The Truth About Pumped Hydro

20 feb. 2021
591 604 Weergaven

This video was created in partnership with Bill Gates, inspired by his new book “How to Avoid a Climate Disaster.” Find out more here: gatesnot.es/2ZnGCCg
Watch this video on Nebula: watchnebula.com/videos/real-engineering-the-truth-about-pumped-hydro
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Credits:
Writer/Narrator: Brian McManus
Editor: Dylan Hennessy
Animator: Mike Ridolfi (www.moboxgraphics.com/)
Sound: Graham Haerther (haerther.net/)
Thumbnail: Simon Buckmaster twitter.com/forgottentowel

References:
[1] www.irena.org/-/media/Files/IRENA/Agency/Publication/2020/Apr/IRENA_Energy_subsidies_2020.pdf
[2] www.irena.org/newsroom/pressreleases/2019/Apr/Renewable-Energy-Now-Accounts-for-a-Third-of-Global-Power-Capacity
[3] www.esb.ie/docs/default-source/education-hub/turlough-hill-power-station
[4]smartgriddashboard.eirgrid.com/#all/generation
[5] smartgriddashboard.eirgrid.com/#all/wind
[6] smartgriddashboard.eirgrid.com/#all/generation?scroll=fuel
[7] www.sciencedirect.com/science/article/abs/pii/S1364032114003773
[8] www.sciencedirect.com/science/article/pii/S0306261918305270#b0215
[9] www.hydroreview.com/business-finance/ireland-proposes-us-948-million-360-mw-silvermines-pumped-storage-project/#gref
[10] www.waterpowermagazine.com/features/featurejapanese-pumped-storage-embraces-the-ocean-waves/
[11] www.sciencedirect.com/science/article/pii/S254243511830583X
Thank you to AP Archive for access to their archival footage.
Music by Epidemic Sound: epidemicsound.com/creator
Thank you to my patreon supporters: Adam Flohr, Henning Basma, Hank Green, William Leu, Tristan Edwards, Ian Dundore, John & Becki Johnston. Nevin Spoljaric, Jason Clark, Thomas Barth, Johnny MacDonald, Stephen Foland, Alfred Holzheu, Abdulrahman Abdulaziz Binghaith, Brent Higgins, Dexter Appleberry, Alex Pavek, Marko Hirsch, Mikkel Johansen, Hibiyi Mori. Viktor Józsa, Ron Hochsprung

Reacties
  • Use Nuclear.

    Fyn FlorentineFyn Florentine6 uur geleden
  • Whenever there's enough profit to be made from solving the problem, the problem will be solved.

    Safety SteveSafety Steve13 uur geleden
  • This channel is very interesting with the new calc explanations, I really enjoy that!

    Olavo GazzolaOlavo Gazzola13 uur geleden
  • Excellent video but disappointed about the Bill Gates plug at the end, because he and his assets are part of the problem, not part of the solution.

    Wraithwrecker _Wraithwrecker _Dag geleden
  • Yes suck and pump with gaps between blades like.Leonardo 500 years ago ignore then swallow image on left its.good.for you.k

    Steven LonienSteven LonienDag geleden
  • LOVE THIS!

    Caleb FastCaleb FastDag geleden
  • 12:35 Ocean with salt water is the solution. and the high is greater than 1/10. Put underwater(ocean/salt water dont care) "baloons" to store energy, pump air in it. and release air with help of ocean presure and get energy.

    SLEVIN SHAFELSLEVIN SHAFELDag geleden
  • 9:30 i am waiting for Jhon B. Goodenght and Helena Braga solid state ceramic batterry to put and take out energy to the grid. 23.000 life cicles. that is 60 years lifetime discharge and charge each day.

    SLEVIN SHAFELSLEVIN SHAFELDag geleden
  • + nlworld.info/stream/x6hsIpJZRkqTKM9uY2kblA.html

    随便看看你的随便看看你的2 dagen geleden
  • You wouldn't need to supply 50% of the country's power 24 hours a day. You need it to back up wind power. So unless there are 24 hour periods where no where on the island has wind, you can limit the amount of storage you need.

