ASM vs Sonnex Energie - solar panel manufacturer comparison
Sonnex Energie has the broader catalog (10 vs 1 models). Sonnex Energie leads on peak efficiency at 22.50%. Sonnex Energie leans bifacial (50% 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.
The two companies
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
Catalogue against catalogue
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.
What each of them builds
Dominant cell tech: <strong>TOPCon</strong> (100%)
The flagships
Written summary
ASM, founded in 2009 and headquartered in Hallam, Victoria, Australia, is a micro-scale assembler operating with a staff of between 1 and 10 employees. Rather than fabricating photovoltaic cells, ASM assembles panels domestically using imported components sourced from Germany, Japan, the United States, and China. The company holds no Tier 1 bankability designation and carries no stock exchange listing. Sonnex Energie, headquartered in Germany, is similarly non-Tier 1 and unlisted, but fields a documented portfolio of 10 commercial panel models with verifiable technical specifications. Between the two, Sonnex Energie holds the considerably stronger institutional footprint, having published datasheets, warranted product lines, and confirmed cell-technology roadmaps, whereas ASM's public product data is essentially absent.
Sonnex Energie's current lineup averages 427.5 Wp with a ceiling of 440 Wp, and achieves an average efficiency of 21.9% rising to a top of 22.5%. The entire portfolio runs on N-type TOPCon cells, which deliver inherently lower light-induced degradation than legacy PERC technology. Half the panel count is bifacial, and the standard warranty runs 30 years on both product and power - a notably generous stance for a non-Tier 1 brand. A temperature coefficient averaging -0.315%/degC is competitive for the TOPCon segment. This combination of mid-range power, high efficiency, and a long warranty positions Sonnex Energie squarely at quality-conscious residential rooftops and small commercial projects where bankability is not a strict lender requirement. ASM, by contrast, presents no aggregated wattage, efficiency, or warranty figures in its public record, making any meaningful portfolio comparison impossible.
For a typical buyer in 2025, Sonnex Energie is the more defensible default of the two. Its 440 Wp ceiling, 22.5% peak efficiency, and 30-year warranty are competitive with mid-tier European and Asian brands, and its all-TOPCon lineup reflects current best practice. ASM may suit buyers who specifically value Australian-assembled goods and have verified a product offering directly with the manufacturer, but without published specifications it cannot be evaluated on technical merit alone.
Generated by Claude Sonnet · 2026-05-13
Other brand comparisons
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.