en.Wedoany.com Reported - Solar module manufacturer Solx, located in Aguadilla, Puerto Rico, and perovskite-coated glass producer Caelux recently announced a five-year strategic partnership to jointly develop perovskite-silicon tandem solar modules. According to the agreement, Solx's factory will produce 3 GW of Aurora modules, utilizing Caelux's "active glass" technology to replace traditional cover glass, adding a power-generating layer on top of silicon-based cells to enhance overall performance.
The power conversion efficiency of this hybrid tandem module is approximately 28%, which is higher than that of conventional crystalline silicon modules but lower than the 31.1% perovskite-silicon tandem efficiency record set by LONGi in 2025. In an interview with pv magazine USA in April 2025, Caelux Chief Technology Officer Ernest “Charlie” Hasselbrink explained that the company made a slight compromise on efficiency through a four-terminal approach in exchange for better scalability and durability. The two companies plan to supply the Aurora modules to the U.S. market at a commercial scale by 2027 and have already deployed early versions in pilot projects.
In a statement, Solx CEO James Holmes said, "This is a significant moment for U.S. energy manufacturing. Integrating Caelux's advanced glass technology into a domestic manufacturing platform designed for gigawatt-scale production exemplifies the path forward for powering our energy future through large-scale construction." This collaboration follows recent perovskite-related announcements, such as Tandem PV opening a 40 MW demonstration facility in Fremont, California.
The Solx Aurora modules use solar cells produced by Suniva, with raw materials sourced from Corning's facility in Hemlock, Michigan. Suniva recently announced plans to build a new 4.5 GW factory in South Carolina, seen as a step toward a fully domestic solar supply chain. Suniva CEO Matt Card commented, "This partnership demonstrates the potential of U.S. manufacturers and technology leaders working together. We are strengthening domestic energy security, creating high-quality jobs, and advancing next-generation solar innovation."
Solx first announced its intention to manufacture modules in Puerto Rico in 2024 and began construction in Aguadilla at a former HP facility in April 2025. The company expects to create about 200 jobs, producing 1 GW annually of 625 W modules. These modules initially used steel frames from Origami Solar, but the status of that agreement became unclear after Nextpower acquired Origami Solar in September 2025. In the same month, Holmes told pv magazine USA that the factory was expected to be operational by year-end, with most production destined for the U.S. mainland market, and set a goal of reaching 10 GW manufacturing capacity by 2030. In April 2026, after more than a year of construction, Solx Senior Director of Manufacturing Operations Omar Ramirez Gonzalez announced via LinkedIn the completion of the first module from the initial production line.
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