    Robert ShortRobert Short3 dagen geleden
  • Talk about the sr1 again climate change Jesus buddy come.join us on the right

    luca dogluca dog5 dagen geleden
  • Please make a video about compressed air energy storage

    A MohA Moh6 dagen geleden
  • ONE FULL OF SHIFT IDIOT

    Mark H W Stafford mstaff657Mark H W Stafford mstaff6578 dagen geleden
  • If the shift off of thermal energy sources isn't stopped, we will collapse as a species. Co2 is good and a basic necessity of life. Stop thinking it's a pollutant people.

    drewtronicsdrewtronics9 dagen geleden
  • I am curious about what happens when it comes time to start retiring all these solar panels en mass. Like, can they be recycled?

    Norm aliceNorm alice10 dagen geleden
  • Could you please provide the source for the FF vs renewables subsidies?

    sailorbob74133sailorbob7413310 dagen geleden
  • You do realize nuclear power would solve our problems. We wouldn’t have to worry about energy storage because we don’t have to rely on the wind blowing or the sun being up and there is no greenhouse gas

    mikes1962mikes196211 dagen geleden
  • Electrolysis hydrogen fuel cell is 80% efficient. The product can be also used to run a car, or for manufacturing. Pressurized hydrogen can be stored indefinitely, batteries have a lifetime of a few years. If we wanna be truly green we need hydrogen fuel cell tech.

    Alan LiAlan Li11 dagen geleden
  • Molten metal batteries will be a better option alternatively, organic flow batteries might become available.

    ian cormieian cormie13 dagen geleden
  • You forgot to mention how much energy is required to pump the water uphill and into the holding reservoir and how long it would take to fill it up from empty. It's all good and well that it can generate an impressive amount of energy in five hours, but if it takes ten times more energy to pump the water up the hill and require a week to do it, then you would need many more pumped hydro stations than was estimated in the video.

    Mai-Lien OlssonMai-Lien Olsson13 dagen geleden
  • God bless you, you’ve opened my eyes in the last year or so that I want to pursuit Smart Grid as a uni specialisation and later on as an electrical engineer, you have my ethernal thanks Also, congrats on 3mills :)

    SirBalageGSirBalageG13 dagen geleden
  • Something that hard to embrace do to what is our current situation worldwide and what Bill gates stand for. Your idea lacks truth and objectivity on what is so called climate change resources, etc. Hope all how see this video have time to search and educate themselfs

    Fran FerrarioFran Ferrario13 dagen geleden
  • where is yoiur promotion of geothermal generation?... or are you just anither PC moutpiece?

    Lincoln LincolnLincoln Lincoln14 dagen geleden
  • Or you could just change the Trade and Foreign Policy. That should take far less time and money.

    Late NerdLate Nerd14 dagen geleden
  • 2:13 Holy Crap! Where'd you get that source video? That looks amazing and scary!!! Forget that you can't stand up, or catch your hair in the turbine, you're toast!!!

    ooglekooglek14 dagen geleden
  • It seems Like your robbing from Peter to pay Paul

    Tom ParkerTom Parker14 dagen geleden
  • i will talk about wind and solar when you can show me how you recycle ALL the parts! and that does not bury them in a landfill (wind blades, solar panels).

    Marte HoudesheldtMarte Houdesheldt14 dagen geleden
  • Climate hysteria and science shouldn't mix.

    Matt R.Matt R.15 dagen geleden
  • 7:37 made me and my sleep paralysis demon chuckle more then it should have

    Mr FruitMr Fruit16 dagen geleden
  • This is just a promo job for 'green' subsidies. He's Irish . . . . full of 'Blarney'!

    Mike O'NeillMike O'Neill16 dagen geleden
  • No such thing as "government funding" . . . . it's always taxpayers' money!

    Mike O'NeillMike O'Neill16 dagen geleden
  • Show me your peer reviewed study for human impact on naturally occurring climate change.

    Joshua MalcolmJoshua Malcolm16 dagen geleden
  • The maintenance on pumped hydro must be taken into account, it is not simply a battery of hydro, it includes expensive and expensive to maintain as well as expensive to power pumps. Plus evaporation must be accounted for as well. Water also has a tendency of soaking into subsoil, these are all losses of energy. Costly even at large scales.

