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

# JA Solar vs KDM Kingdom Solar

JA Solar has the broader catalog (504 vs 3 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | KDM Kingdom Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Hefei |
| Founded | 2005 | 2010 |
| Employees | 37,289 | 100 |
| Annual capacity | 100+ GW/year | 1 GW/year |
| Tier 1 | yes | no |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.kdmsolar.com](https://www.kdmsolar.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...

KDM Kingdom Solar is a Chinese solar module manufacturer based in Hefei, Anhui Province. The company specializes in manufacturing monocrystalline solar panels for global markets.


## Catalog & Power


| Measure | JA Solar | KDM Kingdom Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 3 | +501 |
| Max Power | 740 W | 590 W | +150 W |
| Avg Power | 456 W | 533 W | +77 W |


## Efficiency


| Measure | JA Solar | KDM Kingdom Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 22.80% | +2.00 pp |
| Avg Efficiency | 21.13% | 22.46% | +1.32 pp |


## Reliability & Warranty


| Measure | JA Solar | KDM Kingdom Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.290%/°C | +0.032 |
| Bifacial Share | 238 (47%) | 0 (0%) | +47 pp |
| Avg Warranty | 27.9 yrs | 30.0 yrs | +2.1 yr |


## Efficiency distribution

JA Solar skews to higher efficiency: 15% of lineup is 23%+


| Efficiency band | JA Solar | KDM Kingdom Solar |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 0 |
| 22-23% | 107 (21.2%) | 3 (100.0%) |
| 23%+ | 74 (14.7%) | 0 |


## Power distribution

JA Solar offers more 600W+ panels (14% of lineup)


| Power band | JA Solar | KDM Kingdom Solar |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 1 (33.3%) |
| 500-599W | 120 (23.8%) | 2 (66.7%) |
| 600-699W | 60 (11.9%) | 0 |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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

Dominant cell tech: **N-type** (100%)


| Technology | JA Solar | KDM Kingdom Solar |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 0 |
| N-type | 90 (17.9%) | 3 (100.0%) |
| Unknown | 16 (3.2%) | 0 |
| HJT | 5 (1.0%) | 0 |


## 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, KDM Kingdom Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [KD-M590-144-N](https://comparepv.com/panel/kdm-kingdom-solar-kd-m590-144-n) | 590 | 22.8 | -0.290 | Monocrystalline |
| 2 | [KD-M570-144-N](https://comparepv.com/panel/kdm-kingdom-solar-kd-m570-144-n) | 570 | 22.1 | -0.290 | Monocrystalline |
| 3 | [KD-M440-108-N](https://comparepv.com/panel/kingdom-kd-m440-108-n) | 440 | 22.5 | -0.290 | Monocrystalline |


## Summary

JA Solar and KDM Kingdom Solar are both China-based photovoltaic module manufacturers, but they occupy very different positions in the global market. JA Solar was founded in 2005 and has grown into one of the world's top-ranked module suppliers, with a production capacity exceeding 100 GW annually, a workforce of over 37,000 employees, and a listing on the Shenzhen Stock Exchange (SZSE). The company holds Tier 1 bankable status as recognized by S&P Global Commodity Insights, confirming its financial credibility and suitability for project-financed solar developments. It ranked 2nd globally in module shipments and achieved Top Performer status in PVEL reliability testing for the tenth time in 2025. KDM Kingdom Solar, founded in 2010, is a much smaller manufacturer with approximately 1 GW of annual production capacity and around 100 employees. It does not hold Tier 1 bankable status, and its publicly listed product catalog consists of only 3 panel models. Despite its smaller scale, the company exports its KDM-brand modules to over 100 countries according to its own claims.

On the technology side, JA Solar offers a broad and diverse portfolio of 524 panel models, with PERC cells representing the majority (over 52%) of its lineup alongside growing N-type TOPCon offerings. Its maximum panel power reaches 740 Wp, average efficiency sits at approximately 20.9%, and bifacial modules make up around 44% of the portfolio - making JA Solar well suited for utility-scale ground-mount projects, large commercial C&I installations, and residential rooftop installs where financing is involved and component bankability matters. KDM Kingdom Solar, by contrast, offers a narrow but technologically focused range: all three of its cataloged models use N-type cell technology, resulting in a notably higher average module efficiency of approximately 22.5%, a favorable temperature coefficient of -0.29%/°C Pmax, and a 30-year product warranty. No bifacial modules are offered. This positions KDM as a potential option for space-constrained residential rooftop installations where high energy density is prioritized.

For international buyers and project developers choosing between these two manufacturers, JA Solar is the clear choice for any project requiring bankable, financeable components - particularly utility-scale, C&I, or institutionally financed residential projects. KDM Kingdom Solar may appeal to buyers seeking N-type technology at a potentially lower price point for smaller residential applications, but the very limited portfolio, absence of Tier 1 status, and small company scale introduce meaningful supply chain and warranty risk that buyers should carefully evaluate before committing to a long-term procurement relationship.

Written by claude-sonnet from the figures above.


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Source: https://comparepv.com/ja-solar-vs-kdm-kingdom-solar

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