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@existentialcrisisactor

2 жыл бұрын

I helped a man build and install his in Atzec, NM. It's on Mountain View Drive. We did that back in '04 or close to it

@johndoh5182

2 жыл бұрын

I'll tell you why we don't have solar powered cars. Elon Musk said it's stupid. No really I forget exactly what he said, but from an engineering perspective, if you want to have a regular sedan or SUV, the amount of power generation is trivial, most people don't leave their vehicles out in the scorching sun in the summer, the best time to get power into the vehicle, and it presents engineering challenges that adds complexity and cost, so I imagine Elon's comment was based on a cost analysis he probably worked out in his head one morning over a cup of coffee and decided it wasn't worth Tesla doing it. The cost it would add to the vehicle isn't worth the amount of power you would get from it, or is so trivial that the added cost would have one main effect, which is deterring people from buying the vehicle.

@Didier88600

2 жыл бұрын

I want to sleep at night and the vibrations-noises of a wind turbine is a bad idea.

@courtney3330

2 жыл бұрын

Car manufacturers I guess feel cars with wind turbines will not help just like solar...I still think it's in the future and should be explored

@SirWhiskersThe3rd

2 жыл бұрын

could you do a video on the benefits of Aerogel as insulation to cut down on cost heating and cooling bills?

I have a turbine on my off-grid property that complements the solar nicely. It cost me very little to install and zero maintenance cost since I did the install myself and perform the almost non existent maintenance once a year myself as well. My turbine is 1800 watts and can outperform the solar during bad weather producing as much as a kilowatt/hour of electricity on those days, witch may not sound like much but when you are off-grid it can make all the difference. The cost of the turbine was less than $1000 plus the cost of the tower and the charge controller/diversion load. The charge controller I use is about $600 and I built the diversion load myself for under $500. I constructed the tower myself and I'm not totally sure on the cost of it, but it was one of the smaller costs. There is also wire and hardware of course. Once constructed the turbine system costs me nothing more than the solar array to maintain, although eventually I will have to replace bearings but I have them on hand and they were cheap. You just need to be willing to do everything yourself. I am planning to do a video on my install this spring to post on my channel.

@paulogden7417

2 жыл бұрын

Off grid is the key here. For on grid apps where there is net metering, you want the most production for the dollar, and that’s solar. A friend who is a talented electrical engineer equipped his home with wind and solar about 12 years ago. The solar system is still producing, the wind system never produced significant power and is now a curiosity in his yard.

@reithencurtis8558

2 жыл бұрын

I'd like to see a video

@Blueinfinity7

2 жыл бұрын

I'd love to see that video!

@simonrock9348

2 жыл бұрын

We run turbine on the boat, great for cloudy days or at night when the solar doesn't work.

@danielvivian3282

2 жыл бұрын

How large is the tower and how do you lower and raise it for maintenance?

I've been a consultant on wind and solar for ten years. Wind is not practical for 99 pct of homeowners due to the steady high winds needed to make small turbines economic. Wind makes sense at utililty scale, but at homeowner scale it's a niche application, used only in very windy places or as a supplemental source for long winter months with no sun. So basically your video is correct!

@SaveMoneySavethePlanet

2 жыл бұрын

Nice! Always great when you see validation from someone actually in industry! Have you seen any of the newer micro solutions in practice yet? I’m curious how they’ll perform in the real world over several years, but I don’t think they’ve gotten to the point that they can provide that data yet.

@shadyislandchronicles4237

2 жыл бұрын

@@SaveMoneySavethePlanet the three bladed horizontal axis turbine is the most efficient design by far. There are alternate designs that address issues like noise, bird strikes, low wind generation, but their efficiencies are all worse than the standard design. it's all about life cycle cost per kwhr. in your local wind regime, at your operating height AGL.

@Jokerwolf666

2 жыл бұрын

@@shadyislandchronicles4237 I hear good things about verticle turbines as well. Though if you have constant running water on your property a small hydro generaror is better than both wind and solar.

@cameronf3343

2 жыл бұрын

What do you think of Semtive’s? A cousin of mine’s had great success with their’s but they also live on the unblocked very top of a large hill that’s arguably a small mountain in town. I’m curious about it in more erratic places.

@shadyislandchronicles4237

2 жыл бұрын

@@Jokerwolf666 agreed about hydro. but you need at least a few meters of head. small vertical axis wind turbines have some advantages, but efficiency is not one of them.

I have a PIKA T701 1.7 kW wind generator from Maine that helps power my off-grid home. It’s been super efficient and reliable for over 5 years. Unfortunately GENERAC generator company bought the PIKA company and discontinued the wind generator line…but continued the battery and inverter line with their name on it. My machine is on the top of a ridge and uses a 30’ tilting tower. I sure hope someone picks up the rights to produce this beautiful-quiet-efficient machine. My system is a “hybrid” solar wind system and is 100% off grid. Winter brings helpful night and daytime wind generation. I’ve been a sustainable energy engineer for over 40 years…and will never be On-Grid. Good review!

Thanks for the insight on wind power. A huge problem I have is both roofs on the house and garage are covered by big trees. So, I figured while solar panels on the lawn is a pretty limited option, I could supplement with wind power. For now, I am trying to make sure that sunk cost fallacy attitude I worry about is in check. So, the only direction I have taken thus far is building a decorative garden windmill if only to get an idea on how practical wind is for me. As a bonus, I could even repurpose the derrick the windmill comes with to install a proper wind turbine. Even though the derrick is a meager 12 feet tall, I have seen some promising signs to move forward. Getting the entire property off-grid is probably unlikely no matter what wind and/or solar kit I try to install, but if I can get a few power-hungry toys running off this build, that would be stellar.

Having worked in the small wind industry for 12 years, selling ~4000 small wind turbines, having one in my own yard for 14 years now, I would encourage everyone to install solar and forget wind, for the reasons Matt gave here. The 3 small wind manufacturers I worked for are long ago bankrupt and the goofy designs shown in the video won’t produce hardly any energy but will cost a lot. Large, utility wind makes sense because they’re hundreds of feet in the air with massive rotors.

@jadeskye6755

2 жыл бұрын

I'm not an engineer, but just from a simplicity standpoint, solar doesn't have any moving parts, wind does. That alone seems like a good enough reason to consider solar over wind for small installations.

@Alrukitaf

2 жыл бұрын

The resistance of wires reduces the power supply from grid scale wind generators, so i wonder if these power loss calculations were used to decide the argument.

@scottmcshannon6821

2 жыл бұрын

@@jadeskye6755 yes, i agree max out your site for solar before considering solar. i thought the roof top horizontal concept looked very interesting.

@Alrukitaf

2 жыл бұрын

Stil, micro wind doesn’t use extra land. If energy use is close to where it’s produced, you save the heat losses from resistance in the wires. Also, works at lower wind speeds. Probably could edge out solar in winter months.

@ybra

2 жыл бұрын

@@jadeskye6755 Also imagine how annoying your neighbor's old squeaky wind turbine would be. Solar is silent, which makes it a much better fit for a residential neighborhood.

I like that the Ridge-Blade can be installed right along the ridge of a roof where you likely wouldn't have any solar panels; it allows both systems to be installed in parallel.

@jacktoy3032

2 жыл бұрын

I hope it gets thoroughly trialed out in cold climate regions subject to snowstorms and snow accumulation on roofs.

@trainstrains1

2 жыл бұрын

I was thinking the same thing. My house faces west and is on the side of a hill so when someone sneezes down the bottom I get a hurricane at the top. Like you say, I think the two systems would compliment each other nicely.