    Deja VuDeja Vu16 dagen geleden
  • Nice video, having worked in the power industry in system operations for over 3 decades operating 2 pump storage facilities you were very accurate with most of the video. I only found one slight misunderstanding, the pony motors are used to bring the unit up to speed and synchronize the main motor/generator to the grid smoothly in the pumping mode. Once unit is tied into grid the pony motor is shut down. They are not needed in generation mode since you have water to spin the water wheel. Once unit is synchronized in pump mode the air is purged and gates opened, pumping starts the instant the water hits the wheel. At one time there was talk of sea level pump storage being built in NYC and was proposed to use subterranean caverns carved out of the bedrock as the lower reservoir. Idea was shot down but have to believe it might be used in other locations.

    Tom BixbyTom Bixby17 dagen geleden
  • 0:40 "Despite renewables providing a larger share of NEW capacity" lol nice try what a completely misleading argument. How much new capacity they provided is irrelevant to the point. Fossil fuels may have been subsidised more but they still provide far more overall capacity than renewables. If renewables were generating as much TOTAL capacity as fossil fuels they would have been subsidised to the tune of several billion dollars.

    Tony AlmeidaTony Almeida17 dagen geleden
  • Climate Change is Fake Science.

    Devin82mDevin82m17 dagen geleden
  • Lol there is a reason there are not a whole lot of these. What they do do is use a slow supply of power to pump a potential and then you dump the storage and peek demand then got back to pumping storage. This is not self sustaining now if you have a stream to tap then you have something totally different and have you noticed all of the dam failures In The last couple of years?

    Kinzie BurtonKinzie Burton17 dagen geleden
  • *Optimal Population*

    D JaquithD Jaquith17 dagen geleden
  • The calculation on energy storage increase by raising the height of the storage reservoir discounts the fact that a longer pipeline equates to a lower efficiency. One needs to adjust the efficiency (lower) correspondingly to the increased height of the reservoir.

    TheJarrodhTheJarrodh17 dagen geleden
  • Thank you for this video as always. It’s often a treat to find them on topics I am interested in. The one question I was really hoping you would answer...why water? When the power is flowing, it seems we could be lifting anything we want and just letting it back down when we want that energy back. So why use water? Ok you don’t want to suspend giant boulders cause extracting the potential energy has to be safe and non destructive... But can’t we increase the plants maximum capacity by just suspending heavy things in the water that we are already working with? Everything is already in place, just load up a barge with a bunch of rocks and thorn the whole thing into free extra capacity for the system. I am sure I am missing something obvious

    RKcuddlesRKcuddles17 dagen geleden
  • I mean... nuclear energy exists. This plan could be sufficient for grid peaks.

    Óscar GLPÓscar GLP18 dagen geleden
  • you use video of steel making pretending that it is a coal fired power plant. Your fear could spin more than one turbine at the rate you are going. Cost per Kw is still 3 times for a solar / wind kw than a coal fired kw. Demand/ generation mismatch is never dealt with. You are propaganda and nothing more.

    Brent HendricksBrent Hendricks18 dagen geleden
  • trash out valleys and mountaintops with windtubines/solar or just build nuclear reactors

    Yan MarchukYan Marchuk19 dagen geleden
  • "wind and solar can provide all the energy humanity needs" - said no actual engineer ever

    CalbeckCalbeck19 dagen geleden
  • There is a Dutch research study on how to build these things in flatlands

    Bob SinhaBob Sinha19 dagen geleden
  • Around 5:15 you say 22,451 seconds is 6.2 hours which is not correct. That would be 374.2 hours

    Meta MotorsportsMeta Motorsports19 dagen geleden
    • 22451 sec / 60 = 374 min 374 min / 60 = 6.23 hr

      Brandon PosthumaBrandon Posthuma13 dagen geleden
  • ask a texan!

    Kevin LloydKevin Lloyd19 dagen geleden
  • I'd like to ask for some clarity on the energy subsidy data. While $447B is approximately 3.5 times the $128B, fossil fuels still make up 80% of global electricity generation while fossil fuels are roughly 5%. Per percentage of energy generated fossil fuels would cost $5.58B while the same energy percentage in renewables would cost $25.6B. Is the chart total subsidies or per unit of energy generated?

    CallsignLOBO !CallsignLOBO !19 dagen geleden
  • We need to get money out of politics. There is no other way to explain the fossil fuel subsidies that still occur.

