---
title: "GCL vs JS Solar - Brand Comparison | ComparePV"
description: "Compare GCL vs JS Solar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/gcl-vs-js-solar"
image: "https://comparepv.com/og/compare/manufacturers/gcl/js-solar.png"
---

# GCL vs JS Solar

GCL has the broader catalog (232 vs 137 models). GCL leads on peak efficiency at 24.50%. GCL leans bifacial (65% of lineup).


## The two companies


| Attribute | GCL | JS Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Suzhou/Hong Kong | Jinhua |
| Founded | 1990 | 2011 |
| Employees | 6000+ |  |
| Annual capacity | 30+ GW/year |  |
| Tier 1 | yes | no |
| Listed | Hong Kong Stock Exchange/Shenzhen Stock Exchange: 03800.HK/002506.SZ |  |
| Website | [http://www.gcltech.com/](http://www.gcltech.com/) | [https://www.jssolar.com](https://www.jssolar.com) |

GCL is a global company focusing on green energy and high-efficiency photovoltaic materials. They are known for their innovation in polysilicon and wafer technologies, with a focus on low-carbon solutions. GCL is committed to building a low-carbon PV value chain and advancing global clean energy transformation.


## Catalog & Power


| Measure | GCL | JS Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 232 | 137 | +95 |
| Max Power | 740 W | 670 W | +70 W |
| Avg Power | 558 W | 430 W | +128 W |


## Efficiency


| Measure | GCL | JS Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.50% | 22.45% | +2.05 pp |
| Avg Efficiency | 22.03% | 20.03% | +1.99 pp |


## Reliability & Warranty


| Measure | GCL | JS Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.320%/°C | -0.335%/°C | +0.015 |
| Bifacial Share | 151 (65%) | 12 (9%) | +56 pp |
| Avg Warranty | 28.4 yrs | 25.1 yrs | +3.2 yr |


## Efficiency distribution

GCL skews to higher efficiency: 28% of lineup is 23%+


| Efficiency band | GCL | JS Solar |
| --- | --- | --- |
| \<20% | 2 (0.9%) | 44 (32.1%) |
| 20-21% | 43 (18.5%) | 49 (35.8%) |
| 21-22% | 73 (31.5%) | 38 (27.7%) |
| 22-23% | 48 (20.7%) | 6 (4.4%) |
| 23%+ | 66 (28.4%) | 0 |


## Power distribution

GCL offers more 600W+ panels (44% of lineup)


| Power band | GCL | JS Solar |
| --- | --- | --- |
| \<400W | 6 (2.6%) | 54 (39.4%) |
| 400-499W | 60 (25.9%) | 44 (32.1%) |
| 500-599W | 63 (27.2%) | 32 (23.4%) |
| 600-699W | 81 (34.9%) | 7 (5.1%) |
| 700W+ | 22 (9.5%) | 0 |


## Cell technology

Dominant cell tech: TOPCon (47%)

Dominant cell tech: PERC (39%)


| Technology | GCL | JS Solar |
| --- | --- | --- |
| TOPCon | 108 (46.6%) | 8 (5.8%) |
| PERC | 102 (44.0%) | 53 (38.7%) |
| N-type | 10 (4.3%) | 0 |
| HJT | 7 (3.0%) | 0 |
| BIPV | 5 (2.2%) | 0 |
| Unknown | 0 | 76 (55.5%) |


## Top panels, GCL


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [GCL-NT12/66GDF-740](https://comparepv.com/panel/gcl-gcl-nt12-66gdf-740) | 740 | 23.8 | -0.290 | Monocrystalline |
| 2 | [GCL-NT12/66GDF-735](https://comparepv.com/panel/gcl-gcl-nt12-66gdf-735) | 735 | 23.7 | -0.290 | Monocrystalline |
| 3 | [GCL-NT12/66GDF-730](https://comparepv.com/panel/gcl-gcl-nt12-66gdf-730) | 730 | 23.5 | -0.290 | Monocrystalline |
| 4 | [NT12/66GDF-730](https://comparepv.com/panel/gcl-nt12-66gdf-730) | 730 | 23.5 | -0.290 | Monocrystalline |
| 5 | [GCL-NT12/66GDF-725](https://comparepv.com/panel/gcl-gcl-nt12-66gdf-725) | 725 | 23.3 | -0.290 | Monocrystalline |
| 6 | [NT12/66GDF-725](https://comparepv.com/panel/gcl-nt12-66gdf-725) | 725 | 23.3 | -0.290 | Monocrystalline |
| 7 | [GCL-NT12/66GDF 725](https://comparepv.com/panel/gcl-gcl-nt12-66gdf-725-1) | 725 | 23.3 | -0.290 | Monocrystalline |
| 8 | [GCL-NH12/66GDF-720](https://comparepv.com/panel/gcl-gcl-nh12-66gdf-720) | 720 | 23.2 | -0.240 | Monocrystalline |
| 9 | [GCL-NT12/66GDF-720](https://comparepv.com/panel/gcl-gcl-nt12-66gdf-720) | 720 | 23.2 | -0.290 | Monocrystalline |
| 10 | [NT12/66GDF-720](https://comparepv.com/panel/gcl-nt12-66gdf-720) | 720 | 23.2 | -0.290 | Monocrystalline |


