China Energy Demand Analysis System(CEDAS) is designed for mid- and long-term scenario analysis of energy requirements and CO2 emissions to support policymakers, planners and others strategically plan for energy demands and environmental protection in China. In the system, major drivers of energy consumption are identified as technology, population, economy and urbanization; scenarios are based on the major driving forces that represent various growth paths. In CEDAS China is divided into eight economic regions, and the multi-regional input-output approach is employed to compute energy requirements and CO₂ emissions under each scenario.

CEDAS is composed of four parts, as illustrated in Fig.1.

l         Database and database management subsystem: to input, store and manage base year data, factor scenarios and modeling results.

l         User interface: to provide graphic interface so as to conveniently input parameters and search results.

l         Scenario construction subsystem: to combine factor scenarios into the model and generate integrated scenarios.

l         Model base subsystem: to simulate the situation in terminal years for each constructed scenario.

Fig.1 framework of CEDAS

Fig.2 shows the software interface of current version.

Fig.2. software interface