Several manufacturers used KEY 2026 to introduce new module technologies, including JA Solar’s DeepBlue 5.0 TOPCon, Gokin’s AllBlack back-contact, Aiko’s upgraded Infinite ABC and SolarFabrik’s Mono S4 Halfcut BC White module.
At the centre of JA Solar’s KEY 2026 showcase was DeepBlue 5.0, the company’s fifth-generation n-type TOPCon technology. The JAM66D50 GB modules deliver up to 670 W in a double-glass bifacial design, making them suited to large commercial and industrial rooftops as well as ground-mounted systems. 
Due to a completely renewed mechanical design with a different positioning of the junction boxes (Triangular Dispersed Layout), the new module is designed to help reduce mechanical stress on the rear surface, lowering the risk of micro-cracks and breakage even under high mechanical loads, explained JA Solar speaker Gianluca Micheletto in conversation with pv Europe. Over the course of the year, JA Solar also intends to offer back-contact modules alongside its TOPCon technology, Micheletto added.
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In the premium residential rooftop segment, the Chinese manufacturer Gokin debuted its new “AllBlack” back-contact module. Featuring a grid-line-free, pure-black surface, it offers seamless architectural integration without sacrificing energy conversion.
Hans-Christoph Neidlein
Solarfabrik showcased its Mono S4 Halfcut BC White Module (485/490 W) for private and commercial applications. Senior Business Development Manager Ricarda Gutsch told pv Europe that coloured solar modules for the Italian market are planned to launch later this year. Italy is the second most important market in Europe for coloured modules after Germany, primarily due to heritage conservation requirements. The advantage over roof tiles, said Gutsch, is that the modules are easier to install and can also be removed if needed.
Hans-Christoph Neidlein
Aiko is responding to the trend towards more tracker installations for solar parks. The company presented its upgraded Infinite ABC (all back contact) module, optimised for tracker use and designed to be robust while slightly lighter (665 W, 24.6 percent efficiency, 32.2 kg). Only copper is used for the cell connectors, and the cell design on the rear side has been slightly modified, reported Federico Brunelli, Solutions Europe Director, in conversation with pv Europe. Overall, Aiko sees itself as a specialist in cell manufacturing and a pioneer in technology development, which is why, unlike other major manufacturers, it does not plan to offer an integrated product portfolio with battery storage, said Brunelli. (hcn)
More from KEY 2026 in Rimini
KEY – New integrated storage systems for residential and commercial applications unveiled
KEY – tracker industry pushes flexible designs and smart software
Greek energy group Metlen: Italy is a core market for us
KEY 2026 – Longi and JA Solar step up European storage push
KEY 2026 – Tailwind for the solar transition from Rimini
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