    Ben HigginsBen Higgins19 dagen geleden
  • Multiple methods for sure. This is a great video.

    Bobby ChangBobby Chang20 dagen geleden
  • solutions....just ask me

    Mickael WilliamsMickael Williams20 dagen geleden
  • Well Texas just proved to us that you cannot depend on just wind and solar nuclear is really the safest way to create electricity and it truly is zero emissions unlike hydro wind and solar

    Chevy boy For lifeChevy boy For life20 dagen geleden
    • @Chevy boy For life Texas proved that you need legislation to weather proof the energy grid... We have no issues with freezing wind turbines here in Sweden, because we have good legislation.

      Zuurker UZuurker U20 dagen geleden
    • And the lakes made from hydro power is devastating to the local wildlife

      Chevy boy For lifeChevy boy For life20 dagen geleden
  • When you start the video with rubbish there's no point continuing.

    Matthew KerleMatthew Kerle20 dagen geleden
  • Have you looked at liquid air?

    Manzour AhmedManzour Ahmed20 dagen geleden
  • Obviously solar and wind power are nowhere close to being able to provide the power we need, nor will they ever be for absolutely obvious reasons a child can figure out. Dislike + Unsub.

    noth606noth60620 dagen geleden
    • @Zuurker U Nope, the problem with both is that they depend on it being daylight for solar, and windy for wind power. Hydro and Nuclear are by far the best we have right now as they both provide constant dependable power. If some form of solar reflector system were to be built in space to get around the problem of not getting solar power during the night that could be fixed but not in a decentralized manner, but we don't have that made right now. Germany and some other European countries have invested heavily in wind and solar, and now have an inverse issue whereby they export power almost for free during the day but have to buy it during the night and on overcast days with too little or too much wind (wind power only work when there is a set amount of wind speed, too much or too little means no power). Another possibility would be to use large amounts of batteries which is being tried in some places but that has other issues aside from cost, the battery technology is "dirty", uses rare earth minerals that are difficult to extract and refine and that process itself is very polluting right now and controlled almost completely by China. So, at this moment my statement is still true, but in the future we could find ways to fix the problems that solar and wind have, but we do not have a really good solution for the problems right now.

      noth606noth60619 dagen geleden
    • @noth606 No, bud xD Wind and solar could easily power the grid if enough investments were made... Though, it might not be a good Investments it can still be done. Solar and wind are the "best" electricity generating sources now because they succeed where every other producer fails, they decentralize the energy grid.

      Zuurker UZuurker U19 dagen geleden
    • @Zuurker U True, and what I said are pure facts, nothing to do with feelings.

      noth606noth60620 dagen geleden
    • Facts doesnt care about your feeling. :)

      Zuurker UZuurker U20 dagen geleden
  • There is no climate crisis, jerk face. Humans are not destroying the planet by using fossil fuels. If renewables were truly beneficial over fossil fuels and offered a real return on investment, the free market would actually USE It. How about you start doing some REAL research. Unsubscribed over your shitty opener

    Michael LenczewskiMichael Lenczewski20 dagen geleden
    • Found the snowflake xD

      Zuurker UZuurker U20 dagen geleden
  • 1 cubic meter of water weighs 1000kg not 1kg but I get it. Everything was correct exept the prefix. Switch "cubic meter" for "cubic decimeter" and your done. Easy mistake. Yes, I am a science teacher.

    Axel LundgrenAxel Lundgren20 dagen geleden
  • It seems like there a few places co kerry mountains etc.... I think more places like that are possible

    Paddy TPaddy T20 dagen geleden
  • This is the side of humanity I like to see ! This gives me hope, maybe just maybe we still have time before it's to late.

    Nina ToteNina Tote21 dag geleden
  • So, what is the ratio of energy consumed while filling the resevoir to energy produced while generating power?

    Chuck AddisonChuck Addison21 dag geleden
    • I read somewhere that pumped Hydro is about 60% efficient. That is from energy production to home delivery.

