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ASM vs GL Solar - solar panel manufacturer comparison

ASM
Australia Founded 2009
Read the ASM review
VS
GL Solar
Italy Founded 2000
Read the GL Solar review
At a glance

GL Solar has the broader catalog (13 vs 1 models). GL Solar leads on peak efficiency at 23.60%. GL Solar leans bifacial (100% of lineup).

Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.

Panel models
1 13
Highest power
170 Wp 640 Wp
Best efficiency
16.0% 23.6%
Average efficiency
16.0% 22.6%
Bifacial share
0% 100%
Average warranty
- 30 yrs
01

The two companies

Company facts, not datasheet figures
ASM

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...

Founded
2009
Headquarters
Hallam, Victoria, Australia
Employees
1-10
GL Solar

GL Solar Energy s.r.l. is a small Italian company based in Marcianise (Caserta) specializing in the design, production, and installation of photovoltaic systems for residential and industrial applications. The company also distributes solar panels and related equipment, working with major international brands such as...

Founded
2000
Headquarters
Marcianise, Italy
Employees
1-10
02

Catalogue against catalogue

Averages over every model in the database
Metric ASM GL Solar
Catalog & Power
Panel Models 1 13+12
Max Power 170 W 640 W+470 W
Avg Power 170 W 603 W+433 W
Efficiency
Max Efficiency 16.00% 23.60%+7.60 pp
Avg Efficiency 16.00% 22.61%+6.61 pp
Reliability & Warranty
Avg Temp Coefficient -0.438%/°C -0.274%/°C+0.164
Bifacial Share 0 (0%) 13 (100%)+100 pp
Avg Warranty - 30.0 yrs

An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.

03

What each of them builds

Cell technology across the market
Efficiency spread
Share of each catalogue in every efficiency band

GL Solar skews to higher efficiency: 38% of lineup is 23%+

Power spread
Share of each catalogue in every power band

GL Solar offers more 600W+ panels (77% of lineup)

ASM cell technology
Share of their models by cell architecture
GL Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>HJT</strong> (54%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

ASM, formally Australian Solar Manufacturing Pty Ltd, is a fully Australian-owned panel assembler headquartered in Hallam, Victoria, founded in 2009. The company does not manufacture photovoltaic cells itself but assembles crystalline modules domestically from components sourced in Germany, Japan, the United States, and China. Its scale is modest by global standards, serving primarily the Australian residential and small commercial rooftop market, and the brand does not appear on BloombergNEF Tier 1 lists, which typically require multi-gigawatt production and large-scale project financing history. GL Solar, operating under the brand Green Light Solar at gl.solar, is a US-based energy solutions provider that began installing residential solar around 2015, with service coverage across Arizona, Texas, Louisiana, Oklahoma, and North Carolina. Rather than manufacturing panels, GL Solar functions primarily as a residential solar installer and turnkey project integrator that sources third-party modules. On institutional footprint, neither brand carries Tier 1 bankability standing, though ASM has the longer operational history as an assembler.

ASM's documented product line centers on monocrystalline modules in the 170 W-200 W output range, suited to older or compact Australian rooftops where a locally assembled, Australian-certified panel carries regulatory and supply-chain appeal. GL Solar's panel-related offering is essentially installer-defined - the company selects panels from established manufacturers for residential rooftop systems and bundles them with energy storage and smart home technology. Because GL Solar does not publicly disclose which panels it sources or in what volume, no meaningful product-level comparison on cell technology or efficiency can be made from available data.

For a buyer shopping for a panel brand in 2025, these two entities are not straightforwardly comparable as manufacturers. ASM suits Australian buyers who specifically want a locally assembled module and accept a narrower wattage range, while GL Solar is a service provider rather than a panel source. A buyer seeking independently bankable, high-efficiency modules from a scaled producer would be better served looking beyond both brands toward established Tier 1 suppliers, as neither ASM nor GL Solar occupies a mainstream manufacturing position in the global market.

Generated by Claude Sonnet · 2026-06-10

06

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Something missing from a catalogue? Both lists are built from the datasheets in the database. If a model is absent, it has not been ingested yet.

Shop prices: See 2 GL Solar offers

Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.