IoT OTA update is transforming smart energy systems by enabling remote upgrades for critical applications such as smart energy management systems, EV charging hubs, smart grid management systems, and smart meters. These updates improve system efficiency, optimize energy usage, and ensure the integration of new technologies. With IoT OTA update, utilities can deploy the latest software and firmware changes without manual intervention, reducing downtime and enhancing reliability. This remote capability helps cities and organizations maintain a sustainable, responsive, and future-ready smart energy infrastructure, ensuring that energy resources are managed more effectively and securely.