the the on the long voyage through the ocean. another how well was it costs for a long time, they had to be humans on the journey. now the trenches has become very protective of whales until the results of the ocean conservation start september full. i'm dw cost about why does that, because now i'm lease the new host to

join us for an exciting explanation of everything in between. this is a video and audio production by d w. i hope that you will tune in 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 photovoltaic 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 a rival technology came into play large merits that's can also to in some beams, into electricity by focusing the light from the sun and using it's heat. it would

use the use 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 back then. let's skip to today and it's been almost completely forgot the story behind it. this one of great expectations. your queen consistent and reliable energy. equally big disappointment that present doing this project failed and may be one of revival, because concentrated solar can do one very crucial thing that sold a sales cons. oh, you might've seen a concentrated solar power or csp plants that looks like this before. especially if you're into your hollywood, sy fi the sp times can also look a bit less futuristic like this. but fundamentally, they work the same way. they use a mirror, us to, reflects and concentrate some lights. it's cheap. they could, i mean did that,

should that, that is coming from this, i need to know that this is chubby lotta, who called themselves a c p evangelist. he's a mechanical engineer who's worked on many concentrated, sold up projects around the world. so the consulting, i believe about the $1000.00 times this i'm getting, i'd like to bring in this type of csp plants, that particular point is, would be the top of the tower inside it. there's a fluid, easily molten salt sol, solved. and it's liquid form that gets heated up by the sun's energy. molten sold has been pumped down to a 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 cost, you know, i'm not a small uh, let's say the function. but what club, but we solve the problem. even any function of flipped after that's the sold, has cooled down. so it gets pumped up the tower and the cycle stops. again, and for this process to work properly, 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 built 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 hierarchy and send 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've got pretty cheap and very simple 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 off to this. concentrated solar power also became cheaper. about 102011. 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 on the cheapest solar panels instead. it wasn't so much that solar panels 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. it's. 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 mirror that 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 and 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. so the plot used

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, then you didn't have both. and 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 the sold thank leaked and the ground got 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 and 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 generate small amounts of electricity again, but a ton is the image of the 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 that's one reason why we shouldn't give up on the ideas. and that's the same reason why china has been building many of these in the past. yes. because that's one thing that affordable takes come to the thing 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 salts. it only costs by $1.00 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. but that's 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, are vastly say use because we lost the dice on energy about the realities for the

provision of knots on the special energy with deserts. there's 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 them 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 from energy. they already built a small demonstration plant and eastern australia to prove that technology works. the next step is to be able to pick up one 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 units 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 tablets 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 the system. if this becomes solid in case of a shut down, it's easier to melt again, then salts the boss than not the only ones that took an interest in the csp reports that become the, the chinese use bi engineer. come book like that, a bite of 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 gigawatts 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 solar panels lie idle, you use the stored heat to run your turbine. so what does this mean for concentrated solar kinds of technology really stage of come back? well, a lot depends on whether the china sold a tile has become a success. and a 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 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 as you ever heard about this crazy looking solar technology. and what do you think about it? let us know the comments and don't forget to hit subscribe because we have more videos like this for you. every friday. we the platform isn't your speed internet isn't yours by. we're not putting up with this just because you're loud. we're taking this battling reclaim the struggle for

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