---
title: "AIKO vs WINAICO - Brand Comparison | ComparePV"
description: "Compare AIKO vs WINAICO solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/aiko-vs-winaico"
image: "https://comparepv.com/og/compare/manufacturers/aiko/winaico.png"
---

# AIKO vs WINAICO

AIKO has the broader catalog (144 vs 44 models). AIKO leads on peak efficiency at 25.20%. WINAICO leans bifacial (77% of lineup).


## The two companies


| Attribute | AIKO | WINAICO |
| --- | --- | --- |
| Country | China | Taiwan |
| Headquarters | Shanghai | Hsinchu |
| Founded | 2009 | 2003 |
| Employees |  | 100-500 |
| Annual capacity |  | 0.1-1 GW/year |
| Tier 1 | yes | yes |
| Listed | SZSE: 600732 |  |
| Website | [https://www.aikosolar.com](https://www.aikosolar.com) | [https://winaico.com](https://winaico.com) |

WINAICO is a Taiwanese manufacturer of high-performance crystalline silicon photovoltaic modules, operating as an independent subsidiary of Win Win Precision Technology. The company focuses on premium-quality solar panels backed by long warranty periods and has built a strong reputation in markets such as Germany...


## Catalog & Power


| Measure | AIKO | WINAICO | Margin |
| --- | --- | --- | --- |
| Panel Models | 144 | 44 | +100 |
| Max Power | 805 W | 675 W | +130 W |
| Avg Power | 581 W | 491 W | +91 W |


## Efficiency


| Measure | AIKO | WINAICO | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 25.20% | 25.00% | +0.20 pp |
| Avg Efficiency | 23.65% | 22.99% | +0.67 pp |


## Reliability & Warranty


| Measure | AIKO | WINAICO | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.271%/°C | -0.284%/°C | +0.014 |
| Bifacial Share | 35 (24%) | 34 (77%) | +53 pp |
| Avg Warranty | 29.5 yrs | 28.9 yrs | +0.7 yr |


## Efficiency distribution

AIKO skews to higher efficiency: 85% of lineup is 23%+


| Efficiency band | AIKO | WINAICO |
| --- | --- | --- |
| \<20% | 3 (2.1%) | 0 |
| 20-21% | 3 (2.1%) | 4 (9.1%) |
| 21-22% | 3 (2.1%) | 7 (15.9%) |
| 22-23% | 12 (8.3%) | 7 (15.9%) |
| 23%+ | 123 (85.4%) | 26 (59.1%) |


## Power distribution

AIKO offers more 600W+ panels (60% of lineup)


| Power band | AIKO | WINAICO |
| --- | --- | --- |
| \<400W | 2 (1.4%) | 0 |
| 400-499W | 50 (34.7%) | 27 (61.4%) |
| 500-599W | 5 (3.5%) | 12 (27.3%) |
| 600-699W | 78 (54.2%) | 5 (11.4%) |
| 700W+ | 9 (6.2%) | 0 |


## Cell technology

Dominant cell tech: Back Contact (83%)

Dominant cell tech: Back Contact (41%)


| Technology | AIKO | WINAICO |
| --- | --- | --- |
| Back Contact | 119 (82.6%) | 18 (40.9%) |
| N-type | 17 (11.8%) | 8 (18.2%) |
| PERC | 7 (4.9%) | 0 |
| Flexible | 1 (0.7%) | 0 |
| Unknown | 0 | 10 (22.7%) |
| HJT | 0 | 4 (9.1%) |
| TOPCon | 0 | 4 (9.1%) |


## Top panels, AIKO


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 | 25.1 | -0.260 | Monocrystalline |
| 2 | [AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 | 24.9 | -0.260 | Monocrystalline |
| 3 | [AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 | 24.8 | -0.260 | Monocrystalline |
| 4 | [AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 | 24.6 | -0.260 | Monocrystalline |
| 5 | [AIKO-A785-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a785-grh78dw) | 785 | 24.4 | -0.260 | Monocrystalline |
| 6 | [AIKO-A780-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a780-grh78dw) | 780 | 24.3 | -0.260 | Monocrystalline |
| 7 | [AIKO-A775-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a775-grh78dw) | 775 | 24.1 | -0.260 | Monocrystalline |
| 8 | [AIKO-A770-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a770-grh78dw) | 770 | 24.0 | -0.260 | Monocrystalline |
| 9 | [AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 | 25.0 | -0.260 | Monocrystalline |
| 10 | [AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 | 24.9 | -0.260 | Monocrystalline |


