Offshore Wind in Crisis! What Can We Learn?

Рет қаралды 79,903

Күн бұрын

In the quest for clean energy, offshore wind stands out - not just for its towering turbines which are already as tall as the Eiffel tower and set to grow further, but offshore wind also stands out for its surprising economics. Despite being about twice as expensive as its onshore counterpart, offshore wind is riding a wave of rapid global expansion. What drives this surge in investment towards seemingly pricier energy? In this video we’ll navigate the depths of offshore wind. We'll uncover the innovations making these titanic turbines possible, explore why their energy is more prized, and dive into the tumultuous waters of 2023 that nearly capsized the industry. Can offshore wind chart a course towards a more sustainable horizon? Let's set sail to find out.
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Bookmarks:
00:00 Intro
00:54 How do turbines need to be changed to suit offshore environment?
01:24 Different types of support structure for offshore environment
03:39 Size
04:58 Corrosion
05:29 Reliability
06:05 Advantages & Cost Offshore Wind
07:13 Levelized Cost of Electricity (LCOE) of Offshore Wind
08:09 Offshore Wind in Denmark
09:27 Non-financial benefits of Offshore Wind
10:39 Value of Offshore Wind - Complementary Generation Profiles
11:21 Matching Generation with Demand
11:43 Offshore Wind in New York
12:08 Offshore Wind in Western Australia
12:51 Offshore Wind Crisis
Sources:
For data, images & graphs
www.sarens.com/about/news/win...
www.maritimejournal.com/indus...
turbines.dk/
ember-climate.org/insights/re...
www.renewableuk.com/page/UKWE...
www.ukri.org/news-and-events/...
www.reuters.com/business/ener....
www.linkedin.com/posts/aegir-...
www.wbur.org/news/2023/10/05/...
www.bloomberg.com/news/articl...
www.politico.com/news/2023/10...
www.energyvoice.com/renewable...
www.nsenergybusiness.com/feat...
Journals and Scientific Papers
www.lazard.com/research-insig...
www.researchgate.net/publicat...
www.mdpi.com/2071-1050/10/6/2....
www.researchgate.net/publicat...
www.mdpi.com/1996-1073/16/8/3404
The Engineering with Rosie team is:
Rosemary Barnes: Presenter, producer, writer
Javi Diez: Editor / javierdiezsuarez
Fatini Nur: Research and production assistant / fatinin

Пікірлер: 714

@robinwhitebeam3955 Ай бұрын

The UK imports about £100 billion of energy a year , so any energy produced in house has a large effect on the balance of payments and national debt.

@kenlydon1395 Ай бұрын

Don’t you mean “ electricity ? Bad English there , “electricity” is the product of power stations not “ energy” ,

@mellowmarkable Ай бұрын

2022 was an abnormal year though. In 2022, the UK spent about £63 billion on crude oil, petrol, diesel, and other oil-based fuels, with another £49 billion spent on buying gas. The rest was spent on imports of coal and electricity - making a total of £117 billion. In 2021, £54 billion was spent on energy imports, with £48 billion spent in 2019.

@chippysteve4524 Ай бұрын

As long as the poor get poorer,the Tories are happy.In fact,it's all part of their plan.

@terenceiutzi4003 Ай бұрын

That is why they are making the shift to Cando nuclear.

@alanwhiplington5504 Ай бұрын

@@kenlydon1395 It's probably the result of who he's been talking to. Most, if not all, European languages typically use the word 'energy' when talking about electricity production.

@ArthurDentZaphodBeeb Ай бұрын

Wow, so refreshing to get detailed explanations from someone who clearly knows her topic.

@narvuntien Ай бұрын

It is actually really amazing when I, here in Perth, explain to people how well Solar and Wind Anti-collorate, you see it click for people that have just not thought about it before.

@TimMountjoy-zy2fd Ай бұрын

Well the bad news is they don't anti correlate enough and even a few times matters. So lets say there are 30 days a year (its actually more) where Wind is low at night. The problem is you need enough backup to cater for those nights and the NEM (East Coast not WA) runs between 20 & 30GW on average so at night you can get Supply Gaps that are 15-18GW deep and in Winter last over 12 hours ie A shortfall over night of 100+ GW's.

