> Theoretically, about 0.86 kWh of energy is needed to desalinate 1 m3 of salt water (34 500 ppm). This is equivalent to 3 kJ kg-1. The present day desalination

> Theoretically, about 0.86 kWh of energy is needed to desalinate 1 m3 of salt water (34 500 ppm). This is equivalent to 3 kJ kg-1. The present day desalination plants use 5 to 26 times as much as this theoretical minimum depending on the type of process used. That translates to about 3.25 watt-hours/gallon as the theoretical limit, if my math is correct. Source: https://www.desware.net/Energy-Requirements-Desalination-Processes.aspx#:~:text=Theoretically%2C%20about%200.86%20kWh%20of,to%203%20kJ%20kg%2D1 https://www.desware.net/Energy-Requirements-Desalination-Pro....