      Zuurker UZuurker U20 dagen geleden
  • Nothing abojt the carbon foot print or the cost and ROI.

    ciaranbrennan16ciaranbrennan1622 dagen geleden
  • You are not qualified to make climate statements, stick to facts and not r sicilist propaganda.

    ciaranbrennan16ciaranbrennan1622 dagen geleden
    • @Zuurker U I think you are the snowflake, you probably wear a mask everyday and stay indoors.

      ciaranbrennan16ciaranbrennan1620 dagen geleden
    • @ciaranbrennan16 Found the Anti science snowflake xD

      Zuurker UZuurker U20 dagen geleden
    • Thinking the world is not going to use oil is just stupid. People use every last drop of it. You should probably live in a cave and be carbon neutral!!!

      ciaranbrennan16ciaranbrennan1622 dagen geleden
  • You should stay out of politics, and stick to facts,.

    ciaranbrennan16ciaranbrennan1622 dagen geleden
  • Not just one solution. Yes there is. Ten or so SMR's available 24/7/365 Two in each of the old peat stations for starters. Next to them using much of the power, again 24/7/365, big data centres each using a couple of hundred MW of power. Then using the waste heat of these and the SMRs a vast area of 24/7/365 LED lit, hydroponic grow houses for salads, vegetables, cut flowers, avocados and G God knows what else. Then next to them the Soldier Fly farms, the larvae eating the processing wastes and also much of our one million tonnes of food waste a year here in Ireland alone. Then the fish farms and the chicken, both at present two of the most horrific environmental scandals on this planet. Then the rest of the bog areas for carbon, phosphate and nitrate sequestration. How criminally stupid we have been to put all our eggs in the wind basket, making billions for our home grown Oligarchs who have now sold out the real pushers behind the scene, the fossil fuel corporates, eager to have us over the metaphorical oil barrel for filling in the big gaps, not twelve hours, but with a winter blocking high, potentially two or three weeks, like in Nov / Dec 2011.

    Nicholas GrubbNicholas Grubb22 dagen geleden
  • Propaganda at its best. Great production skills and selective facts makes it entertaining, but misleading. Well worth watching but also look at The Planet of the Humans for a more realistic presentation of the real world.

    CHARLES CamenCHARLES Camen23 dagen geleden
  • Placing a facility like Turlock hill at the base of a mountain or maybe a lock system maybe a system like this installed on Panama Canal

    Tom JonesTom Jones23 dagen geleden
  • They aren't cheap because of their variability.

    PistonAvatarGuyPistonAvatarGuy23 dagen geleden
  • Oh, for crying out loud, just build one nuclear station and be done with it.

    Energy GuyEnergy Guy24 dagen geleden
  • Can we all just take a Moment and appreciate how greatly the BIM and Design of the Thumbnail, the Editing, the Animation and the visual Design in general improved in the last few months. It's a shame that this kind of content doesn't get into developing world due to corrupt governments and ignorant bureaucrats. 25

    aijaz ahmed siddiquiaijaz ahmed siddiqui24 dagen geleden
  • Ok, see Linthal 2015 project, Switzerland.

    Lennart JanssonLennart Jansson25 dagen geleden
  • No truths at all, shameful.

