to bolster israel's defense, as often out of next kind of a examines the concept of concentrated solar power and told me a lot of the on the long voyage through the ocean, another humpback well with the calls for a long time, they had to be a humans on the journey now the trenches have become very protective of whales until the results of the ocean conservation start september full dw, this shadows. these pod costs and video shed lights on the dog is devastating. colonial har is infected by germany across and he employed a score,

supposed farms and destroyed lights. what is the legacy of this wide spread races, depression? today? history. we need to talk about here, the stories, shadows of german colonialism. the check out this documentary from the late seventy's, the light is converted directly into electricity. no moving parts. it's the perfect solar machine. people were fascinated by photo voltaic solar cells. it's just, they were outrages lea expensive. this is the biggest collection of photo sales ever assembled. it cost a quarter of a $1000000.00. it only produces enough electricity for 3 or 4 families. and that's what arrival technology came into play. large merits. that's kinda also tons

sunbeams into electricity by focusing the light from the sun and using its heat. what you're seeing is the world's 1st commercial solar and electric power plant. it's called solar one. concentrated solar power seems like the most promising solar technology big event, but skipped to today. and it's been almost completely forgot the story behind it. this one of great expectations, your clique consistent and reliable energy. equally big disappointment that present doing this project failed and may be one of revival because concentrated sola can do one very crucial thing that sold a sales cons. oh, you might just seen a concentrated solar power or see is p plants that looks like this before. especially if you into your hollywood, sy fi the steep times can also look a bit less futuristic like this. but fundamentally, they work the same way. they use a mirror as to reflects and concentrate sunlight,

is simply they could. i mean, did they should that, that is coming from this. i need to know that this is chubby lotta, who called themselves a csp evangelist. he's a mechanical engineer who has worked on many concentrated, sold up projects around the world. so the consulting abilities of the $1000.00 times to send united lucky, bubbling, and this type of csp plans for that particular point is, would be the top of the tower inside it as a fluid, easily molten salt. so salt and it's a liquid form that gets heated up by the sun's energy molten sold to spend compounds with generates up that boils water to produce sleep. which in turn can be used to spend a turbine that generates electricity. the same time that you can cause, you know, i'm not a small uh, let's say the flushing bubble time. but we solve the problem even if you need flush and flip after that's the salt has cooled down. so it gets pumped up, the towel and the cycle stops again. and for this process to work properly,

do you need a lot of direct sunlight, which is why you find some plants and countries like chile, morocco, the united arab emirates, or india. but most of them on the hot pots of spain in the us. so why is it that when we hear solar energy, most of us immediately think of photovoltaics solar cells and not mirror us, but concentrate sunlight. i'm old enough to remember in 2010, 0. so we will super optimistic about solar at the industries to generation. jenny? chase is a solar analyst at the energy research from bluebook and yes. back then that word, for example, big dreams to set up huge, concentrated solar plans in the hot rock and sent the electricity to europe via cable for a long time. so this type of was the main utility scale. so technology, however, what happened then was that it makes it up to 10 numbers. you got the tape. and 1st of all types go super cheap. in a little over a decade, the price for electricity from solar photovoltaics dropped by almost 90 percent.

there were a bunch of reasons for this main, the policy support in germany, which kicks out to the growing solar industry in china. we come with them in this video, you should check out after this concentrated solar power also became cheaper. about $102011.00, it started costing more than foldable takes today. it's more than twice as expensive. this meant people begin to turn away from it and put up ever cheapest solar panels. instead. it wasn't so much that sold a sample last, it was one of the physical size one. that is also because we've sold a family or concentrated solar. every single mirror needs to individually check the sense of movement. so they always direct the race to exactly the right points. and depending on the size of the plants, this could be thousands of mirrors. and then you have to account for clouts, which may block one part of the mirror of fields, but not all of it. that makes it hard to control the temperature at the top of the tower, which needs to stay within a fixed range compared to all this solar panels are just pretty easy to handle. when you put it on your roof or when you put it on the field or when you put

another lake or wherever you put it, it's just very simple. this is richard, tony who's been researching, concentrated solar power technology and policy for the last decade. it's just sitting there and patrick came and maybe from time to time, but it's not operationally complex as csp where you have mirrors and you need to adjust to, you know, under real environmental conditions. these plans are generally also custom built which makes them expensive. so in order to make them what that they need to be big, which means more challenging to engineer and handle a case of points. this make a project. welcome to the future of power generation, crescent dunes in the us state of nevada and was suppose to revolutionize clean electricity. the cost of all things, $1000000000.00 to build and when it started to run in 2015 expectations were high. and then the problems began never reached its expected everett's outputs, which was supposed to power $75000.00 homes. also because there were lots and lots

of outages due to technical problems, often to do with the molten sold. the plot used to most of so is a paid to work with because if something does go wrong and it drops below it, some, it's melting point because then he doesn't have bolton. so anymore you have started salt, and then your pipes are full of solid sold and this is a big pain to sort out one time the plants have to shut down for 8 months on and another time. but most of the sold thank leaked and the ground good contaminated so the entire tower had to be taken down the pond eventually closed and solar was of the company behind it ceased to operate. they were really, you know, they were really rock'n'roll. busy and silicon valley type of guy, so they were okay, we're going to revolutionize the world and we need to build lots of these towers and they were, you know, move past and break things. and, and turns out for csp that wasn't the right approach, right? because they need to figure stuff out, do operations and maintain and spend the night spent ended it, it takes some time. crescent dunes generates small amounts of electricity again,

