Perovskite Solar PV. FINALLY some good news!

[@LiiMuRi]

As a chemist who has worked on perovskite-structured materials in general, and photovoltaic perovskites a bit too, I'd like to point out some small errors in the video: Perovskite mineral is CaTiO3, but this is not the "perovskite" in PV cells. Those materials are various lead halide materials, which have the same crystal structure as CaTiO3: the perovskite structure. But the chemical composition is completely different, as are the properties. You cannot make solar cells from CaTiO3

[@arnoldvankampen3672]

As I understand it, it is about adding the Perovskite as a layer to absorb more frequencies that somehow are passed on to the underlying normal silicon which absorbs less frequencies on its own. But then, what about the 1 micrometer film? I guess, the film is part of the sandwich that makes up the pv. How do they adhere the film to the silicon substrate? Furthermore, Perovskite here, seems to refer to the structure which is so typical for Perovskite more than to the actual atomic elements in the (perovskitian {?adjective?} structure. Unfortunately, no 1 micometer solar panel then?

[@christophorus9235]

@@arnoldvankampen3672 I believe the thin perovskite layer is transparent but able to collect in the blue and maybe ultraviolet wavelengths. Silicon currently does not collect this energy.

[@danielpicassomunoz2752]

They have lead

[@ThibaultKreutzer]

thanks for pointing that out. I had the same thought.

[@davitdavid7165]

So perovskite does not refer to a chemical, but a shape/ structure that multiple chemicals can take?

[@leftcoaster67]

As a Canadian. I enjoy hearing people are "beavering away".

[@ArmageddonAfterparty]

As a beaver, I enjoy people are away "hearing Canadians".

[@leemason4024]

Beavering?! He said, beavering 🦫 😂. In England I thought it was "rabbiting". I like beavering better I think.

[@moiragoldsmith7052]

​@@leemason4024 I am in England too, my understanding is; ' Rabbiting' means talking incessantly. ' Beavering' means working dilligently.👍

[@lylestavast7652]

Moost interesting observation !

[@skierpage]

As a Canadian, "I believe... that the Beaver is a truly proud and noble animal"! -- Molson's I Am Canadian beer ad, the manifesto of the best part of North America

[@SOMAsolarsystems]

As an installer, I cant wait to see some from the wholesalers as this would mean people in smaller properties could have a system worthwhile and get their bills down. They dont need to be big roofs or even face south. East West splits will work well, I do lots of them and my customers get their investment back with 5 -7 years with plenty of life to make and save a tonne of money.

[@bjb7587]

Yeah. I've seen several estimates for my house over the past five years or so. Can't make it work financially.

[@meganegan5992]

I'd also imagine lighter panels would be appreciated as a general safety and convenience benefit to your employees too.

[@freeheeler09]

Joe, agreed! On a lot of houses, the bit of roof facing south isn’t that big!

[@teekanne15]

@@meganegan5992 i doubt its gonna be lighter as the perovskite is additional to the silicone ones.

[@yrr0r244]

@@teekanne15most of the mass is made of glass, plastic and the aluminum for support structure. The photodiode part weighs very little.

[@stefanweilhartner4415]

the supercool thing is, that the additional efficiency is still there in winter where the loss of energy mostly affects the infrared part of the spectrum. using them vertically on a fence or balcony still gives you a good amount of efficiency in winter. the vertical installation is not perfect in summer but it is a better balance throughout the whole year for people who live a few thousand kilometer away from the equator. and together with a sodium ion battery, you get a quite affordable setup to produce cheap energy everywhere all year. btw.: the University of Bayreuth pushed sodium ion batteries to 165Wh/kg which is fantastic!!! the future of renewables is bright!!!

[@SeekingBeautifulDesign]

And panel temperature is often forgotten. Efficiency drops at T rises, but as T falls efficiency rises. I just had a 100W panel at peak winter sun, northern latitude, ideal alignment and on a clear day at subfreezing temperatures generate 110W while on a normal sunny summer day, you never get above 90W.

[@jedics1]

I didnt know this, do you have any numbers on its potential extra gains in winter? Current panels are already efficient enough in summer where even my small system makes way more power than I can use but the worst 3 months of winter are a real struggle so even a 10% gain would make a difference.

[@PazLeBon]

obvioulsy not possible fromn he sun directly, therefore must be snow r frost that reflects. therefore surrounding the floor with mylar or similkar woul do he same job and your panels not get wrecked vertically haha

[@danilooliveira6580]

that is a very good point, I didn't think about it this way. since visible and ultra-violet light get scattered by the atmosphere, a visible/blue light solar panel will be more efficient when not in direct sunlight than a normal solar panel. I imagine it would also make perovskite bifacial solar panels a lot more interesting for the same reason.

