---
title: "AU Optronics vs VSUN - Brand Comparison | ComparePV"
description: "Compare AU Optronics vs VSUN solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/au-optronics-vs-vsun"
---

# AU Optronics vs VSUN

VSUN has the broader catalog (111 vs 1 models). VSUN leads on peak efficiency at 23.14%. VSUN leans bifacial (75% of lineup).


## The two companies


| Attribute | AU Optronics | VSUN |
| --- | --- | --- |
| Country | Taiwan | Germany |
| Headquarters | Hsinchu | Frankfurt am Main |
| Founded | 1996 | 2012 |
| Employees | 41000+ |  |
| Annual capacity |  |  |
| Tier 1 | yes | no |
| Listed | TWSE (Taiwan Stock Exchange): 2409 |  |
| Website | [https://www.auo.com/en-global](https://www.auo.com/en-global) | [https://www.vsun-solar.com](https://www.vsun-solar.com) |

AU Optronics (AUO) is a technology-driven company based in Taiwan, specializing in optoelectronics and display solutions. They deliver products and services that advance innovation in areas like display technology, system solutions, industrial intelligence, healthcare, and energy. AUO operates globally across Asia...


## Catalog & Power


| Measure | AU Optronics | VSUN | Margin |
| --- | --- | --- | --- |
| Panel Models | 1 | 111 | +110 |
| Max Power | 170 W | 715 W | +545 W |
| Avg Power | 170 W | 524 W | +354 W |


## Efficiency


| Measure | AU Optronics | VSUN | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 16.00% | 23.14% | +7.14 pp |
| Avg Efficiency | 16.00% | 21.71% | +5.71 pp |


## Reliability & Warranty


| Measure | AU Optronics | VSUN | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.438%/°C | -0.308%/°C | +0.130 |
| Bifacial Share | 0 (0%) | 83 (75%) | +75 pp |
| Avg Warranty | - | 29.7 yrs |  |


## Efficiency distribution

VSUN skews to higher efficiency: 3% of lineup is 23%+


| Efficiency band | AU Optronics | VSUN |
| --- | --- | --- |
| \<20% | 1 (100.0%) | 1 (0.9%) |
| 20-21% | 0 | 13 (11.7%) |
| 21-22% | 0 | 55 (49.5%) |
| 22-23% | 0 | 39 (35.1%) |
| 23%+ | 0 | 3 (2.7%) |


## Power distribution

VSUN offers more 600W+ panels (29% of lineup)


| Power band | AU Optronics | VSUN |
| --- | --- | --- |
| \<400W | 1 (100.0%) | 3 (2.7%) |
| 400-499W | 0 | 48 (43.2%) |
| 500-599W | 0 | 28 (25.2%) |
| 600-699W | 0 | 27 (24.3%) |
| 700W+ | 0 | 5 (4.5%) |


## Cell technology

Dominant cell tech: **TOPCon** (72%)


| Technology | AU Optronics | VSUN |
| --- | --- | --- |
| Unknown | 1 (100.0%) | 3 (2.7%) |
| TOPCon | 0 | 80 (72.1%) |
| PERC | 0 | 28 (25.2%) |


## Top panels, AU Optronics


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ASM170M](https://comparepv.com/panel/au-optronics-asm170m) | 170 | 16.0 | -0.438 | Monocrystalline |


## Top panels, VSUN


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [VSUN715N-132BMHT-DG](https://comparepv.com/panel/vsun-vsun715n-132bmht-dg) | 715 | 23.0 | -0.300 | Monocrystalline |
| 2 | [VSUN710N-132BMHT-DG](https://comparepv.com/panel/vsun-vsun710n-132bmht-dg) | 710 | 22.9 | -0.300 | Monocrystalline |
| 3 | [VSUN705N-132BMHT-DG](https://comparepv.com/panel/vsun-vsun705n-132bmht-dg) | 705 | 22.7 | -0.300 | Monocrystalline |
| 4 | [VSUN700N-132BMH-DG](https://comparepv.com/panel/vsun-vsun700n-132bmh-dg) | 700 | 22.5 | -0.300 | Monocrystalline |
| 5 | [VSUN700N-132BMHT-DG](https://comparepv.com/panel/vsun-vsun700n-132bmht-dg) | 700 | 22.5 | -0.300 | Monocrystalline |
| 6 | [VSUN695N-132BMH-DG](https://comparepv.com/panel/vsun-vsun695n-132bmh-dg) | 695 | 22.4 | -0.300 | Monocrystalline |
| 7 | [VSUN695N-132BMHT-DG](https://comparepv.com/panel/vsun-vsun695n-132bmht-dg) | 695 | 22.4 | -0.300 | Monocrystalline |
| 8 | [VSUN690N-132BMHT-DG](https://comparepv.com/panel/vsun-vsun690n-132bmht-dg) | 690 | 22.2 | -0.300 | Monocrystalline |
| 9 | [VSUN690N-132BMH-DG](https://comparepv.com/panel/vsun-vsun690n-132bmh-dg) | 690 | 22.2 | -0.300 | Monocrystalline |
| 10 | [VSUN685N-132BMH-DG](https://comparepv.com/panel/vsun-vsun685n-132bmh-dg) | 685 | 22.1 | -0.300 | Monocrystalline |


## Other comparisons

- [AU Optronics vs A.B. Energy](https://comparepv.com/au-optronics-vs-a-b-energy)
- [AE Solar vs VSUN](https://comparepv.com/ae-solar-vs-vsun)
- [AU Optronics vs AEET](https://comparepv.com/au-optronics-vs-aeet)
- [AIKO vs VSUN](https://comparepv.com/aiko-vs-vsun)
- [AU Optronics vs AKCOME](https://comparepv.com/au-optronics-vs-akcome)
- [ARTsolar vs VSUN](https://comparepv.com/artsolar-vs-vsun)


---

Source: https://comparepv.com/au-optronics-vs-vsun

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