--- title: "GCL vs SunKean - Brand Comparison | ComparePV" description: "Compare GCL vs SunKean solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/gcl-vs-sunkean" --- # GCL vs SunKean GCL has the broader catalog (232 vs 57 models). GCL leads on peak efficiency at 24.50%. SunKean leans bifacial (77% of lineup). ## The two companies | Attribute | GCL | SunKean | | --- | --- | --- | | Country | China | China | | Headquarters | Suzhou/Hong Kong | Wuxi, Jiangsu | | Founded | 1990 | 2013 | | Employees | 6000+ | 200+ | | Annual capacity | 30+ GW/year | | | Tier 1 | yes | | | Listed | Hong Kong Stock Exchange/Shenzhen Stock Exchange: 03800.HK/002506.SZ | | | Website | [http://www.gcltech.com/](http://www.gcltech.com/) | [https://www.sunkean.com](https://www.sunkean.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. SUNKEAN specializes in providing sustainable energy connection solutions to global customers. They offer a range of products including solar cables, wire harnesses, and related connectors for photovoltaic, energy storage, and charging sectors. As of 2025, SUNKEAN employs over 200 people and operates a production... ## Catalog & Power | Measure | GCL | SunKean | Margin | | --- | --- | --- | --- | | Panel Models | 232 | 57 | +175 | | Max Power | 740 W | 700 W | +40 W | | Avg Power | 558 W | 447 W | +112 W | ## Efficiency | Measure | GCL | SunKean | Margin | | --- | --- | --- | --- | | Max Efficiency | 24.50% | 23.52% | +0.98 pp | | Avg Efficiency | 22.03% | 21.25% | +0.78 pp | ## Reliability & Warranty | Measure | GCL | SunKean | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | -0.320%/°C | -0.300%/°C | +0.020 | | Bifacial Share | 151 (65%) | 44 (77%) | +12 pp | | Avg Warranty | 28.4 yrs | 28.9 yrs | +0.6 yr | ## Efficiency distribution GCL skews to higher efficiency: 28% of lineup is 23%+ | Efficiency band | GCL | SunKean | | --- | --- | --- | | \<20% | 2 (0.9%) | 9 (15.8%) | | 20-21% | 43 (18.5%) | 7 (12.3%) | | 21-22% | 73 (31.5%) | 16 (28.1%) | | 22-23% | 48 (20.7%) | 20 (35.1%) | | 23%+ | 66 (28.4%) | 5 (8.8%) | ## Power distribution GCL offers more 600W+ panels (44% of lineup) | Power band | GCL | SunKean | | --- | --- | --- | | \<400W | 6 (2.6%) | 11 (19.3%) | | 400-499W | 60 (25.9%) | 35 (61.4%) | | 500-599W | 63 (27.2%) | 6 (10.5%) | | 600-699W | 81 (34.9%) | 4 (7.0%) | | 700W+ | 22 (9.5%) | 1 (1.8%) | ## Cell technology Dominant cell tech: **TOPCon** (47%) Dominant cell tech: **TOPCon** (39%) | Technology | GCL | SunKean | | --- | --- | --- | | TOPCon | 108 (46.6%) | 22 (38.6%) | | PERC | 102 (44.0%) | 13 (22.8%) | | N-type | 10 (4.3%) | 8 (14.0%) | | HJT | 7 (3.0%) | 14 (24.6%) | | BIPV | 5 (2.2%) | 0 | ## 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, SunKean | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [SKT700M12-132D5](https://comparepv.com/panel/sunkean-skt700m12-132d5) | 700 | 22.5 | -0.260 | Monocrystalline | | 2 | [SKT695M12-132D5](https://comparepv.com/panel/sunkean-skt695m12-132d5) | 695 | 22.4 | -0.260 | Monocrystalline | | 3 | [SKT690M12-132D5](https://comparepv.com/panel/sunkean-skt690m12-132d5) | 690 | 22.2 | -0.260 | Monocrystalline | | 4 | [SKT685M12-132D5](https://comparepv.com/panel/sunkean-skt685m12-132d5) | 685 | 22.1 | -0.260 | Monocrystalline | | 5 | [SKT680M12-132D5](https://comparepv.com/panel/sunkean-skt680m12-132d5) | 680 | 21.9 | -0.260 | Monocrystalline | | 6 | [SKT555M10](https://comparepv.com/panel/sunkean-skt555m10) | 555 | 21.5 | -0.350 | Monocrystalline | | 7 | [SKT550M10](https://comparepv.com/panel/sunkean-skt550m10) | 550 | 21.3 | -0.350 | Monocrystalline | | 8 | [SKT545M10](https://comparepv.com/panel/sunkean-skt545m10) | 545 | 21.1 | -0.350 | Monocrystalline | | 9 | [SKT540M10](https://comparepv.com/panel/sunkean-skt540m10) | 540 | 