Module manufacturer Heliene and perovskite solar company Caelux have started commercial-scale production of a hybrid-tandem solar module for the US market.
Industrial-scale deliveries of the modules will begin in 2027 and will be manufactured by Heliene at its Minnesota module assembly plant. The perovskite-silicon technology combines Caelux’s perovskite glass technology to build a module with two separate power-generation layers that deliver higher power density.
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According to the companies, the silicon-perovskite hybrid-tandem modules can offer a conversion efficiency of up to 27%+ and target reaching module efficiencies exceeding 29% by 2028.
The hybrid-tandem modules incorporate two power-generation layers, one using Caelux’s perovskite glass and the other using N-type silicon solar cells.
The implementation of the perovskite glass enables the module to exceed the efficiency limits of conventional silicon-only modules and generate more electricity using the same amount of space. This method does not have to be integrated into the design of the cell from scratch.
The partnership with Heliene is a new step for Caelux, which started shipping its first order of perovskite glass technology in July 2025 and has since partnered with several manufacturers to implement its technology. This includes Puerto Rico-based Solx and Indian manufacturers Rayzon, GREW and INA Solar.
Caelux CEO Scott Graybeal spoke in August of this year with PV Tech Premium about the company’s technology, its expansion to the Indian market and the potential impact of perovskite technology (subscription required).
“One of the advantages of Caelux’s technology is that we can integrate its Energy Producing Glass into our existing manufacturing lines without having to build an entirely new production setup,” said Martin Pochtaruk, CEO and Founder of Heliene.
Heliene further expands its portfolio of modules it is producing and is the second new product it unveiled in less than two months. In September the module manufacturer launched a new all-black rooftop solar module, while also securing a purchase agreement for this new module with residential solar and energy storage provider Sunrun.
Both companies have entered into a multi-year, multi-gigawatt agreement to commercialise the hybrid-tandem module. Heliene will showcase the new hybrid-tandem module at RE+ in Las Vegas next week.
