Green energy: Make it so

Speaking of “global warming”, an  interesting article caught my eye recently.

It seems that Arizona has mandated that 15% of it’s electricity must come from green energy by 2025.  Given that Arizona is mostly a desert with lots of sun, you would think that this would be an ideal spot for vast solar energy farms.  Well, not exactly.

Utility-scale solar power works by generating steam that spins turbines.  Cooling the system at the end of the process consumes almost twice as much water per megawatt hour as coal-fired power plants that use the same cooling technology…

Thus, there is a small problem.  Deserts are notorious for their lack of water.  A 2009 study by the Congressional Research Service found that,

…a solar expansion in the southwest…could consume as much as 1% of the state’s finite water resources within a few years.

And,

John Jarvis, now Mr. Obama’s National Park Service director, warned in a memo last year that a green boom in the southwest could “strain limited water resources already under pressure from urbanization, irrigation expansion, commercial interests and mining.”

Eventually, technology will allow us to become less dependent on “foreign oil”, but, trying to jam green energy down our throats before then is nothing short of stupid.  Particularly when no one seems to be even remotely interested in the consequences.

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SoundOffSister

The Sound Off Sister was an Assistant United States Attorney for the Southern District of Florida, and special trial attorney for the Department of Justice, Criminal Division; a partner in the Florida law firm of Shutts & Bowen, and an adjunct professor at the University of Miami, School of Law. The Sound Off Sister offers frequent commentary concerning legislation making its way through Congress, including the health reform legislation passed in early 2010.

17 Comments

  1. sammy22 on August 21, 2010 at 12:09 pm

    There are not too many alternatives in AZ to make electricity. It may be instructive to report where the water to cool the 3 nuclear power plants in AZ is coming from. It's good to have some "vision" and flexibility!



  2. scottm on August 21, 2010 at 1:39 pm

    We are talking about 2025!  A lot can happen between now and then, another form of alternative energy could come into use by then.  Or maybe we can pretend there is no global warming and there is a limitless supply of oil.



    • Dimsdale on August 21, 2010 at 4:54 pm

      Nor do we want to pretend there is significant anthropogenic global warming and no artificial (read it political) limits on the development of domestic oil supplies.  😉



  3. Dimsdale on August 21, 2010 at 4:45 pm

    Fusion!  At the break even point now, and nowhere to go but up!  If it's good enough for the sun….



  4. JollyRoger on August 21, 2010 at 5:11 pm

    We don't have an energy production problem- we've got an energy consumption problem.  Barry should lead by example; turn the thermostat down and stop running around the white house in his underwear, StayCations, no golf cart, turn down the God-Like reverberating echo machine and turn off the teleprompter, make congress and senate hacks fly coach, trade in the Caddy for an Up-Armored Chevy Volt…



  5. winnie888 on August 22, 2010 at 2:06 am

    Universal interconnectivity, loosely defined, "states that everything in our meaningful life is inextricably connected, that things correspond to one another."  Dependence on oil becomes a dependence on water? Our society requires the production of energy. Which form is going to require the least amount of natural resources to produce?

    Anima mundi, the soul of the world…if you believe in this concept, then anima mundi affects every living and non-living thing on this planet. Only in our arrogance would human beings believe that we could change nature's course.  Nature's course is more likely to change us.  Everything we do/create (solar panels in the desert that require scarce water to generate power) is just a reaction.



    • Dimsdale on August 22, 2010 at 5:04 am

      The next wars will be fought over water, not oil.  Despite the abundance of water on Earth, only a small percentage (around 3%) of it is of drinking quality.  Much energy will be consumed to convert salt water to fresh.  Using up such a resource to produce "clean" energy might be highly counterproductive, which is a politic way of saying "stupid".

       

      The being said, we should all live by the old latin adage, semper ubi sub ubi (always wear under wear – truly bad translation)!



    • scottm on August 22, 2010 at 5:15 am

      Dims, now you have become Nostradamus!!!    Just a joke.



    • winnie888 on August 22, 2010 at 10:07 am

      I refuse to live by that adage.  😛



    • Dimsdale on August 22, 2010 at 3:15 pm

      Ye shall henceforth be known as "CommandoWinnie888".



    • winnie888 on August 23, 2010 at 12:48 am

      Priceless!  😀



  6. sammy22 on August 22, 2010 at 5:05 am

    If anybody checked, electricity from solar panels can be generated (the preferred way) by direct conversion. Generating steam to spin a turbine using solar is "dumb".



    • scottm on August 22, 2010 at 5:12 am

      Well Sammy before I can comment on that I'll have to consult with the Republicans foremost authority on global warming and green energy…Rush Limbaugh.



    • Dimsdale on August 22, 2010 at 5:22 am

      While waiting for scott to contact Rush, direct conversion via photovoltaics averages in the 20% range, with really cutting edge panels topping 40% (http://en.wikipedia.org/wiki/File:PVeff%28rev100414%29.png).
       

      Consider that if there is outcry about wind farms (and biomass up here), what will the response be to acres of solar panels?



  7. sammy22 on August 22, 2010 at 5:35 am

    "The rest of the world" is already doing all that: solar farms, wind farms, biomass even nuclear. But, since this item doesn't fit the agenda, we need not look at what others are doing.



    • Dimsdale on August 22, 2010 at 3:18 pm

      Sorry. I guess I have lost track.  This is in response to what exactly?



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