Similarly in Section 3.2.1, two ways are shown for the case of using existing electricity derived from natural gas or coal. In the same way as Fig. , Figure shows the reduction in CO2 emissions when the supply of PV power as electricity is 0%, and the ratio of PV electricity allocation to seawater desalination and ammonia synthesis is changed. synthesis is advantageous rather than desalination. Figure shows the breakdown of CO2 emissions for the WEA scheme under these land conditions. The reason for advantage is that vertical transport of water is the dominant energy consumption. The cause of the reversing benefits between ammonia synthesis and seawater desalination at a certain height is discussed here.