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

# JA Solar vs Maxeon

JA Solar has the broader catalog (504 vs 36 models). JA Solar leads on peak efficiency at 24.80%.


## The two companies


| Attribute | JA Solar | Maxeon |
| --- | --- | --- |
| Country | China | Singapore |
| Headquarters | Beijing | Singapore |
| Founded | 2005 | 2020 |
| Employees | 37,289 |  |
| Annual capacity | 100+ GW/year |  |
| Tier 1 | yes | yes |
| Listed | SZSE: 002459 | NASDAQ: MAXN |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.maxeon.com](https://www.maxeon.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 | Maxeon | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 36 | +468 |
| Max Power | 740 W | 555 W | +185 W |
| Avg Power | 456 W | 444 W | +13 W |


## Efficiency


| Measure | JA Solar | Maxeon | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 24.00% | +0.80 pp |
| Avg Efficiency | 21.13% | 21.36% | +0.23 pp |


## Reliability & Warranty


| Measure | JA Solar | Maxeon | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.294%/°C | +0.028 |
| Bifacial Share | 238 (47%) | 19 (53%) | +6 pp |
| Avg Warranty | 27.9 yrs | 31.4 yrs | +3.5 yr |


## Efficiency distribution

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


| Efficiency band | JA Solar | Maxeon |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 7 (19.4%) |
| 20-21% | 99 (19.6%) | 4 (11.1%) |
| 21-22% | 112 (22.2%) | 8 (22.2%) |
| 22-23% | 107 (21.2%) | 14 (38.9%) |
| 23%+ | 74 (14.7%) | 3 (8.3%) |


## Power distribution

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


| Power band | JA Solar | Maxeon |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 7 (19.4%) |
| 400-499W | 173 (34.3%) | 17 (47.2%) |
| 500-599W | 120 (23.8%) | 12 (33.3%) |
| 600-699W | 60 (11.9%) | 0 |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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

Dominant cell tech: **Back Contact** (42%)


| Technology | JA Solar | Maxeon |
| --- | --- | --- |
| PERC | 247 (49.0%) | 7 (19.4%) |
| TOPCon | 146 (29.0%) | 12 (33.3%) |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 0 |
| HJT | 5 (1.0%) | 0 |
| Back Contact | 0 | 15 (41.7%) |
| Flexible | 0 | 2 (5.6%) |


## 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, Maxeon


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SPR-P7-555-COM-S](https://comparepv.com/panel/maxeon-spr-p7-555-com-s) | 555 | 22.7 | -0.290 | Monocrystalline |
| 2 | [SPR-P7-550-COM-S](https://comparepv.com/panel/maxeon-spr-p7-550-com-s) | 550 | 22.5 | -0.290 | Monocrystalline |
| 3 | [SPR-P7-545-COM-S](https://comparepv.com/panel/maxeon-spr-p7-545-com-s) | 545 | 22.3 | -0.290 | Monocrystalline |
| 4 | [SPR-P7-540-COM-S](https://comparepv.com/panel/maxeon-spr-p7-540-com-s) | 540 | 22.1 | -0.290 | Monocrystalline |
| 5 | [SPR-P7-535-COM-S](https://comparepv.com/panel/maxeon-spr-p7-535-com-s) | 535 | 21.9 | -0.290 | Monocrystalline |
| 6 | [SPR-P7-530-COM-S](https://comparepv.com/panel/maxeon-spr-p7-530-com-s) | 530 | 21.7 | -0.290 | Monocrystalline |
| 7 | [SPR-P6-525-UPP](https://comparepv.com/panel/maxeon-spr-p6-525-upp) | 525 | 20.2 | -0.340 | Monocrystalline |
| 8 | [SPR-P6-520-UPP](https://comparepv.com/panel/maxeon-spr-p6-520-upp) | 520 | 20.0 | -0.340 | Monocrystalline |
| 9 | [SPR-P6-515-UPP](https://comparepv.com/panel/maxeon-spr-p6-515-upp) | 515 | 19.8 | -0.340 | Monocrystalline |
| 10 | [SPR-P6-510-UPP](https://comparepv.com/panel/maxeon-spr-p6-510-upp) | 510 | 19.6 | -0.340 | Monocrystalline |


## Summary

JA Solar and Maxeon occupy very different positions in the global solar PV market. JA Solar was founded in 2005 in China and has grown into one of the world's largest panel manufacturers, with annual production capacity exceeding 100 GW and a workforce of over 37,000 employees. Listed on the Shenzhen Stock Exchange, it offers a portfolio of 524 panel models with a maximum output of 740 Wp. Maxeon, by contrast, was spun off from SunPower in 2020 and is headquartered in Singapore, traded on NASDAQ. It operates with a far more focused portfolio of 36 panels and a maximum output of 555 Wp, targeting the premium end of the market. Both manufacturers hold Tier 1 bankable status, ensuring access to project financing from leading financial institutions worldwide.

On the technology side, Maxeon's primary differentiator is its Back Contact cell architecture - present in 41.7% of its lineup - which relocates metallic contacts to the rear of the cell, reducing shading losses and improving aesthetics. This translates into a slightly higher average efficiency (21.36% versus 20.87% for JA Solar) and a more favorable average temperature coefficient (-0.294%/°C versus -0.323%/°C), an advantage that compounds in warm climates or poorly ventilated installations. Maxeon also backs its panels with a longer average warranty of 31.4 years compared to JA Solar's 27.9 years. JA Solar, meanwhile, leads in scale and breadth - its dominant PERC technology (52.1% of the lineup) combined with a growing TOPCon range and a 44.3% bifacial share makes it well suited for utility-scale ground-mount projects, large commercial rooftops, and cost-sensitive residential installs where price per watt is the primary driver.

For international buyers, the choice comes down to project type and budget. JA Solar is the pragmatic option for large-scale or value-driven deployments - its manufacturing scale ensures supply reliability, broad distributor networks, and competitive pricing across residential, C&I, and utility-scale segments. Maxeon is a premium pick for space-constrained residential rooftops, design-led builds, or investors who prioritize longevity, low degradation, and superior thermal performance over upfront cost savings. One important caveat: Maxeon has faced financial headwinds following the bankruptcy of its former key customer SunPower, and buyers should verify local distributor availability and warranty backstop arrangements before committing to significant volumes.

Written by claude-sonnet from the figures above.


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- [AIKO vs Maxeon](https://comparepv.com/aiko-vs-maxeon)
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- [ARTsolar vs Maxeon](https://comparepv.com/artsolar-vs-maxeon)


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

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