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

# ASM vs GCL

GCL has the broader catalog (232 vs 1 models). GCL leads on peak efficiency at 24.50%. GCL leans bifacial (65% of lineup).


## The two companies


| Attribute | ASM | GCL |
| --- | --- | --- |
| Country | Australia | China |
| Headquarters | Hallam, Victoria | Suzhou/Hong Kong |
| Founded | 2009 | 1990 |
| Employees | 1-10 | 6000+ |
| Annual capacity |  | 30+ GW/year |
| Tier 1 | no | yes |
| Listed |  | Hong Kong Stock Exchange/Shenzhen Stock Exchange: 03800.HK/002506.SZ |
| Website | [https://www.australiansolarmanufacturing.com.au](https://www.australiansolarmanufacturing.com.au) | [http://www.gcltech.com/](http://www.gcltech.com/) |

Australian Solar Manufacturing (ASM) is a small Australian solar panel assembler that produces crystalline monocrystalline modules domestically using components sourced from Germany, Japan, the USA, and China. The company focuses on providing locally assembled PV modules tailored to Australian conditions, supporting...

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 | ASM | GCL | Margin |
| --- | --- | --- | --- |
| Panel Models | 1 | 232 | +231 |
| Max Power | 170 W | 740 W | +570 W |
| Avg Power | 170 W | 558 W | +388 W |


## Efficiency


| Measure | ASM | GCL | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 16.00% | 24.50% | +8.50 pp |
| Avg Efficiency | 16.00% | 22.03% | +6.03 pp |


## Reliability & Warranty


| Measure | ASM | GCL | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.438%/°C | -0.320%/°C | +0.118 |
| Bifacial Share | 0 (0%) | 151 (65%) | +65 pp |
| Avg Warranty | - | 28.4 yrs |  |


## Efficiency distribution

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


| Efficiency band | ASM | GCL |
| --- | --- | --- |
| \<20% | 1 (100.0%) | 2 (0.9%) |
| 20-21% | 0 | 43 (18.5%) |
| 21-22% | 0 | 73 (31.5%) |
| 22-23% | 0 | 48 (20.7%) |
| 23%+ | 0 | 66 (28.4%) |


## Power distribution

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


| Power band | ASM | GCL |
| --- | --- | --- |
| \<400W | 1 (100.0%) | 6 (2.6%) |
| 400-499W | 0 | 60 (25.9%) |
| 500-599W | 0 | 63 (27.2%) |
| 600-699W | 0 | 81 (34.9%) |
| 700W+ | 0 | 22 (9.5%) |


## Cell technology

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


| Technology | ASM | GCL |
| --- | --- | --- |
| Unknown | 1 (100.0%) | 0 |
| TOPCon | 0 | 108 (46.6%) |
| PERC | 0 | 102 (44.0%) |
| N-type | 0 | 10 (4.3%) |
| HJT | 0 | 7 (3.0%) |
| BIPV | 0 | 5 (2.2%) |


## Top panels, ASM


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ASM170M](https://comparepv.com/panel/australian-solar-manufacturing-asm170m) | 170 | 16.0 | -0.438 | Monocrystalline |


## 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 |


## Summary

GCL (Golden Concord Group, also known commercially as GCL System Integration or GCL-SI) is a Chinese manufacturer headquartered in Jiangsu province, founded in 1990. It is a confirmed BloombergNEF Tier 1 bankable module maker and is one of the larger players in global module supply, with an annual production capacity reported at around 30 GW. GCL is part of a vertically integrated conglomerate that also produces polysilicon and wafers, giving it cost advantages across the supply chain. ASM, by contrast, did not surface in any major industry reviews, Tier 1 lists, or bankability reports across multiple targeted searches - so it appears to be a niche, regional, or very recently established brand without a confirmed institutional footprint comparable to GCL.

GCL's product portfolio has evolved noticeably in recent years. Its GEMINI and LOTUS series modules have historically included both PERC and TOPCon variants, but by late 2025 the company phased out its PERC line entirely, with its commercial flagship now a bifacial double-glass TOPCon module reaching rated efficiencies of around 23.5% at 730 W - aimed primarily at utility-scale ground-mount and large commercial rooftop projects. GCL has also entered the back-contact segment and is actively developing perovskite-silicon tandem technology, signaling a long-term R-and-D commitment. ASM's technology mix, cell architecture, and target segments remain unconfirmed from available public sources.

For a typical buyer in 2025, GCL is the clearly documentable choice: it carries recognized bankability status, has a traceable warranty structure, a large enough manufacturing base to support supply continuity, and independent test-lab recognition. Without verifiable public data on ASM's production scale, certifications, or product specifications, it is not possible to make a fair head-to-head recommendation - buyers considering ASM should request third-party test reports and confirm warranty enforceability before committing.

\---LINKS---

\- https://www.energysage.com/solar-panels/gcl/ \| GCL Solar Panels overview - EnergySage \| review

\- https://www.solarreviews.com/manufacturers/gcl-poly-(suzhou)-energy \| GCL-Poly Suzhou Energy manufacturer review - SolarReviews \| review

\- https://a1solarstore.com/blog/gcl-solar-panels-review-ascent.html \| GCL solar panels review 2025 - A1 SolarStore \| review

\- 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 module - PV Magazine \| article

\- https://www.prnewswire.com/in/news-releases/gcl-si-named-tier-1-pv-manufacturer-by-bloomberg-new-energy-finance-592124781.html \| GCL-SI named Tier 1 PV manufacturer by BloombergNEF \| article

Sources:

\- \[GCL Solar Panels - EnergySage\](https://www.energysage.com/solar-panels/gcl/)

\- \[GCL-Poly Suzhou Energy review - SolarReviews\](https://www.solarreviews.com/manufacturers/gcl-poly-(suzhou)-energy)

\- \[GCL solar panels review 2025 - A1 SolarStore\](https://a1solarstore.com/blog/gcl-solar-panels-review-ascent.html)

\- \[GCL SI enters back contact business with 660 W module - PV Magazine\](https://www.pv-magazine.com/2025/01/07/gcl-si-enters-back-contact-business-with-660-w-solar-module/)

\- \[GCL-SI named Tier 1 PV manufacturer by BloombergNEF - PR Newswire\](https://www.prnewswire.com/in/news-releases/gcl-si-named-tier-1-pv-manufacturer-by-bloomberg-new-energy-finance-592124781.html)

Written by claude-sonnet from the figures above.


## Other comparisons

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


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Source: https://comparepv.com/asm-vs-gcl

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