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AIKO vs Solarwatt - solar panel manufacturer comparison

AIKO
China Founded 2009 Tier 1
Read the AIKO review
VS
Solarwatt
Germany Founded 1993
Read the Solarwatt review
At a glance

AIKO has the broader catalog (144 vs 44 models). AIKO leads on peak efficiency at 25.20%. Solarwatt 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.

Panel models
144 44
Highest power
805 Wp 460 Wp
Best efficiency
25.2% 23.0%
Average efficiency
23.7% 20.6%
Bifacial share
24% 50%
Average warranty
30 yrs 29 yrs
01

The two companies

Company facts, not datasheet figures
AIKO
Founded
2009
Headquarters
Shanghai, China
Tier 1 bankable
Yes
Solarwatt
Founded
1993
Headquarters
Dresden, Germany
02

Catalogue against catalogue

Averages over every model in the database
Metric AIKO Solarwatt
Catalog & Power
Panel Models 144+100 44
Max Power 805 W+345 W 460 W
Avg Power 581 W+196 W 385 W
Efficiency
Max Efficiency 25.20%+2.20 pp 23.00%
Avg Efficiency 23.65%+3.09 pp 20.56%
Reliability & Warranty
Avg Temp Coefficient -0.271%/°C+0.060 -0.330%/°C
Bifacial Share 35 (24%) 22 (50%)+26 pp
Avg Warranty 29.5 yrs+0.5 yr 29.0 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

AIKO skews to higher efficiency: 85% of lineup is 23%+

Power spread
Share of each catalogue in every power band

AIKO offers more 600W+ panels (60% of lineup)

AIKO cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>Back Contact</strong> (83%)

Solarwatt cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>PERC</strong> (77%)

04

The flagships

Highest-power models from each brand
05

Written summary

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AIKO is a Chinese manufacturer founded in 2009 and headquartered in Guangzhou, China. The company reached BloombergNEF Tier 1 bankability status in Q3 2024 and has reported a production capacity of roughly 20 GW per year, placing it firmly among the larger-scale Chinese module makers. Solarwatt was founded in 1993 and is headquartered in Dresden, Germany, where it built a reputation as a premium European brand. However, in August 2024 Solarwatt closed its 300 MW Dresden manufacturing plant, citing pressure from cheaper Chinese imports, and has since shifted production abroad. Unlike AIKO, Solarwatt does not appear on current BloombergNEF Tier 1 lists, reflecting its far smaller production footprint. On institutional scale and bankability, AIKO carries the stronger standing.

AIKO's catalog is built entirely around its proprietary ABC (All Back Contact) N-type cell technology, which eliminates front-side busbars to maximize light capture and reported module efficiencies above 24%. Its Neostar series targets premium residential rooftops, while the higher-wattage Comet series addresses commercial and industrial rooftop applications. The Infinite bifacial line pushes efficiency further for more demanding installations. Solarwatt by contrast is best known for its glass-glass panel construction - a format it pioneered as far back as 1998 - offering exceptional durability and a 30-year combined product and performance warranty. Its range is focused squarely on premium residential and prosumer buyers who prioritize longevity and German engineering heritage over outright efficiency records.

For a typical buyer in 2025, AIKO is the more straightforward recommendation where maximizing output per square meter and long-term bankability matter, particularly for residential or commercial rooftops with limited space. Solarwatt remains a credible choice for buyers who value robust glass-glass durability and a strong warranty, but the closure of its German factory introduces supply-chain questions that buyers and project financiers should weigh carefully.

Generated by Claude Sonnet · 2026-05-14

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 179 AIKO 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.