In recent years, the demand for intelligent surveillance systems has significantly increased due to rising security concerns in remote and urban areas. Conventional CCTV systems rely heavily on continuous power supply and wired internet connectivity, which limits their deployment in rural, isolated, or disaster-prone regions. To overcome these challenges, this paper presents an IoT-based solar-powered CCTV surveillance system integrated with SIM card communication for real-time monitoring and data transmission.The proposed system utilizes solar energy as the primary power source, ensuring uninterrupted operation even in areas without grid electricity. A high-efficiency solar panel charges a rechargeable battery, which powers the surveillance camera and control unit. The system is integrated with an IoT-enabled microcontroller and a GSM/4G SIM module, allowing live video streaming, alerts, and data transmission over cellular networks without requiring Wi-Fi infrastructure. The surveillance unit captures real-time video and images, which are transmitted to a remote user via a mobile application or web interface. Motion detection algorithms are implemented to enhance efficiency by activating the camera only when movement is detected, thereby conserving power and storage. Additionally, the system can send instant alerts through SMS or mobile notifications in case of suspicious activities. The proposed design is cost-effective, energy-efficient, and highly scalable, making it suitable for applications such as agricultural land monitoring, border security, construction sites, and smart city infrastructure. Experimental results demonstrate reliable performance with low power consumption and effective real time communication. This system provides a sustainable and flexible solution for modern surveillance needs.