@kylekleman Ай бұрын

Rethink-x has an excellent study on how to meet demand using wind, solar and batteries. Essentially you overbuild wind and solar so the amount of battery storage need is greatly reduced. By building 3-4 times your energy needs, the number of days where there isn’t enough solar or wind goes down dramatically. The few days where there still isn’t enough energy, you have battery storage for those periods. They show that this system will also be the lowest cost in 2030.

@johnzach2057 Ай бұрын

Batteries are getting cheaper with projections being they'll reach $50/kwh in the next 5-7 years. Nothing can beat producing your own electricity and storing it for using it at night.

@k0zzu21 Ай бұрын

@@kylekleman That is just way more expensive than a gas generator, let alone the waste of overbuilding. Maybe that would be viable with hydrogen or methane production from the excess production, but the batteries need to be used to make it economically viable. The other hidden cost is the load management. It gets exponentially more expensive when you reduce the amount of base production and replace it with variable production. Basically the low production days will become so expensive that it is economically viable to install the needed battery power while during sunny/windy times energy will be free or hold a negative price.

@user72974 Ай бұрын

@@TimMountjoy-zy2fd With battery prices coming down so much, and manufacturing of them ramping up so much, I can see battery energy storage facilities playing a role here to smooth out the lulls in production when the wind is not blowing and the sun isn't shining.

@TheRealSnakePlisken Ай бұрын

So, let me get this straight. Offshore wind will use oilfield tech to deploy massive structures in deeper waters and be serviced by men in helicopters which will cost twice as much as other available sources of energy for similar regions. Sounds like a winner.🏆

@aliendroneservices6621 Ай бұрын

On a sustained basis, the cost of wind (and solar) is actually *_infinite._*

@kilburn1313 27 күн бұрын

@@aliendroneservices6621 Planned obsolescence...?

@yngve2062 7 күн бұрын

Also, needs to be noted that a 5 megawatt wind-turbine uses 700 L plus per year for lubrication of the gearing parts.

@toend1 Ай бұрын

One of the most interesting video about windpower - thank you!

@budbud2509 Ай бұрын

I found it very interesting as well ...... However .... Huge solution to a virtually non existent problem

@theknowall2232 22 күн бұрын

Interesting only to confirm benefits of nuclear.

@SocialDownclimber Ай бұрын

Great video Rosie! Especially happy with your explanation of why offshore wind seems so popular despite its higher LCOE as reported in Lazard. The cute boat-Rosie animation was also great!

@EngineeringwithRosie Ай бұрын

Glad you liked that part, that was the main reason I made the video. I am constantly trying to explain that point in my regular job, thought making a video I could refer people to would be less repetitive!

@w8stral Ай бұрын

Well she Lied via omission. Where there is wind, there is no naval industrial presence anywhere else in the world outside of the North Sea due to presence of Oil and Gas naval assets for construction. This an gargantuan cost which is NOT tabulated. Best offshore in the world would be down around Patagonia... Guess what NO ONE is trying to build down in the HIGH wind sea zones of Patagonia which are FAR superior to ANY other region of the world other than Antartica? Wind Turbines is what. Also, no other region(edit I think Argentina Patagonia has some, but I forget their depth) of the world has shallow seas and High winds like the North Sea which automatically incrases cost by a presumed ~50% over that of shallow sea bases, so her stated 2X more expensive is an absurd joke anywhere not named NORTH SEA. Anywhere else we are looking at 3X-->4X cost of on land. Wind also must be present with copious quanties of NG. Other than North America, no one else has copious quantities of NG to balance the fickle nature of wind. Wind is a Northern Europe/Plains of USA and a couple other geographic regions rare phenomena(Mongolia, S. Africa, for instance or Patagonia) with maybe East Africa. E. Africa with the PErsian gulf close ~enough and its NG might work. China is via its Mongolian wind is hoping they can tap their very large hydro network, but even then their Capacity factor for their wind sits at ~24% via their own claims and this is with modern wind turbines. Europe/USA have ~34% capacity factor, but lots of OLD inefficient HAWT's and all their new installations usually hit 50% capacity factor using near identical turbines as the ones put up in inner Mongolia of China just as an example.

