In consideration of environmental costs, researches indicate that the environmental value of wind power with 469MW installation in the nation in 2002 is SO2 created 74.54million RMB from reduced emission benefit, NOx, 28.17million RMB and CO2, 75.34million RMB. Other forms of pollution in addition, the total reduced emission benefit are 258.67million RMB. In prediction on this basis, compared with coal, wind power makes a 0.28RMB/KWh saving in environmental cost. In the application of solar energy which is known to all, the uneconomical process of production and recycle becomes its biggest problem.