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The 'duck Curve' Is Solar Energy's - Why Japan Has So Many Vending Machines - Ufl Video Sharing.

The 'duck curve' is solar energy's Why Japan has so many vending machines 4 months ago   03:58

Renewables require change in the energy supply chain.

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Electricity is incredibly difficult to store, so grid operators have to generate it at the exact moment it is demanded. In order to do this, they create incredibly accurate models of the total electric loads, that is how much energy will be consumed on a given day. But as utilities started to produce more energy from renewable sources like solar, the models started to shift as well.

California researchers discovered a peculiarity in their state’s electric load curves, that started to look more and more like a duck. And that duck shaped chart highlights the greatest challenge to solar energy growth in the US.

Vox writer David Roberts has been covering the issue for a few years now. You can read some of his past explainers on the duck curve, and its solutions at the links below:





And if you would like to read some of the source material used in the video above, you can check those out here: https://www.caiso.com/documents/flexibleresourceshelprenewables_fastfacts.pdf https://www.nrel.gov/docs/fy16osti/65023.pdf

Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com.

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Comments 5521 Comments

John Feesey
What the duck ? :P
Battery technology will change all of this for ever.
Rob Gibson
Sounds like they need to encourage/incentivize battery backups at homes. I'd like nothing more than to be completely self sufficient. But it's cost prohibitive right now.
Mike Wate
elon's battery banks will solve the problem, dog
Éric Fortin
In the northern hemisphere, solar is only cost efficient south of the the 35th parallel considering the amount of hours of sunlight available and the efficiency of the panels themselves. Solar panels take more energy to produce than it gives back in it's 25 years life span so there is no benefit to the environment. Germany subsidized a trillion dollars conversion program to solar and their citizens pay their electricity at least 4 times the price that I pay In Canada...this is the true cost of something that is in anyways energy efficient.
G Lewis
Turn all that overgeneration into bitcoin value as they do everywhere else there is overproduction in energy.
Shed a tear for big coal.
I'm Only A Man And I Will Die Some Day
And here I was thinking that solar energy's greatest challenge was that it's 47cents per kilowatt hour. But what do I know, right?
Daniel Chilton
Invalid conclusion!
The last line is about "Renewable Energy" But the video was specifically about only the solar part.
Their conclusion does not apply to Wind.
This video also overlooks the role of long distance power lines, pumped storage, and
demand side management... not just 'curtailment.'
Halvard Bødalen
Water power can fix the problem
Sam Nolan
How can they use the quote about 0:24 whilst quoting one of their writers? This entire video is a quote from a Vox writer?
Bob Chen
solution : Offer factories, commercial building and farming a more favorable electricity rate during day time than evening time. a lot of energy intensive operation in factories can be done during day time.
New Acc Who This Boof
A very big battery

Oh wait it's being built so problem solved???
Benjamin Tsui
I see so many angry comments about why vox didn’t discuss battery storage. Right now, battery storage is not economical at current battery prices. Therefore, it isn’t viable on a global and sustainable basis.
Manuel Vilaça
As a guy with with a Master in energy this video is completely stupid. The amount of solar produced now doesn't even make the tiniest dent in the demand.
Batteries store the energy not used in the day and if its full then it just exports to the grid. Really the solar energy's greatest challenge is centralisation dominated by the big energy companies and lack of most of the worlds governments to invest in solar for their people. I see miles of profit making solar panel farms all over Europe yet most people are still paying for energy.
Cristian Lopez
I guess we need to design bigger, and more efficient batteries. If a plant can store energy for the night time we can too.
Thomas Howes
This video is very interesting. Http://marylandsolarprogram.com
Mertens Lachs
Just pump water up a hill and let it flow down at the night producing electricity
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Why Japan has so many vending machines The 'duck curve' is solar energy's 4 months ago   04:47

What vending machines can teach you about this country

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While in Japan I noticed vending machines everywhere. Looking into it a little deeper a discovered that there's a very interesting answer to why Japan has so many vending machines. It's an economic story but it's also a story about how Japanese society values robotics and automation.

I even found a business card vending machine: https://ufl.ae/videow/Ewr7VopGxra

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