The Power Consumption Monitoring System offers a comprehensive solution for residential energy management by measuring power usage and estimating costs in real-time. This paper introduces a user-friendly approach to empower individuals to control their energy consumption actively. With an integrated alert system, users receive notifications when nearing a higher cost slab, promoting more cautious energy use and potentially reducing expenses. Enhanced through IoT automation, the system allows control of home appliances and intruder detection when the consumer is away. With its IoT-driven insights and reminders, the system helps users reduce unnecessary energy usage. Key components, including a Telegram chatbot, ESP8266 microcontroller, and PZEM module, provide instant energy monitoring, while Google Sheets ensures accessible data storage. This system also delivers personalized recommendations and integrates seamlessly with smart home devices, balancing convenience with energy efficiency. Emphasizing data security and scalability, this approach aims to lower energy costs by avoiding unnecessary energy consumption, reducing environmental impact, and empowering users in sustainable energy consumption. The proposed method also directly supports Sustainable Development Goals (SDGs), particularly in areas of affordable and clean energy (SDG 7), sustainable cities and communities (SDG 11), and climate action (SDG 13).