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ASM vs Bisol - solar panel manufacturer comparison

ASM
Australia Founded 2009
Read the ASM review
VS
Bisol
Slovenia Founded 2004
Read the Bisol review
At a glance

Bisol has the broader catalog (12 vs 1 models). Bisol leads on peak efficiency at 23.50%.

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 12
Highest power
170 Wp 580 Wp
Best efficiency
16.0% 23.5%
Average efficiency
16.0% 21.8%
Bifacial share
0% 8%
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
Bisol

BISOL Group is a European manufacturer of high-quality photovoltaic modules headquartered in Prebold, Slovenia. Founded in 2004, it is considered Europe's leading authentic solar module producer with a production capacity of 750 MW and products distributed in over 120 countries. The company operates debt-free and has...

Founded
2004
Headquarters
Prebold, Slovenia
Annual capacity
<1 GW/year
Employees
200-500
02

Catalogue against catalogue

Averages over every model in the database
Metric ASM Bisol
Catalog & Power
Panel Models 1 12+11
Max Power 170 W 580 W+410 W
Avg Power 170 W 475 W+305 W
Efficiency
Max Efficiency 16.00% 23.50%+7.50 pp
Avg Efficiency 16.00% 21.75%+5.75 pp
Reliability & Warranty
Avg Temp Coefficient -0.438%/°C -0.291%/°C+0.147
Bifacial Share 0 (0%) 1 (8%)+8 pp
Avg Warranty - 29.6 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

Bisol skews to higher efficiency: 33% of lineup is 23%+

Power spread
Share of each catalogue in every power band
ASM cell technology
Share of their models by cell architecture
Bisol cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>PERC</strong> (58%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

ASM's identity as a solar panel manufacturer is difficult to pin down through major industry databases and credible trade press. Web searches for the brand surface either an Australian solar installation firm or ASM Pacific Technology - a Dutch-listed equipment supplier for the electronics and PV manufacturing sector rather than a module brand in its own right. Without verifiable public data on production capacity, cell technology, or bankability status, ASM can only be described as a brand with a limited institutional footprint in publicly available solar industry reporting. Bisol Group, by contrast, is a clearly identifiable European PV module manufacturer headquartered in Latkova Vas, Slovenia, founded in 2004. The company reports a production capacity of 750 MW and exports approximately 98% of its output to more than 140 countries. Bisol has actively distanced itself from the BloombergNEF Tier 1 framework - publishing a position statement arguing it is not a reliable quality indicator - which means Bisol is not typically cited on mainstream Tier 1 lists, though it holds its own quality credentials through TÜV and other European certification bodies. On institutional footprint, Bisol is the better-documented and more independently verifiable of the two brands.

Bisol's product offering centers on residential and commercial rooftop applications, where it has historically differentiated on quality rather than price. The company is known for thicker toughened glass, tight power-sorting practices designed to reduce mismatch losses, and a claimed field claim rate of just 0.01%. In 2025, Bisol introduced the BGO series, built on G12R TOPCon cell technology and capable of outputs up to 580 W, targeting residential, commercial, and light utility-scale projects where European component traceability and FER-X compliance matter. ASM's technology mix and target use cases remain unverifiable from credible third-party sources.

For a typical buyer in 2025, Bisol is the safe recommendation between these two brands, specifically for buyers in Europe or markets where European manufacturing origin carries regulatory or reputational value. Its quality credentials, TOPCon transition, and two decades of documented production history make it a reasonable premium-tier choice for rooftop and small commercial installations. ASM cannot be meaningfully recommended or dismissed in the same comparison given the absence of confirmed independent data on its modules, capacity, or bankability standing.

Generated by Claude Sonnet · 2026-06-18

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 12 Bisol 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.