Non-commonality of the assessment method due to the diversity of member types and characteristics seriously causes deviation in overall and accurate diagnosis of smart grid demonstration project. Taken multilateral participant into consideration, the proposed method models the cost and benefit, according to the direct and indirect value flow, which is based upon the relationship between devices, service and added value. The application of value-tracing in a practical case shows that, compared with conventional power grid benefit calculation methods, value flow analysis makes smart grid assessment more precise and more actual because it calculates indirect value of multiple subjects and members.

With the deep integration of energy and internet, energy internet service is gradually following the user centric idea. This paper first analyzes the value source of energy internet. Then the user value demand on energy is regarded as guidance, and a four-dimensional service system construction framework including value domain, energy domain, business domain, and information domain is established. A top-down decomposition of the value domain and a bottom-up implementation of the value domain are performed to demonstrate the construction process. Finally, a value realization analysis method including value proposition, production, transmission, and acquisition is used to a typical case of service implementation. This paper tries to provide an analysis paradigm for integrative and systematic research and understanding of the development context and trends of energy internet services, and to provide a basic analysis method for promoting service innovation.