[@beatreuteler]

@@jedics1 You can't expect any extra gains as the time you can expose a panel to the mentioned performance is typically very short.

[@Yanquetino]

🎶 Sunshine on my rooftop makes me happy Sunshine in my car can make me smile Sunshine in my household is so lovely Sunshine almost always makes me high 🎵 (Apologies to John Denver)

[@johnsee7269]

Listening to him and this guy changes gloom and doom to positivity! That's good! "Coming home to a place I've never been before!" Marvelous!

[@Verklunkenzwiebel]

The Danny Kaye version.. soo funny

[@edbail4399]

Depending on petrol makes me crash.

[@divyajnana]

Think John would have loved it. Thanks@@edbail4399

[@sb6489]

I think you would like the song "Faces to the Sun" by Mango Grove.

[@David_Poole]

I've been really enjoying this series. Thank you for going back into these old video topics to review what has happened. I feel like more often than not big headlines get published on a new idea and then it disappears into the void. Seeing where these technologies are at after the headlines have come and gone is very helpful

[@JustHaveaThink]

Cheers. Glad you like them!

[@ravenx447]

As always a clean concise informative and entertaining presentation, in my book one of the Top KZbin presenters currently on the planet 👊🏻

[@Mtnsunshine]

As a person who founded her own solar installation business for remote homes 27 years ago, I have seen many wonderful improvements in the hardware necessary to get electricity to these off-grid homes. This is yet another good improvement that should benefit people well into the future. 👍 Thanks for the update.

[@nomadMik]

I know somebody like that… you're not in San Luis Obispo, are you?

[@cathyhaynes2903]

As a homeowner living under gray Seattle skies and next to huge, shadow making evergreen trees, I'm looking forward to solar power that makes financial sense for me.

[@Mtnsunshine]

@@nomadMik Hi. NomadMik. No, I’m in Colorado. 🌞

[@beatreuteler]

@@cathyhaynes2903 maybe on the south side of the trees?

[@cathyhaynes2903]

That would be my neighbors roof. Not sure he'd go for that!

[@georgeorwell7291]

I have to say I love your follow ups.... its easy to just take some lab article and think "here is the breakthrough", but we learned from Tesla.... prototypes are easy, production is hard. Thank you for following up the most probable candidates...

[@stefanweilhartner4415]

production with perovskite is also easy and cheap. but we don't have a breakthrough that is still missing. it is longevity of the perovskite layer. this still needs to be solved.

[@JustHaveaThink]

Thank you. Glad you enjoyed it :-)

[@beatreuteler]

@@stefanweilhartner4415 In fact this is to be solved prior to mass production! That's why production is hard.

[@confusedofhinckley5294]

Twelve years ago, I was planning to put 4kW of solar panels on the roof of my UK house, not just to save the planet, but to make the most out of the government's hopelessly overgenerous (at the time) Feed In Tarif. However, I was a bit worried what adding these panels might do to the value of my house. So, I asked a few estate agents whether such an installation might add, or detract value. And they all said..... "What are solar panels?" (!!!) I'd like to think we've moved on a bit.

[@broadsword6650]

My late father had a similar experience in the 1960s when trying to install loft insulation. He contacted all kinds of builders' merchants, hardware stores and the few DIY shops around at the time, and the overwhelming response was "what's loft insulation?". Always seems like "the industry" is well behind burgeoning consumer demand.

[@jeffreyquinn3820]

@@broadsword6650 I think it was just getting established here in Canada around that time. My parent's house had a whopping R6 or R7 in the attic.

[@kruegdude]

Came for thoughts on solar PV, left with a previously unheard and wonderful new phrase “beavering away”. Thanks for all you do.

[@longline]

Very industrious animals, beavers

[@rogerphelps9939]

Very common here in the UK.

[@EleanorPeterson]

​@@rogerphelps9939- Yes indeed. 'As busy as a beaver...'

[@NelsonBrown]

PV researchers are beavering away while "comfortable and rather complacent representatives of the fossil fuel industry" were cocking around.

[@Neilhuny]

I'm genuinely surprised it isn't in common use all over the English speaking world. We live and learn. I suspect there may be a problem using it with the association with the slang use of 'beaver'. Many British people have already changed their pronunciation of 'Uranus' in my lifetime because of American sensibilities. And 'pecan' is pronounced differently for broadly similar reasons. If we can influence you: please, never, ever say you have a fanny pack

[@martincotterill823]

Cheers Dave! A tonic for my soul to hear some good news in these dark times. Keep up the good work!

