| Headquarters | Gersthofen | Nanjing |
| Founded | 2003 | 2005 |
| Employees | 501-1000 |  |
| Annual capacity | 2+ GW/year |  |
| Tier 1 | yes | no |
| Listed |  |  |
| Website | [https://ae-solar.com](https://ae-solar.com) | [https://www.etsolar.com](https://www.etsolar.com) |

AE Solar is a German Tier 1 manufacturer of high-efficiency photovoltaic (PV) modules. The company specializes in producing durable and innovative solar panels with German engineering standards, offering solutions for residential, commercial, and utility-scale applications. AE Solar operates in over 100 countries and...


## Catalog & Power


| Measure | AE Solar | ET Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 646 | 10 | +636 |
| Max Power | 730 W | 555 W | +175 W |
| Avg Power | 489 W | 542 W | +54 W |


## Efficiency


| Measure | AE Solar | ET Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.43% | 21.40% | +3.03 pp |
| Avg Efficiency | 21.11% | 20.99% | +0.12 pp |


## Reliability & Warranty


| Measure | AE Solar | ET Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.312%/°C | -0.340%/°C | +0.028 |
| Bifacial Share | 405 (63%) | 5 (50%) | +13 pp |
| Avg Warranty | 29.7 yrs | 27.5 yrs | +2.2 yr |


## Efficiency distribution

AE Solar skews to higher efficiency: 9% of lineup is 23%+


| Efficiency band | AE Solar | ET Solar |
| --- | --- | --- |
| \<20% | 74 (11.5%) | 0 |
| 20-21% | 171 (26.5%) | 5 (50.0%) |
| 21-22% | 142 (22.0%) | 5 (50.0%) |
| 22-23% | 199 (30.8%) | 0 |
| 23%+ | 60 (9.3%) | 0 |


## Power distribution

AE Solar offers more 600W+ panels (13% of lineup)


| Power band | AE Solar | ET Solar |
| --- | --- | --- |
| \<400W | 78 (12.1%) | 0 |
| 400-499W | 329 (50.9%) | 0 |
| 500-599W | 154 (23.8%) | 10 (100.0%) |
| 600-699W | 55 (8.5%) | 0 |
| 700W+ | 30 (4.6%) | 0 |


## Cell technology

Dominant cell tech: **TOPCon** (54%)

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


| Technology | AE Solar | ET Solar |
| --- | --- | --- |
| TOPCon | 349 (54.0%) | 0 |
| PERC | 245 (37.9%) | 10 (100.0%) |
| Back Contact | 21 (3.3%) | 0 |
| N-type | 17 (2.6%) | 0 |
| BIPV | 9 (1.4%) | 0 |
| HJT | 5 (0.8%) | 0 |


## Top panels, AE Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [CME-132BDS-730](https://comparepv.com/panel/ae-solar-cme-132bds-730) | 730 | 23.5 | -0.290 | Monocrystalline |
| 2 | [CME-132BDS-730W](https://comparepv.com/panel/ae-solar-cme-132bds-730w) | 730 | 23.5 | -0.290 | Monocrystalline |
| 3 | [CME-132BDS-725](https://comparepv.com/panel/ae-solar-cme-132bds-725) | 725 | 23.4 | -0.290 | Monocrystalline |
| 4 | [CME-132-725W](https://comparepv.com/panel/ae-solar-cme-132-725w) | 725 | 23.4 | -0.290 | Monocrystalline |
| 5 | [CME-132BDS-725W](https://comparepv.com/panel/ae-solar-cme-132bds-725w) | 725 | 23.4 | -0.290 | Monocrystalline |
| 6 | [AE CME-132 720](https://comparepv.com/panel/ae-solar-ae-cme-132-720) | 720 | 23.2 | -0.290 | Monocrystalline |
| 7 | [CME-132BDS-720](https://comparepv.com/panel/ae-solar-cme-132bds-720) | 720 | 23.2 | -0.290 | Monocrystalline |
| 8 | [AE CME-132-720](https://comparepv.com/panel/ae-solar-ae-cme-132-720-1) | 720 | 23.2 | -0.290 | Monocrystalline |
| 9 | [CME-132-720W](https://comparepv.com/panel/ae-solar-cme-132-720w) | 720 | 23.2 | -0.290 | Monocrystalline |
| 10 | [CME-132BDS-720W](https://comparepv.com/panel/ae-solar-cme-132bds-720w) | 720 | 23.2 | -0.290 | Monocrystalline |


