The main nexus approach is to optimize the limited resources to satisfy the demand in WEF sectors. To give an overview of researches on nexus, we look at research papers and review articles on a database, the Web of Science respectively. Previous researches have focused on desalination only in the coastal and dry areas. Desalination is not the mainstream in the WEF nexus. Although many researchers investigated desalination with the distribution via pipelines, very limited literature focuses on the use of renewable energy for these operations. For a self-sufficient and sustainable water supply, renewable energy plays a significantly important role. Furthermore, green ammonia originally included productions of freshwater and electricity based on renewable energy. Several researchers have analyzed their economics and energy efficiency, but they do not consider supplying freshwater and electricity to other sectors. In the retrieved literature, none have evaluated the supply of water desalinated by renewable energy and green ammonia to inland cities in the context of nexus, which considers the supply to multi sectors with optimization. Since water, electricity, and ammonia are indispensable for human welfare, the WEA scheme to provide them is essential for the future and is a critical subject for a nexus analysis.