Efficient lighting plays a critical role in shaping sustainable interiors, providing both environmental benefits and aesthetic enhancements. By integrating advanced lighting technologies and smart design approaches, homeowners and businesses can significantly reduce their energy consumption and carbon footprint. Energy-efficient lighting not only conserves resources and lowers utility costs, but it also supports healthier, more comfortable living and working environments. This guide explores innovative strategies, modern technologies, and actionable tips for adopting energy-efficient lighting solutions that align with sustainable interior design principles.