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

# JA Solar vs AIKO

JA Solar has the broader catalog (504 vs 144 models). AIKO leads on peak efficiency at 25.20%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | AIKO |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Shanghai |
| Founded | 2005 | 2009 |
| Employees | 37,289 |  |
| Annual capacity | 100+ GW/year |  |
| Tier 1 | yes | yes |
| Listed | SZSE: 002459 | SZSE: 600732 |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.aikosolar.com](https://www.aikosolar.com) |

JA Solar is a global leader in the manufacturing of high-performance photovoltaic products. Founded in 2005, the company designs, develops, manufactures, and sells solar cells and modules. JA Solar's products are used in ground-mounted power plants, commercial & industrial rooftop PV systems, and residential rooftop...


## Catalog & Power


| Measure | JA Solar | AIKO | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 144 | +360 |
| Max Power | 740 W | 805 W | +65 W |
| Avg Power | 456 W | 581 W | +125 W |


## Efficiency


| Measure | JA Solar | AIKO | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 25.20% | +0.40 pp |
| Avg Efficiency | 21.13% | 23.65% | +2.52 pp |


## Reliability & Warranty


| Measure | JA Solar | AIKO | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.271%/°C | +0.051 |
| Bifacial Share | 238 (47%) | 35 (24%) | +23 pp |
| Avg Warranty | 27.9 yrs | 29.5 yrs | +1.6 yr |


## Efficiency distribution

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


| Efficiency band | JA Solar | AIKO |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 3 (2.1%) |
| 20-21% | 99 (19.6%) | 3 (2.1%) |
| 21-22% | 112 (22.2%) | 3 (2.1%) |
| 22-23% | 107 (21.2%) | 12 (8.3%) |
| 23%+ | 74 (14.7%) | 123 (85.4%) |


## Power distribution

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


| Power band | JA Solar | AIKO |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 2 (1.4%) |
| 400-499W | 173 (34.3%) | 50 (34.7%) |
| 500-599W | 120 (23.8%) | 5 (3.5%) |
| 600-699W | 60 (11.9%) | 78 (54.2%) |
| 700W+ | 9 (1.8%) | 9 (6.2%) |


## Cell technology

Dominant cell tech: **PERC** (49%)

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


| Technology | JA Solar | AIKO |
| --- | --- | --- |
| PERC | 247 (49.0%) | 7 (4.9%) |
| TOPCon | 146 (29.0%) | 0 |
| N-type | 90 (17.9%) | 17 (11.8%) |
| Unknown | 16 (3.2%) | 0 |
| HJT | 5 (1.0%) | 0 |
| Back Contact | 0 | 119 (82.6%) |
| Flexible | 0 | 1 (0.7%) |


## Top panels, JA Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [JAM66D46-740/LB](https://comparepv.com/panel/ja-solar-jam66d46-740-lb) | 740 | 23.8 | -0.290 | Monocrystalline |
| 2 | [JAM66D46-735/LB](https://comparepv.com/panel/ja-solar-jam66d46-735-lb) | 735 | 23.7 | -0.290 | Monocrystalline |
| 3 | [JAM66D46-730/LB](https://comparepv.com/panel/ja-solar-jam66d46-730-lb) | 730 | 23.5 | -0.290 | Monocrystalline |
| 4 | [JAM66D46-725/LB](https://comparepv.com/panel/ja-solar-jam66d46-725-lb) | 725 | 23.3 | -0.290 | Monocrystalline |
| 5 | [JAM66D46-720/LB](https://comparepv.com/panel/ja-solar-jam66d46-720-lb) | 720 | 23.2 | -0.290 | Monocrystalline |
| 6 | [JAM66D46-715/LB](https://comparepv.com/panel/ja-solar-jam66d46-715-lb) | 715 | 23.0 | -0.290 | Monocrystalline |
| 7 | [JAM66D46-710/LB](https://comparepv.com/panel/ja-solar-jam66d46-710-lb) | 710 | 22.9 | -0.290 | Monocrystalline |
| 8 | [JAM66D46-705/LB](https://comparepv.com/panel/ja-solar-jam66d46-705-lb) | 705 | 22.7 | -0.290 | Monocrystalline |
| 9 | [JAM66D46-700/LB](https://comparepv.com/panel/ja-solar-jam66d46-700-lb) | 700 | 22.5 | -0.290 | Monocrystalline |
| 10 | [JAM66D46-695/LB](https://comparepv.com/panel/ja-solar-jam66d46-695-lb) | 695 | 22.4 | -0.290 | Monocrystalline |


## 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 |


## Summary

AIKO was founded in 2009 in China and has built its market identity around a single technological focus: All Back Contact (ABC) cell architecture, which accounts for 73.6% of its 144-model product portfolio. Listed on the Shenzhen Stock Exchange (SZSE) and holding Tier 1 bankable status, AIKO has rapidly risen to the top of global efficiency rankings, with a portfolio peak efficiency of 25.2% and a portfolio average of 23.65% - figures that have earned it top placement in TaiyangNews module efficiency rankings for dozens of consecutive months. JA Solar, founded in 2005, is one of the world's largest solar manufacturers by any measure: over 37,000 employees, production capacity exceeding 100 GW, and approximately 75-79 GW shipped in 2024 alone. Also listed on SZSE and Tier 1 rated, JA Solar co-ranked first globally in Wood Mackenzie's module manufacturer ranking for H1 2025. Its portfolio spans 524 models covering PERC, TOPCon, and bifacial product lines, with a peak efficiency of 24.4% and a portfolio average of 20.87% reflecting the breadth of its range rather than a narrowly premium positioning.

AIKO's competitive advantage centers on performance density: its ABC cells eliminate front-side metal contacts to maximize light capture, and the resulting average temperature coefficient of -0.27%/°C is meaningfully better than JA Solar's average of -0.32%/°C, translating to stronger real-world output during hot weather. With average module power of 581 W and a maximum of 805 W, AIKO panels are best suited to space-constrained residential rooftop installations, premium prosumer systems, and commercial C&I projects where efficiency-per-square-meter justifies a price premium. JA Solar's strength lies in scale, supply reliability, and portfolio flexibility: its 44.3% share of bifacial models makes it a natural fit for utility-scale ground-mount arrays optimizing albedo gains, while its broad wattage range and deep penetration across European and global installer networks make it a default choice for high-volume procurement.

For international buyers choosing between the two, the decision tracks closely with project type. AIKO is the compelling option where roof space is at a premium, efficiency is the primary metric, and the buyer values longer warranties - averaging 29.5 years across its portfolio. JA Solar, with unmatched production scale, proven financial stability, and the widest installer adoption across Europe, remains the reliable choice for projects where cost-per-watt, supply certainty, and product availability in large volumes are the deciding factors.

Written by claude-sonnet from the figures above.


## Other comparisons

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


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Source: https://comparepv.com/ja-solar-vs-aiko

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