PV generation can be highly efficient in arid/semi-arid regions, but there is a huge demand for freshwater and food rather than electricity as it is. The WEA scheme, where PV electricity is the power source and is expected to be cheaper, will contribute to securing freshwater and promoting agriculture, thereby improving the quality of people's lives, and will become important in the future. Further studies will evaluate the feasibility of the WEA scheme by assessing several aspects, such as the economic side.