Latent Shift is a prototype of a high-performance and responsive daylighting panel embedded with phase change material [PCM].  PCM offers an opportunity to construct a thin and modular panel system with heat storage capacity comparative to masonry construction.  As PCM changes state from solid to liquid, it stores, absorbs and releases high quantities of latent heat while undergoing a small sensible heat gain. During this change, its material properties shift from clear transparency to translucent white.  PCM provides an opportunity to construct a visually responsive panel with a high daylight factor. Offering the potential to illuminate interior building environments with ample sunlight without increasing the building’s reliance on mechanical systems for heating and cooling, Latent Shift provides efficient thermal performance within a panel that provides diffuse and desired daylight.