[@winrampen1174]

Dave, I'm pleased you took the time to come back to this. One metric that is super important is how much energy and water is required to make a solar cell. I've read somewhere that Perovskite cells require something like two orders of magnitude less energy to produce per watt of generating capacity. That means that the amount of time a solar cell has to operate before it digs itself out of the energy hole created by its manufacture is significantly less.

[@skierpage]

It's not super important, since the payback time for the energy invested is down to a couple of years. The EROEI objection was valid... 20 years ago.

[@danilooliveira6580]

@@skierpage if the panel was made from scratch, if it was recycled its even shorter.

[@Muppetkeeper]

Water is absolutely a key metric, these days, energy not so much. In China (and no doubt elsewhere) there are solar panel factories more or less being powered by solar panels. As that percentage of powered used coming from solar increases, the power demand becomes less of an issue.

[@beatreuteler]

@@Muppetkeeper That is correct, and the same is valid for those factories (and they are growing) that use closed loop water cycles for their production needs.

[@Wishkeyn]

Even if that's the case, this is a multi-junction cell, which means the silicon part of the cell are gonna be comparable to others. However if the 28% number is correct, you do get another 4-7% (~15-25% increase) with little extra water usage.

[@Kevin_Street]

Thank you for this video! This is one of the subjects you've previously covered where a follow-up is probably most valuable, because perovskites have such enormous potential. So the short answer to "Where are they now?" is that Oxford PV has made good progress on perovskite solar cells, and is on the verge of selling the first commercial product. Cubic PV is a few years behind them with lots of innovative new ideas and plenty of funding, but no factory built just yet. And behind them are researchers in different countries with their own innovations, but so far none have gotten outside of the lab. Well, here's hoping Oxford PV is a big success! Hopefully they'll pioneer this new technology, maybe with Cubic PV as their biggest competitor, making it both commercially successful and increasingly efficient. And then we'll reach the point where solar energy is so cheap and efficient it's just the natural choice for everyone. No warnings about the fate of the planet required: self interest and simple economics will drive adoption.

[@beatreuteler]

Yes!

[@willxin4517]

It is hard to always be cheer leading these folks involved with renewables and the new energy economy. But on the other hand we have a lot of just wait and see. This looks promising. It would be great if it all works out. Just to note what you said, solar/wind/storage IS the cheapest way to provide power in history. We don’t need to wait and see, we just need a lot of folks to get out of the way. And let folks get it done.

[@EdSurridge]

Subsidies is what works

[@sammason2300]

Storage how?

[@tomheeks2830]

@@EdSurridge We're past that point aren't we? Governments should be putting all their resources behind this research.

[@NeblogaiLT]

I expect this to be a near sure thing, as the largest solar panel manufacturers in their slides are already putting only 1 more generation of efficiency improvements to pure silicon cells, and then perovskites from then on.

[@danilooliveira6580]

it bothers me because most of these amazing technologies are fruit of capitalism and are behind patents, what slows progress. if everyone had access to each other's technologies and discoveries we could be much farther ahead, but they won't share because it may hurt their future profits. its the same bullshit as the covid vaccines. we were supposed to be working together.

[@danburnes722]

The added efficiency is really a big deal considering limited roof space for many home owners in the city. Excited to see the progress and new products coming out.

[@beatreuteler]

Not only the limited roof and facade space is a key here, but the economics of fully installed PVP's: The cost of 1 installed panel is approximately the same while power harvested is increased!

[@jasenanderson8534]

Great efforts all round and we eagerly await the commercial production of these and the cheaper tech solutions for solar for people who need it. The future's so bright, I gotta wear shades!

[@artisanelectrics]

Great video! Can't wait to start installing these!

[@SeeNickView]

Wonderful video Dave. As someone in Solar PV, I'm eager to see Perovskite penetrate the market in the same way bifacial technology has in the last 5 or so years. With perovskite and bifacial modules, we definitely might be looking at 35% well before 2030.

[@DanteVelasquez]

Here's hoping!

[@JustHaveaThink]

Fingers crossed :-)

[@rfree863]

we dont need toxic lewd solar panels. really bad idea.

[@KiwiTim]

Thanks for the update Dave, keeping us on top of renewable tech developments as always, much appreciated ❤

[@JosephJackson-uf1iw]

Great video as usual. The increase in efficiency from 22% to 33% sounds great but I haven't seen anyone mention the fact that is a whopping great 50% increase in power output. My 5kWp array in Spain produces around 35 kWh per day in the summer months (more than my needs) but only around 12 to 15 kWh in the winter. That 50% increase in the winter would be a real bonus.

[@Ev3ntHorizon]

Your channel is so very entertaining. And of course informative. Greetings from the Antipodes.

