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

# DMEGC vs JA Solar

JA Solar has the broader catalog (504 vs 150 models). JA Solar leads on peak efficiency at 24.80%. DMEGC leans bifacial (73% of lineup).


## The two companies


| Attribute | DMEGC | JA Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Dongyang, Zhejiang Province | Beijing |
| Founded | 1980 | 2005 |
| Employees | 18,831 | 37,289 |
| Annual capacity | 21 GW/year | 100+ GW/year |
| Tier 1 | yes | yes |
| Listed | Shenzhen Stock Exchange: SZ: 002056 | SZSE: 002459 |
| Website | [https://www.dmegcsolar.com](https://www.dmegcsolar.com) | [https://www.jasolar.com](https://www.jasolar.com) |

DMEGC Solar, founded in 1980, is a global provider of renewable energy solutions, specializing in high-efficiency solar panels for residential, commercial, and utility-scale projects. The company has six manufacturing bases and is known for its integrated supply chain, from wafers to modules. DMEGC Solar is committed...

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 | DMEGC | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 150 | 504 | +354 |
| Max Power | 720 W | 740 W | +20 W |
| Avg Power | 476 W | 456 W | +20 W |


## Efficiency


| Measure | DMEGC | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.50% | 24.80% | +1.30 pp |
| Avg Efficiency | 21.39% | 21.13% | +0.25 pp |


## Reliability & Warranty


| Measure | DMEGC | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.291%/°C | -0.322%/°C | +0.031 |
| Bifacial Share | 109 (73%) | 238 (47%) | +25 pp |
| Avg Warranty | 30.0 yrs | 27.9 yrs | +2.1 yr |


## Efficiency distribution

DMEGC skews to higher efficiency: 21% of lineup is 23%+


| Efficiency band | DMEGC | JA Solar |
| --- | --- | --- |
| \<20% | 24 (16.0%) | 112 (22.2%) |
| 20-21% | 4 (2.7%) | 99 (19.6%) |
| 21-22% | 11 (7.3%) | 112 (22.2%) |
| 22-23% | 79 (52.7%) | 107 (21.2%) |
| 23%+ | 32 (21.3%) | 74 (14.7%) |


## Power distribution

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


| Power band | DMEGC | JA Solar |
| --- | --- | --- |
| \<400W | 19 (12.7%) | 142 (28.2%) |
| 400-499W | 89 (59.3%) | 173 (34.3%) |
| 500-599W | 23 (15.3%) | 120 (23.8%) |
| 600-699W | 14 (9.3%) | 60 (11.9%) |
| 700W+ | 5 (3.3%) | 9 (1.8%) |


## Cell technology

Dominant cell tech: **TOPCon** (73%)

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


| Technology | DMEGC | JA Solar |
| --- | --- | --- |
| TOPCon | 109 (72.7%) | 146 (29.0%) |
| N-type | 41 (27.3%) | 90 (17.9%) |
| PERC | 0 | 247 (49.0%) |
| Unknown | 0 | 16 (3.2%) |
| HJT | 0 | 5 (1.0%) |


## Top panels, DMEGC


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [DM720G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm720g12t-b66hsw) | 720 | 23.2 | -0.290 | Monocrystalline |
| 2 | [DM715G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm715g12t-b66hsw) | 715 | 23.0 | -0.290 | Monocrystalline |
| 3 | [DM710G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm710g12t-b66hsw) | 710 | 22.9 | -0.290 | Monocrystalline |
| 4 | [DM705G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm705g12t-b66hsw) | 705 | 22.7 | -0.290 | Monocrystalline |
| 5 | [DM700G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm700g12t-b66hsw) | 700 | 22.5 | -0.290 | Monocrystalline |
| 6 | [DM695G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm695g12t-b66hsw) | 695 | 22.4 | -0.290 | Monocrystalline |
| 7 | [DM650M10T-B78HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm650m10t-b78hsw) | 650 | 23.3 | -0.290 | Monocrystalline |
| 8 | [DM645M10T-B78HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm645m10t-b78hsw) | 645 | 23.1 | -0.290 | Monocrystalline |
| 9 | [DM640M10T-B78HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm640m10t-b78hsw) | 640 | 22.9 | -0.290 | Monocrystalline |
| 10 | [DM635G12RT-B66HSW](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dm635g12rt-b66hsw) | 635 | 23.5 | -0.290 | Monocrystalline |


## 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 |


## Summary

DMEGC and JA Solar are both Chinese Tier 1-rated photovoltaic module manufacturers, but they differ substantially in scale, technology focus, and market positioning. DMEGC traces its origins to 1980, making it one of the longest-established names in the sector, with approximately 18,800 employees and a declared production capacity of 21 GW. JA Solar, founded in 2005, has grown into one of the largest solar module producers in the world - employing over 37,000 people and operating at more than 100 GW of annual capacity - a scale that helped it jointly top Wood Mackenzie's Global Solar Module Manufacturer Ranking for the first half of 2025. Both companies are listed on the Shenzhen Stock Exchange and carry Bloomberg Tier 1 bankability status, giving project financiers and EPCs confidence in their long-term viability.

On the technology side, DMEGC has made a decisive shift toward TOPCon cells, which account for over 56% of its 150-module portfolio. This translates into a higher average panel power of 475.8 Wp, an average efficiency of 21.4%, and a notably better average temperature coefficient of -0.2912%/°C - compared to JA Solar's -0.3226%/°C - meaning DMEGC modules lose less output on hot days. With over 72% of its lineup being bifacial, DMEGC is particularly well-suited to residential rooftop installs, small ground-mount systems, and commercial C&I projects where albedo gains and per-panel performance metrics are prioritized. DMEGC also earned 15 "Top Performer" designations from PV Evolution Labs, reinforcing production consistency. JA Solar's much broader catalog of 524 modules still leans on PERC as its dominant technology at over 52% of the portfolio, though its premium lines push maximum efficiency to 24.4% - the higher ceiling in this comparison. Its depth of product range, high-volume logistics network, and tenth consecutive PVEL "Top Performer" recognition in 2025 make it the natural partner for utility-scale ground-mount projects and large C&I procurement where delivery reliability and institutional track record matter most.

For international buyers selecting between the two, the choice largely follows project scale and supply priorities. DMEGC offers a focused, technology-forward portfolio with superior thermal characteristics and a strong bifacial and TOPCon push - well suited to residential and small-to-mid commercial applications where module-level performance drives the decision. JA Solar's unmatched manufacturing scale, extensive global distribution, and proven ability to supply the largest procurement contracts make it the more dependable partner for utility-scale developers and institutional investors who require volume, product variety, and a deeply established bankability track record.

Written by claude-sonnet from the figures above.


## Other comparisons

- [DMEGC vs A.B. Energy](https://comparepv.com/dmegc-vs-a-b-energy)
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- [AIKO vs JA Solar](https://comparepv.com/aiko-vs-ja-solar)
- [DMEGC vs AKCOME](https://comparepv.com/dmegc-vs-akcome)
- [ARTsolar vs JA Solar](https://comparepv.com/artsolar-vs-ja-solar)


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

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