Can 100% renewable energy power the world? – Federico Rosei and Renzo Rosei

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Every year, the world uses 35 billion barrels of oil. This massive scale of fossil fuel dependence pollutes the earth, and it won’t last forever. On the other hand, we have abundant sun, water and wind, which are all renewable energy sources. So why don’t we exchange our fossil fuel dependence for an existence based only on renewables? Federico Rosei and Renzo Rosei describe the challenges.

Lesson by Federico Rosei and Renzo Rosei, directed by Giulia Martinelli.

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There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-growing source of energy in the world—and how we can use it to combat climate change.
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Renewable Energy 101 | National Geographic

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40 Responses to Can 100% renewable energy power the world? – Federico Rosei and Renzo Rosei

  1. TED-Ed says:

    Thank you so much to everyone supporting us on Patreon! You are helping amplify the voices of scientists working towards a more sustainable future. If you'd like to learn more about how to get involved, check out our Patreon page: http://bit.ly/2BRTjYU

  2. Rajiv Pokharel says:

    Amazing video…..simple yet brilliant animation…

  3. Mike Bablles says:

    4:10 combustion engines are highly inneficient with converting energy dense fossil fuels to useable kinetic energy; 80% losses in fact. Let's work on vastly improving these devices. But it appears this is not possible which is why we have to move away from the internal combustion engine and improve devices that harness photons and electromagnetic fields. Time to evolve.

  4. buckpasser55 says:

    example. Solar panels are made by machinery, and machines need oil. ouch

  5. muux says:

    Just use free energy…but no, I'm a conspiracy weirdo so don't listen to me…

  6. William John says:

    Hard to do it bro we can just talk or imaginate but it will be very hard to do

  7. alephii says:

    the future are graphene based batteries!

    Just Kidding!!!

  8. Aaron ___ says:

    some renewables are near their peak in efficiency given the laws of physics.k

  9. Mike Andersen says:

    What about algal biofuel?

  10. PeasantZilla says:

    I quite enjoy the compromise: most people in politics say we don’t need to go toward renewable energy when we absolutely have to. On the flip side, many environmental scientists say we need to convert almost completely today, when we literally couldn’t even if literally everyone was on board with the idea.

    Based off this a good idea would be to take it slow and steady. Continue to switch non-renewable for similarly profitable, and similarly efficient renewable energy sources

  11. Adam Nelson says:

    when he says super conductors need to be cold he means -89 not 34 so like liquid nitrogen not a refrigerator but yeah artist licence I get its cool

  12. Kevin Lane says:

    Why would deserts have more sunlight, year round, than other places?

  13. JohnFx says:

    "We need to find a way to convert solar energy into chemical energy". We have that, it is coal and oil.

  14. Hrishikesh Patel says:

    Amazing 😉

  15. Lalit Singh says:

    Battery technology needs a revolution

  16. oldcowbb says:

    "and politics"

  17. LA MILANESA VOLADORA says:

    EARTH-CHAN NEEDS YOUR HELP

  18. Dave Crane says:

    Did I miss something? Bio reactors and bio fuels were not even mentioned. Bio fuels such as algae convert sunlight into chemical energy. Bio reactors can directly burn organic matter such as tree trimmings (we have on in my county)

  19. Keran Kerai says:

    Yes it can but we are not near that stage

  20. Eric Davis says:

    What about just requiring all new homes and buildings being built be installed with solar panels and tax credits for property owners to add solar to existing buildings that eliminates the loss from power lines

  21. Anastatian Romani says:

    thank you for your help and support from Peace Mode Arena and Enlightenment Consciousness

  22. Adil Karimov says:

    Who can advise the best university to study the renewable sources of energy? 🙂

  23. H. Tomasz Grzybowski says:

    My tel. +48-780-129-544, email: htg@interia.pl I invented a breakthrough source of energy based on Classical Electrodynamics and on Circuit Theory. It will be useful e.g. for laptops and for cellular telephones. I am looking for capital in the range $500 000 to $5000 000 for prototyping, patents and production.

  24. Jacob The Jew says:

    Me me big boy

  25. Jdm DK Meme says:

    DAMB

  26. Paul Adams says:

    When we inevitably go fully sustainable and use geothermal, biomass, wave energy, tidal energy, solar and wind, cheap stable power will be the norm by …
    1: Using many renewable sources as listed above as even on a windless night the others are unaffected.

    2: Using suitable energy storage like batteries, pumped water, liquid air, biomass, hydrogen gas, molten salts, compressed air, pumped hydroelectric power, flywheels and many more.

    3: Trading energy over large distances, across continents then eventually the globe. This would even out supply and demand. This is one application that capitalistic free market economics would be most helpful by quickly managing demand and supply at all levels of electricity supply from micro grids to the largest scale.

    No new technology is need to make this happen as they are all currently in use, many for years As promising new technologies become available they then can be easily integrated into a modern smart grid systems.

  27. Paul Adams says:

    Roadster 2.0 go's from 0-60mph in 1.9 seconds – making it the first production car to accelerate to this speed in under two seconds.

    It will also go from 0-100mph in 4.1 seconds and cover a quarter mile drag strip in 8.9 seconds.

    In addition to this it has a range of 620 miles on a single charge which is almost double what the Tesla Model S has, thanks to its 200kWh battery.
    Battery technology has come a long way and is improving rapidly.

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  30. Ricky Williams says:

    [Awesome Plan Here >>>https://t.co/WqSHhReOxS ] Using this plan you can build any type of wind generator you want And the plan as so easy to follow that even a kind could do it.

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  33. Princess Lemmy says:

    Bio-fuel might be renewable but it's definitely not a "green' energy source. It pollutes more than nuclear.

  34. Shawn Taylor says:

    Oil spills in farm lands great! Earth worms disperse, birds die crops die, because of sensitive hippies

  35. Shawn Taylor says:

    Commie wealth redistribution

  36. LETHAL says:

    educational so I dislike

  37. Hernán Campos says:

    I'm Mexican and I'm studying engineering in renewable energies. I have to say that I'm in love with my career. We can change the word

  38. Mundo Salud Max says:

    I assure you that you will not spend more money on batteries, with this trick will return a dead battery to life,
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