@robinbennett5994 Ай бұрын

It's a cute little boat, but as a sailor - it looks like it's sailing backwards! It looks like the artist copied the outlines of sails from a number of photos and combined them in a way that makes no sense and results in an 'uncanny valley' effect.

@JonathanMaddox Ай бұрын

@@w8stral I think you missed the point about being close to cities in small or densely populated countries with limited space for onshore wind. Patagonia and Antarctica have few or no cities, and plenty of space for onshore wind. I'll wager they never develop their offshore wind resources, however vast they are. Your point is well made that the North Sea has been the first place for offshore wind to gain popularity largely due to its established oil and gas engineering industry, with capital equipment in place and experienced workers. The same applies to the Gulf coast of Texas but there has been no offshore wind boom there because there IS plenty of space on land in Texas, and the wind boom has been onshore. Gas is certainly useful for offsetting the variability of wind generation, but so are solar and hydro. Gas is not a necessity, it's just the incumbent. For now.

@w8stral Ай бұрын

Uh, no, YOU miss the point, when NG is a SMALL fraction of the cost, why would ANYONE with a brain cell put in Wind Turbines? LCOE cost analysis NEVER adds in grid stability, making it a giant lie when you compare to begin with. Vast majority of the world has near Zero wind power potential. Wind potential is exceptional in its Geographically specificity. Same is true of solar. @@JonathanMaddox

@qbas81 Ай бұрын

Can't wait for the floating offshore one!

@cnocbui 18 күн бұрын

Neither can I, but probably not for the same reasons! Floating wind is incredibly expensive just to build, but 2 of the 3 projects so far have failed from a reliability perspective, I’ll use US$. There have been 3 commercial wind farms, Hywind Scotland, Kincardine (Aberdeen Scotland) and Hywind Tampen in Norway to supply their oil and gas rigs, LOL. H Scotland cost $10.97 billion per GW, it was established in 2017 and all the turbines are being towed back to Norway for a euphemistic ‘heavy maintenance’; a mere 7 years and the turbines are stuffed. Kincardine cost $8.9 B per GW, was commissioned in 2021 and had at least one turbine towed back to Rotterdam in 2023 for ‘maintainace’. H Tampen cost $8.49 B per GW and given it’s just been finished it’s too early to say how soon it will be till those turbines fail also. Bear in mind that those astronomical construction and maintain costs are for assets that only generate 54% of their rated capacity. To put that in perspective, nuclear power in S Korea has a 96% capacity factor.

@theunknownunknowns5168 Ай бұрын

I was told by a offshore gas worker in Taranaki that offshore wind will be good for his company, good for regional and national economy but super bad for the environment. His reason was the crane ship that comes from Norway to do maintenance is polluting. Then he proceeds to tell me the same ship is used by the fossil gas industry in Taranaki. This is otherwise a very smart person that has been programmed by the industry he works in, programmed to believe crazy.

@Ikbeneengeit Ай бұрын

"It is difficult to get a man to understand something, when his salary depends on his not understanding it."

@electricAB Ай бұрын

Wood it be inappropriate to suggest he might have been ‘gaslit’ I have also spent time in oil n’ gas in Taranaki and it’s a common & understandable blindness amongst people with a vested interest in the status quo..

@nescius2 Ай бұрын

@@electricAB agreed, if by understandable you mean disgusting.. i am somehow thinking that those claims like _salary depends on his not understanding it._ just normalize that disgusting behaviour.. am i wrong?

@contraplano3157 Ай бұрын

Do a elétric vessel

@PifflePrattle Ай бұрын

@@electricAB No it *would* not be inappropriate to suggest he might have been gaslit.

@xxwookey Ай бұрын

That's an impressively information-dense 16 minutes. Thanks for a comprehensive summary delivered in a thoroughly balanced manner. You are becoming a national, if not global treasure :-)

@EngineeringwithRosie Ай бұрын

Aww 😊

@trueriver1950 Ай бұрын

True. An international resource, given that you started out with videos created in Denmark when you were working there. I still remember your one where you made a working wind generator out of cake. 😊

@ernieterry7384 Ай бұрын

Never points to the bad side such as propeller coating with sea spray, damage to the marine/mammal life world wide and the number of whales beached since these wonderful 300 mtr towers were forced into the sea bed.

