---
title: "AIKO vs Suntech - Brand Comparison | ComparePV"
description: "Compare AIKO vs Suntech solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/aiko-vs-suntech"
---

# AIKO vs Suntech

Suntech has the broader catalog (255 vs 144 models). AIKO leads on peak efficiency at 25.20%. Suntech leans bifacial (45% of lineup).


## The two companies


| Attribute | AIKO | Suntech |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Shanghai | Wuxi |
| Founded | 2009 | 2001 |
| Employees |  |  |
| Annual capacity |  |  |
| Tier 1 | yes | yes |
| Listed | SZSE: 600732 |  |
| Website | [https://www.aikosolar.com](https://www.aikosolar.com) | [https://www.suntech-power.com](https://www.suntech-power.com) |


## Catalog & Power


| Measure | AIKO | Suntech | Margin |
| --- | --- | --- | --- |
| Panel Models | 144 | 255 | +111 |
| Max Power | 805 W | 735 W | +70 W |
| Avg Power | 581 W | 505 W | +76 W |


## Efficiency


| Measure | AIKO | Suntech | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 25.20% | 24.80% | +0.40 pp |
| Avg Efficiency | 23.65% | 21.76% | +1.89 pp |


## Reliability & Warranty


| Measure | AIKO | Suntech | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.271%/°C | -0.316%/°C | +0.045 |
| Bifacial Share | 35 (24%) | 114 (45%) | +20 pp |
| Avg Warranty | 29.5 yrs | 28.4 yrs | +1.1 yr |


## Efficiency distribution

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


| Efficiency band | AIKO | Suntech |
| --- | --- | --- |
| \<20% | 3 (2.1%) | 11 (4.3%) |
| 20-21% | 3 (2.1%) | 61 (23.9%) |
| 21-22% | 3 (2.1%) | 64 (25.1%) |
| 22-23% | 12 (8.3%) | 70 (27.5%) |
| 23%+ | 123 (85.4%) | 49 (19.2%) |


## Power distribution

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


| Power band | AIKO | Suntech |
| --- | --- | --- |
| \<400W | 2 (1.4%) | 32 (12.5%) |
| 400-499W | 50 (34.7%) | 104 (40.8%) |
| 500-599W | 5 (3.5%) | 69 (27.1%) |
| 600-699W | 78 (54.2%) | 42 (16.5%) |
| 700W+ | 9 (6.2%) | 8 (3.1%) |


## Cell technology

Dominant cell tech: **Back Contact** (83%)

Dominant cell tech: **TOPCon** (71%)


| Technology | AIKO | Suntech |
| --- | --- | --- |
| Back Contact | 119 (82.6%) | 0 |
| N-type | 17 (11.8%) | 5 (2.0%) |
| PERC | 7 (4.9%) | 5 (2.0%) |
| Flexible | 1 (0.7%) | 0 |
| TOPCon | 0 | 180 (70.6%) |
| Unknown | 0 | 65 (25.5%) |


## 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, Suntech


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [STP735S-D66-Nsh+](https://comparepv.com/panel/suntech-stp735s-d66-nsh) | 735 | 23.7 | -0.280 | Monocrystalline |
| 2 | [STP730S-D66-Nsh+](https://comparepv.com/panel/suntech-stp730s-d66-nsh) | 730 | 23.5 | -0.280 | Monocrystalline |
| 3 | [STP725S-D66-Nsh+](https://comparepv.com/panel/suntech-stp725s-d66-nsh) | 725 | 23.3 | -0.280 | Monocrystalline |
| 4 | [STP720S-D66-Nsh+](https://comparepv.com/panel/suntech-stp720s-d66-nsh) | 720 | 23.2 | -0.280 | Monocrystalline |
| 5 | [STP715S-D66-Nsh+](https://comparepv.com/panel/suntech-stp715s-d66-nsh) | 715 | 23.0 | -0.280 | Monocrystalline |
| 6 | [STP710S-D66-Nsh+](https://comparepv.com/panel/suntech-stp710s-d66-nsh) | 710 | 22.9 | -0.290 | Monocrystalline |
| 7 | [STP705S-D66-Nsh+](https://comparepv.com/panel/suntech-stp705s-d66-nsh) | 705 | 22.7 | -0.290 | Monocrystalline |
| 8 | [STP700S-D66-Nsh+](https://comparepv.com/panel/suntech-stp700s-d66-nsh) | 700 | 22.5 | -0.290 | Monocrystalline |
| 9 | [STP675S-D66/Wmh](https://comparepv.com/panel/suntech-stp675s-d66-wmh) | 675 | 21.7 | -0.340 | Monocrystalline |
| 10 | [STP670S-D66/Wmh](https://comparepv.com/panel/suntech-stp670s-d66-wmh) | 670 | 21.6 | -0.340 | Monocrystalline |


## Summary

AIKO is a Chinese cell and module manufacturer headquartered in Shanghai, founded in 2009, with its main production base established in Zhejiang province in 2016. The company holds BloombergNEF Tier 1 bankability status and has scaled capacity aggressively in recent years, growing from roughly 20 GW per year in early 2025 to over 35 GW per year by 2026, placing it among the ten largest module makers globally. Suntech, founded in 2001 in Wuxi by Shi Zhengrong, was once the world's largest solar panel producer but defaulted on its debt in 2013, was later acquired by Shunfeng International Clean Energy, and now operates as Wuxi Suntech Power. While both companies retain Tier 1 status, AIKO currently has a stronger institutional footprint given its rapid capacity growth, whereas Suntech is a legacy brand with a more modest, stabilized position.

AIKO is best known for its proprietary ABC (All Back Contact) cell technology, which removes front-side gridlines and has driven some of the highest module efficiencies on the market, earning the company top rankings on Taiyangnews efficiency charts since 2023. These high-efficiency modules suit space-constrained residential rooftops as well as commercial and utility-scale ground-mount projects. Suntech's lineup leans on more conventional PERC and mono PERC cell technology, serving residential, C&I, and ground-mount segments with an emphasis on price competitiveness rather than record-setting efficiency.

For a typical buyer prioritizing efficiency and access to newer cell technology, AIKO is generally the stronger default, particularly on constrained roof space. Suntech remains a reasonable budget-oriented alternative, provided installers confirm current warranty support in the buyer's region - both brands are bankable, but their market momentum and technology roadmaps diverge noticeably.

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 Suntech](https://comparepv.com/ae-solar-vs-suntech)
- [AIKO vs AEET](https://comparepv.com/aiko-vs-aeet)
- [AKCOME vs Suntech](https://comparepv.com/akcome-vs-suntech)
- [AIKO vs ARTsolar](https://comparepv.com/aiko-vs-artsolar)
- [ASM vs Suntech](https://comparepv.com/asm-vs-suntech)


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

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