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

# Enphase vs JA Solar

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


## The two companies


| Attribute | Enphase | JA Solar |
| --- | --- | --- |
| Country | USA | China |
| Headquarters | Fremont, California | Beijing |
| Founded | 2006 | 2005 |
| Employees | 2000-3000 | 37,289 |
| Annual capacity |  | 100+ GW/year |
| Tier 1 | yes | yes |
| Listed | NASDAQ: ENPH | SZSE: 002459 |
| Website | [https://www.enphase.com](https://www.enphase.com) | [https://www.jasolar.com](https://www.jasolar.com) |

Enphase Energy is an American energy technology company. Founded in 2006, Enphase develops and manufactures solar micro-inverters, battery energy storage, and EV charging stations primarily for residential customers. Their microinverter technology has transformed the solar industry by converting sunlight into a safe...

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 | Enphase | 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 | Enphase | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | - | 24.80% |  |
| Avg Efficiency | - | 21.13% |  |


## Reliability & Warranty


| Measure | Enphase | 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 | Enphase | 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 | Enphase | 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 | Enphase | 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

Enphase and JA Solar occupy fundamentally different niches within the solar industry, making a direct head-to-head comparison less straightforward than it might initially appear. Enphase, founded in 2006 in the United States and listed on NASDAQ, manufactures no solar panels at all - the company is the global leader in microinverter technology, having shipped over 81.5 million microinverters to date with systems deployed in more than 160 countries. Employing between 2,000 and 3,000 people and maintaining domestic manufacturing capacity in the United States, Enphase holds approximately 60% of the US residential inverter market. JA Solar, founded one year earlier in 2005 in China and listed on the Shenzhen Stock Exchange (SZSE), is one of the world's largest photovoltaic module manufacturers, employing over 37,000 people and operating with a production capacity exceeding 100 GW per year. Its portfolio spans 524 module models, reaching a maximum output of 740 Wp and a peak efficiency of 24.4%, with PERC as the dominant cell technology at over 52% of models and bifacial designs representing approximately 44% of the range. Both companies carry Tier 1 bankable status, qualifying their projects for institutional financing from major lenders.

Enphase's defining strength is its IQ8 series microinverter platform, which features grid-forming technology that enables solar systems to maintain power during grid outages without requiring battery storage - a capability that has driven strong uptake in residential markets globally. The newest IQ9N-3P, the company's first GaN-powered commercial microinverter designed natively for three-phase 480Y/277 V grids, signals a deliberate expansion into commercial and industrial (C&I) applications. Enphase systems are particularly well-suited to residential rooftop installations with partial shading, complex multi-plane roof layouts, or resilience requirements, since each panel operates independently with panel-level monitoring. JA Solar addresses the full project spectrum through its broad module portfolio: with average panel output around 442 Wp, a maximum efficiency of 24.4%, an average temperature coefficient of -0.32%/C, and an average warranty of nearly 28 years, the brand is especially competitive for utility-scale ground-mount projects, large commercial rooftops, and C&I installations where cost per watt, bifacial energy gain, and volume availability are the decisive factors. JA Solar ranked second globally in module shipments and earned Top Performer status from PVEL for the tenth time in 2025.

For international buyers, the choice between Enphase and JA Solar is rarely a binary one: their products are complementary rather than competing, and Enphase microinverters are routinely paired with JA Solar panels in the same installation. Buyers specifying inverter technology for residential or light commercial projects where shading, resilience, or per-panel monitoring matter most will find Enphase a strong fit. Those sourcing photovoltaic modules for large-scale or cost-sensitive projects will find JA Solar's well-validated, high-volume portfolio a compelling and bankable choice.

Written by claude-sonnet from the figures above.


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