@EngineeringwithRosie Ай бұрын

@@trueriver1950 still my favourite video!

@theunknownunknowns5168 Ай бұрын

Every Kiwi who was around in the 80's knows of the Freemantle Doctor. Even if they have never been to Perth.

@LawpickingLocksmith Ай бұрын

Yeah because of Wellington is windier.

@simonabunker Ай бұрын

Americas Cup?

@trueriver1950 Ай бұрын

@@LawpickingLocksmith hey: are you related to lock picking lawyer? Just wondering, seeing your handle

@JMWflicks Ай бұрын

Thanks Rosie. I really appreciate such a thorough explanation by someone who really knows what they are talking about, and cites sources of information. As a retired Aerodynamicist, I have a reasonable understanding of the physical generation of power from wind, and with long experience of stability augmentation of flight control, the automatic control of a turbine and generator is also well understood. But the civil engineering, economic, oceanic, and weather spects that you brought out are real eye-openers to me.

@theknowall2232 22 күн бұрын

She does not know what she is talking about, she is ignoring the nuclear option. Wind is not a 'renewable' energy considering the cost to repair and replace.

@Richardincancale Ай бұрын

According to UN statistics around 40% of the world’s population lives

@tonydeveyra4611 Ай бұрын

There is a system called biorock reefs, basically uses a very low voltage current that causes calcium to precipitate out of the seawater and form a layer of minerals on rebar that is basically food that supercharges the growth of corals and shellfish. I've been obsessed with the idea of that being deployed on the underside of offshore wind turbines so that offshore wind farms also become massive biodiversity hotspots full of coral reefs.

@justforthehackofit Ай бұрын

These pilons after some years in operation get cleaned to prevent exactly that growth to occur, as that would increase shear. To avoid increasing risks of failure, those pilons would need to be a lot heavier, and more expensive. The anti-scouring protection at the base can serve as building blocks for ecosystems, and if you choose materials wisely, they may over time counter the harmful acidification process that results from the absorption of CO2 from the air into the sea.

@trueriver1950 Ай бұрын

Depends what the structure is, I think; and also the strength of the local ocean currents. The main shear stress would seem to be too come from the wind on the turbine, which is a huge force multiplied by a massive distance, this making a huge overturning moment. In contrast the water forces are probably lower, and certainly close to the base, leading to a lower overturning moment. But I'm a physicist, not a wind power engineer, and is love to see Rosie's view on this. It's alreaydy possible that i may be mistaken. (AM i allowed to say that in a you tube comment?) I remember reading that oil rigs add to bio diversity by being a place for various things to grow.

@bjorngve Ай бұрын

A question to the Engineer. When calculations of cost/MWh are made. Does that include how long they will last? Today a Nuclear power can very well live on for 80 years, tecnicaly for ever since every components can be swapped out in many cases. And better design is coming all the time. A wind farm live for 25- 35 years. In reality much less. Then it has to be demolished and replaced. So you have to build the wind farm many times as the reactor keep running. Costs of maintenance has to be included. But do they consider cost of grid building is much higher for the wind farms then the nuclear plant. And then you need baseload for the grid. And you need additional power often fossils when the wind or sun is not there. In Sweden we have long cold winters, not much sun or wind the coldest period and then the need for energy is peaking. So you get additional casts for wind and sun. And finally nuclear tend to deliver over 90% of running time. Wind and solar obviously much less. Resulting in energy when no one need it and no energy when needed. Toxic waste in nature from the blades, dead birds and big impact on nature is other wind energy-costs. The wind-solar alternative come with a terrible need for area and material, when a nuclear plant is very much the opposite. My impression is that calculations are maybe not made with realistic data. Politics often sounds very naive when speaking or at least very biased. Making bad investments is just bad, and we see a lot of that. And no atoimc waste is not a big danger, and it is relative very safe. The use of coal is killing so many more, right? We must see things for what they are. If we wan't to do good. .