[@SeekingBeautifulDesign]

There is another approach to further improve efficiency: With current silicon is it is cheaper to buy extra panels than to use solar tracking. But, as the kWh per panel increases with perovskite layering, presumably cost/kWh will drop while cost/panel will rise. That sets the stage for tracking technology to become economically viable in general. (It is viable in the small set of edge cases where you need a certain amount of power, but have a limited space for panels.)

[@wombatillo]

I think efficiency is a bit of a non-issue assuming panels became still an order of magnitude cheaper. 10% efficiency is totally fine if the panels or film sheets cost tens of dollars. Most places are not efficiency limited in any way. What's more important in many higher latitudes is having enough extra panels to be able to make dual-sided west-east farms or have separate panel groups heading east, south and west and be completely ok with some of the panels producing next to nothing for 2/3 of the day time. Winter production also practically needs vertical panels which are not that great during the summer. If they're cheap enough so you can build a summer set and a winter set it won't matter much. Panels need to be so cheap that we can extend the morning and evening curves as far as possible. The mid-day production peak will soon be an actual problem because there is nowhere to dump the negatively priced electricity.

[@markumbers5362]

I like people like you that tumble the numbers and find new viable economic tipping points. Well done. I was mucking around with the idea of using my solar system to replace gasoline rather than grid electricity the other day and found that powering a car ( EV) saved me 4 times more money in gas than using to replace grid electricity. I then went a little further and thought what if I cover the entire 150 sq metre roof of my 4 bedroom home with panels and came up with this. It would cost $40k (Australian) and generate enough to power 14 EVs each travelling 400 klms each week for 20 years. The weekly solar cost of each EV would be $3.00. The cost was mind blowing enough but what really astounded me was that just one residential roof top could power 14 cars.

[@SeekingBeautifulDesign]

@@wombatillo I'm hoping the point of the video was that because of the efficiency gains, the overall cost per kwh would come down...so would maybe drop prices another 33% (assuming same manufacturing costs). The cheaper the cost/kwh, the more we can overproduce on peak and supplement shoulder periods. I like your optimism, but the video pointed out I think that we've hit the limit on solar panel frames. I hope we have another order of magnitude of price reductions on the silicon, but it's pretty far along the S curve now. Of course another halving of solar electricity is great if combined with perovskite or other multi layer technology, but 10x reduction...already costs to install on roofs is becoming the biggest issue. I hope you're right.

[@NeblogaiLT]

Things will likely go the opposite way. It is expected from perovskite solar panels to be extremely cheap, as they basically can be a film, instead of silicon+glass construction. So after the initial higher prices (where customers with limited roof area will want to pay more for the new tech with higher efficiency), the cost of silicon+perovskite sandwich should become similar to silicon-only designs as solar panel manufacturing transitions to it. And there may also be competition from extremely cheap (at a cost of much lower efficiency and product life) perovskite-only adhesive solar film products or similar.

[@SeekingBeautifulDesign]

@@markumbers5362 Australia and China may be the poster children for nation scale solar. Adelaide is always setting records for most days running entirely on solar/wind and batteries. And with heat in the north, solar output lines sort of well with air conditioning needs...(although everyone turning on AC after work is a bit of an issue...hence batteries...but batteries in EVs...better charge at work ;) I hope work charging accelerates).

[@daphnescombine]

Thank you. Always enjoy your videos.

[@dprcontracting6299]

Nice one Dave. I come here for the information but know you'll give me at least one laugh per vid. Keep up the good work.

[@PeaceChanel]

Thank You for supporting Solar and for All that you are doing for our Planet Earth.... Peace.. Shalom.. Salam.. Namaste 🙏🏻 😊 🌈 ✌ ☮ ❤

[@snowstrobe]

Excellent research as per... Nature does seem to enjoy a laugh at our continued insistence on living linearly within her circular systems.

[@SuzanneSTPIERRE]

As a kid I read Mother Earth news and picked up books in the library on solar power- build it yourself stuff and all. As soon as I was old enough I started looking for ways to live cheaply and now as an adult I am off grid and have talked my brother into the life as well. I saw a couple comments on the expense for some, and I want to point out that if you learn a little more and do it all yourself, it's not going to be very expensive at all!

