In response to the growing challenges of urban waste management, this paper proposes an innovative solution leveraging IoT technology and renewable energy sources. The IoT-based solar-powered smart dustbin presented here aims to enhance the efficiency and sustainability of waste collection processes in urban areas. The system incorporates ultrasonic sensors that continuously monitor the garbage level within the dustbin. Once the garbage level exceeds a predefined threshold, a real-time message is automatically transmitted to the municipal authorities, prompting timely garbage collection. This proactive approach minimizes overflow and littering, thereby improving overall cleanliness and sanitation in urban environments. Central to the functionality of the smart dustbin is its utilization of solar power for energy supply. Solar panels integrated into the design harness sunlight to generate electricity, ensuring continuous operation without reliance on traditional power sources. This not only reduces operational costs but also significantly diminishes the system's carbon footprint, contributing to environmental sustainability. Moreover, the implementation of IoT technology enables remote monitoring and management of the smart dustbins across multiple locations. Municipal authorities can access real-time data on garbage levels, collection schedules, and system performance through a centralized dashboard. This enhances operational efficiency, allowing for optimized resource allocation and proactive maintenance.