Passive Daytime Radiative Cooling is a phenomenon where a surface spontaneously cools by reflecting solar radiation back where it came from. Unlike HVAC systems, which have a net heating effect while also emitting hydrofluorocarbons, PDRC stands as an eco-friendly solution that will greatly reduce energy expenses and provide electricity-free cooling anywhere on the planet.

More than 80% of radiated energy escapes the earth's atmosphere within the infrared transparency window (8-13 μm).