[@thedevereauxbunch]

One of the few great sources of information whose voice I can stand listening to. Love you don’t shy away from being real

[@mikemellor759]

Thank you for, as ever, giving the thumb nail overview of these technical developments. 😊👏👏

[@drillerdev4624]

I heard several mentions about breakthroughs in perovskites, but here is the a lifespan of 25 years was first mentioned. I was sincerely not expecting that much

[@johnsee7269]

Your concise, insightful analysis always gives me hope for mankind's future no matter how bleak it seems to be at times... Thank you! 😮😢😊

[@JustHaveaThink]

You're very welcome. Thanks for your feedback :-)

[@samedwards6683]

Thanks so much for creating and sharing this informative and timely video. Great job. Keep it up. I have been following the progress in Perovskite cells for years. To me, the holy grail is an inexpensive mylar (or similar) covered solar cell wrap that you can then use to wrap your house, roof, car, light poles, etc. Having solar cell covered walls / picket fences / etc. would be amazing. I am now reading about laboratory samples of clear glass (equivalent) solar cells. Imagine replacing building windows with such glass (in 2035?). I hope that most of this stuff is salt water proof as they are all arriving or will be arriving too late to help us meet the 1.5C deadline.... Exciting but: Sadness....

[@mauroscimone8584]

Yeahhhh finally!! 😍 i was following this tech for years, and now seems there are companies ready for production! Also 3Sun with Enel in Catania, Italy, also claim they are quite ready for Tandem Si/Perovskite cells!

[@RiDu-p4m]

Well, perovskite photovoltaic panels are already in early stages of deployment by Saule Technologies: kzbin.info/www/bejne/rJK7pIyHqrSAj9U

[@zelbinian]

What excites me most about perovskite tech is the potential for automotive/transit. Currently Aptera is the only car company that can make solar charging worth it because of their insistence on extreme efficiency. If more cars could reliably recharge just from the sun then who needs charging networks!

[@CurtisCarlson-lm8ox]

Thanks!

[@JustHaveaThink]

Thanks for your support. Much appreciated :-)

[@mattesla]

Super interesting news big supporter of PV have had them on every house I've owned so far

[@Praisethesunson]

The answer to our problems is shown to us everyday. We just need to harness the energy provided to us by the best nuclear fusion reactor in the solar system. PRAISE THE SUN!

[@bjb7587]

IT'S A HELIOCENTRIC WORLD!

[@NoAlbatross]

Good update on the tech. Ty!

[@christianfaust5141]

Danke!

[@JustHaveaThink]

Thanks for your support :-)

[@youxkio]

Good job, Dave. I remember doing research about solar back in 2020 and finding the "ix-junction III-V solar cells with 47.1% conversion efficiency under 143 Suns concentration" research paper.

[@orpheuscreativeco9236]

Hi Dave, You may already be aware, but have you heard about fluorescing light guides? 🤔 Robert-Murray Smith talks about them and gives some demonstration here on KZbin. The efficiency increase from this simple modification is astounding. It's more approachable for the everyday citizen of Earth, as well. Though I could imagine an even greater increase in energy capture once coupled with perovskite technology. 🧐 Great video 👍 Thanks for keeping us updated and in-the-know. I appreciate what you do for us here on the interwebs ✌️✨

[@mikevincent8728]

Very informative and, dare I say it, slightly encouraging! Thanks Dave

[@stunningsalman]

I am from Pakistan. Your videos are really interesting and I love to watch your videos.

[@MrArdytube]

Through the wonders of youtube…. I came to this video immediately after watching a video about why the solar industry is collapsing. I have no bias either way… but that video did raise some salient points, The Dramatic increase of interest financing rates, the extended costs of many low ball priced installers, the fact that what we knew as net metering is going away…. Being replaced by 4x1…. Where you have to give 4 units to the power company in order to earn a one unit power credit… and the fact that this new arrangement makes battery back ups more desirable…. Along with a higher cost

[@ariadgaia5932]

I REEEEAAAALLY love your videos and how there aren't any ads! Thank you!!

[@shawnr771]

Thank you for the commentary. Sometimes perfection gets in the way of good enough.

[@JustHaveaThink]

Couldn't agree more!

[@shawnr771]

@@JustHaveaThink I still want people to try for better but get something to market. Even if it is only test markets. Let us see how these differing applications fair in actual use. We will have successes and failures. Learn from all of them.

[@world_still_spins]

Unless your name is John B Goodenough. Perfection would never get in his way.

[@4203105]

@@world_still_spins I mean currently 6 fett of dirt are getting in his way, so perfection is the least of his problems.

[@cameronf3343]

As an aspiring off-gridder I’m almost too excited for these!! I’m saving up to buy land and build a home, by the time I’m there these should be super distributed and hopefully much lower cost.. Perovskites solar and Sodium Ion home batteries are definitely what I’m most looking forward to for the coming years

[@Nsund]

I'm a long time fan of perovskite and it's so pleasing to learn they've managed to reach sufficient longevity. Looking forward to the first perovskite car paint 😀

[@markbernier8434]

Real game changer for me is PV roll stock. Something that you can just alligator clip to the top and bottom and the more you unroll the higher the amperage. 1/2m for your phone, 2m for some lighting etc.