## Top panels, ET Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ET-M772BH555WW/WB](https://comparepv.com/panel/et-solar-et-m772bh555ww-wb) | 555 | 21.4 | -0.340 | Monocrystalline |
| 2 | [ET-M772BH550TW/TB](https://comparepv.com/panel/et-solar-et-m772bh550tw-tb) | 550 | 21.3 | -0.340 | Monocrystalline |
| 3 | [ET-M772BH550WW/WB](https://comparepv.com/panel/et-solar-et-m772bh550ww-wb) | 550 | 21.3 | -0.340 | Monocrystalline |
| 4 | [ET-M772BH545TW/TB](https://comparepv.com/panel/et-solar-et-m772bh545tw-tb) | 545 | 21.1 | -0.340 | Monocrystalline |
| 5 | [ET-M772BH545WW/WB](https://comparepv.com/panel/et-solar-et-m772bh545ww-wb) | 545 | 21.1 | -0.340 | Monocrystalline |
| 6 | [ET-M772BH540TW/TB](https://comparepv.com/panel/et-solar-et-m772bh540tw-tb) | 540 | 20.9 | -0.340 | Monocrystalline |
| 7 | [ET-M772BH540WW/WB](https://comparepv.com/panel/et-solar-et-m772bh540ww-wb) | 540 | 20.9 | -0.340 | Monocrystalline |
| 8 | [ET-M772BH535TW/TB](https://comparepv.com/panel/et-solar-et-m772bh535tw-tb) | 535 | 20.7 | -0.340 | Monocrystalline |
| 9 | [ET-M772BH535WW/WB](https://comparepv.com/panel/et-solar-et-m772bh535ww-wb) | 535 | 20.7 | -0.340 | Monocrystalline |
| 10 | [ET-M772BH530TW/TB](https://comparepv.com/panel/et-solar-et-m772bh530tw-tb) | 530 | 20.5 | -0.340 | Monocrystalline |


## Summary

AE Solar is a German-founded manufacturer established in 2003 in Königsbrunn, Bavaria, by Alexander Maier and his brothers Victor and Waldemar. The company has built a multi-continent manufacturing footprint spanning China (since 2009), Georgia - Kutaisi (since 2019), and Turkey - Kayseri (since 2021), with a combined annual production capacity of approximately 2.5 GW. AE Solar has been confirmed on the BloombergNEF Tier 1 solar module manufacturer list for the 16th consecutive time as of Q1 2025, underscoring its bankability with project lenders. ET Solar is a Chinese manufacturer founded in 2005 and headquartered in Wuxi, China. Over its history the company has cumulatively shipped more than 7.2 GW of modules and became one of the largest Chinese solar EPC contractors globally. However, its main shareholder Taitong Industry Ltd filed for bankruptcy in 2020, and in September 2023 Anhui Gourgen acquired a majority stake. Current BloombergNEF Tier 1 status for ET Solar could not be confirmed from available sources at the time of writing. On institutional footprint and ownership stability, AE Solar currently holds the stronger position.

AE Solar's product portfolio centers on n-type TOPCon bifacial modules across multiple series - including Aurora, Comet, Thunder, and Meteor - suited to residential rooftop installs, commercial C&I projects, and utility-scale ground-mount applications. The company markets a 30-year product warranty combined with a 30-year performance warranty, which goes beyond the typical industry standard of 10-12 years for product coverage. ET Solar has historically offered monocrystalline standard modules, bifacial double-glass modules, and half-cut cell configurations targeting similar market segments, but following the 2023 ownership change its current product roadmap and European after-sales support structure are less clearly documented in independent sources.

For international buyers evaluating the two brands, AE Solar offers greater transparency in terms of confirmed bankability, verified production scale, and traceable European corporate governance. ET Solar carries a strong cumulative shipment record but the recent ownership transition introduces uncertainty around long-term warranty backing that buyers and their financiers should investigate directly before committing to large orders. The two brands are not straightforwardly interchangeable at this point - AE Solar's risk profile is easier to assess, while ET Solar's current standing requires additional due diligence.

Written by claude-sonnet from the figures above.


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- [ASM vs ET Solar](https://comparepv.com/asm-vs-et-solar)


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Source: https://comparepv.com/ae-solar-vs-et-solar

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