@lordgarion514

2 жыл бұрын

@@jacktoy3032 No need to test such a specific situation. It works, or it doesn't. Snow blocks airflow. You have to clean the snow off if it builds up and blocks airflow. If it doesn't build up, then no blocked airflow.

@rocknrollboy22

2 жыл бұрын

Pretty sure they're out of business - their phone numbers are all defunct and their social websites are all down. Tried to fill out their form to get a quote and that was broken too.

@gerritgerritsen9894

2 жыл бұрын

Bird Killing !!

Thanks for another informative video. One alternative option not considered here is community ownership of large scale wind; where as others have pointed out the payback is much better due to the larger rotors and taller base. It’s an option worth exploring in many windier areas, either to compliment Solar and make up any shortfall you may have due to limited roof area for your panels or where there are total restrictions in apartment blocks etc. In these situations clubbing together to build a co-operatively owned wind farm (and or solar farm) are great options. We have a number of regional projects in the UK, where cloudy days are common on our small island but the wind blows a lot. There is also an innovative company called Ripple energy that is using its expertise to help develop new wind farms and offer them to the public for shared ownership through a co-operative model and partnering with energy suppliers to take the costs of the energy generated off those owners bills.

@victorabadia9700

Жыл бұрын

Community ownership.. sound like a great Idea!

@aldozilli1293

10 ай бұрын

Great idea. I live in a small village located atop a hill in the Weald in Sussex. We get loads of wind from all directions and this would be ideal to power the whole village.

Thanks! That's the exact video I was looking for, and it simply answered all my questions. At the first glance, a small wind turbine sounds like a perfect solution for a solar-powered house in my region, where it's often cloudy and during the winter solar panels are dead, covered by snow. But the problems and costs that such a turbine brings are making all this so unprofitable, that there is no surprise you don't see individual wind turbines around...

@rotifaoluwasegun7219

Жыл бұрын

Nice one and tracking for better choices. Thank you so much.

After watching a few of your videos on renewable power generation, my thought has stayed the same. We're designing buildings to be more efficient in power use, but not power generation. Is there a future where a building is designed in an unconventional way where power generation is more efficient? As in, walls and roofs that collect wind and solar, basements that collect geothermal, floors and doors that collect kinetic, etc.

@carbon1255

2 жыл бұрын

It is incorrect, at least in the UK we are moving towards heat pumps, many of which use ground heat- it is NOT geothermal, as that requires drilling a few kilometres down to find a magma chamber- to both heat and cool homes. You are wasting your time to collect door kinetic energy. We aren't really designing buildings to be more power efficient at all- these "eco houses" are unsustainable and inefficient - often with flat rooves which have very poor thermal performance- concrete constrution also thermally poor, with many points of thermal bridging. They use short lifespan materials and construction methods and often have huge windows that lack curtains, making them too hot in the summer and too cold in the winter, massively increasing costs. Modernist architecture is completely incompatible with power efficiency and green living - it is simply associated with socialism and thus a shared inspiration with eco architects. For efficiency a house should have low surface area- ie be similar to a cube- or be terraced or semi detatched. The roof should be self cleaning and long lasting - a pitched roof will last 30 years, a flat roof is only specced for 10. it should have strong structurally rigid long lasting weather protection on the outer face in a material that will last hundreds of years- such as stone, brick, block, etc. It should have a cavity to protect from damp and add extra insulation. It should have a very insulative inner wall. Windows should be thickly curtained, to keep the heat in during the night time, or the heat out during the summer days on the sun side of the house. Radiators (or heat vents in canada) should be directly under windows to provide a stable temperature and prevent window frosting. Ceilings should be low to keep the heat closer to the occupants. All space in the property should be utilised to allow for a smaller physical property for the same space. All internal walls should be insulated too and smoke seals around the doorframes so each room can maintain a separate temperature. Heat producing appliances such as a kitchen or fire if you require one should be central and low- basements if you have them - (though logistically you do not want to take shopping down stairs and garbage up) If you are serious about being green, you would forgo both clothes dryer and dishwasher - invest in a mangle a maiden and a pair of marigolds. in terms of transport you would replace your push bike and car with an efficient moped which will produce less co2 than a cyclist. a tuk-tuk for example if you need extra space for some reason. You will have no pets. you will grow much of your own produce in your garden- which is far better than solar panels in your garden due to the carbon consumption of food production. If you are even more serious you will build a cistern underground and collect your own water not rely on high pressure mains water. Of course we could also all live in small apartments in big concrete block buildings like the soviet union too.

@adambuzza4901

Жыл бұрын

There was a system called "Wells Walls" in Australia about 40 years ago, but people were turned off by how it looked so it never took off - it involved having external louver blinds in front of glass over a blackened brick wall, with closable vents internal top and bottom. These cavities becomes a passive heater. Clever, but you house sort of looks like a shed.

@farmerted-treefarmerplenip9665

Жыл бұрын

Forget the neigh Sayers. This is exactly what needs to happen innovation, from the ground up. Or walls in. Or roof in or outward. Why does it not happen? People boo hoo about it, but change always makes people uneasy. When you find a place that people have abandoned, you see nature rebounding based on similar concepts to what you've mentioned here. Plenty of $$ in what you've said as well

@jaybelle1909

Жыл бұрын

This is the fault of architects and city rules.. also if nations would make the common sense move to nuclear power none of this empty talk would happen per nuclear is the cleanest, cheapest, safest energy source we have

@malikr2271

Жыл бұрын

Not in the US. That type of innovation will be stifled with red tape.

Dude, i've been fantasising about a roofridge windturbine for years.. awesome to see its in the works.

This makes so much sense. I have experimented with horizontal drum fans for energy generation and found this visually attractive over propeller fans including and the ease of protecting the fan drum with damper blades at high wind velocity's. The idea came to me some years ago from my heating and ventilation back ground.

As always great info. A friend in a remote cabin needed some power. I built a small solar panel that incorporated small squirrel cage fans on top connected to a generator, munted on tp of the 4 solar panels. Beneath the panels I looped black poly pipe for passive hot water and heating. As small as it was/is it worked. Thanks. Don

Thank you for coming back to this topic Matt. We live in rural Missouri. There are times when it's cloudy/overcast for days in a row and we're considering supplementing our solar. I was totally unaware of the yearly maintenance. I'm now confounded about how I would do maintenance if our windmill were 65 feet (19.5 m) high! After watching I still feel I'm not ready to take the step to wind power. I'm going to root for the ground based (edit typo: vehicles) vertical systems to become .... Everything we need.

@angrydragonslayer

2 жыл бұрын

i'm not sure about laws in missouri but i helped set up a turbine for a friend while i was staying at his place in utah, he paid ~$1200 (total) for a 2.4kw unit from thermodyne systems. as for prices mentioned in this video, ask for some quotes and you'll likely find that you can't even find someone asking anywhere near 5k per kw without it being extremely hyped or something like a full install (likely including arranging legal stuff)

@ChinaChuck

2 жыл бұрын

@@angrydragonslayer Thank you much!

@angrydragonslayer

2 жыл бұрын

@@ChinaChuck just a fair warning: do not expect much if you have low winds this goes for literally any wind system

@richardprice5978

2 жыл бұрын

@@angrydragonslayer is he in northern Utah? and or engineering wise did it make sense? and with average 15 to 30 mph is it a good fit 9 month's out of the year?

2:24 The thing is, the area the blades cover doesn't affect the energy generates linear, but squared. Which means increasing the length of the blade increases the energy generated exponentially. So bigger wind turbines are way more cost effective than what you can put on your home.

@paulogden7417

2 жыл бұрын

Exponentially? No, it’s still a squared law. But your point is correct. Elevation is also important. You gotta go high to get away from the surface friction. And it takes money to go high. So as you say, wind is not effective at homeowner scale.