@elbuggo Ай бұрын

For every windmill, they need a full backup system to produce when the wind isn't blowing. So you really need 2 systems. For a nuclear plant, the grid will cost about the same as the plant. For windmill farms and distributed production, the grid will cost twice as much as the windmills. Windmills at sea will probably last less then 10 years. China is burning 4.5 billion tons of coal each year - what about that? Anyway, the ocean will eat all excess CO2 anyway. We are dealing with a rediciliouss doomsday sect here - don't try to make sense of anything.

@JHawkins-jf6bs 21 күн бұрын

The timescale for finance and implementation is a critical problem for some nuclear power in Europe. Perhaps the offshore electrons can be seen as a bridging supply technology before other fabled systems appear at commercial scale? Fusion, Thorium reactors etc...By the next century (if humans ever get there) the polar regions may become colder and drier overall due to the slowing global sea currents (currently observed), the tropics possibly uninhabitable in parts. The CO2 hangs around a long time: 'Once it’s added to the atmosphere, it hangs around, for a long time: between 300 to 1,000 years. Thus, as humans change the atmosphere by emitting carbon dioxide, those changes will endure on the timescale of many human lives'. science.nasa.gov/earth/climate-change/greenhouse-gases/the-atmosphere-getting-a-handle-on-carbon-dioxide/

@elbuggo 21 күн бұрын

@@JHawkins-jf6bs RE: CO2 hangs around a long time That's pure hogwash. The air is in chemical equilibrium with the ocean. If we doubled the concentration in the air by tomorrow, most of this doubling would be eaten by the sea within 1 year, and almost all (98%) within 5 years. If we remove all CO2 from the air tomorrow, most will be back within 1 year, and 98% within 5 years. The ocean is leaking CO2 as hell, but when the pressure between the air and ocean is in equilibrium, the leak will stop. If the pressure in the air is higher, the ocean will immediately start eating CO2. We do not have a CO2 problem whatsoever. It is pure fantasy. No CO2 problem whatsoever in any case.

@isovideo7497 12 күн бұрын

Solar power, when used as agrivoltaics, removes much of the land area conflict.

@scottmuench6855 Ай бұрын

Such a thorough job of presenting this important topic, and your graphics make it easier to follow - great job!

@blissdelavie3009 Ай бұрын

Brilliant video, concise, clear, interesting... look forward to more.

@deanfielding4411 Ай бұрын

I can’t help thinking that some of the reason that the offshore projects failed was just because they wanted a slice of the pie of the higher electricity prices.

@user-xq1wz3tp5z Ай бұрын

It (recent abandonment of some offshore projects) was mostly a result of inflation surge, and supply issues for materials. The projected costs assumed that the trend line of decreasing prices for offshore wind would continue, which did not occur ... so substantial cost overruns loomed menacingly.

@ryuuguu01 Ай бұрын

I'm interested in Japanese offshore wind so I am looking forward to the floating turbine video.

@dennis2376 Ай бұрын

The problem with off shore wind power is visual pollution and like their land counterpart they can not be recycled. Thank you.

@thewheelieguy Ай бұрын

True the blades are not recyclable, but just about every other part is. Vestas the wind turbine manufacturer claims their different models are 80 to 86% recyclable.

@jdillon8360 Ай бұрын

Build them far enough away and you can't even see them. Also, many people find them beautiful. Not everyone thinks they are ugly. I'd certainly rather look at wind turbines than cooling towers of coal and gas plants.

@user-xq1wz3tp5z Ай бұрын

Concerning visual aspects... It is prudent to build a lot of this stuff, but Do Not build continuous expanses. That is, allow considerable visual Space between components of the arrays, so that those who resent the turbine arrays can look seaward 'here and there' without viewing an endless image of windmills.

@budbud2509 Ай бұрын

What about the Whales ?

@dennis2376 Ай бұрын

@@budbud2509Indeed and the other wild life.

@jdcjr50 Ай бұрын

Thank you for clearing that up for me.

