[Solar PV: Solx and Caelux Form 3 GW Strategic Partnership for Tandem Module Production]

Published: Apr 24, 2026 12:06

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U.S. solar manufacturer Solx and perovskite specialist Caelux have announced a five-year partnership to produce 3 GW of hybrid tandem modules. The collaboration integrates Caelux’s “Active Glass” with Suniva’s domestic silicon cells at Solx’s Puerto Rico facility, achieving 28% efficiency. Built to compete beyond federal tax credits, the partnership focuses on scalability and durability, utilizing a robust four-terminal process to overcome perovskite's reliability hurdles. Commercial-scale production is slated for 2027, leveraging Solx’s gigawatt-level manufacturing infrastructure to secure U.S. energy independence.

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