[@PETERJOHN101]

Somewhere I read that PV window film in a skyscraper would generate all the power needed for lighting, same obviously for homes.

[@ForTheBirbs]

Thanks for another great video. Sounds rather promising with Oxford. Cheers

[@peterchandler8505]

my exact thoughts!

[@JustHaveaThink]

Cheers. I hope so :-)

[@mosfet500]

Thanks Dave!

[@critiqueofthegothgf]

the TLDR segment is pure gold mate

[@sb6489]

It will be interesting to see how perovskite on perovskite works out - potentially cheaper than silicon for both (or more than 2) bandgaps. (Acknowledging that, by "perovskite" we mean perovskite-like materials.)

[@beatreuteler]

This would imply you have 2 different Perovskites that have this much different bandgap. Not sure if that comes any time soon.

[@dm1045]

I saw a video recently about a UK study on vertically oriented solar panels that produce better than st standard orientation. It might be a good topic to look into. As always enjoy your programs and look forward to watching every Sunday night!

[@dogdooish]

I certainly would NOT have laughed at you!!!! I had had solar running my house except the fridge and hot water in 1991!!! I used to tell people that it was the way to go, even demonstrated water pumping from a single 40watt panel to a farmer, he thought it was just a "Gadget" Now his whole farm runs on the Sun!!

[@napierpaxman]

I work just across the road from Oxford Solar PV - hello from First Light Fusion! :D

[@snorttroll4379]

Got some insode info for us? And how soes one succeed with a venture?

[@chrislecky710]

The efficiency of solar panels is also intrinsically tied into their ability to be recycled. If they’re easily recycled and the infrastructure that exists to do so is readily available it makes using them in larger quantities and for more applications far more viable! I’m glad the technology is being pushed further and I look forward to seeing what is possible in future.

[@truhartwood3170]

⬆️ efficiency + ⬆️ longevity + ⬇️ cost + ⬇️ weight = ⬆️ practical applications. It starts making sense to shoehorn in solar anywhere and everywhere, including areas that don't get great sun exposure or have perfect exposure angles or where weight is an issue or it's barely worth it with today's solar panels, eg tops of cars (so many people think this is an obvious idea, but for the added cost and complexity it barely adds a few miles of range per day - the equivalent of plugging in for a minute or two... assuming you've left your car in full sun all day. But if it's cheaper than paint, then it certainly makes sense!).

[@harveytheparaglidingchaser7039]

Perovskite has a ring to it. Great episode

[@pierrelecaillou6966]

Dear friend, thanks for an excellent and comprehensive presentation. Today I learned. Oh, and greetings from New Mexico🙂

[@joweb1320]

Thank you.

[@Luddite-vd2ts]

Thank you, as always. Other ways of increasing the efficiency of solar production? Vertical mountings Cooling solar panels in extreme temperatures Agrovoltaics

[@andym4695]

Heh. When I was a kid back in the '70s, I had a toy truck powered by a solar cell. It was one of the polycrystaline ones, with the silicon grains the size of your fingernail. It propelled the truck at a crawl, and I hesitate to imagine how much a megawatt of them would have cost. As a side note, many perovskites can be made to have catalytic properties.

[@Aussiemoo]

Funnily enough, at the micro-scale is where something like this would really help. Electronics with ultra-light super efficient solar panels would enable distributed sensors in a way not currently possible. This could help farmers target irrigation to drier parts of their fields, alert logistics companies to the location of equipment like trailers and dollies, amongst other things.

[@emceeboogieboots1608]

What are they used to catalyse?

[@beatreuteler]

Dear Matt. With the impressive down slope of PV cell cost and prices, it leaves a lot of people and possible investors somehow disappointed as the full cost for any installed base per KWp haven't been following this curve. I think I have identified one of the main causes of this discrepancy in the fact a dominant cost factor is actually installation (labor) and installation materials (structures) rather than the actual panel price. Going a few more steps on this line of thinking I tend to agree with your statement in the video that increasing panel efficiency by a significant degree is the only way to make things better, provided reliability and durability is not negatively impacted. While installation labor per panel more or less stays the same, this way the expected power harvest per installation labor, tooling and materials invested is increasing. With only the cost dropping further on panels the same efficiency as today, all a potential investor can do is invest in more panels for the same money, hence increasing installation labor and structure needs. Conclusion: Coming out with tandem cells at a similar reliability and durability with only a small price premium over current state of the art PV will secure a very rapid acceptance of such product in the market.

