Yes, ceramic fiber insulation can be effectively used to reduce energy consumption in buildings. It is known for its high thermal resistance and low thermal conductivity, which means it can significantly reduce heat transfer. By insulating walls, roofs, and floors with ceramic fiber insulation, buildings can maintain a more stable internal temperature, reducing the need for heating and cooling systems. This leads to energy savings and can contribute to a building's overall energy efficiency, making it an excellent choice for sustainable construction practices.