@InfiniteLuke

2 жыл бұрын

@@paulogden7417 f(x) = x² is kind of the most basic exponential function. So yes, exponential. Height is also a factor (and you have to go higher to increase blade length), but blade length makes the output grow faster.

@marklion315

2 жыл бұрын

@@InfiniteLuke that's quadratic growth. exponential would be f(x)= a^x, where a is some positive number

@InfiniteLuke

2 жыл бұрын

@@marklion315 oh, you're right 🙈 I've always put those two in the same box.

@2MeterLP

2 жыл бұрын

And wind is much faster further up

20 years ago, solar panels were $4/Watt, and small-wind had a price advantage. Today solar panels are one-tenth their former price: 40 cents/Watt. This ranch property in the Mojave Desert came with a 10 kW grid-tie wind turbine, which pays the electric bill here. You need at least a couple acres, in a high-wind area, with no trees, buildings, or obstacles to block a strong, steady wind. That rules out 99% of homes. Also, even the best wind turbines wear out. There is really only one model, of one brand, that has proven to withstand the test of time at all, and even those have multiple "issues". I had to buy an identical turbine used, so I would have two on hand - one to run, one to rebuild. You need to hire a crane and experienced crew to swap out a turbine or do maintenance. Figure about $3-4 thousand just to pull down a turbine and fix or replace it. This model weighs over half a ton (1000 lbs) on a 120-foot tower. I also build my own small turbines, including the generators. This is an option if you are good with fabricating, are a naturally-talented engineer, and you know what you are doing. Again, that rules out 99.99% of people. The other "goofy" designs in the video are all total non-starters. People who are not in the industry have NO IDEA how bad these "alternative" designs are. They are completely worthless products of ignorance, period. Seriously, no matter how great they look, like that ridge-whatever, don't fall for it. Don't believe any numbers claimed for such toys. You need propellers to make good power. There is a reason all windfarm turbines look nearly identical.

Thank you for performing the quantitative analysis on this, and making the relative choice of solar over wind clear.

Matt, at 9:05 you didn't account for maintenance costs when calculating payback of wind. If you deduct $75 (1.5% of 5k) per year the payback period increases by over 50% increasing from 22yr to 34yr! That said, it took solar a long time to reach its current economic viability and I look forward to seeing where the winds of advancement take this technology!

@robevans8555

2 жыл бұрын

I noticed this too, although he stated maintenance costs of about $160 giving an almost 90yr payback, the turbine will not last that long is you'll never break even

@tin2001

2 жыл бұрын

People have been regularly and commercially harnessing the wind for thousands of years. Solar has only really happened in the last century or so. If we were going to see some major new wind turbine design that is more efficient at capturing the wind, I'm sure we would have seen it already.

@eklectiktoni

2 жыл бұрын

@@tin2001 That's not a sound argument. Just look at the history of flight. The ancient Chinese tried to make kites that could carry a human, da Vinci fantasized about flying machines. People desired to fly for millennia. But nobody seemed to be able to create a machine that could successfully transport people via the air. Before the arrival of the airplane, it probably seemed impossible. But now we live in a world where we can't imagine NOT traveling by air. I think the small scale wind turbine is an inevitability as long as engineers and scientists keep working toward it.

@robertanthonybermudez5545

2 жыл бұрын

His point actually makes sense. We just need a breakthrough in that area that will domestic wind generation more feasible

In 2004 I had NREL visit my Westminster CO home to verify whether or not to mount a wind generator. She taught me a valuable lesson in physics - Rule of thumb : 1) when wind hits an object such as a large tree or a house, then the force of the wind goes up in the air by four times the height of the object and then takes 10 times that distance to get back down to the ground to create the money making force. The good energy in urban neighborhoods is therefore over 100 feet in the air. 2). What wind you feel around your house is full of eddies, constantly changing direction which creates excessive stress and wear on the moving parts of the horizontal-form generator by forcing it to do 180 rotations many times a minute. Vertical generators handle this wind reversal better. I mounted 40 toy wind mills on my fences and corners of the house and yard and it was easy to see the wind changing direction 100s of times a minute. Some of the toys in the most turbulent areas were worn out in a few days, Most city building codes won't allow and mounting pole to exceed the distance of falling into the neighbors yard. Since most yards are small this eliminates the possibility due to code. She summarized that a good money making generator works best when your yard has a long clear unobstructed view toward the prevailing wind direction. Note: Effective professional research has already been done a long time ago

@dwwolf4636

Жыл бұрын

VAWT are also significantly less efficient and require more structural support that HAWT.

Matt, very informative. I wind power and unlike a lot of people I like wind farms are a spectacular and beautiful sight. My current project is to electrify a travel trailer for as long an off grid stay as possible. One major factor of course it my roof top PVs, which I have just learned that I can get thermal electricity from them with a hot to cool transfer plate behind them and a small fan pushing the heat away from the cool plate. It's not a lot of power, but I'll take what I can get. My question for you is, what to do to a piped flow of hot air forced from the back of my trailer roof.... certainly there must be some type of additional generator that the rising hot air can be used to fill small sails like a small wind/water mill generator. The trick will be in not creating an back flow to the solar panel system. I just hate to see this hot wasted when I need more power.

Thanks Matt. Have been thinking about Wind as my primary source here as I am coastal, caught in a dip in the middle of town on a street with many houses. So sticking a small wind turbine wouldn't work for fear of it crashing through the surrounding area. looking in to the future would look like the ridge top to generate power would be the way to go. but living here with a neighbour sharing the roof. In a semidetached home brings other problems. But another great video and lots to think about.

I love how you explore not only the standard horizontal blade systems, but the many alternatives, both current and upcoming. It gives me great hope for wind power's continued and future success.

@FUTUREDTECH

2 жыл бұрын

Same here! What future technology innovation are you most excited about?

@HakunaMatata-os1og

2 жыл бұрын

@@FUTUREDTECH Medium term: micro-fission powerplants. Not actually micro, but small enough to fit in a shipping container, and self-contained. Long term: Programmed-molecular solar thermal (MOST), Solid State Wind, and Lattice Confinement Fusion.

Matt, thank you for this video - this is an area that we definitely need to explore. There are some unexpected applications - like a row of vertical axis turbines on top of a traffic barrier. The traffic going by in both directions can get them all spinning. An interesting aspect of vertical axis turbines - when they are place closely together, they actually benefit from the turbulence of the other turbines around them. With horizontal turbines, if they are too close together, they lower the overall output, because the turbulence prevents the downwind units from working as well.

@zazugee

2 жыл бұрын

i remember i spent hours researched VAWT on many forums, most of them were focused on DIY i never tried IRL bc i didn't have the means or the money to start a project myself

@godfreypoon5148

2 жыл бұрын

"The traffic going by in both directions can get them all spinning." So it's powered by the traffic... Yeah, it's an outrageously inefficient petrol generator.

@NeilBlanchard

2 жыл бұрын

@@godfreypoon5148 If the traffic is there anyway - then its free, essentially.

@godfreypoon5148

2 жыл бұрын

@@NeilBlanchard Oversimplified explanation: The wind is caused by the air getting out of the way of the cars. The turbines work by harnessing this air flow, i.e. they make it harder for the air to get out of the way of the cars. So the cars have to work harder to push through the air. But it's worse than that - because the energy is transferred though such an indirect process, it is an incredibly inefficient transfer. Apparently there is something like a 20-fold loss in the transfer and this makes the overall CO2 impact several orders of magnitude worse than coal power. It gets even worse - because the extra fuel consumption is spread out over every car that passes, no-one is ever going to be able to notice. But the impact is still there, it has just been made inconspicuous. The situation has been made much, much worse, but because it's hard to see the impact everyone will think it's great. Bottom line is that there is no free lunch. That's a consequence of the first law of thermodynamics (conservation of energy).

