Actually that's a great article for discussion of how energy intensive desalination is. Perhaps not everybody is aware how energy intensive it is to get salt out of water.
If you do it yourself, you boil the water and condense it elsewhere without the impurities. That requires the energy to boil the water completely. Desalination plants use reverse osmosis.
Either way it is unwinding a very stable energy state, and that's very costly. Very much like removing carbon dioxide from the air.














