Solx and Caelux form five-year strategic partnership to produce perovskite-silicon tandem solar modules in Puerto Rico

Solx, a solar module manufacturer based in Aguadilla, Puerto Rico, and Caelux, a manufacturer of perovskite-coated glass, announced a five-year strategic partnership to produce perovskite-silicon tandem solar modules. The collaboration will see Solx's Puerto Rico facility deliver 3 GW of Solx Aurora modules, which integrate Caelux's 'Active Glass' top layer to achieve 28% power conversion efficiency, replacing conventional top glass in silicon-based panels. Commercial volumes of the hybrid tandem modules are expected to reach the U.S. market by 2027, following the deployment of a beta version in a project with a U.S.-based developer. Solx sources its silicon cells from Suniva, which procures raw materials from Corning's facility in Hemlock, Michigan, and plans to build a new 4.5 GW facility in South Carolina. The partnership aligns with Solx's goal of achieving 10 GW of manufacturing capacity by 2030, with the Puerto Rico plant initially targeting 1 GW per year of 625-watt modules using steel frames from Origami Solar. Solx CEO James Holmes described the integration of Caelux's technology as a defining moment for American energy manufacturing, emphasizing gigawatt-scale production and domestic supply chain strengthening.

Counterparts (4)

supplier

Suniva

company · 2 deals

Norcross-based monocrystalline solar cell manufacturer and technology innovator, producing high-efficiency cells in the U.S. with proprietary processing techniques and over 150 patents.

Corning

company · 1 deals

Corning Incorporated is a global leader in materials science, specializing in advanced glass, ceramics, and optical physics. In the infrastructure sector, Corning is a critical supplier of optical fiber and cable solutions, connectivity hardware, and specialty glass that form the backbone of high-speed communication networks, data centers, and 5G deployments worldwide.

Partner

C

Caelux Corporation

company · 1 deals

Solx

company · 1 deals

Puerto Rico-based solar module manufacturer specializing in high-performance, domestically produced PV modules for the utility-scale solar industry, with a planned 1 GW manufacturing facility in Aguadilla scheduled for completion in August 2025.