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

# DAH vs JA Solar

JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | DAH | JA Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Hefei | Beijing |
| Founded | 2009 | 2005 |
| Employees |  | 37,289 |
| Annual capacity |  | 100+ GW/year |
| Tier 1 | yes | yes |
| Listed |  | SZSE: 002459 |
| Website | [https://www.dahsolarpv.com](https://www.dahsolarpv.com) | [https://www.jasolar.com](https://www.jasolar.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 | DAH | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 0 | 504 | +504 |
| Max Power | 0 W | 740 W | +740 W |
| Avg Power | 0 W | 456 W | +456 W |


## Efficiency


| Measure | DAH | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | - | 24.80% |  |
| Avg Efficiency | - | 21.13% |  |


## Reliability & Warranty


| Measure | DAH | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | - | -0.322%/°C |  |
| Bifacial Share | 0 (0%) | 238 (47%) | +47 pp |
| Avg Warranty | - | 27.9 yrs |  |


## Efficiency distribution

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


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


## Power distribution

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


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


## Cell technology

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


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


## 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 |


## Summary

JA Solar, founded in 2005 and listed on the Shenzhen Stock Exchange (SZSE), is one of the largest solar module manufacturers in the world, with a production capacity exceeding 100 GW and a workforce of over 37,000 employees. The company shipped an estimated 75-79 GW of panels in 2024 and maintains a consistent Tier 1 bankable status according to Bloomberg New Energy Finance, placing it among the top-ranked brands on SolarReviews' Best Solar Brands of 2025. DAH Solar, founded four years later in 2009 and headquartered in Hefei, China, operates at a considerably smaller scale - estimated at around 10 GW of annual production capacity - but has established itself as a focused technology specialist, also holding Tier 1 status as of Q1 2025. Both companies target global markets, but JA Solar's significantly larger scale gives it a more prominent international procurement presence, including in Europe where it ranked as the leading module brand in early 2026.

DAH Solar's portfolio leans heavily toward TOPCon technology (81.2% of its 356 models), with an average panel power of 521.8 Wp, average efficiency of 22.1%, and a notably favorable average temperature coefficient of -0.298%/°C. Its bifaciality rate of 88.8% and patented Full-Screen frameless design - which reduces dust accumulation and improves energy yield in real-world conditions - make its panels well suited for residential rooftop installations and commercial C&I projects where efficiency density and thermal performance are priorities. JA Solar offers a broader catalog of 524 models reaching up to 740 Wp and a peak efficiency of 24.4% in its newer TOPCon DeepBlue 4.0 Pro line, though PERC technology still accounts for 52.1% of its portfolio. Its average panel efficiency of 20.9% and a higher temperature coefficient of -0.323%/°C reflect this more mixed technology mix. JA Solar's production scale and logistics network make it a natural fit for utility-scale ground-mount projects and large commercial deployments where supply chain reliability and volume availability are critical.

For buyers choosing between the two, DAH Solar presents a more technology-focused proposition - a predominantly TOPCon, high-bifaciality portfolio with better average thermal performance and a slightly longer average warranty at 29.5 years versus 27.9 years - making it attractive for efficiency-sensitive residential and C&I applications. JA Solar, with its massive production scale, extensive product range (up to 740 Wp), and established global logistics, is the stronger candidate for large-scale utility and commercial procurements where consistent supply, competitive pricing, and recognized bankability are the primary decision criteria.

Written by claude-sonnet from the figures above.


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