@fishyerik Ай бұрын

Could it be meaningful to rinse off salt dust periodically to reduce corrosion? I mean, as long as the nacelle is well over 10 meters over the sea level a vacuum pump and a cold trap is all that would be needed to distill water. And when air temperatures up there is well below the ocean water temperature no external energy would be required to power the distillation process.

@harveytheparaglidingchaser7039 Ай бұрын

Very clear explanation and slick presentation. I would love every village to have a sandbattery and district heating linked to renewables

@nc3826 Ай бұрын

Rosie, Hope the subsequent Floating Platform Offshore Wind post. Will include a section on the possibility of it also generating electricity from secondary power sources, such as from wave energy, not only from wind? Which would also reduce the correlation of the power output. Increasing its marginal value. And reducing the need for storage for the grid. Seems like a natural synergy. That would also reduce the need for energy storage for the grid. Has a submerged floating island, as a platform for numerous wind turbines, ever been considered or tried? Possibly out of a calcium carbonate CO2 sequestering, air infused material? Seems like it would also have environmental benefits too, in terms of attracting sea life too?

@cybertrade7908 23 күн бұрын

So, in the USA consumer electricity costs £0.17 (GBP / KW Hour). In the UK the consumer electricity costs £0.45 GBP/Kw Hour). So as the UK adds more and more off-shore windmils (way above the 'average country'), the unit cost of electricity, to the consumer, keeps on increasing. Many businesses have had to leave the UK because of uneconomic electricity costs. This has reduced the number of highly paid jobs and injected serious structural weaknesses into the economy. It looks like the UK tax payer is heavily subsidising the offhore wind industry, at considerable cost.

@warwick.schaffer Ай бұрын

I am interested in the cost comparisons per megawatt hour that you showed but the resolution was a bit low to see at least of my phone. I wonder if you could add a link to that graph in your description or let us know which one it is of your many references, which are great to have by the way. I'm kind of interested to know how these renewable costs compare to traditional energy. for example, the 70 pounds per megawatt hour from offshore in the UK to coal, hydro, nuclear etc. also, I wonder how these costs translate to what a consumer pays. can you just divide them to get the consumer price in kilowatt hours? finally, are the economics of these projects factoring in subsidies like carbon credits?

@daveh6356 Ай бұрын

Thanks Rosie. Looks like the 'economical unsustainability' of offshore wind is just a commercial glitch. I was thinking recently about when offshore wind blows (largely driven by sunrise/sunset?) and how it aligns well with domestic consumption, which should reduce the demand on storage. Maybe the LCOE should be commuted to the consumer cost to factor in aspects like storage & even energy supplier markups (which home generation doesn't have).

@timfallon8226 Ай бұрын

Wind power is great as long as you like unpredictable electricity that costs a fortune.

@aliendroneservices6621 Ай бұрын

Wind doesn't cost a mere fortune. Wind, like solar, is *_infinitely-expensive,_* on a sustained basis.

@sdavidleigh6642 Ай бұрын

Terrific as usual. This stuff is so important as we heat up from carbon burning. Lead time is needed. The little goofy sail boat could be better but we can't have everything. 😀

@goldenshatter Ай бұрын

No we need fusion and now not polluting the ocean with more oil trash.

@mikemellor759 7 күн бұрын

Rosie, that was an exceptionally clear overview of all the issues involved in offshore wind. Thank you! 👏👏I’m looking forward to your episode on floating offshore wind!

@andoser7836 Ай бұрын

Thanks Rosie, really informative. It would be very interesting to see the comparison of dollars of energy generated between onshore and offshore wind turbines given the production graphs you showed. Especially given the massive daily price fluctuations.

@GonzoTehGreat 18 күн бұрын

This channel is a great find. Thanks for making such informative and well presented videos. Subbed! 👍

@John.0z Ай бұрын

Thank you for a clear presentation Rosie. How will the ever-rising cost of land in Australia affect the choices between offshore wind and all forms of on-shore power production?

@NaumRusomarov Ай бұрын

Outstanding informative video. I’d love another video about floating offshore wind.