but a ton is the image of csp, particularly in the us, which hasn't built another big plant since other mega projects like the idea to build big plants and the so how about the power of europe also fell flat today and all of the world's plants taking together have a generating capacity of 7 gigawatts, for comparison, the $1700.00 gigabytes of photovoltaics solar panels out there. so sees p is never made it big, and it's seen it's fast share of setbacks. but there's one reason why we shouldn't give up on the idea is, and that's the same reason why china has been building many of these in the past years. because that's one thing that affordable takes come to think about federal tax. it really does not generate that night, but it's concentrated solar can. new of plants don't just heat up multiple sold to you straight away. they also have big tanks to store it once it's hot. it only codes by one degree celsius per day in that and can be used to run the turbine at the lights up points like after the sun has gone down. cool. and lots of people are

using lots of electricity all at once. it's important to have these clean sources of energy. we can dispatch around the clock as we pluck more renewables into upgrades, because they only work when the sun shines with the wind blows. having this flexible supply might also justify paying a little more for the future of csp, move to the different nice rates side, and used to be a power technology like wind, mtv. and now it's really very much a storage technology. there of course, other ways to store electricity like lithium ion battery is that now often get billed right next to solar farms. that typically used to shift up to 4 hours worth of energy. you can build big a batteries to cover the night for example, but that will be very expensive. since what the salt is quite cheap, it's more economical to use this for longer periods. it's also possible to use electricity from sol dependents to heat up the molten salts, but that's less efficient than directly using csp to capture the sun seats, at least the sizes with lots of sunshine. c. c has been in the doldrums for about 6

they use because we lost the dice on energy about the realities for the provision of not on the special energy with days of state. nothing. that's the street. this is craig, what's the ceo? a fast company that's working on new designs to fix the problems concentrated solar power him had in the past. we yeah. now system, you know, we have solid family, nice hot, sunny places you end up needing to the fossil fuels. so they're not time energy. they already built a small demonstration plant and eastern australia to prove that technology works. the next step is to build the bigger ones with 8 hours of storage. this report by the us national renewable energy and the board tree. so if that's the manual, it was compiled after the failure of crescent deals and analyzes all the problems. it's and other sees the plants and concepts. and that's, that's really great. cool, because you know it's, you kind of learn from the mistakes of the past and there's not really a huge of the technology. as you can see,

they build several small talus instead of one big one. they say this makes it easier to build and to vary the size of plants without having to come up with custom designs each time, which saves money. also it's liquid sodium, so metal and not molten salts that's circulating through that system. if this becomes solid in case of a shut down, it's easier to melt again. then salts that fast enough, the only ones that took an interest in the csp reports that become the the chinese use bi engineer. come book like that above. what has now changed every thing for it sees p at the moment is that china is, you know, getting into a big, china is re discovery and concentrated solar power around 30 plants and development label than anywhere else. that's because every renewable talked with one people with capacity now must include 10 percent of storage. and the government issued this notice saying it will support the large scale and industrialized development

of solar thermal power. the idea is simple. during the day you use solar p, v to produce cheap electricity and concentrate that sold out. so he talked to storage tanks. then at nights when the sol dependents lie idle, use the stored heat to run you a turbine. so what does this mean for concentrated solar kinds of technology? really state to come back? well, a lot depends on whether the china sold a tile has become a success and, and the sort of a tower spin. have a real possibility of developing economies of scale to, to really figure out how everything works. and then we'll hopefully see the same thing that we saw with p b or with wind, that those supply chain gains from china really enabled or re cheap or better at products that will be available, but also in other countries and in africa potentially in your potentially in the us, but this would also mean those other countries have to see the potential and put

policies in place to support the technology without supports and will be hard for csp to get off the ground again. either way, it would likely never get us because people ones thought it was sold, a sales have one of the technology rates and catch up the mass market. but speed might've fountain unique and it will be exciting to see whether it can phillips the. did you ever heard about this crazy looking solar technology and what do you think about it? let us know on the comments and don't forget to hit subscribe because we have more videos like this for you. every friday we the platform since your speed internet isn't yours,

we're not putting up with this just because you're allowed. we're taking this backward reclaiming the struggle for democracy on to the right, the right wing networks in austria and germany. how is social media radicalize in young people who are just waiting back and ask what's called check talk and politics plugs up next to the w h. o africa, to see the future of culture and production. click 3 of these close with their families and kind of in on ending how to work sustainable. on virtual field, they practice how to deal with test sustainably. good for the you. the code. in 60 minutes on d, w. get ready for an exciting auburn toyota to look surprised. hi,

i'm shopping and i'm ready to dive into the hands of human to you. have you have a one to talk to me before you can respond and the i'm expected side supplies the chip talk has become a political battlefield. i go with this population. my algorithm is the government . the a if these rising to become a minority in our own country, the young people turning to the royce the what's happening on sick till sunset. we live in a dictatorship, they only see 2 parties, the d and the greens. young people just trust the ac.