Can We Reach 100% Renewable Energy?

1. whats the point ? ALL renewables will NOT continue due to monetary loss.

   Who would invest in renewables when Free energy is free? FREE DOES NOT COST, NO COST MEANS NO INVESTMENT DIVIDENDS FOR INVESTORS, THEREFORE GOODBYE RENEWABLES.

   The ECONOMY is destroying the environment and the ENVIRONMENT will destroy the economy!

   YOU WORK OUT WHICH ONE HUMANS NEED TO SURVIVE!

   https://youtu.be/UfrxgueM_d8

2. I bought instruction from Avasva and I build it very very cheap.

3. If they WISH to pay:
   http://www.youtube.com/watch?v=5g8DD01B89g
   and witness their industry go away…

4. A very important discussion, as they say "There is no planet B", so we all need to take care of it very dearly.
   Thanks for the Real Journalism.

5. This is not all factual. Not possible at currrent technology. How are you flying planes on renewable energy? You are not. Don't drink this KoolAid. Note " no electricity use at certain times" Remember Solyndra = failure. 100% is not viable, ever. If you are serious, don't take it out on USA> Attack China, India, other countries. Saves no one money. lies.

6. This man should head the EPA

7. It's beginning to look as if the real urgency for converting to renewables is to stop the millions of deaths annually from air pollution, including indoor air pollution in places where there is little or no electricity. What everyone seems to be ignoring about CO2 is that it can be removed from the air. It will be expensive and take a hell of a lot of energy, but renewable energy is just what will make all that affordable. CO2 removal is feasible, AND it will be NECESSARY. Convert to renewables ASAP. Then remove the excess carbon. The really dire forecasts about CO2 assume no carbon removal. But we can do it. Convert to renewables A.S.A.P. Let's get rid of those particulates. I'm in favor of people having clean air to breathe.

8. I hate how these renewable deals exclude all the options. Just because there are issues with some options does not mean that you cut research, subsidies and spending in them, which could make them safe, cost competitive and sustainable. Energy reclamation from waste and nuclear are excellent technologies, and even if current versions of their technologies may have hurdles or be expensive, it does not mean that this represents the ultimate potential of these technologies.

   Also, creating more employment positions in the energy sector is actually a bad thing. More people in the energy sector means more expensive energy and a less competitive economy. The goal should instead be to reduce overall employment positions in this sector while providing reliable and clean energy.

9. This is the dream.

10. This is nonsense. Getting 100% carbon free using wind and solar power is impossible because both need back up, and that can only come from fossil fuels. Storage is not viable because of the cost. BTW the UK went days without coal because it has been replaced by gas. During that period there were 2 days when wind power supplied less than 1% of demand and still no coal was used, but gas was running at 60% and nuclear at 20%. The rest came from biomass, solar, and import from Europe. The only way to get 100% carbon free is to build a lot of new nuclear plants. An interesting recent study found that both California and Germany have already spent enough money on renewables to have got all their power from nuclear, yet both are still getting about 50% from fossil fuels. To eliminate fossil fuels from electricity generation you have to use a solution which works, and renewables have failed in that task in every country which has tried it.

11. As others have pointed out in these comments, in order to get to 100% renewables we must first get rid of our lousy political systems which favour the status quo of reliance on fossil fuels and keeping rich corporations happy. Budah of Birmingham

12. Mother Nature doesn't give a f**k whether or not you get to 100% renewables by 2045 or 2050.
    She says you've got 12 years.

13. What is there not to like about changing to renewable's ? It creates jobs and it save massive amounts of money on health care and climate change related cost. Stick that in your pipe and smoke it. Haha. BTW, I just bought an electric car. Love driving PAST those $ sucking gasoline pumps.

14. How can renewables be cheaper then any other energy type and therefore out compete other energy sources without the need for carbon taxes and further government investment in nuclear power?

15. For those looking for an alternative perspective on all this green hippie nonsense: https://www.youtube.com/watch?v=sitPeRlTdNs

16. I think though, nuclear should also be included… There is no pollution and I am questioning any study that shows that much cancer for uranium miners (there are still many other options and new technologies) I'm for any energy that will stop societies use of fossil fuels…

17. This is rose tinted glasses. We have had decades of trying very hard to make renewables work and they have proved to be an expensive failure. Solar is very peaky in output and is virtually useless in countries llike the U.K. in winter, low output and none when demand is greatest.
    Wind is unstable and intermittent which causes problems for grids. It's achilles heel is it's cube law output relative to wind speed. The grid needs the inertia of large rotating turbo alternators to keep the frequency stable. The more the percentage of wind generation on the grid the harder it is to restart the grid in the event of a trip, ask South Australia, they have had lot's of experience.
    this is not the way forward. The fact that these technologies do not work well has brought out ways to try and minimise their poor performance such as demand response, reduced demand from efficiency gains, batteries which can never solve the intermittency problem.

18. Interesting. But while Dr. Jacobson mentioned the dangers of uranium mining for nuclear power, he sidestepped the issues around lithium mining for batteries, even after Ms. Noor asked him directly about this. He also didn't mention anything about dealing with the mountains e-waste to be generated by accumulating defunct solar panels over the coming decades or other environmental costs of great swathes of land being given over to wind and solar farms, or waterways to hydropower dams. None of these technologies is 100% environmentally safe and free and infinitely renewable, when considered from end to end. Why is nuclear always singled out as the worst option among all of these imperfect options? The case is never clearly made for leaving it out of the mix of solutions.

19. I'm becoming increasing convinced that the new nuclear designs such as modular / molten salt reactors are even greener than 'renewable' energy.
    https://youtu.be/xs8p8rYRLBM

20. yes! we can reach 100% renewables by 2060 completely!!

21. A bit long for some but why didn't we know this before?……..the fuel industry? Can burning trash be used to smelt iron?

22. We need to stop the decommissioning of nuclear power plants to not delay fossil free power generation.

23. Hmm… From 5.9 trillion down to one trillion? Did I hear that correctly? Well, I'm all for one hundred percent renewables but the scale of deployment is huge and if there is one thing that American business is good at is learning how to monetize things, I think that in the end, Americans will be paying more for energy, one way or another… Guaranteed.

24. One hundred percent may be possible but I don't think it'll happen without a grid scale battery, like that which Donald Sadoway of MIT is trying to market. Lithium batteries are not grid scale, they're expensive, and must be replaced as they degrade quickly.

25. A serious rebuttal to Jacobson without the hype from a year ago: https://www.youtube.com/watch?v=V2KNqluP8M0&t=562s

26. I think in places like Australia and middle eastern country

27. another so called expert who doesn't know thorium nuclear reactor could actually help as its the opposite to what old nuclear technology is…

28. We should all be using electric vehicles charged from the excess power generated from our home, business and covered parking rooftop solar arrays making nearly everything we do 100% solar powered.
    
    The cost per distance driven is ridiculously cheap when you are your own solar fuel station (less than $0.01 USD per mile)! #nobrainer
    
    We cannot afford to continue to burn fossil fuels!

29. https://www.pnas.org/content/114/26/6722?utm_source=akdart

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