@NeilBlanchard

2 жыл бұрын

@@godfreypoon5148 You're over thinking it. This doesn't add drag - it is taking energy that is wasted - a typical car for every mile has to push 4.5 TONS of air out of the way. And once that air is moving, getting some of that energy back - IS A GOOD THING. And we need to make all the cars electric, anyway.

Some of us are limited by solar with existing structures like dormer windows on the roof or not ideal orientation of the roof. Despite what we are told about angles, I have solar panel on my gable wall on my house. Hugely increasing my solar panels area and very little difference in output. We need to start covering our outside walls in solar. That windwall you showed, I'm currently building a fence using the same idea . A row of vertical turbines encased in a fence frame. (Many thanks to Robert Murray smiths channel and TNT) look how much fencing you have around your home. Quite a lot of lineal length. So even small amounts will add up. We need to start looking at our homes as a power plant. Where can we squeeze power out of our home, through wind, solar rain power, gravity power, any little amount as long as it doesn't cost a fortune to get 10 watts. it all adds up.

Here in west Michigan, during about 3 to 4 months in the winter, we have dark, heavy clouds or snow on the solar panels. However, often when it is overcast, the wind will blow for days. No solar power, but plenty of wind potential... I am convinced that there are areas where having both makes sense.

Love the ridge blade design , looks like it has a future , quietness and servicing costa would need to be low for home owners. Larger buildings with pitched roofs such as public buildings may make it more cost effective along side solar

@whatafellow

2 жыл бұрын

Right. All that's needed is to figure out a way to rotate the house to allow for change in wind direction :)

@DavidHalko

2 жыл бұрын

@@whatafellow - there is already a constant flow of air to the existing ridge vent, from sunlight heating up a roof or from panels heating up, so this additional updraft should help, as long as there is sunlight

@sabret00the

2 жыл бұрын

I too favour the Ridge Blade. I'm hoping to see the technology become affordable to the point of it becoming a standard

@DavidHalko

2 жыл бұрын

@@sabret00the - I wonder if existing squirrel fan type wind turbines can be mounted in a horizontal fashion to build it DIY?

@PaulvanEgmond

2 жыл бұрын

I agree that it looks promising on the face of it. But I wonder of the ridge blade design will attract birds, bats, and squirrels in search of a nest.

Dear Matt, Thanks for your informative videos every single time! I want to point out that the g /kWh that you mentioned in the video are off compared to the numbers I know. Yup, I know this is an wikipedia link, but these are quite representative. By nature, natural gas has an emission of around 200 g/kWh. This is without the efficiency loss at a power plant, making electricity from gas in a combined cycle gas turbine (CCGT) power plant of around 58% efficiency already 350 g/Kwh emission. Please continue on making these great videos. I sure enjoy watching them ;-) *I work as a Dutch energy consultant Link to CO2 emissions: en.wikipedia.org/wiki/Life-cycle_greenhouse_gas_emissions_of_energy_sources

@OffGridSupplies

2 жыл бұрын

Gas is worse than your figures if you include fugitive emissions/leaks in the gas supply chain. At a typical industry loss rate of 3% then if you take in the 20 year CO2e impact of this you end up doubling the effective emissions.

Thank you sir… just starting to look at these things. I have just “retired” to Vancouver Island, in BC. Loads of wind but solar is sketchy. I have the perfect south facing roof and several out buildings to boot. Planning is fun and your channel is a new resource… we shall see.

I came up with a small ridge tile generator, which had one rota fitted to each tile. These have an 360 degree movement. So you could have a string of them all along your roof. The roof catches & compresses the wind upwards into the rotors, so that any direction will spin them. These were 12v, so you could attach them to a pear of + & - wires running parallel from one end to the other mounted under the ridge tiles. Yes you will need an inverter to manage the flow. But there are plenty of experts who could improve their efficiency. Thanks for the info, have a great day.

in the USA it may not make sense but the turbine design from "the Power Collective" shown would work very well in the UK where we get far more wind than sun , if you look at the highlands of Scotland the viability shoots up compared to the average US install

@SaveMoneySavethePlanet

2 жыл бұрын

Yea, I definitely expect there to be “best regional solutions” eventually as we continue down this path.

I like the idea of combining the ridgeblade wind turbine to the apex of my house roof and having solar panels on the roof too. I hope that when the residential ridgeblade is available it will be able to coexist with solar and make homes much more self reliant. Combining that with a home battery and an EV, it makes it much easier for travel costs and home heating / electrical use to be factored into the purchase price of the panels and turbines, making it much more cost efficient. I would be interested to see what other mini wind turbines are actually available as a lot in this video are concept/ not widely available.

@-whackd

2 жыл бұрын

If you are both powering a car and a home, you will need a lot of solar. You could also reduce your heating/cooling energy use with a geothermal system and solar water heating.

@iandick2296

2 жыл бұрын

RidgeBlade is in receivership.

The roadside wind turbine you researched sounds amazing.and the principle would be perfect for roof tops also. As always, enjoy your work and presentation

Good video and I appreciated the information about the RidgeBlade and Joe Doucet's Wind Wall. I'm surprised you didn't include Tesup (Atlas 4 or AtlasX) as their technology has been around for a number of years and seems to have a pretty solid power curve and only stands about 4 feet tall which could easily be attached to the top of a home making installation and connection to a home inverter (especially if you have solar already) pretty easy.

I was hoping for a small ~1kW turbine that would be used to charge a storage battery similar to a Powerwall. Instantaneous power would be sourced from the grid or battery and the turbine would just provide a charging current. We are up at 57° North and for a lot of the year the weather conditions (Scotland - cloudy, windy) and limited sunlight hours mean solar just isn't as useful for us. Unfortunately, it looks like the technology isn't quite there yet for small turbines. Hopefully the products you highlighted will continue to be developed and put into full scale production over the next few years. Great video, thanks.

@psihius

2 жыл бұрын

The thing here is physics - small turbines just cannot harvest a lot of power, but are still complex products. That's why the bigger the turbine, the better the economics look for it because it can provide a lot more power - making the turbine blades 2x longer gets you 4x the area that power can be harvested from meaning the turbine power grows 4x. Considering you are in Scotland and it is pretty damn windy out there and winds are pretty stable on average, having a comunual big wind turbine owned cooperatively can be the difference between payback period being 22 years like in the video for not a lot of power produced to having like a 5 year payback period and producing so much power that you gonna have to sell a lot to the grid. The downside is the required investment upfront, sadly.

A very informative video, thanks. I live in a hill top in north-east Scotland where it’s windy most of the year and very windy in winter. Ironically , I look out on many wind turbines at sea and in the mountains from my house but the cost of energy here at .28 pence per kilowatt is just outrageous. I use 8000 kws per annum. I would love to install a ridge line wind generator to supplement my solar panels , air source heat pump and soon home battery. I just don’t have the confidence just now in finding the right product to do that. I was very impressed by the ridge wind turbine system you showed but wonder about the aesthetics and performance.

Agreed. It is a very niche solution. I was considering it for my cabin to complement the solar installation. Being the idea that usually a rainy week meant wind. But registered the wind on a whole year plus the costs and it simply didn’t make any sense. For the occasional long rainy week the backup propane generator it is just fine.

Fascinating video & very helpful. A friend built a wind turbine/power generator just large enough to power electric heaters for a lake house that was unoccupied in the winter. That was 1979. They have updated it, but the basic design still remains.

