Article is outdated (2008) and makes a single argument: Desalination requires too much energy. Becaues it is outdated, it doesn't account for the excess energy a lot of places and countries have from wind and solar. Water desalination is a prime candidate (along with Bitcoin mining and AI model training, sigh) for using available excess energy from renewable that cannot be stored otherwise. Clean/drinking water can be stored easily - it is called a freshwater lake.