    Lennart JanssonLennart Jansson25 dagen geleden
  • A brief on Hydroelectric 2 nd stage power recovery system This system is for all hydro systems running with a TAILRACE setup Why a tailrace setup ? In an ideal setup without the need to modify the construction plans to fit into a geological or given plot of stable ground, the benefits are not lost to compromise. As however in the real world hydroelectric systems are generally a compromise, and the TAILRACE is invariably longer than the turbine hall would find IDEAL in regards to power made per ton of water used - a loss that can now be recovered With the turbine hall believing a shortened tailrace has been fitted this allows the turbine hall to make more power out of the same volume of water IT IS WISE TO NOTE TOO SHORT A TAILRACE AND A SURGING ISSUE OF THE TURBINES WILL OCCUR, leading to its self destruction What sets how short the tailrace can be made? Because each and every dam is in effect a custo- made system, and so the type and number of turbines at the location dictate the power recovery units location in the tailrace But there are basics that are common to all hydro installations Example of why a shortened tail race works A different way to look at what is happening at this point is: You buy a 2 stroke motor to fit to a go-cart but it needs a bit more power. The quickest and cheapest way is to get a tuned exhaust pipe - it’s generally a shorter and larger pipe This allows the motor to breathe freely and returns a boost in power output with just the right amount of back pressure Firstly Back Pressure This new setup will not generate a backpressure issue to the dam (a common reason why to date the industry has failed to benefit in this area). In short blinded by their education. A stumbling block that has been drummed into every Engineer so no one looks at this sort of issue as solvable Secondly Down Time The assumption is made that to build this system would mean the dam will be offline for years when 90% if not more of the installation will not require the dam to shut down and the final step can be taken during the annual servicing period of the dam The freeing- up of the turbine hall from having to work with a tailrace that is now tuned to the best power output. NOT distance to the discharge point! And along with my new 2 nd stage turbine power recovery systems the return should be 3- 8% more annually combined Thirdly Servicing With no extra shutdown periods needed to service the new power recovery system as this can happen independently And should a unit go offline in say a three-unit setup, the offline unit can be swapped in a day without the need for the remaining two units being effected OR the turbine hall operations The end of the tailrace will continue to spill out into the existing lake or river location with only one extra outlet fitted to handle the same water volume, but now at a slower pace so that all works are easily able to be environmentally completed If a pump hydro system is used this will not alter the setup or require modification It should be noted that this system has less parts to an equivalent turbine setup so there are less failure points And is expected to outlast the required life expectance of the dam NOTE Chinas hydro output to date is: According to IHA's 2020 Hydropower Status Report, total hydropower capacity reached 356 GiggaWatts in 2019 after a further 4.2 GW in capacity was added China's total estimated hydropower generation reached 1,302.00 TerraWatt hours. FINAL POINTS So say China’s hydro output was up by a further 3% only (as not all China’s dams can run this system). So what is that worth as annual income to the country? It should also be noted that a new dam construction with a penstock hydro system fitted will double the return in secondary power recovered and still be serviceable without impacting the turbine halls operations simon bowman rdp marine facebook

    Simon BowmanSimon Bowman26 dagen geleden
  • What is a pony motor?

    h lh l26 dagen geleden
  • Why did you say that hydrogen is the only solution for long-term energy storage, when you recently posted a video about Ambri’s liquid metal batteries?

    RikRik27 dagen geleden
    • It's not borught to the market yet. There's a huge difference between researching something and testing it in small scale and actually mass producing it at a cost where it's worth it.

      CCCC26 dagen geleden
  • Ya lost me at Bill Gates.

    Tom in Puerto RicoTom in Puerto Rico27 dagen geleden
  • Utter BS...

    Pedro SantosPedro Santos27 dagen geleden
  • Hello, I am doing a thesis on hydroelectric power plant design, but I could not find a clear enough source. If there is a source that explains the principles of hydroelectric power plant design step by step, could you suggest you know?

    Mühendislik TeknolojiMühendislik Teknoloji28 dagen geleden
  • ......Quoting Bill Gates on Climate science is like quoting me on gender studies.....I know nothing..... Seriously, don't quote big named people in fields they know nothing about... It'll make you a sucker for their eccentric divinations.

    ShinobiwanShinobiwan28 dagen geleden
  • Disliked because of the Bill Gates collab.

    William LindsleyWilliam Lindsley29 dagen geleden
  • Come on. You know better than to say that renewable is less subsidized than fossil. Fossil fuel still provides the vast majority of energy production. In dollar per killowatt, subsidies are much higher for renewables. From an immediate economic outlook fossil fuels are still far cheaper. Hydro is the exception, it is cheaper than fossil fuel, but environmentalists block almost all new dam construction. Only if you account for the damage caused by fossil fuels do solar and wind become extremely attractive. I don't hate renewable power, in fact I have loved solar from an early age. I plan on going off grid with renewables. I just don't like dishonesty.

