The energy flow and performance are very complex in the production, operation and demolishment stages in the lifecycle of buildings.
Basically, two main kinds of elements significantly influence the energy consumption in buildings, including the meaures of policy, technology and management, and the energy
sources used in the lifecycle of buildings.
In order to achieve the co-benefits in the building sector, the well understanding on the interconnection of energy use, carbon emissions and air pollution in buildings is necessary.