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Re: [SFC] How to harvest solar power? Beam it down from space!

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  • Aleus Mundi
    Finally it was about time ... ALEUS (The Avening Angel) -- The Transmundial rules all [Non-text portions of this message have been removed]
    Message 1 of 2 , May 30, 2008
      Finally it was about time

      On 5/30/08, derhexer@... <derhexer@...> wrote:
      >
      > URL to an interesting article from CNN
      > _http://www.cnn.com/2008/TECH/science/05/30/space.solar/index.html_
      > (http://www.cnn.com/2008/TECH/science/05/30/space.solar/index.html)
      >
      > I think this concept has been around for at least 40 years, but rising
      > energy prices and environmental concerns are bringing it back.
      >
      > First few paragraph
      > "
      > LONDON, England (CNN) -- Jyoti is the Hindi word for light. It's something
      > Pranav Mehta has never had to live without. And he is lucky. Near where he
      > lives in Gujarat, one of the most prosperous states in India, thousands of
      > rural
      > villages lack electricity or struggle with an intermittent supply at best.
      >
      >
      >
      >
      > Massive solar satellites would beam power back to ground-based receivers on
      >
      > Earth.
      >
      > _more photos »_
      > (javascript:CNN_changeMosaicTab('cnnPhotoCmpnt','photos.html');)
      >
      > "We need to empower these villages, and for empowerment, energy is a must,"
      >
      > Mehta said. "Rural India is suffering a lot because of a lack of energy."
      > By 2030, India's Planning Commission estimates that the country will have
      > to
      > generate at least 700,000 megawatts of additional power to meet the demands
      >
      > of its expanding economy and growing population.
      > Much of that electricity will come from coal-fired power plants, like the
      > $4
      > billion so-called ultra mega complex scheduled to be built south of Tunda
      > Wand, a tiny village near the Gulf of Kutch, an inlet of the Arabian Sea on
      >
      > India's west coast. Dozens of other such projects are already or soon will
      > be
      > under way.
      > Yet Mehta has another solution for India's chronic electricity shortage,
      > one
      > that does not involve power plants on the ground but instead massive
      > sun-gathering satellites in geosynchronous orbits 22,000 miles in the sky.
      > The satellites would electromagnetically beam gigawatts of solar energy
      > back
      > to ground-based receivers, where it would then be converted to electricity
      > and transferred to power grids. And because in high Earth orbit, satellites
      >
      > are unaffected by the earth's shadow virtually 365 days a year, the
      > floating
      > power plants could provide round-the-clock clean, renewable electricity.
      >
      > Don't Miss
      > * _Just Imagine: 2020_
      > (http://www.cnn.com/SPECIALS/2008/just.imagine/)
      > * _Gardening in space_
      > (
      > http://www.cnn.com/2008/TECH/space/05/20/ceac.wheeler/index.html?iref=intlOnlyonCNN)
      >
      > * _Who owns the moon?_
      > (http://www.cnn.com/2008/TECH/space/05/19/moon.land/index.html)
      > * _Interview: Iain M. Banks_
      > (http://www.cnn.com/2008/TECH/space/05/15/iain.banks/index.html)
      >
      > "This will be kind of a leap frog action instead of just crawling," said
      > Mehta, who is the director of India operations for Space Island Group, a
      > California-based company working to develop solar satellites. "It is a
      > win-win
      > situation."
      > American scientist Peter Glaser introduced the idea of space solar power in
      >
      > 1968.
      > _NASA_ (http://topics.cnn.com/topics/nasa) and the United States
      > _Department of Energy_ (
      > http://topics.cnn.com/topics/u_s_department_of_energy) studied
      > the concept throughout the 1970s, concluding that although the technology
      > was feasible, the price of putting it all together and sending it to outer
      > space was not.
      > "The estimated cost of all of the infrastructure to build them in space was
      >
      > about $1 trillion," said John Mankins, a former NASA technologist and
      > president of the Space Power Association. "It was an unimaginable amount of
      > money."
      > NASA revisited space solar power with a "Fresh Look" study in the mid-'90s
      > but again found that even though the technology needed for the satellites
      > had
      > become significantly cheaper and more advanced, the up-front costs were
      > still
      > prohibitive, Mankins said. By 2002, the project was indefinitely shelved --
      >
      > or so it seemed.
      > "The conditions are ripe for something to happen on space solar power,"
      > said
      > Charles Miller, a director of the Space Frontier Foundation, a group
      > promoting public access to space. "The environment is perfect for a new
      > start."
      > Skyrocketing oil prices, a heightened awareness of climate change and
      > worries about natural resource depletion have recently prompted a renewed
      > interest
      > in beaming extraterrestrial energy back to Earth, Miller explained.
      > And so has a 2007 report released by the _Pentagon_
      > (http://topics.cnn.com/topics/the_pentagon) 's National Security Space
      > Office, encouraging the U.S.
      > government to spearhead the development of space power systems.
      > "A single kilometer-wide band of geosynchronous Earth orbit experiences
      > enough solar flux in one year to nearly equal the amount of energy
      > contained
      > within all known recoverable conventional oil reserves on Earth today," the
      >
      > report said."
      > Chris
      >
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      >
      > [Non-text portions of this message have been removed]
      >
      >
      >


      ALEUS (The Avening Angel)
      --
      The Transmundial rules all


      [Non-text portions of this message have been removed]
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