30% More Power, 20% Lower Costs: Scott Graybeal on Solar’s Step-Change Moment

Episode notes

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.