## Top panels, JS Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [JS210MHC132-670](https://comparepv.com/panel/js-solar-js210mhc132-670) | 670 | 21.6 | -0.340 | Monocrystalline |
| 2 | [JS210MHC132-665](https://comparepv.com/panel/js-solar-js210mhc132-665) | 665 | 21.4 | -0.340 | Monocrystalline |
| 3 | [JS210MHC132-660](https://comparepv.com/panel/js-solar-js210mhc132-660) | 660 | 21.2 | -0.340 | Monocrystalline |
| 4 | [JS210MHC132-655](https://comparepv.com/panel/js-solar-js210mhc132-655) | 655 | 21.1 | -0.340 | Monocrystalline |
| 5 | [JS210MHC132-650](https://comparepv.com/panel/js-solar-js210mhc132-650) | 650 | 20.9 | -0.340 | Monocrystalline |
| 6 | [JS210MHC120-605](https://comparepv.com/panel/js-solar-js210mhc120-605) | 605 | 21.4 | -0.340 | Monocrystalline |
| 7 | [JS210MHC120-600](https://comparepv.com/panel/js-solar-js210mhc120-600) | 600 | 21.2 | -0.340 | Monocrystalline |
| 8 | [JS210MHC120-595](https://comparepv.com/panel/js-solar-js210mhc120-595) | 595 | 21.0 | -0.340 | Monocrystalline |
| 9 | [JS210MHC120-590](https://comparepv.com/panel/js-solar-js210mhc120-590) | 590 | 20.8 | -0.340 | Monocrystalline |
| 10 | [JS210MHC120-585](https://comparepv.com/panel/js-solar-js210mhc120-585) | 585 | 20.7 | -0.340 | Monocrystalline |


## Summary

GCL is a Chinese manufacturer operating under the GCL Group, one of China's largest energy conglomerates with roots stretching back to the 1990s. Its solar module arm, GCL System Integration Technology (GCL-SI), has been recognized by BloombergNEF as a Tier 1 PV manufacturer, confirming its bankability for project finance by independent commercial lenders. Annual module production capacity is reported at approximately 30 GW, placing GCL among the world's largest solar panel producers, with factories in China and Vietnam and commercial reach across six continents. JS Solar, by contrast, was founded in 2007 in Wuxi, Jiangsu Province, and operates at a considerably smaller scale, with annual module exports reported at roughly 2 GW. JS Solar does not appear on publicly available BloombergNEF Tier 1 lists, placing it in a mid-tier category that is less suitable for institutionally financed projects. On the metric of global institutional footprint, GCL holds a clear and significant lead.

GCL's current lineup covers the full range of solar deployment contexts - compact residential panels around 370 W, mid-range commercial modules in the 540-560 W class, and high-power utility-scale formats reaching 660-680 W. Recent product releases lean heavily on n-type TOPCon cell technology, delivering module efficiencies in the 22-25% range, with both monofacial and bifacial variants available for rooftop and ground-mount applications. JS Solar fields a broad catalog of over 130 models spanning 200 W to 670 W, but its technology mix remains predominantly PERC, with TOPCon accounting for only a small share of the portfolio. Average module efficiency sits around 20%, with top-tier models reaching 22.4%. JS Solar also bundles inverters, mounting structures, and energy storage systems under one roof, which can simplify procurement for integrators looking for a single-vendor solution across residential and light commercial projects.

For utility-scale developers and EPCs that require bankable equipment for debt-financed projects, GCL is the stronger default given its confirmed Tier 1 status and production scale. For smaller installers focused on residential or C&I rooftop work in cost-sensitive markets, JS Solar can offer competitive value, though buyers should verify current warranty terms and in-country service coverage before committing. The two brands are not interchangeable at the institutional level, but for straightforward rooftop installations the practical performance gap is modest.

Written by claude-sonnet from the figures above.


## Other comparisons

- [GCL vs A.B. Energy](https://comparepv.com/gcl-vs-a-b-energy)
- [AE Solar vs JS Solar](https://comparepv.com/ae-solar-vs-js-solar)
- [GCL vs AEET](https://comparepv.com/gcl-vs-aeet)
- [AIKO vs JS Solar](https://comparepv.com/aiko-vs-js-solar)
- [GCL vs AKCOME](https://comparepv.com/gcl-vs-akcome)
- [ARTsolar vs JS Solar](https://comparepv.com/artsolar-vs-js-solar)


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Source: https://comparepv.com/gcl-vs-js-solar

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