    William LindsleyWilliam Lindsley29 dagen geleden
  • @RealEngineering Just a question... If the draw of power to pump the water back up to the top is bugger all, then why couldn't you put an extra turbine to directly power to the pump so it's filling up as its producing electricity? Or run something like a dynamo off the turbine shafts ? Anyway just wondering? Excellent work, Interesting, informative , and unbiased and balanced.

    woodywoody29 dagen geleden
  • Although a good video it is still looking at the issue from a centralized power grid. The Australian National University in partnership with Engineers Australia did a preliminary study that identified tens of thousands of locations where small/medium scale pumped hydro schemes could be established. This fits in with distributed power grid architecture where the energy is generated close to the load (and obviously stored there as well). This is in Australia, the driest continent on the planet! The Australian Government, of course (being backward as usual and liking flashy announcements) decided to extend the Snowy Mountain Hydro Scheme with all of the issues listed in this video. As a minor point, the term power generation is fine but when you are talking about generating AC the device is an alternator, a generator is used for DC. In many respects DC generators have advantages over AC alternators courtesy of modern technology, so they many indeed be generators in the future. >>;-)>

    Robert NicholsonRobert NicholsonMaand geleden
  • Everyone is always talking about hydrogen for long term storage and the automotive industry, but methane arguably just as appealing. This might be because methane is more commonly associated with natural gas, which is not an energy storage medium, but it can be used in the same role as hydrogen in power-to-gas nonetheless. Methane has a lower conversion efficiency to hydrogen, and the process is more complicated and costly than for hydrogen. That being said, methane can make use of existing natural gas infrastructure, which could help to reduce costs.

    dangerous_safetydangerous_safetyMaand geleden
  • Just imagine where we would be now if a decade or two ago, all subsidies for fossil fuel had simply been transferred to renewables. Why didn't it happen even though the 'writing was on the wall' mtkass.blogspot.com/2018/01/wasted-effort.html

    William Hughes-GamesWilliam Hughes-GamesMaand geleden
    • Subsidies are evil and should not exist in the first place. And it is because we need fossils. At least till we got a viable way of storing energy.

      taurustaurus24 dagen geleden
  • 14:20 only problem is, it's "too sunny", all the water would evaporate unlike the irish example

    pro hackerpro hackerMaand geleden
  • I'd love to see you do a video on concentrated solar power. The idea of using mirrors to reflect the suns light and heat water to produce steam, so that we can generate energy is really cool.

    astrolover 95astrolover 95Maand geleden
  • The Truth about Gates

    mud winmud winMaand geleden
  • The Science behind AGW is suspect. The real issue are the pollutants mankind has, is, and will try to dump into the environment. If not addressed some critical connection in the biological cycle will be irreversibly broken and the life further up the food chain dependent on it remaining intact will fail. Do not confuse the real issue with political misuse of Science. A green herring. Government solutions invariably waste opportunity and wealth almost with glee. Because bureaucrats are what they always were and always will be. [Proof: the cost of education and the result? The Welfare industry and the result? The medical industry and the result?]

    Peter ClarkPeter ClarkMaand geleden
  • The truth aboush whash bad pronounciation does to a perfesh subjesh

    Friday CaliforniaaFriday CaliforniaaMaand geleden
  • "Imagine having to pollute the world in order to make relatively short-lasting batteries made from scarce materials so you can store green energy in" - This post was made my pumped hydro gang.

    MBD Main Battle DankMBD Main Battle DankMaand geleden
    • Works to sell oil try drowning like betz limits does Elimitnating half the winds and tides between ears.looped.103 years now

      Steven LonienSteven Lonien12 uur geleden
    • @robas porcu ok by me anywhere can spin 3 ft + stainless a4 shafts in magnetic bearings at light speeds drafting rpm that's added to in winds and or tides x1000 constantly spinning plenty.k w .s out.but for greed priority.of the elect. Not yet and.for sure its.Einstine learning curve

      Steven LonienSteven LonienDag geleden
    • Yeah everybody ignores einstine infinate winds and currents its.samo.same betza limits 500.years and little time for 2 guess getting ride.of oil and nukes best way to survive.there pollution they deny.

      Steven LonienSteven LonienDag geleden
    • It isnt black or white, transportation of eletricity over great distances leads to loses and not every place can build a dam, there are alot of ways to store energy hydrogen production and "hot rock" ar the ones I think have a lot of potencial

      robas porcurobas porcu10 dagen geleden
    • @BrokenLifeCycle The standard product model for manufacturing sees established producers adopt new technology, then leverage the cash stream from high value Early Adopters to fund bringing the line to the mass market. Musk has subverted that cash flow with, albeit clever manifacture of hype, and with no ability to bring EVs to the mass market. indeed established manuifacturers (with often far superior products) have seen failure after failure to entice early adopters and severaly hampered the standard model. Musk has easily added 10 years to EV adoption which was building significantly driven by established players unti lhe "disrupted" the market.

