California Desalination Facilities

Besieged by drought and desperate for new sources of water, California towns are ramping up plans to convert salty ocean water into drinking water to quench their long-term thirst. The plants that carry out the high-tech "desalination" process can cost hundreds of millions of dollars, but there may be few other choices for the parched state.
Where the Pacific Ocean spills into the Agua Hedionda Lagoon in Carlsbad, Calif., construction is 25 percent complete on a $1 billion project to wring 50 million gallons of freshwater a day from the sea and pour it into a water system that serves 3.1 million people.

[link to www.nbcnews.com]

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List of desalination plants in Australia
[link to en.m.wikipedia.org]

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Thoughts?
It would be cool if they could make it solar powered ( not solar desalination on this scale though.)