Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • Moments Moments Moments, current page.

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
calestous's profile
Calestous Juma
Calestous Juma
Calestous Juma
Verified account
@calestous

Tweets

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

Tweets

  • © 2018 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    Calestous Juma‏Verified account @calestous 25 Dec 2015

    Is renewable energy enough to meet Africa's long-term development goals http://gu.com/p/4ezm6/stw  @john_vidal

    3:48 PM - 25 Dec 2015
    • 30 Retweets
    • 22 Likes
    • Huguette U. Bitega Waqas Ahmed Saeed AlJabry Melita Steele Brian Caouette Vurze DIARRA Sarah Moser Bolakale Salau
    16 replies 30 retweets 22 likes
      1. New conversation
      2. fofo ma amikron‏ @maamikron42 25 Dec 2015
        Replying to @calestous

        @calestous @john_vidal of the Volta-river dam it was said (at the time) that it could produced more energy than the economy could use...

        1 reply 1 retweet 0 likes
      3. Calestous Juma‏Verified account @calestous 25 Dec 2015
        Replying to @maamikron42

        @maamikron42 Uganda was once told that if it built two dam it was in danger of having too much electricity @SarahKagingo @john_vidal

        1 reply 0 retweets 0 likes
      4. fofo ma amikron‏ @maamikron42 25 Dec 2015
        Replying to @calestous

        @calestous @SarahKagingo @john_vidal so we need a pan-African power grid.

        3 replies 1 retweet 1 like
      5. Calestous Juma‏Verified account @calestous 25 Dec 2015
        Replying to @maamikron42

        @maamikron42 How about a network of smart grids @SarahKagingo @john_vidal

        1 reply 0 retweets 1 like
      6. Calestous Juma‏Verified account @calestous 25 Dec 2015
        Replying to @calestous

        .@maamikron42 State of electric power in Africa @SarahKagingo @john_vidalpic.twitter.com/4i2gMfJtJD

        5 replies 26 retweets 11 likes
      7. Mollel‏ @jmollel 25 Dec 2015
        Replying to @calestous

        @calestous @maamikron42 @SarahKagingo @john_vidal this Map is misleading: Kenya's electricity penetration stands at 35% according to ERC

        2 replies 3 retweets 1 like
      8. Calestous Juma‏Verified account @calestous 25 Dec 2015
        Replying to @jmollel

        Calestous Juma Retweeted Calestous Juma

        .@jmollel @maamikron42 @SarahKagingo @john_vidalhttps://twitter.com/calestous/status/668514211979526144 …

        Calestous Juma added,

        Calestous JumaVerified account @calestous
        An average #Ethiopian consumes less #electricity per year than a coffeemaker pic.twitter.com/CF2QH8qzQ4 #infrastructure
        1 reply 5 retweets 4 likes
      9. Mollel‏ @jmollel 25 Dec 2015
        Replying to @calestous

        @calestous @maamikron42 @SarahKagingo @john_vidal probably true, but it is changing very fast!

        1 reply 0 retweets 0 likes
      10. 2 more replies
      1. Calestous Juma‏Verified account @calestous 25 Dec 2015
        Replying to @davidolusi

        @davidolusi @john_vidal It is solar, wind, hydro, geothermal and biomass. Nuclear is a distant and demonized option

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. New conversation
      2. Mohamed Bakarr‏ @MIBakarr 25 Dec 2015
        Replying to @calestous

        Renewable energy is best way for African countries to tackle energy poverty; and will spur growth that is inclusive. @calestous @john_vidal

        1 reply 6 retweets 6 likes
      3. TheBug0815‏ @TheBug0815 25 Dec 2015
        Replying to @MIBakarr

        @mibakarr @calestous @john_vidal decentralized renewable power empowers people and not multinational corporations

        1 reply 2 retweets 2 likes
      4. Lionel Yelibi‏ @TehRaio 25 Dec 2015
        Replying to @TheBug0815

        @TheBug0815 @mibakarr @calestous @john_vidal yes: everybody is fighting for fossil fuels, nobody fights because of renewables.

        1 reply 2 retweets 4 likes
      5. TheBug0815‏ @TheBug0815 25 Dec 2015
        Replying to @TehRaio

        @tehraio @mibakarr @calestous @john_vidal right, there are so many positive results of going full renewable, not just environment

        0 replies 1 retweet 3 likes
      6. End of conversation
      1. The Hydrogen Answer‏ @thehydrogenans 25 Dec 2015
        Replying to @calestous

        @calestous @john_vidal in the case of Africa it is more about having modern amenities which we have but not increasing GHG emissions

        0 replies 1 retweet 2 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Oscar Osabinyi FCCA‏ @osabinyi 26 Dec 2015
        Replying to @calestous

        @calestous @john_vidal we need to develop the technology to harness is. At levels that provide more energy than by nuclear means!!!

        0 replies 1 retweet 1 like
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. IBOM LLC‏ @IBOMLLC 25 Dec 2015
        Replying to @calestous

        @calestous definitely adding that tweet to my site. http://rbl.ms/1lZC650 

        0 replies 1 retweet 1 like
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Kurt Scherrer‏ @KurtScherrer 25 Dec 2015
        Replying to @calestous

        @calestous @john_vidal @USIP Moderately agree other problems have to be solve too http://www.usip.org/publications/2015/12/23/regional-security-through-inclusive-reform-in-the-maghreb-and-the-sahel … via @USIP

        0 replies 1 retweet 1 like
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. The Hydrogen Answer‏ @thehydrogenans 25 Dec 2015
        Replying to @calestous

        @calestous @john_vidal on that basis for Africa/world the only non finite resource able to do that is hydrogen as the energy carrier/store

        0 replies 2 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. New conversation
      2. The Hydrogen Answer‏ @thehydrogenans 25 Dec 2015
        Replying to @davidolusi

        @davidolusi @calestous @john_vidal however a low-cost H2 Generator for onsite generation, lifestyles will change & the economics change

        1 reply 0 retweets 0 likes
      3. Tweet unavailable
      4. The Hydrogen Answer‏ @thehydrogenans 25 Dec 2015
        Replying to @davidolusi

        @davidolusi @calestous @john_vidal see http://www.thehydrogenanswer.co.uk  not updated to #HyPulJet.2.0 as yet but version 2 is stand alone- own H2 & 0

        1 reply 0 retweets 0 likes
      5. Tweet unavailable
      6. The Hydrogen Answer‏ @thehydrogenans 25 Dec 2015
        Replying to @davidolusi

        @davidolusi @calestous @john_vidal very interesting I started in 1980 with the original engine design and what it is in terms of potential

        0 replies 0 retweets 0 likes
      7. End of conversation

    Loading seems to be taking a while.

    Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

      Promoted Tweet

      false

      • © 2018 Twitter
      • About
      • Help Center
      • Terms
      • Privacy policy
      • Cookies
      • Ads info