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

# JA Solar vs Peimar

JA Solar has the broader catalog (504 vs 5 models). JA Solar leads on peak efficiency at 24.80%.


## The two companies


| Attribute | JA Solar | Peimar |
| --- | --- | --- |
| Country | China | Italy |
| Headquarters | Beijing | Torino |
| Founded | 2005 | 2012 |
| Employees | 37,289 | 50 |
| Annual capacity | 100+ GW/year | 0.3 GW/year |
| Tier 1 | yes | no |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.peimar.com](https://www.peimar.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...

Peimar is an Italian manufacturer of photovoltaic modules. Based in Turin, the company designs and produces solar panels for residential, commercial, and utility-scale applications, with a focus on the European market.


## Catalog & Power


| Measure | JA Solar | Peimar | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 5 | +499 |
| Max Power | 740 W | 595 W | +145 W |
| Avg Power | 456 W | 440 W | +16 W |


## Efficiency


| Measure | JA Solar | Peimar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.04% | +1.76 pp |
| Avg Efficiency | 21.13% | 20.23% | +0.91 pp |


## Reliability & Warranty


| Measure | JA Solar | Peimar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.346%/°C | +0.024 |
| Bifacial Share | 238 (47%) | 2 (40%) | +7 pp |
| Avg Warranty | 27.9 yrs | 30.0 yrs | +2.1 yr |


## Efficiency distribution

Peimar skews to higher efficiency: 40% of lineup is 23%+


| Efficiency band | JA Solar | Peimar |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 2 (40.0%) |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 1 (20.0%) |
| 22-23% | 107 (21.2%) | 0 |
| 23%+ | 74 (14.7%) | 2 (40.0%) |


## Power distribution

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


| Power band | JA Solar | Peimar |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 2 (40.0%) |
| 400-499W | 173 (34.3%) | 1 (20.0%) |
| 500-599W | 120 (23.8%) | 2 (40.0%) |
| 600-699W | 60 (11.9%) | 0 |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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

Dominant cell tech: **PERC** (60%)


| Technology | JA Solar | Peimar |
| --- | --- | --- |
| PERC | 247 (49.0%) | 3 (60.0%) |
| TOPCon | 146 (29.0%) | 2 (40.0%) |
| N-type | 90 (17.9%) | 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, Peimar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [OR10H595MNDB](https://comparepv.com/panel/peimar-or10h595mndb) | 595 | 23.0 | -0.290 | Monocrystalline |
| 2 | [SA500M (FB)](https://comparepv.com/panel/peimar-sa500m-fb) | 500 | 21.3 | -0.290 | Monocrystalline |
| 3 | [OR10H450MNDB (FB)](https://comparepv.com/panel/peimar-or10h450mndb-fb) | 450 | 23.0 | -0.290 | Monocrystalline |
| 4 | [SG330P](https://comparepv.com/panel/peimar-sg330p) | 330 | 17.0 | -0.430 | Polycrystalline |
| 5 | [SG325P](https://comparepv.com/panel/peimar-sg325p) | 325 | 16.7 | -0.430 | Polycrystalline |


## Summary

JA Solar was founded in 2005 in China and is listed on the Shenzhen Stock Exchange (SZSE). With over 37,000 employees and a production capacity exceeding 100 GW, the company consistently ranks among the world's top solar module manufacturers - in Wood Mackenzie's H1 2025 global ranking, it jointly held the top position alongside Trinasolar. Its Tier 1 bankable status makes it a standard reference for project finance across residential, commercial, and utility-scale segments worldwide. Peimar, by contrast, is a much smaller Italian manufacturer established in 2012, employing approximately 50 people and operating with an annual production capacity of 0.3 GW. The company does not hold Tier 1 status, but its defining characteristic is that all manufacturing stages are carried out at its facility in Castegnato, Brescia, in northern Italy - a meaningful differentiator for buyers prioritizing European supply chains, reduced carbon footprint credentials, or compliance with local content requirements in EU-funded projects.

JA Solar's portfolio of over 520 panel models spans a wide power range up to 740 Wp, with PERC cells still representing the majority of the lineup at approximately 52%, while the TOPCon-based Deep Blue 4.0 series and newer generations push maximum efficiency to 24.4% against a portfolio average of around 20.9%. The company's scale, Tier 1 status, and recognition as a Top Brand PV across multiple European markets including Poland make it the natural default for utility-scale ground-mount projects and large commercial C&I installations where bankability, product availability, and competitive pricing driven by 100+ GW manufacturing capacity are decisive factors. Peimar's compact portfolio of eight models is heavily weighted toward TOPCon technology (87.5% of the lineup), delivering an average efficiency of 22.8% and a maximum of 23.04% - well above JA Solar's portfolio average. With 87.5% of panels being bifacial, an average output of 565 Wp, and a temperature coefficient of -0.29%/°C (versus -0.32%/°C for JA Solar), Peimar's modules are well suited to space-constrained residential rooftop installations, premium commercial projects, and bifacial ground-mount applications where rear-side gain matters.

For international buyers choosing between the two, the decision hinges on scale and strategic priorities. JA Solar is the more practical choice for large-scale deployments, where its bankability, global logistics reach, and cost efficiency driven by massive manufacturing scale provide clear advantages. Peimar is the stronger option for European buyers who value domestic manufacturing provenance, are willing to pay a premium for a verified Italian producer, and are working on projects where high efficiency in limited space, supply chain transparency, or European origin labeling carries more weight than the lowest cost per watt.

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 Peimar](https://comparepv.com/ae-solar-vs-peimar)
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- [AIKO vs Peimar](https://comparepv.com/aiko-vs-peimar)
- [JA Solar vs AKCOME](https://comparepv.com/ja-solar-vs-akcome)
- [ARTsolar vs Peimar](https://comparepv.com/artsolar-vs-peimar)


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

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