The rapid urbanization of the 21st century presents significant challenges, including environmental degradation, resource depletion, and increased carbon emissions. Smart cities, powered by advanced technologies such as the Internet of Things (IoT), Artificial Intelligence (AI), and big data, offer transformative solutions to these challenges by seamlessly integrating sustainability and innovation. This paper explores the concept of green smart cities and highlights the key innovations driving their development, including smart energy systems, efficient transportation networks, advanced waste and water management, and urban planning solutions optimized for environmental sustainability. Case studies from leading smart cities demonstrate the tangible benefits of these innovations in reducing ecological footprints and improving quality of life. However, the journey toward green smart cities is fraught with challenges, including technological limitations, financial constraints, social resistance, and regulatory hurdles. This research emphasizes the importance of collaborative efforts, innovative public policies, and emerging technologies to address these challenges and foster sustainable urban development. By aligning technological advancements with environmental objectives, smart cities hold the potential to redefine urban living and ensure a greener, more resilient future for generations to come.