[@petrosros]

Washing lines are pretty good at drying your clothes and very simple to construct, it's Feb 12 in England today, that is winter for those that do not know, and I will have dried three fall machine loads since Sunday. It helps if it's not raining, but nothing is perfect, and you just need to keep an eye on the weather. Oh, and if you are interested, that is in North London.

[@wordmunger]

That's pretty impressive. If a typical solar panel today has an efficiency of around 21-22 percent, that suggests we can have a 50% improvement with Perovskite. So you can either use 30% fewer panels to power your home, or use the same number of panels but be able to continue generating significant power even during the lean winter months.

[@BitBert]

Thank you very much for those intelligent and informed subjets that are of the most importance for our survival as a species! Merci et continuez le bon travail...

[@danwylie-sears1134]

For others who didn't recognize it either: Bob Monkhouse - 'People used to laugh at me when I said I wanted to be a comedian. Well they're not laughing now.'.

[@garypippenger202]

I am encouraged to learn of multiple ventures employing people who are working so hard to bring us solutions to our energy issues and the challenges of getting past burning things to make our civilization possible. If we can somehow survive the next 30 years, then the solutions will be only 30 years away. 😁 Perhaps our grandchildren will experience these breakthroughs. Thanks again, Dave!

[@veronicathecow]

Nice video as always, many thanks

[@JustHaveaThink]

Thanks Veronica. Glad you enjoyed it :-)

[@TennesseeJed]

Nature sure has a sense of humor.

[@id10t98]

Getting older isnt the best part of it however.

[@danilooliveira6580]

its been fucking with us since we invented science.

[@chuckkottke]

An excellent top notch synopsis Dave, thank you! 🎉😊🌅. Cambridge seems to have hit the mark 🎯 ahead of the competition. My thoughts are ancient by comparison; I just wondered why someone hasn't simply developed a layer to convert the UV and visible spectrum light into what the traditional silicon photovoltaic cell wants, which is red light to infrared. Kind of a florescent layer that can convert sunlight to the food that the cells want.

[@alfredspijkerman]

Great video. In my point of view the higher power output per square meter is much more relevant than the cost reduction. This increased power brings applications such as (partially) solar powered boats and cars closer. Here, you will simply want more power to propel your vehicle as you can’t expand the surface area anymore. For example if previously 50% was powered by solar, you could now power 75% by solar which doubles your range on batteries.

[@datman6266]

I hope they transform my house, as well as the market. Now for the real roadblock for home solar.. the battery! These updates are very good. To know that some of the claims actually will come true in the near future.

[@Anyreck]

This is very exciting, I hope the durability of these products is for real, and the pricing is competitive too.

[@terrytytula]

Excellent video as always, could you look into a solar panel coating out of England and do an update on it. The coating apparently allows the wave length of light the panel needs to pass through it. Now here's the clever part, it absorbs the rest of the light spectrum blue etc. and re-emits it as infrared energy the panel can use. This raises the overall efficiency of the panel.

[@ksairman]

Well done, it looks like we are all looking at a good 40% additional increase in efficiency.

[@richriley5832]

Great video! In terms of ways to improve a solar panel, how about using all that extra energy they capture in the form of heat for something useful like heating house. Right now that triples the price of a panel. Ought to be able to improve on that.

[@LTVoyager]

Just remember to multiply the time to market estimates by the appropriate reality factor. These values are: 3 for scientists 5 for management 10 for marketing

[@lm1367]

Thank you so much for your great work!!

[@terrystephens1102]

Another excellent presentation, thanks. 😁👌👌👌❤️❤️

[@RWBHere]

Thanks Dave. Let's wait to see who is in full-scale production of these 30%+ efficiency panels.

[@davidboyle1902]

With all of the these, the problem that first comes to my mind is hail. Here in the Midwest hail is a not at all uncommon occurrence, and I have no trouble at all envisioning a one hour storm wiping out however many solar arrays you have on your roof. So before I’d entertain solar I’d need to see how well they handle 1”+ diameter ice balls. Nice vid btw.

[@sephiroth127]

If we get to 35% efficiency, it might start making sense to install PVs on EVs and get almost 2kW on sunny days, being able to recharge ~10 km/h.

[@leemason4024]

Thanks for another great video

[@JustHaveaThink]

Glad you enjoyed it :-)

[@williamjmansfield8768]

Just like money at compound interest, incremental improvement over the long haul amounts to significant gain!

[@matthewtalbot-paine7977]

It's very good to make the solar panels more efficient as long as that eventually comes with a cost reduction overall. Like obviously you can get more solar from the same area if they are higher efficiency so if you are limited on space that's very useful especially in residential use but for business if you have a field that you are allowed to put solar panels then your choice between high and low efficiency will come down to whether the cost of land available for that purchase against the cost of difference between the 2 types. If however the new solar panels are cheaper than the old ones per watt output then you'll never see an old one be manufactured again.

