Heliene starts US production of Caelux perovskite hybrid-tandem modules

Heliene and Caelux said on November 10, 2026 that their Hybrid-Tandem module, a perovskite layer over silicon cells, is in commercial-scale production for the US market at Heliene's plant in Mountain Iron, Minnesota, with module conversion efficiencies "up to 27%+," per their joint release. An initial industrial-scale commercial order is underway, and the modules are available for deliveries in 2027.

The module stacks two separate power generation layers. Caelux's perovskite "Energy Producing Glass" takes the place of the top glass and sits over N-type silicon cells in Heliene's module, which the companies say lets the module generate up to 20% more energy than a conventional N-type module. Heliene chief executive Martin Pochtaruk said the glass goes into Heliene's existing lines "without having to build an entirely new production setup." The two have signed a multi-year, multi-gigawatt agreement and target module efficiencies above 29% by 2028. The release names no test laboratory behind the efficiency figures, and does not say how much of Heliene's 1.3 GW of combined annual US module capacity will make the new module.

US-made hybrid tandem has been declared commercial before. When Caelux and Puerto Rico manufacturer Solx announced a five-year, 3 GW partnership on April 21, 2026, Solx chief executive James Holmes said US-made hybrid tandem "is no longer a theoretical, it's now in commercialized production" (Caelux release). That module, built with Suniva cells, was pitched at 28% efficiency, with widespread commercial volumes expected by 2027, the same year Heliene now offers deliveries. Caelux's boilerplate has grown in the meantime: energy density gains of up to 30% in April, up to 35% now.

Caelux is not the only perovskite bet in US manufacturing. First Solar said on October 29 that it had licensed CubicPV's US perovskite patents, and it expects a pilot line able to make Series 6-size modules to reach operational readiness in the first half of 2027 (our roundup). On the research side, UNSW and UtmoLight claimed a record certified stabilised 23.5% for a 676 cm² perovskite submodule in October (UNSW and UtmoLight claim 23.5% record for a 676 cm² perovskite submodule).