## Top panels, WINAICO


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 | 25.0 | -0.260 | Monocrystalline |
| 2 | [WST-670BKX72-A2](https://comparepv.com/panel/winaico-wst-670bkx72-a2) | 670 | 24.8 | -0.260 | Monocrystalline |
| 3 | [WST-665BKX72-A2](https://comparepv.com/panel/winaico-wst-665bkx72-a2) | 665 | 24.6 | -0.260 | Monocrystalline |
| 4 | [WST-630NHX66-A4](https://comparepv.com/panel/winaico-wst-630nhx66-a4) | 630 | 23.3 | -0.240 | Monocrystalline |
| 5 | [WST-625NHX66-A4](https://comparepv.com/panel/winaico-wst-625nhx66-a4) | 625 | 23.1 | -0.240 | Monocrystalline |
| 6 | [WST-585NGX72-A7](https://comparepv.com/panel/winaico-wst-585ngx72-a7) | 585 | 22.6 | -0.290 | Monocrystalline |
| 7 | [WST-540NGX-D3](https://comparepv.com/panel/winaico-wst-540ngx-d3) | 540 | 22.8 | -0.300 | Monocrystalline |
| 8 | [WST-530NGX-D3](https://comparepv.com/panel/winaico-wst-530ngx-d3) | 530 | 22.3 | -0.300 | Monocrystalline |
| 9 | [WST-525NCX54-AW](https://comparepv.com/panel/winaico-wst-525ncx54-aw) | 525 | 23.6 | -0.280 | Monocrystalline |
| 10 | [WST-520NCX54-AW](https://comparepv.com/panel/winaico-wst-520ncx54-aw) | 520 | 23.4 | -0.280 | Monocrystalline |


## Summary

AIKO is a Chinese solar manufacturer, founded with roots in PERC production before pivoting heavily toward its proprietary ABC (All Back Contact) back-contact cell technology, with cell and module capacity that sources put at roughly 10 GW of ABC output by end of 2023 scaling toward tens of gigawatts as new plants in Jinan and Yiwu ramp through 2025. AIKO has publicized a BloombergNEF Tier 1 designation, though at least one independent reviewer found it absent from a recent BNEF list, so its current standing should be verified directly against the live BNEF registry. WINAICO, by contrast, is the solar arm of Win Win Precision Technology, headquartered in Hsinchu, Taiwan, and traces its module business to around 2007-2008; it has also claimed BNEF Tier 1 status in company press releases, again with at least one reviewer disputing the claim, and its production scale is far smaller, with historical figures in the 150-200 MW range for its core Taiwan facility and only unverified third-party estimates suggesting capacity above 1 GW today. On institutional footprint, AIKO is clearly the larger and more rapidly expanding manufacturer, operating at an industrial scale that dwarfs WINAICO's boutique Taiwanese production base.

In terms of product focus, AIKO's ABC cell lineup, including its Neostar residential modules, is positioned as a premium, high-efficiency option aimed at rooftop installations where aesthetics, shade tolerance, and low degradation matter, and reviewers consistently note strong efficiency paired with a price premium. WINAICO is generally described as a smaller, quality-focused manufacturer using more conventional crystalline silicon module designs, often marketed on reliability, a strong warranty record, and consistent field performance in markets like Australia and the Netherlands, making it a fit for buyers prioritizing a long, well-supported product warranty over cutting-edge cell technology.

For a typical residential buyer in 2025, AIKO is the stronger default if maximum efficiency and modern back-contact technology are priorities and the premium price is acceptable, while WINAICO remains a credible, if lower-profile, alternative for buyers who value a manufacturer's long warranty track record and don't need industry-leading efficiency figures. Neither brand's Tier 1 claim should be taken at face value without checking the current BloombergNEF list, since independent sources diverge on both.

\---LINKS---

\- https://aikosolar.com/?p=18353 \| AIKO Achieves Prestigious Tier 1 Status by BloombergNEF \| article

\- https://www.fmb.org.uk/homepicks/solar-panels/aiko-solar-panel-review/ \| AIKO solar panel review: efficiency, warranty, customer satisfaction \| review

\- https://www.pv-magazine.com/press-releases/bloomberg-rates-winaico-a-tier-1-module-maker\_100020698/ \| Bloomberg rates WINAICO a Tier 1 module maker \| article

\- https://www.cleanenergyreviews.info/blog/winaico-solar-panel-review \| Winaico Solar Panel Review - quality, warranty and performance \| review

\- https://www.pvtime.org/?p=22449 \| 10GW! AIKO rolls out BC module from new factory in Jinan, China \| article

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


## Other comparisons

- [AIKO vs A.B. Energy](https://comparepv.com/aiko-vs-a-b-energy)
- [AE Solar vs WINAICO](https://comparepv.com/ae-solar-vs-winaico)
- [AIKO vs AEET](https://comparepv.com/aiko-vs-aeet)
- [AKCOME vs WINAICO](https://comparepv.com/akcome-vs-winaico)
- [AIKO vs ARTsolar](https://comparepv.com/aiko-vs-artsolar)
- [ASM vs WINAICO](https://comparepv.com/asm-vs-winaico)


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Source: https://comparepv.com/aiko-vs-winaico

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