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Response to ripcord (Reply #17)

Wed May 26, 2021, 04:50 PM

18. Typically it takes about 3 kilowatt hours to desalinate a cubic meter of sea water.

The theoretical minimum is about 1 kilowatt hour.

One cubic meter = 264 gallons.

The California Aqueduct, which carries water to Southern California, can transport 370 cubic meters of water per second but usually carries less than that on average, especially in these times of global-warming induced drought.

It would take a lot of wind turbines to desalinate that much water, and the environmental impacts along the California coast would be horrific. That's the scale of the problem.

Sea life can be killed in desalinization plant sea water intakes, and also by the chemically treated brine these desalinization plants dispose of.

Judging from the experience of Germany and Denmark, electricity from hybrid wind power systems retails for about $0.35 a kilowatt hour. It's less than that in California because we pay less for natural gas "back-up" power. But gas is not really backup power as alternative energy enthusiasts like to claim it is. It's a primary energy source.

In the City of San Diego a cubic meter of water delivered to residential customers currently costs a little over two cents above the base meter fee. (1)

The nearby Carlsbad desalinization plant advertises it can produce fresh water for "half a penny a gallon." (2)

That's $1.32 per cubic meter, definitely over two cents, but not really that much costlier than the international experience of around $0.85 a cubic meter for desalinated water.

I've got no dog in this fight other than my Quixotic hatred of wind turbines installed in previously pristine places and the entire factory farm dairy industry.

Hmmmm...

That's a pretty big dog.


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SouthBayDem May 2021 OP
Hugh_Lebowski May 2021 #1
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ripcord May 2021 #17
LineLineNew Reply Typically it takes about 3 kilowatt hours to desalinate a cubic meter of sea water.
hunter May 2021 #18
ripcord May 2021 #19
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