[@fiddlerJohn]

Love your videos. Great info. thanks.

[@JustHaveaThink]

Glad you enjoy them :-)

[@johanschoeman869]

Great and informative video. Well done.

[@survivalinthezombieapocaly2142]

Sure! It's really cool! See also: Solar power plant mounted in multi-storey building! (for survivors in the zombie apocalypse): Shorts version: kzbin.info/www/bejne/oWqkmpx5gaZ_iKM Full version: kzbin.info/www/bejne/qYDWnJ2FqNFgmaM

[@perobaotic8098]

Hy ! I looked at one of the pictures in the production. I got an idea. The main problem is the space used for the PV´s. PV-Peroscites combineing is one option. PV´s need a lot of sunlight ´ish options. I would work on the reflecting side . Using PV´s on top of each other , by reflecting the light from the sides. The reflecting medium need s to be researched ! The recycling of both the Pv´s and the reflective medium needs to be researched as well. If the longlivety is not good. Exchange the setup in an easy way could be a better solution. Well . I just had a thought. Stay healthy ! Thanks !

[@davidkendall2272]

Tony Seba fan and he has been spot on relative to disruptive technology adoption for electric transport and renewable energy!

[@mcln2]

Nice animation! Glad you hire someone to help you

[@k.c.sunshine1934]

I am an Albertan. We have a moratorium on solar and wind; there is fear that our electric system will become unstable because of the intermittent supply. I suggest that with solar, wind, that the government should encourage technology to allow individuals to store and release energy to provide for the needs of the grid as determined by the system operator. For example, the system operator could electronically call-out for release of electric vehicle battery energy into the grid when there is a risk of network instability. I think that forward-looking people in society would be happy to help stabilise the electric grid and get a discount on their electric bill at the same time.

[@skierpage]

Alberta's conservative government has fear that the fossil fuel era encouraging the disgusting pollution and emissions from filthy wasteful oil production from its tar sands is coming to an end. "Grid instability" is nonsense fear-mongering; the job of the grid is to balance different electrical generation sources and demands, and having new cheap electrical generation that operates at almost zero marginal cost is obviously a win, even if it's intermittent.

[@k.c.sunshine1934]

@@skierpageI respectfully disagree. The part that I agree about is that the government is playing politics so that it can delay the rapid change in CO2 emissions that the world needs. As a retired electrical engineer, I recognise that it is true that "grid instability" is a reality. I am also sure that there are practical solutions to be developed and encouraged by the government. We need a government that will encourage and incentivize innovative solutions of various kinds rather than put road-blocks to change. The only (laughable) attempt that the Alberta government is know for is "Carbon Capture and Storage." In other words, they have incentivized the continuing use of oil and gas and potentially ignored solutions to the grid stability issue.

[@Anopheles6]

@@skierpage. It’s not nonsense at all. Look up “duck back curve”. It’s a real problem and getting worse. A thermal, combined cycle plant takes half a day to a day to wind production up and down. Yes you can plan ahead, but it can’t respond to hourly variations, say intermittent cloud cover. Do you want your power going off randomly? All the time? If you want to know what that’s like, look up South Africa. They have a power shortage and have daily blackouts. (Most scheduled)

[@fasteddiegr]

The biggest advantage of increased efficiency will be the possibility of smaller instalations enabling its use in towns on apartment buildings or smaller houses where today it just won't work.

[@chrisfox5525]

There’s some new Dutch research that suggests the angle of solar panels is all wrong, would be good to hear your interpretation of that. Keep up the good work 👍

[@freds4703]

Excellent presentation. Thank you.

[@happyzahn8031]

They are still very expensive. About $20-30K for a house in the US. Its about a 15 year payback. which is pretty much break even if their life is 20 years and something happens like squirrels. Hopefully, things will get to where regular people can put them on their houses.

[@longline]

"It's nature's way of havin' a bit of a laff with us"

[@justinw1765]

But really it is "at" methinks.

[@JohnLingenfelder]

Just a couple of comments on my own experience as a Texan and as a 5.4 watt residential solar user. 1. 10 yrs have produced 80,000 kWhr of energy from 22 panels. 👌 2. Didn't realize that having the tilt of the roof at the best angle to catch sunlight just right is important. 3. AND... having that roof facing 180° due south was the best for maximizing energy generation. BUT.. living in Texas is detrimental to any desire to get off from dirty fossil fuels. EV cars have extra and excessive annual taxes. Financial firms cannot bid on government bonds if they invest in green energy, reducing pool of bidders (=higher interest rates), and many more anti-green laws every year. 😢