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ASM vs KIOTO Solar - solar panel manufacturer comparison

ASM
Australia Founded 2009
Read the ASM review
VS
KIOTO Solar
Austria Founded 1991
Read the KIOTO Solar review
At a glance

KIOTO Solar has the broader catalog (7 vs 1 models). KIOTO Solar leads on peak efficiency at 22.83%. KIOTO Solar leans bifacial (57% 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 7
Highest power
170 Wp 450 Wp
Best efficiency
16.0% 22.8%
Average efficiency
16.0% 22.5%
Bifacial share
0% 57%
Average warranty
- 27 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
KIOTO Solar

KIOTO Solar (KIOTO Photovoltaics GmbH) is an Austrian manufacturer of photovoltaic modules, producing panels exclusively at its facility in St. Veit an der Glan, Carinthia. The company traces its roots to 1991 as part of the Sonnenkraft group, with PV module production beginning in 2005. It is the market leader for PV...

Founded
1991
Headquarters
St. Veit an der Glan, Austria
Annual capacity
<1 GW/year
Employees
201-500
02

Catalogue against catalogue

Averages over every model in the database
Metric ASM KIOTO Solar
Catalog & Power
Panel Models 1 7+6
Max Power 170 W 450 W+280 W
Avg Power 170 W 446 W+276 W
Efficiency
Max Efficiency 16.00% 22.83%+6.83 pp
Avg Efficiency 16.00% 22.53%+6.53 pp
Reliability & Warranty
Avg Temp Coefficient -0.438%/°C -0.309%/°C+0.129
Bifacial Share 0 (0%) 4 (57%)+57 pp
Avg Warranty - 27.1 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
Power spread
Share of each catalogue in every power band
ASM cell technology
Share of their models by cell architecture
KIOTO Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>TOPCon</strong> (100%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

ASM, formally Australian Solar Manufacturing Pty Ltd, is a small-scale Australian assembler founded in 2009 and based in Victoria. Rather than fabricating photovoltaic cells from scratch, the company imports components sourced from Germany, Japan, the United States, and China and assembles finished modules domestically. Its catalogue covers monocrystalline panels in roughly the 170-200 Wp range - a power class that reflects an earlier stage of module development - and the company positions itself primarily on the "Made in Australia" proposition. ASM does not appear on any published BloombergNEF Tier 1 list, and its manufacturing scale is modest by global standards. KIOTO Solar, operating as KIOTO Photovoltaics GmbH and part of Austria's Sonnenkraft group, has a considerably longer history: it traces its roots to 1991 and began dedicated PV module production in 2005. After KIOTO and Sonnenkraft formally joined forces in 2020, the combined group expanded its Austrian facilities to a reported annual capacity of around 340 MW. KIOTO is the market leader in Austria and distributes across Europe, though it likewise does not feature on mainstream Tier 1 bankability rankings. In terms of institutional footprint, KIOTO is the larger and more established entity.

On the product side, ASM's catalogue is centred on straightforward monocrystalline modules suited to small residential and light commercial rooftop installations in the Australian market. KIOTO's range is broader: the company offers standard mono modules, PERC half-cut variants confirmed at efficiencies reaching around 22%, glass-glass configurations, and building-integrated photovoltaic solutions - covering residential rooftops through to mid-scale commercial projects across Europe. KIOTO has not publicly confirmed a TOPCon product line as of the available information.

For a buyer outside Australia, KIOTO is the natural default in 2025: it offers more modern cell technology, higher wattage options, a wider product range, and a longer track record in a competitive European market. ASM's value proposition is specific - local assembly and Australian content - and is largely irrelevant beyond that market. Within Australia, buyers prioritising domestic origin may find ASM relevant, but should weigh the relatively older module specifications against KIOTO or other internationally bankable alternatives.

Generated by Claude Sonnet · 2026-06-02

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 KIOTO 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.