A reliable carbon measurement system serves as the foundation for effective carbon asset management. This paper presents a sophisticated smart carbon emission measurement and carbon asset management system specifically designed for power plants. Leveraging the operational conditions of a power plant's DCS, it enables real-time carbon emission accounting based on live data. The system seamlessly integrates online monitoring to facilitate accurate carbon emission measurement, automating the calculation, collection and reporting of emissions data while also conducting pre-review checks for compliance with reporting standards. Additionally, it simulates enterprise allocation and conducts predictive analysis to visualize both carbon emission data and quotas. By tracking, analyzing, and predicting trends in carbon trading, the system offers strategies to optimize carbon asset trading. It effectively manages all aspects of carbon assets throughout their lifecycle. The implemented system has demonstrated stability at a specific power plant by successfully measuring emissions, managing monitoring activities, diagnosing emissions data issues, performing indicator analysis and warnings generation, generating comprehensive reports on emissions verification management as well as facilitating compliance with regulations related to carbon trading. This solution helps enterprises ensure the preservation and growth of their valuable carbon assets while promoting revenue growth from efficient carbon trading practices which ultimately showcasing the value of digitalized carbon emission measurement and intelligent carbon asset management for power enterprises.