20.9 | -0.350 | Monocrystalline | | 10 | [SKT535M10](https://comparepv.com/panel/sunkean-skt535m10) | 535 | 20.7 | -0.350 | Monocrystalline | ## Summary GCL (GCL System Integration Technology) is a Chinese solar manufacturer headquartered in Hefei, Anhui Province, with roots in the broader GCL Group that has been active in the photovoltaic supply chain for decades. GCL SI shipped approximately 16 GW of solar modules in 2023 according to PV Tech, making it one of the larger-volume module producers globally. The company has invested heavily in N-type TOPCon cell and module capacity, with its Funing plant reaching 12 GW of annual nameplate capacity and a planned 60 GW facility in Hefei under phased construction. While GCL SI is a significant volume player, it sits a tier below the BloombergNEF-dominant names such as Jinko, LONGi, Trina, and JA Solar in institutional recognition and bankability ranking. SunKean, also based in China (Wuxi, Jiangsu) and founded in 2013, is not a solar panel manufacturer. Web research consistently identifies SunKean as a manufacturer of solar cables, MC4 connectors, wire harnesses, and related balance-of-system connection components for photovoltaic, energy storage, and EV-charging applications. SunKean holds certifications including UL, TUV, ETL, and CE for its connector and cable product lines, and has commercial presence across Japan, Australia, Europe, and the United States. These are complementary BOS products that are installed alongside panels - not competing with them. A direct comparison of GCL versus SunKean as "solar panel manufacturers" is therefore not meaningful: GCL SI is a large-scale module producer offering TOPCon panels for residential, commercial, and utility-scale installations, while SunKean supplies the cables and connectors that connect those panels to the rest of a solar system. Buyers selecting a module brand should evaluate GCL SI on its own merits against other module makers; separately, buyers sourcing solar cables and connectors might evaluate SunKean against other BOS component suppliers. \---LINKS--- \- https://www.pv-tech.org/gcl-system-integration-ships-16gw-solar-modules-2023/ \| GCL System Integration ships 16 GW of solar modules in 2023 \| article \- https://www.pv-magazine.com/2025/01/07/gcl-si-enters-back-contact-business-with-660-w-solar-module/ \| GCL SI enters back contact business with 660 W solar module \| article \- https://www.energysage.com/solar-panels/gcl/ \| GCL Solar Panels - EnergySage profile and reviews \| review \- https://www.sunkean.com/ \| SUNKEAN - Solar Cable and MC4 Connector official site \| article \- https://www.enfsolar.com/sunkean \| SunKean Cable Co. Ltd - ENF Solar company profile \| article Sources: \- \[GCL System Integration ships 16GW of solar modules in 2023 - PV Tech\](https://www.pv-tech.org/gcl-system-integration-ships-16gw-solar-modules-2023/) \- \[GCL SI enters back contact business with 660 W solar module - pv magazine\](https://www.pv-magazine.com/2025/01/07/gcl-si-enters-back-contact-business-with-660-w-solar-module/) \- \[GCL Solar Panels - EnergySage\](https://www.energysage.com/solar-panels/gcl/) \- \[SUNKEAN - Solar Cable and MC4 Connector Solutions\](https://www.sunkean.com/) \- \[SunKean Cable Co., Ltd. - ENF Solar\](https://www.enfsolar.com/sunkean) 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 SunKean](https://comparepv.com/ae-solar-vs-sunkean) - [GCL vs AEET](https://comparepv.com/gcl-vs-aeet) - [AIKO vs SunKean](https://comparepv.com/aiko-vs-sunkean) - [GCL vs AKCOME](https://comparepv.com/gcl-vs-akcome) - [ARTsolar vs SunKean](https://comparepv.com/artsolar-vs-sunkean) --- Source: https://comparepv.com/gcl-vs-sunkean Not in this file, on the page: the distributions above drawn as charts.