      Alasdair AllanAlasdair Allan18 dagen geleden
  • Bill Gates ?? Are you a fucking moron? His climate foot print is bigger than most small countries !!! 3 private jets, fleet of 911 Porsche, a private house with a carbon foot print bigger than many US small towns. Bill Gates as climate guru is the biggest oxymoron in human history. ox·y·mo·ron noun: oxymoron; plural noun: oxymorons a figure of speech in which apparently contradictory terms appear in conjunction (e.g. faith unfaithful kept him falsely true ).

    Chris MartinChris MartinMaand geleden
  • quick and easy solution = depopulation

    joe sammet 911joe sammet 911Maand geleden
  • bullshit, this guy is talking absolute bullshit about renewables. if Ireland ever followed what this clown is talking about they would have big problems providing energy for their population meanwhile this idiot would probably be living in london.

    Al CaponeAl CaponeMaand geleden
  • While I agree that fossil fuels are a convenient but very messy and pollution ridden way of getting energy, I also disagree with this perspective as it is presented. The advancement of technology that has been based upon traditional means of power generation allows us to actually provide a vast array of 'bespoke' solutions according to the given environment involved. (Obviously low wet flat lands, differ from deserts which differ from mountain ranges, or jungles etc.) Also since truly effective alternative means of mass energy production can never (and will never) be discussed here, it's a disingenuous to simply present such a simplistic overview of the (utterly man made) problems we face in energy generation and distribution. (i.e. Solar and wind good, fossil bad)

    yelbuckyelbuckMaand geleden
  • hydroelectric and nuclear mini and micro reactors might be the way to go in the future...plus some help from wind solar.....but the latter won't do much....heavy transport/loads....don't work with electricity...I mean shipping ....airline ....trucks etc...natural gas will help too

    PEDRO LUIS CARDENES QUINTANAPEDRO LUIS CARDENES QUINTANAMaand geleden
  • global warming does not exist....in fact hundreds of years ago it was worse...they are solar cycles...sun is ejecting ...rainfall and snow can also be fabricated and manipulated....pollution does exist...a different matter

    PEDRO LUIS CARDENES QUINTANAPEDRO LUIS CARDENES QUINTANAMaand geleden
    • @taurus if you have the ability to read between the lines...the first sentence meant to say ...global warming does not exist...DUE TO HUMAN ACTION....think my intentions were pretty clear....but yeah if you take words literally...yes you are right sir

      PEDRO LUIS CARDENES QUINTANAPEDRO LUIS CARDENES QUINTANA24 dagen geleden
    • Your second sentence contradicts the first. Sure, it was worse.. But humans were not there when it was worse. This is about us and preserving our environment. Besides, the temperature changes weren't this erratic, so we do have impact.

      taurustaurus24 dagen geleden
  • solar and wind will not save us sorry.......only contribute a share

    PEDRO LUIS CARDENES QUINTANAPEDRO LUIS CARDENES QUINTANAMaand geleden
  • Ooof, I really, really disagree with renewables being part of the solution. Nuclear can (and must) be done at smaller scales. Renewables are, at best, a time & resource wasting distraction. At worst, they are a straight up detraction from our efforts.

    Gareth FaircloughGareth FaircloughMaand geleden
  • If you had 45 cubic meters (a 1x5x9 meters) of mercury suspended 10 meters above the ground, that would be equivalent to a single Tesla powerwall. Pretty extreme, but not entirely stupid.

    Grayson SmithGrayson SmithMaand geleden
  • Dang 80% efficient?! That's better than any part of hydrogen fuel cells. I guess though you can store more energy with hydrogen though.

    Grayson SmithGrayson SmithMaand geleden
    • Storing a lot of energy with hydro means you need mass and height. No problem in mountain regions with low population. Impossible in my country with our flat wetlands with the among highest population density (The Netherlands) Honestly for us i see no alternative for a couple of nuclear powerstations. Which means we need to rely on other countries to "take care" of our nuclear waste. There is no perfect solution.

      1barnet11barnet1Maand geleden
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