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

# GCL vs Longi Solar

Longi Solar has the broader catalog (255 vs 232 models). Longi Solar leads on peak efficiency at 25.00%. GCL leans bifacial (65% of lineup).


## The two companies


| Attribute | GCL | Longi Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Suzhou/Hong Kong | Xi'an, Shaanxi |
| Founded | 1990 | 2000 |
| Employees | 6000+ | 37,853 |
| Annual capacity | 30+ GW/year | 85-90 GW/year |
| Tier 1 | yes | yes |
| Listed | Hong Kong Stock Exchange/Shenzhen Stock Exchange: 03800.HK/002506.SZ | Shanghai Stock Exchange: 601012 |
| Website | [http://www.gcltech.com/](http://www.gcltech.com/) | [https://www.longi.com](https://www.longi.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.

LONGi Green Energy Technology Co., Ltd. is a world-leading solar technology company that manufactures monocrystalline silicon wafers and modules. The company is committed to providing high-efficiency and reliable clean energy solutions for large-scale power plants, various industries, and households. LONGi aims to be...


## Catalog & Power


| Measure | GCL | Longi Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 232 | 255 | +23 |
| Max Power | 740 W | 670 W | +70 W |
| Avg Power | 558 W | 544 W | +15 W |


## Efficiency


| Measure | GCL | Longi Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.50% | 25.00% | +0.50 pp |
| Avg Efficiency | 22.03% | 22.65% | +0.62 pp |


## Reliability & Warranty


| Measure | GCL | Longi Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.320%/°C | -0.291%/°C | +0.029 |
| Bifacial Share | 151 (65%) | 101 (40%) | +25 pp |
| Avg Warranty | 28.4 yrs | 27.8 yrs | +0.5 yr |


## Efficiency distribution

Longi Solar skews to higher efficiency: 43% of lineup is 23%+


| Efficiency band | GCL | Longi Solar |
| --- | --- | --- |
| \<20% | 2 (0.9%) | 3 (1.2%) |
| 20-21% | 43 (18.5%) | 26 (10.2%) |
| 21-22% | 73 (31.5%) | 47 (18.4%) |
| 22-23% | 48 (20.7%) | 70 (27.5%) |
| 23%+ | 66 (28.4%) | 109 (42.7%) |


## Power distribution

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


| Power band | GCL | Longi Solar |
| --- | --- | --- |
| \<400W | 6 (2.6%) | 8 (3.1%) |
| 400-499W | 60 (25.9%) | 81 (31.8%) |
| 500-599W | 63 (27.2%) | 70 (27.5%) |
| 600-699W | 81 (34.9%) | 96 (37.6%) |
| 700W+ | 22 (9.5%) | 0 |


## Cell technology

Dominant cell tech: **TOPCon** (47%)

Dominant cell tech: **N-type** (42%)


| Technology | GCL | Longi Solar |
| --- | --- | --- |
| TOPCon | 108 (46.6%) | 0 |
| PERC | 102 (44.0%) | 51 (20.0%) |
| N-type | 10 (4.3%) | 107 (42.0%) |
| HJT | 7 (3.0%) | 0 |
| BIPV | 5 (2.2%) | 0 |
| Unknown | 0 | 55 (21.6%) |
| Back Contact | 0 | 42 (16.5%) |


## 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, Longi Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 | 24.8 | -0.260 | Monocrystalline |
| 2 | [LR8-66HYD-670M](https://comparepv.com/panel/longi-lr8-66hyd-670m) | 670 | 24.8 | -0.260 | Monocrystalline |
| 3 | [LR7-72HVH-670M](https://comparepv.com/panel/longi-lr7-72hvh-670m) | 670 | 24.8 | -0.260 | Monocrystalline |
| 4 | [LR7-72HVHF-665M](https://comparepv.com/panel/longi-lr7-72hvhf-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 5 | [LR7-72HVDF-665M](https://comparepv.com/panel/longi-lr7-72hvdf-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 6 | [LR8-66HVD-665M](https://comparepv.com/panel/longi-lr8-66hvd-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 7 | [LR8-66HYD-665M](https://comparepv.com/panel/longi-lr8-66hyd-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 8 | [LR7-72HVD-665M](https://comparepv.com/panel/longi-lr7-72hvd-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 9 | [LR7-72HVH-665M](https://comparepv.com/panel/longi-lr7-72hvh-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 10 | [LR7-72HVHF-660M](https://comparepv.com/panel/longi-lr7-72hvhf-660m) | 660 | 24.4 | -0.260 | Monocrystalline |


## Summary

GCL Technology Holdings Limited (formerly GCL-Poly Energy Holdings Limited) is a Hong Kong-headquartered energy conglomerate with roots going back to 2006, listed on the Hong Kong Stock Exchange since 2007. Its manufacturing facilities are spread across mainland China, including Suzhou and Xuzhou. The group is one of the world's largest polysilicon producers - holding an estimated 13% share of the global solar silicon market as of 2023 - and its module division, GCL System Integration (GCL SI), has built annual module production capacity of around 30 GW. GCL is recognized as a Tier 1 manufacturer. LONGi Green Energy Technology was founded on February 14, 2000, by Li Zhenguo in Xi'an, Shaanxi, China. It consistently ranks among the world's largest solar module manufacturers: combined annual production capacity across wafers, cells, and modules exceeds 110 GW, and the company shipped more than 63 GW of solar products in just the first nine months of 2025. LONGi holds BloombergNEF Tier 1 status - confirmed for Q2, Q3, and Q4 2025 - and has earned the AAA rating in PV ModuleTech Bankability Reports for the 24th consecutive quarter as of Q4 2025, giving it a measurably stronger institutional footprint than GCL.

GCL SI targets a broad range of use cases, from residential rooftop installations to commercial C&I and large utility-scale ground-mount projects. Its product portfolio spans p-type PERC and n-type TOPCon modules; at Intersolar Europe 2025 the company showcased the GPC2.0 series, rated at 660 W with a claimed cell efficiency of 27.5%. LONGi's commercial lineup is anchored by the Hi-MO series, built on the proprietary HPBC (Hybrid Passivated Back Contact) technology and the newer HPBC 2.0, which achieves mass-production module efficiency of up to 24.8% according to the company. LONGi also markets the EcoLife back-contact series targeting premium residential and C&I buyers. LONGi modules are widely distributed globally and frequently specified in utility-scale projects supported by non-recourse bank financing, underpinned by its strong and consistent bankability scores.

For international buyers - whether residential installers or large-scale project developers - both brands are credible, vertically integrated Chinese manufacturers with global reach. LONGi's clear advantage lies in independently validated performance results and its uninterrupted AAA bankability track record, making it the lower-risk choice for bank-financed projects where lender confidence matters. GCL SI brings a compelling vertically integrated supply chain anchored in its own polysilicon production and is actively competing on next-generation cell technologies, which may translate into attractive pricing. Where bankability, long-term warranty security, and institutional confidence are the deciding factors, LONGi holds the edge; where price-per-watt and emerging cell technology are the priority, GCL SI is a serious contender worth evaluating alongside LONGi.

Written by claude-sonnet from the figures above.


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

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