Perovskite solar has long promised step-change efficiency, yet manufacturing hurdles kept it in the lab. Scott Graybeal and his team at Caelux are changing that. By adding a thin perovskite “active glass” layer to conventional silicon modules, the company unlocks 30–40% more power output while cutting overall project costs, without rebuilding the solar industry from scratch. In this episode of Hardware to Save a Planet, host Dylan Garrett speaks with Scott Graybeal, CEO of Caelux, about why perovskites represent a structural shift in solar economics. Scott explains how tandem cell architectures split the light spectrum to dramatically increase energy harvest, and why adding just a few cents per watt can transform 25-year project cash flows and lower the levelised cost of energy. He also outlines Caelux’s manufacturing roadmap toward high-volume production, applying Wright’s Law through disciplined process optimisation rather than one-off breakthroughs. The conversation also explores the company’s partnership strategy with incumbent module manufacturers, the changing geography of solar production, and why the next decade could determine whether solar becomes truly ubiquitous infrastructure. Hardware to Save a Planet is brought to you by Synapse. We are a global product development and engineering firm that partners with visionary companies to design, develop, and realize breakthrough hardware and AI-powered innovations that advance climate technologies. To learn more about Synapse and potential business partnerships we offer outside of the podcast, please visit: https://www.synapse.com/contact/ to get in touch!