This is a good idea, but the real issue with renewables isn't the production, it's intermittency. We in the Netherlands are literally putting hundreds of millions of dollars worth of solar-PV into the ground (disposal) because the grid cannot sustain it. We need storage and an upgrade of the power-grid before thinking of new renewable energy sources. For this, we need government investments.

@drillerdev4624

2 жыл бұрын

kzread.info/dash/bejne/gHxowZSJdrfgebw.html Apparently, some finnish folks are onto that, converting excess from solar into heat which is applied to underground sand pits, and used as heat batteries. They even propose it as a yearly cycle, used heat accumulated during summer through all the winter. I just stumbled into it today, and thought "This should be on Matt's channel". And there's at least one concentrated thermosolar project, called Gemasolar, which accumulates heat trough the day, and at night uses that heat to move a turbine to produce constant power.

@-whackd

2 жыл бұрын

Your electricity company just needs to pay customers who provide electricity when the grid needs it. They will build out their own distributed battery system in homes, business and electric cars that can plug back into the grid when needed.

@adrianthoroughgood1191

2 жыл бұрын

Are you talking about wasting the excess electricity or actually removing working panels that are already installed? That seems crazy to do. You can just disconnect them from the grid when there is excess and there are always some times when the power is useful.

@darkshippo

2 жыл бұрын

Go nuclear =)

The wind panel at 12:33 while it might not be that efficient, if positioned to block the sun on your home, could help reduce cooling cost. Not sure if it would justify the cost over just planting tree's or tall shrubs though.

@ThomasBomb45

2 жыл бұрын

Solar panels also shade your home ;)

@drillerdev4624

2 жыл бұрын

I thought about that too, but the moving patterns of light you'd get from the blades could get annoying pretty fast, I'm afraid.

I love wind especially the ridge blade you mentioned. That and vertical axis turbines ( Icewind)

We are just now adding storage batteries to our solar panels in Australia. We tried to find out information about adding wind generation but couldn't get any information about generation at lower wind speeds. We do get quite a lot of wind but, in the end, decided that there was just not enough information available for wind generation at sub optimal speeds. Your video is very interesting and I think we made the right decision, at this stage, not to add a wind generator. When technology has improved we will relook at adding a wind generator. You provided more information than we were able to glean from the manufacturer. We asked direct questions about sub optimal wind strength but they couldn't or wouldn't give us a graph of diminishing production for diminishing winds - very disappointing.

Thank you Matt Farrell. I live on a hill on the opposite side of the valley to Ogden Wind Farm - think Wuthering Heights, (AKA Ovenden wind farm), one of the worlds first commercial wind farms, and it's frustrated me for years why domestic wind isn't feasible. I've just been told no every time I've asked. At least now I know. Price to performance is too low, unless you go BIG! Though I can't help but think that 500w is better than nothing. It's all in aid of a greener planet after all.

Thanks for covering this Matt. I self installed Solar over 5 years and now all of my roofs are covered and I am getting more EVs (Kids are driving now). I started looking heavily at Wind as an option a year or so ago so this is very timely. Thanks

A well thought out and informative presentation. I would always recommend a wind/solar power combo. Vertical Axis wind turbines proved their effectiveness at the 2012 London Olympics. Unless you have very good damper system, then fitting a wind turbine to your property isn't a good idea. I haven't seen the top of roof system before and would appreciate some more information about that.

Thanks for this posting Matt! I hope the technology keeps progress.

In my view small-scale wind power will never be able to compete with solar power simply because of the lower energy-density of wind compared to sunlight. Air moving at 4 m/s has a kinetic energy of less than 10 J/m^3. This means a hypothetical technology that can extract 100% of this energy receives about 40 W/m^2. Theoretically, the maximum efficiency of wind turbines (the Betz Limit) is about 59%, but in practice wind turbines achieve at most 45%. That leaves less than 20 W/m^2 of energy production. This compares poorly to PV panels. For example the panels on my roof (which is far from optimal) produce about double that. So for a comparable amount of power you need an installation that is: 1. Larger 2. More complicated 3. Maintenance intensive 4. More fragile The advantage wind has is that wind energy increases with the cube of wind speed, and system-losses decrease with larger turbines. This is why large turbines in windy places (e.g. at sea) make so much sense. Solar power, in contrast, is strictly linear: You want double the power, you need twice as many panels. So basically the physics of wind turbines favors large turbines, while the physics of solar places no penalty on smaller installations.

@gregorwachter6804

2 жыл бұрын

very well said, thanks

@danelendil1424

2 жыл бұрын

I'm not that good at physics so I won't even begin to question your math, but : 4m/s is very slow wind, basically the minimum wind speed to get any kind of power out of most wind turbines.. Also, you're saying your solar panels produce about double energy/m^2 .. At what times of day ? How sunny is it where you live ? There's a great many factors that go into this..

I've been following the development of the archimedes turbine with hope for several years. Imagine every home in the neighborhood with one of those 'flowers' producing electricity. my concerns about solar are post-use pollution from toxic ingredients.

Once again thanks Matt. You are the only producer out there that makes sense of things

One common red herring is turbines that work in low wind speeds. Because the available power from wind goes up as the cube of the wind speed so there is 125 times the power available in a 5mph wind as in a 1 mph wind. So optimizing for low wind speeds is a fools errand because the higher speeds are overwhelmingly more productive.

I could see a wind system as more practical in cold weather: On a typical winter day solar is decreased (assuming you can even keep snow free), and heat loss from a home is proportional to wind speed. Reduced foliage on local trees would also help. My main concern would be accessing the turbine for maintenance, having the room to drop it down to ground level is a big plus.

@crazyfvck

2 жыл бұрын

@Merfax Yeah, I would need both solar AND wind here in Northern Illinois, if I want to be completely off grid. Some of my neighbors have installed a number of solar panels on their roofs over the past 2 years, and I was very disappointed to discover that they do not have a heating feature to melt off snow. If I went solar only, I would have to keep them out in my yard at an accessible height, so I could brush the snow off during the Winter.

@carbon1255

2 жыл бұрын

@@crazyfvck There are icing issues with wind power in snow, and the heating often costs more than the solar is worth. In cold climates renewables at the home scale is quite tricky- carbon neutral wood burning/gasifier is often a much better option. Fine environmental dust is also an issue with solar, so keeping them washed is important, like you say some way to clean them is good.

@farmerted-treefarmerplenip9665

Жыл бұрын

have you considered 'night time', which I guess could be considered colder weather... or also during cloudy days. Interesting how so many people dismiss the complimentary effect of wind power... forgetting how many decades of research have promoted solar over wind for residential application

@tesmith47

Жыл бұрын

@@carbon1255 turbines in Greenland a tartic

@tesmith47

Жыл бұрын

What about vertical turbines

What a brilliant video, I loved this and found the information fascinating. Its such a shame that domestic wind applications don't make sense for us right now in urban environments. Solar looks to be the way to go. I was recently quoted £6300 (around $8220) for a 14 panel solar installation (about 5kw) with no VAT, so solar in the UK is far cheaper than across the pond! Thanks for this, I really appreciate your effort.

@alals6794

Жыл бұрын

Yes, UK solar install is far cheaper than USA but what are your average electricity costs there, in the UK? Just curious

@kemiz4

Жыл бұрын

@@alals6794 2-4x higher than in the states

Great video! I live in Tuscany, Italy and despite it being an extremely windy place it would probably make more sense to invest in residential geotermal rather than wind for now. Still looking forward to new development

Friend installed one on the roof of his off-grid house. The house is basically a large garage shed on a concrete slab. Anyway the thing lasted up there less than a week before being moved well away from the house. The vibration set the whole place humming and rattling. I conclude that turbines are best installed on their own well-grounded tower.

