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calestous's profile
Calestous Juma
Calestous Juma
Calestous Juma
Verified account
@calestous

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Calestous JumaVerified account

@calestous

Professor @BelferCenter @KennedySchool @Harvard | A New Culture of Innovation: Technology, Entrepreneurship and Prosperity (forthcoming book)

bit.ly/2sG3K0T
Joined April 2009

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    1. Calestous Juma‏Verified account @calestous 30 Jun 2017

      The belief that off-grid #solar is the answer to #Africa's #electricity needs is based on 1970s "appropriate #technology" dogmapic.twitter.com/Gf9Ie9nV4z

      Breakthrough, Ted Nordhaus, Alex Trembath and 4 others
      1. Breakthrough @TheBTI

      2. Ted Nordhaus @TedNordhaus

      3. Alex Trembath @atrembath

      4. Carlos Lopes @LopesInsights

      5. Robert Kabushenga @rkabushenga

      6. Célestin Monga @CelestinMonga

      7. Charles Onyango-Obbo @cobbo3

      17 replies 114 retweets 110 likes
    2. Vivian‏ @rVivianArnold 1 Jul 2017
      Replying to @calestous @mr_geologist and

      It's working in Australia. In remote locations particularly - Micro grids are the future.http://reneweconomy.com.au/emerging-power-microgrids-68438/ …

      2 replies 1 retweet 0 likes
    3. Ben Heard‏ @BNW_Ben 1 Jul 2017
      Replying to @rVivianArnold @calestous and

      You point to the fringe of our near 100% fossil driven, first-world energy-intense economy.

      2 replies 2 retweets 3 likes
    4. Vivian‏ @rVivianArnold 1 Jul 2017
      Replying to @BNW_Ben @calestous and

      Yes this is remote micro grids in the context of electrifying similarly suitable villages in Africa.

      1 reply 0 retweets 0 likes
    5. Ben Heard‏ @BNW_Ben 1 Jul 2017
      Replying to @rVivianArnold @calestous and

      Which, as a beginning? May be excellent in some cases. The bigger response, that really shifts poverty, is much bigger indeed.

      2 replies 2 retweets 4 likes
      Calestous Juma‏Verified account @calestous 1 Jul 2017
      Replying to @BNW_Ben @mr_geologist and

      In 70s we were told "appropriate technology" was just the start. It became the end. We're being played by gadget-mongers again

      6:02 AM - 1 Jul 2017
      • 8 Retweets
      • 18 Likes
      • T'Chillin Prez Cannady Harry Saunders Tony Atkinson Mikael von Knorring James Crawford Mark Bare Hamish Fallor Ergo Sum
      1 reply 8 retweets 18 likes
        1. New conversation
        2. eli rabett‏ @EthonRaptor 3 Jul 2017
          Replying to @calestous @BNW_Ben and

          As opposed to paying a large part of income for kerosine addiction? http://rabett.blogspot.com/2016/11/picosolar-better-faster-cheaper.html … https://www.youtube.com/watch?v=qNWvdtt5sxs …

          1 reply 1 retweet 0 likes
        3. Mark Bare‏ @mr_geologist 3 Jul 2017
          Replying to @EthonRaptor @calestous and

          Your song strikes close to home sir... solar same old green story... Here to help & oops.. created a bigger problem: http://www.ids.ac.uk/opinion/will-solar-pv-create-a-wave-of-toxic-battery-waste-in-rural-africa …

          1 reply 0 retweets 0 likes
        4. eli rabett‏ @EthonRaptor 3 Jul 2017
          Replying to @mr_geologist @calestous and

          You look at the pollution in the Niger delta from oil pipelines let alone indoor kerosine pollution? https://qz.com/905656/air-pollution-is-increasing-in-africa-along-with-rapid-urbanization/ … 1.2

          2 replies 0 retweets 0 likes
        5. Mark Bare‏ @mr_geologist 3 Jul 2017
          Replying to @EthonRaptor @calestous and

          Not when you consider the mining impact dim your plan. Panel production has a lot of toxins.... & who is advocating kerosene?pic.twitter.com/vbcEb6BSML

          1 reply 0 retweets 0 likes
        6. eli rabett‏ @EthonRaptor 3 Jul 2017
          Replying to @mr_geologist @calestous and

          The volume of mining driven by solar panels is orders of magnitude lower than that driven by oil and coal & comparable to nuclear

          1 reply 0 retweets 0 likes
        7. Mark Bare‏ @mr_geologist 3 Jul 2017
          Replying to @EthonRaptor @calestous and

          Well looks like you are wrong againpic.twitter.com/DjE78AAxjp

          1 reply 0 retweets 0 likes
        8. eli rabett‏ @EthonRaptor 3 Jul 2017
          Replying to @mr_geologist @calestous and

          No you are Gish Galloping. Volume of mining waste produced by solar much less per MWh than coal or oil. Same for nuclear.

          2 replies 0 retweets 0 likes
        9. eli rabett‏ @EthonRaptor 3 Jul 2017
          Replying to @EthonRaptor @mr_geologist and

          Your graph shows the power plant construction material not the wastes generated in capturing the fuel nor the costs of waste disposal

          2 replies 0 retweets 0 likes
        10. 8 more replies

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