@w8stral Ай бұрын

Other than it not being true: Only offshore wind is in Europe in VERY shallow seas, with base mounts which are NOT present anywhere else in the world other than a reef somewhere maybe. Using Lazards GUESS is absurd unless you think you can get away with it as you are talking to complete ignorants on the topic. Also the oil and gas offshore infrastructure is right there in the North sea whereas VAST majority of coast line where there is wind will have ZERO or near zero naval capability to build in the ocean with the sole exception being the Gulf of Mexico, or Persian gulf, both of which have ~zero wind so one CANNOT double use the existing infrastructure defraying costs. Offshore therefore is ALWAYS projected to cost at MINIMUM 3X if not 4X onshore anywhere else in the world not named(North Sea). Its a joke.

@adityac3239 Ай бұрын

@@w8stralEast and Southeast Asia has pretty good capacity for steel fabrication and ship building. With fixed turbines already a common sight in Taiwan as the first mover in Asia and in progress for Vietnam and Philippines. Japan and Korea only have small area for fixed base but they're already starting, their big rollout however has to be floating due to water depths

@NaumRusomarov Ай бұрын

@@w8stralcry me a river.

@davidmartin3947 Ай бұрын

@@w8stral ' Only offshore wind is in Europe in VERY shallow seas' If you wish to make absolutist claims, check your data: ' The 11 Siemens Gamesa 8.0-167 DD wind turbines will be moored at a site 140 km offshore where winds are consistently stronger in water depths of up to 300 metres.' This is Hywind's floating turbine array. It is admittedly modest, but so is everything initially.

@w8stral Ай бұрын

You just made my point for me.. Only in very shallow seas with oil and gas infrastructure all around saving half the up front cost and they have great wind resources. No other region of the world has this other than Patagonia minus the naval assets. And those 11 turbines are a trial to see what the costs are as they have no idea. Claiming they will be great and cost effective is a nice joke. Good one. @@davidmartin3947

@garysmith5025 Ай бұрын

Slightly odd to put the UK in the category of countries not as blessed as Denmark with offshore wind resource when its coastal waters typically experience 10%-15% higher average wind speeds.

@EngineeringwithRosie 13 күн бұрын

yes that's fair, UK is pretty blessed also!

@TheyCallMeNewb Ай бұрын

That Perth afternoon wind is very often lacking. There is little certainty around the Fremantle Doctor -- and it can make for a night of wretched stagnant heat.

@amosbatto3051 Ай бұрын

Yes, a lot of grid storage will need to be built for 100% renewable energy to work, but the price of LFP batteries is dropping like a stone and they should last for 10,000 recharge cycles (i.e. 30 years).

@user-xq1wz3tp5z Ай бұрын

@@amosbatto3051 Bill Gates Breakthrough Energy backed a company which is making batteries suitable for stationary utility service, based on technology from Stanford U, which costs ~ 1/5 the price of lithium ion batteries (as of 2022). Lithium is best present option for automotive/transport use, due to low density of lithium.

@ruanbarnard3710 Ай бұрын

Thank you for the informative video.

@ericplace367 Ай бұрын

Very helpful, thanks

@mauricioweber8879 Ай бұрын

Rhorough and knowledgeable. Thank you

@SkyPaul787 Ай бұрын

Thank you Rosie!

@kierank01 Ай бұрын

1:35 Kettle of fish....that's got to be a deliberate reference

@nhikoid Ай бұрын

Excellent as always

@sebastianputzke7705 Ай бұрын

Offshore wind has the benefit of working as a transition option. Infrastructure, like ports and ships and workers can be repurposed from fossil extraction to building renewables. And the inherent "big project nature" with centralization, large investments, complex legal matters is perfectly tailored for those companies that previously build coal, oil and gas plants.

@thamesmud Ай бұрын

Transition to what?????

@budbud2509 Ай бұрын

@@thamesmud Poverty ? With my fuel costs doubled to solve a non existent problem ......

@jdillon8360 Ай бұрын

Another great video Rosie. Very informative. It's such a shame to see this resource not yet being taken advantage along the Victorian and NSW coasts. Concerted anti-wind farm campaigns from big and small media and local NIMBYs are really disappointing. Hopefully this all gets resolved soon and we can start producing clean energy from offshore wind in Australia.