Good to hear of new developments in wind generation! Just recently had solar installed and we're happy with the energy. Had a slight issue when it was windy with one panel rattling, which I've had fixed since. It gave me the idea that what if under each panel there was a way of capturing the wind. Seems like future solar panels could be made to capture the wind as well with vents under each panel leading to a micro turbines. Not sure if this would be feasible, but worth an experiment.

@bobhorton5440

Жыл бұрын

I love this idea ... I've got too many irons in the fire but otherwise I would definitely look into a solution like this. 👏

Thanks for the great video. I’m wondering where you got the CO2 emissions per kWh for gas (78 g) and coal (109 g) from? On my quick research I found numbers like 350 g CO2 for a modern gas power plant and 700-900 g CO2 for coal plants depending on brown or hard coal.

@johndoh5182

2 жыл бұрын

Independent source or govt. source? The govt. went through 4 years of being pushed to lie, and that's still being undone.

@jfbachmann

2 жыл бұрын

I also found much higher numbers in co2 per kwh

@Traxnrax

2 жыл бұрын

I'm guessing he used the numbers for the newest most fuel efficient plants. I know the new stuff is definitely better than 20+ year old stuff. Not clean, just cleaner

@gabrielmartin-hsia5271

2 жыл бұрын

Can confirm 350 g/kWh is in the ballpark for natural gas. We run a 510 MW combined cycle block where I work. Two General Electric 7F gas turbines and a D11 steamer. When we're at full load, each of the gas turbines pulls a little more than 21 pounds of gas per second. Do the combustion stoichiometry and that's 58 pounds of CO2 out the stack. Every second. So from both gas units, over the course of one day, that's 4,990 tons (or, the weight of about 2,500 Ford F-150s). So, with our 4,990 tons of CO2 per day, generating 510 MW, we can do all the fun unit conversions and we come out with 370 g CO2 per kWh.

@dwwolf4636

Жыл бұрын

@@jfbachmann residual heat usage included in numbers?

The roof ridge format makes the most sense for residential use. The actual one posted appears to be sized for industrial use versus residential. From a practical perspective a residential contractor normally does not need a boom. Also in New Enland, as you probably already know the roof ridge support air flow on the underside of the roof. I suspect the amount of power generation capacity, durably and materials drove the design size to a more industrial scale and cost. Also I read there are vibration style units under development.

The design of the ridgeblade seems like one of the more practical residential designs. An idea i like is using the turbine wall as really unique fence line along the front of a property. You still gave all of the issues of it being low and blocked by other structures. Not sure if the wake from cars going by makes up for all that xd

Could you do a video on small scale hydro power for ocean side or river/creek side properties? I think that could be more cost effective because of the higher energy density that water has with respect to wind. Although it's rare to see it because of the location restrictions.

To-the-point and credible, as always. Matt Ferrell is likely the best and most "well-rounded" KZread technical expert. Your ability to explain a wide range of challenging scientific topics is unsurpassed.

Thanks for this video. It gives me a reasonable feel for the cost difference between the two generating systems. What I’d really like to see is a solid video on an off-grid installation that approaches these technologies as complementary parts of a system instead of competing business models. Imagine an integrated wind/solar generating system with an integrated battery system. That’s a package that can capture peak generation, whether wind or solar, and carry the load when either or both fall short. And that system could be presented as a scalable design so larger or smaller systems would be relatively easy to get to. Finally, do me a favor and pick one location for the video. All the double talk about “results may vary” is just a distraction. We get that. We just need more information.

I absolutely love your videos. So informative, well researched and topical

Only through continued development and testing can we see meaningful results. Your video of the various Wind Generators was fascinating and thought provoking. Great job. It appear to me that ridge top wind power generation could be the most attractive as well as effective. With Solar Panels do we have facilities to recycle or dispose of the ones that have ended their useful life cycle? I personally am in favor of 'at location' power generation for every home and business. We need to preserve farm land for food and livestock production. An army indeed marches on its stomach; so does civilizations. Wind and water in my opinion are by far the most effective and sustainable power solutions unless we produce enough methane from animal and human manure.

One factor that could be major is orientation. Sun prefers a north/south orientation of the roof in most of North America to optimize sun angles on the panels. Something like the ridgeblade would ideally be placed on an east west roof to take advantage of prevailing winds. So if ridgeblade can be on par with solar cost wise, then it becomes an attractive option based on your roof orientation

@rich.trails

Жыл бұрын

Here in Central TX, the wind is almost always southerly in summer and north in winter. With that said, it seems like we get endless sunny days here.

I agree that, due to the intermittent availability of natural wind at many sites, wind turbines might best be used to provide the "intermittent load" portion of one's energy budget, such as for driving a cistern intake pump or the low-wattage, nighttime-only devices such as lighting.

I installed a 4Kw PV system in 2016. It produces more than sufficient electricity during the summer months (November to March), but through July to September usage outweighs production significantly. I run undertile heating through the winter 24hrs a day and charge an EV year round usually overnight. I live in an area considered a high wind zone, and it would seem to make sense to use that wind to produce electricity at times when solar is not productive. A few years ago I looked at a vertical axis wind turbine that could be pole or roof mounted and the new business that was advertising the product was convinced it could organise the consenting process with the local council, but seem to have disappeared. I do like the idea of the ridgeline turbine but would suggest that the home would need to be built in the correct orientation to maximise production which may not suit solar production.

I imagine that when utilisation of solar goes down (cloudy/night) then it would often go up for wind. Utilisation of both sources is a major issue. Batteries are still small and expensive so having two sources of energy complimenting each other sounds like a good deal. Looking forward to some of the new techs (ps. I live in a windy area close to the sea)

@ThomasBomb45

2 жыл бұрын

Grid scale wind and community owned wind is the way to go if you want wind power

@johnreilly7483

2 жыл бұрын

Check out sirocco energy - they have a new design for a turbine that supposedly Produces significantly more power and less noise with minimal maintenance and low startup cost. They will be releasing them this year so may want to wait until the first testimonials drop before you spring a few thousand for it

@stuarthirsch

2 жыл бұрын

I think you need a triad to form a robust off/on grid. You need solar, wind, the utility grid and/or a backup gasoline or diesel generator. My ideal system would be solar 50%-60% of the energy to charge the batteries, wind 10-20%, and the generator or utility grid 30%.=40%. The solar panels/wind turbine/electric grid/generator would charge batteries and be capable of powering all critical electrical devices even in the event of a prolonged power outage, or completely off grid.

@parsonk4041

2 жыл бұрын

With new panels you can still generate a decent amount on a cloudy day as long some light hits them. Battery storage costs on average 800-1000$ per kWh. So not sure if a turbine is worth all the hassle.

There is one more advantage to Solar Panels in the US Southwest areas: Air conditioning requirements are lower due to the shade produced by the Solar Arrays. This reduces Power Consumption significantly on warm days, as well as reducing wear on the AC, filters, etc.

@SaveMoneySavethePlanet

2 жыл бұрын

Great point. People often forget about the cooling effect that they have!

The first heard the term "micro-wind" power in 2003 while visiting an off-grid "intentional community", or old hippy commune depending on your POV, somewhere deep in the woods in/around Vermont or New Hampshire who were fabricating their own parts and building custom-sized windmills attached to various sized turbines they'd made from recycled motors and generators. They found several spots with "micro-climates" on their property where structures, rock walls, or gaps in the forest caused wind to speed up. They managed to place their relatively small devices in spots that maximized the use of the wind and were creating a respectable amount of power with them. Although the small-sized windmill/recycled generator turbine devices were ingenious, it had literally taken them 40 years to figure out the right locations for them.

Really seems best mostly for installations in rural / semi-rural areas in places with lots of cloud cover that need a bit of "base load" reliability (compared with solar) during the cloudy seasons

Again,Very knowledgeable and well explained video. Will u make similar kinda video on concentrated solar thermal vs solar PV for the residential/small scale use? Combination of solar thermal and Stirling engine seems very promising, & have some clear advantages over a pv like low initial cost, higher efficiency and thermal storage for night usage.

I live in a very windy area so it has crossed my mind many times. We have much more wind than sun here. In fact my uncle made his own wind turbine back in the early 80s that he has had on his farm. I think it ended up being more of a hobby than anything that made financial sense. By the end he had 3 generators but they were often offline due to maintenance and repair problems

Thank you Matt I love the video it was very informative and after watching a couple other videos on KZread in the science project I did in the fifth grade I believe I'll be able to power my whole neighborhood for free at least after parts and labor

Hi Matt, a very informative and topical video, thank you. Have you made one regarding how to use or setup a storage system to save the energy one generates from solar/wind and to keep most it rather than send it to the grid. With the rising cost of electricity, it makes sense to use some battery storage system instead of receiving the relatively small feed in tarriff. However, battery systems and the logistics of installing one seem daunting. Your clarity here would be very helpful. 😊

I'm interested in the impacts of snow and -30C weather on domestic solar panels and wind installations considering that those are our conditions for half the year where I live

@FUTUREDTECH

2 жыл бұрын

Great question! Would also be interested in understanding the temperature impact on solar panels. What future technology innovation are you most excited about?

@rogerphelps9939

2 жыл бұрын

@@FUTUREDTECH Solar panels like it cold. Here in Southern England a cool clear windy day in March is almost as good as a warm still day in June or July . You just need something to poke the snow off (hardly any snow here) in the winter and you are all set.

@FUTUREDTECH

2 жыл бұрын

@@rogerphelps9939 Good to know! Yeah snow-covered panels won't really work :P

Very nice presentation Matt and team! Wind is an awesome compliment to solar. Great to see some nice innovation in the industry! But IMHO solutions/designs/implementations will need time to be field tested for best designs and practices to be proven, so it's still early in the home wind solution space. And like anything to do with engineering, the answer is always: It depends :)

@farmerted-treefarmerplenip9665

Жыл бұрын

yes, once more money is pumped into wind energy, we will reap the reward. good point Chuck

They don't "compliment" each other. That would mean they'd be telling each other, "you're the best source of renewable energy" and "thank you, your flat surface is amazing". I think you mean they complEment each other. It's always fun for me to find those silly things, but your information informs millions of people. YOU are amazing! (My compliment to you. 😀)

Hello from New Hampshire. We are off-grid solar, considering wind as a winter supplement. We installed extra empty conduits when the house was built, we already have inverters, and would really just need to add a controller to our electric room. We are out in the country, and live on the south-east corner of a small valley, so there is almost always a decent breeze. Will let you know how the 'adventure' progresses, and whether it ends up being worthwhile!

This was really informative! I recently moved closer to the coast and it's more windy, and I already have solar, so I was wondering about the state of small home wind turbines. Would you consider doing a video on solar hot water, for domestic hot water or even space heating? I'd love to see a comprehensive video on where that stands today, it seems to be less popular than a decade ago, and that surprises me with how much more energy can be thermally collected from the sun vs PV panels. Maybe PV combined with the latest heat pump tech is a better way to go now in terms of simplicity, maintenance free, and efficiency?

@SaveMoneySavethePlanet

2 жыл бұрын

I’m not positive, but I think that heat pump efficiency has progressed so much that many people don’t want the cons that can come with those other solutions anymore. That may be why you feel like you don’t hear about it as much these days.

@CaedenV

2 жыл бұрын

@@SaveMoneySavethePlanet I was about to say the same. Rooflines have limited space for solar panels, and it often makes more sense to use that space for PV instead of heat. geothermal heaters plus water heater systems are advertised a lot (or use to be... now that I think on it, I haven't heard an ad about that in a while)... I would assume you can do the same with 'normal' heat pumps as well.

@anandvaidya67

2 жыл бұрын

In India, Solar Water Heaters are very common. With a 200Ltr storage we get enough hotwater even in winter /rainy season when there is not much direct sunshine. There are 2 types: Evacuated Glass Tube based and Copper Plate based. Glass tube performs the best. Should work in most of the southern US.

@rajanvarghese2352

2 жыл бұрын

I endorse what @Anand Vaidya has mentioned. The ROI starts from day 1 itself. No need for heat pumps, I have looped the supply through a standby heater, such that constant hot water is available 24/7. (Return on Investment)

I imagine it might be a better option for tall buildings, 5 or 6 stories or more, with less roof area for solar, but very exposed to wind than for individual homes

@SaveMoneySavethePlanet

2 жыл бұрын

Would definitely be interesting to study that at some point.

@tin2001

2 жыл бұрын

Someone years ago found helical vertical turbines mounted on the edges of a skyscraper roof would capture not only direct wind, but also the updrafts from wind hitting the building itself... So yes, it can be an option for tall buildings. But the output will still be very low in comparison to the power usage of the building, and the payoff time is still going to be roughly the same (IE decades).

@No0bT4rD

2 жыл бұрын

So your proposition is to instead just place any old windpower plant on a building? This can 100% be done and requires 0 new tech or RnD. With cash you could take this idea to market in like a month's time.

@FUTUREDTECH

2 жыл бұрын

That is an interesting thought! What future technology innovation are you most excited about?

I currently line in Fairfield, Ca where we can get at least a breeze of a few mph on 95% plus of days. I think that if you could find a small, yet efficient wind turbine and pair it with solar and a home battery pack (ex: Tesla Powerwall) it could make a decent 1-2 punch. I mainly see wind turbines “take over” power production from solar especially during nighttime or during times of severe overcast where solar cannot produce power or is very minuscule. Living on a coast or near a highway/large road or even a train line could also help produce some extra energy

Hi Matt thanks for the great video! I've invested the n Harmony Turbines and Halcium but both are still in development. Tesup is another UK VAWT I'm considering to compliment a Hybrid solar w/VAWT residential (City) system. A KZread on Hybrid controllers would be great info also.

I quite like the idea of the Ridgeblade wind turbine, but I'm wondering if a similar system could be installed _within_ the roof space. If you have a tiled roof and installed an inner roof, then the existing outer roof tiles could be refitted to act as a diffuser. The entire roof sides now act as an air intake / exhaust, with the gap between the roof layers now acting as a huge duct, carrying air into the Ridgeblade at practically the same angle, no matter which way the wind was blowing against the outer roof. I'm thinking that with some clever sizing of the duct to accelerate the airflow and generate more of a pressure difference, you may not need so many Ridgeblade units. The inside roof layer would have to act as your rain barrier, so you'd have to install a drainage system to mitigate that, but it could be done. You'd still have some inner roof space for storage, perhaps for a battery pack to store energy when you aren't at home or the demand isn't as high? Also, easy access for maintenance, just pop into your loft even if it's raining outside.

@IndigoIndustrial

Жыл бұрын

This option might work with plenty of sound insulation which would double as thermal insulation. Another option might be a small "steeple" on the roof to capture wind from any direction and focus it onto a small turbine. Something that can be built into new houses to constantly trickle in energy at nightime and during winter.

Wind could make sense in high rise buildings without a lot of roofspace for solar compared to the number of residences. Ideally the building could be designed to catch wind energie from the drawing board.

Appreciate the number crunching. Some graduate students, researchers, engineers, back-shed inventors etc somewhere are working on fixing the downsides of local wind generation. Moving parts, noise, lower efficiency, cost etc. Just something to be overcome and then we'll have a great solar/wind combo for houses.

good information. Looking at a location outside of the city limits on 49 acres with rolling hills. One area near the home location gets a lot of wind. Will go with solar panels for sure, but will look into the wind turbines as well. The info in this video is very helprul.

I'm purely solar at this point with battery back up, but the idea of having something generating electricity when the sun is down definitely appeals to me. Been thinking about small scale vertical axis for some time now. That roof mounted system looks like it could be game changing, along with the wind wall. If you think about it, you don't really need to generate a ton of electricity at night, so having even a small windmill can help decrease your storage/battery capacity while keeping the lights on.

@znail4675

Жыл бұрын

A small vertical axis mounted on the roof knock should also be more efficient. The classic horizontal ones seems bad for private use due to noise.

It would be an interesting video to examine wind turbines applied to a dense, urban environment that has more shadows on buildings (decreasing solar power generation), but can produce "wind canyons".

@FUTUREDTECH

2 жыл бұрын

Great call out! What future technology innovation are you most excited about?

@-whackd

2 жыл бұрын

Downtown Chicago

I like your video. The roof ridge turbine is quite innovative. I will consider that design to go along with solar panels when building my house.

I think it makes sense to diversify your power sources, and the ridge based turbines look relatively unobtrusive. Think there's scope there for a mixed setup with solar panels on the same roof. There's nothing to stop you making a water turbine as well, if you have a small stream on your property. It all adds to your energy resiliance, and removes reliance on increasingly expensive utility providers.

Good timing, this weekend I did an introductory day for feasibility of domestic wind turbines. Turns out they are quite complex beasts! Anything other than reliable and stable airflow will result in lower power and premature wear and breakdown... Pretty much ruled it out for us... 😟

@SaveMoneySavethePlanet

2 жыл бұрын

Yea, I’m sure there are people who live in a canyon along the coast who could make great use of wind power, but I don’t think it makes sense for the majority

@FUTUREDTECH

2 жыл бұрын

Ai that is unfortunate to hear. What future technology innovation are you most excited about?

A small wind turbine to support solar seems like a good idea, especially if you're going off-grid or otherwise battery supported, it would help to increase the life of the batteries.

@utubeape

2 жыл бұрын

it also makes sense depending on your location

@ralphwarom2514

2 жыл бұрын

It's interesting that the conditions which make solar work less effectively usually mean wind is better. Rain, cloudy weather and night time usually mean high winds. At least where I live. Good to have more options.

@bassamkanj5144

2 жыл бұрын

@@utubeape kzread.info/dash/bejne/hXxnrbOoitnHlrA.html

@bassamkanj5144

2 жыл бұрын

@@ralphwarom2514 kzread.info/dash/bejne/hXxnrbOoitnHlrA.html

For many years I installed wind turbines and solar panels on sail boats. The turbine for a boat is basically an alternator with a blade. They are noisy and don't survive well. When a boat was damaged from a lightning strike or such, the owner always wanted the panels replaced but seldom or never wanted the turbine replaced.

hey!! I stumbled across your channel while looking at tesla solar roof tech, and I love your content! Very informative, thank you!

I'd like to have one that looks like a smaller version of the old water pump windmills, that would look like a nice lawn ornament while producing electricity. I've seen them put together by do it yourself-ers, with great results. Seems to me the smart thing is to get away from mass produced power and unreliable grids. No one can shut off your power if you're not on thier grid.

I'm still interested in wind. I intend to eventually move to Ireland, and all of my Irish friends and relatives tell me that it's very windy there. So I think a combo of wind and solar would make sense. Regardless of where I end up, I plan on getting a few of those Boxabls. They're supposedly energy efficient, so that will be helpful if even by a little. I was hoping something comes from Powerpod, but haven't seen much else from them lately. I may be optimistic, but I am going to do my best to live in a home that can be self-sufficient without sacrificing too much convenience.

@stevetennispro

2 жыл бұрын

You might want to keep an eye on VERTOGEN. It's a V.A.W.T. by a U.K. co. They have videos on KZread.

@FUTUREDTECH

2 жыл бұрын

That is an interesting! What future technology innovation are you most excited about?

@oraghallaigh4421

2 жыл бұрын

@@stevetennispro Cheers for that!

@mefirst4266

2 жыл бұрын

THERE YOU GO !!!!!!! HOW FAST CAN YOU GET YOUR FUCKING ASS OUT OF THE USA !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Yes! I especially like the ridge line blades.

I building in Taiwan built a vertical wind turbine in the 28th and 29th floors of a office building, where the is a constant wind flow. The turbine provides 15% of the buildings energy needs and mostly use to power the ac units saving over 3 million a year in electrical cost. Wind technology does exist, just not as sexy as strapping big reflective panels to your home and hoping they don't get damaged. There also a wind pod shaped like a ships GPS receiver the big dome things, it has energy potential of 15kwh a day, mainly used on ships at sea to provide energy for life support systems like AC/Heat and lighting. This takes off load of the engines reducing fuel consumption. I love Matt but if you really dig deep you will find that there are a lot of practical wind turbines in used in everyday applications.

What wasn't mentioned was that wind turbines (by themselves) do not require the more rare earth minerals like solar panels do (such as lithium). So construction costs won't be affected by material shortages. And, while dependent on your geographic area, might make them just as useful.

@gigabyte2248

2 жыл бұрын

'Rare earth minerals' is a term that's thrown around a lot, but I don't think many people actually know what it means. Technically, it refers to the lanthanoids, which *don't* appear in solar PV, but *do* appear in high-end turbines. Solar PV panels use silicon (the second-most abundant element in the Earth's crust, and one that we have half a century of experience refining to ultra-pure semiconductor grades), doped with tiny amounts of phosphorus (very prevalent, used in fertiliser), boron (easy to extract), arsenic (which is a pain in the arse, but not rare) and possibly aluminium or gallium. For the metallisation, they almost always use aluminium and copper (in layers around a micron thick, barely anything) and possibly even thinner amounts of transparent conducting oxide, like indium tin oxide (indium is pretty scarce, TBF) or zinc oxide. Definitely some weird and nasty stuff in there, but very little that's rare, no lanthanoids and no lithium (or any other alkali metals, keep that shit out of my cleanroom!). Wind turbines generally use steel and fibreglass for structural components. The best motors use neodymium iron boride permanent magnets, with ferrite magnets a long way behind. Neodymium *is* a lanthanoid, as is the 6% dysprosium that's added to stabilise the magnet. We talk smack about 'rare earth minerals' because lanthanoids are a pain in the butt to extract and refine. They're not particularly rare by abundance, but there are no minerals that contain them in the high quantities you see in, say, iron ore. When they do appear, you normally find all sorts of heavy metals rather than, say, just neodymium ore. As you painstakingly extract this low-concentration mishmash, you also end up with a lot of uranium and thorium. Yeah, pain in the butt. The only people brave or foolish enough to try to corner the market for lanthanoids are the Chinese, which just adds political turmoil onto existing technological unpleasantness. I'm not saying wind turbines are worse than solar panels (both are pretty f**king awesome), but know what you're saying before you make a mess on the internet.

Thank you for the interesting videos, Matt. It would be very interesting to hear about the combination of solar panels and a gravity storage tower for a private house or cooperative. Do such solutions even exist for small scales?

@Kvartsb

2 жыл бұрын

We have the means to quite easily generate the energy now but storing it in a good way, now that's interesting!

we have both solar and wind for 24v system at the airfield clubhouse, that charge a pool of AGM batteries, for us in the clubhouse it has been working good for 5 years. we use it for lights, waterpumps, chargingstation and so on. small small scale. the combo give us power all the year 24/7.