@benjaminlamey3591 15 күн бұрын

Rosie, you may forget that the on ground grid may need to be reinforced in the area where the power from the Offshore wind parks arrives on ground, and there is usually also a need for a converter from DC to AC current. it is usually not part of the price for installing a new wind park, and not in the cost by teh company, this lies on the public distribution and will anyway be paid by the end user. Is there really a business case for offshore wind with fondations deeper than 60m ? this was one of the limitations highlighted in a wind farm in south west france, where there was a huge debate to move it further out of a marine protected area. engineering company did not want to go further and agrued with a technical limitation.

@stephenbrickwood1602 19 күн бұрын

Love your work and integrity 👏 👍 😊

@randydutton1 Ай бұрын

Cost per kWh should be based upon 'feed in', not 'produced' or 'capacity'. A lot of green energy is sent to ground because it doesn't match need.

@elbuggo 21 күн бұрын

Well, who should pay for production when the wind isn't blowing? We need energy/electricity even when the wind isn't blowing or the sun isn't shining. Who should produce then, and who should pay? We need to pay for all 3 systems?

@CrusaderSports250 Ай бұрын

An interesting look at on and off shore wind power, the idea of floating arrays is interesting, obviously each one would need it's own pontoon, and for a large generator you would need a suitably large raft, just how big a raft would be good to know, also how the blades react to the "gusting" effect as the mast sways in the wind and waves, engineering problems you never get on a fixed site.

@randydutton1 Ай бұрын

To reduce corrosion, why not use Bell Lab's 'Intercept Technology' to sacrificially remove corrosive ions from trapped airspace?

@poporbit2432 Ай бұрын

Can a mirowave beam be applied to transmit energy ashore to reduce installation and maintenance.

@richardkaz2336 Ай бұрын

simple and succinct answer. No!

@EdwinaTS Ай бұрын

Microwave is not an efficient way of transmitting energy, and it is very dangerous especially when there are so many turbines transmitting. It is like everyone operating their microwave oven without the shielding door! Metals and oil and water in their path would heat up to beyond boiling point!

@tomschmidt381 Ай бұрын

I had not realized how well Offshore wind complements other renewable energy sources. Here on the East Coast of the US offshore has also encounter NIBY opposition.

@joehopfield Ай бұрын

I've scuba dived an oil drilling platform near Los Angeles - eye-opening to see that each is an underwater skyscraper in a hostile environment. Daunting. (Correlation MUST be added to LCOE!)

@sapentium 22 күн бұрын

So here in Ireland we have the most expensive electricity in Europe....that's what happened when you have to build and maintain two generating systems the so called renewables and the fossil fuel plants..

@iantag Ай бұрын

Your parting comment regards supply chain, training and port facilities has a huge bearing on the proposed offshore deep-water Hunter 5GW project. The ability for Australia to manufacture the bases/towers and assemble these units in (say) Newcastle would be staggering in terms of: Steel needed ( e.g. 4000 tonnes per unit (Up to 350 units needed for 5GW). Supply chain vessels simply don't exist in Australia - so we'd need to compete in a 'hot' Asian market, the lay down space needed in Port to construct these things ( each one needs a football stadium size to construct a unit) - further complicated by the fact that Newcastle Port is privately leased (coordinated effort?). The reality - is likely that they will be built internationally (Indonesia/Korea/Singapore and simply towed into place with international crews and commissioned by these same crews). Note may of the Scottish floating units were towed, fully assembled, from Portugal. Lastly - going from 0-to-5GW in one project makes no sense - you need a staged and planned sequence of steps - as opposed to the many 'Captain calls' we seem to experience. Hunter offshore wind is Technically doable - and transformational for the local industry if carried out by a smart country (Luck only goes so far). Alternatively it may be a cheque book exercise to sail them in from O/S. I too, look forward to more episodes.

@malbrownie Ай бұрын

Hi Rosie, you make great videos, I hope your consultancy does well. You deserve it. Just one thought I had. I have heard the Fremantle Doctor was actually the Fremantle Docker as it was useful to dock ships that had sails and no engines. Obviously from a time when engines were not available. I don't live in WA and have no history on this but being 65, I know the English language can change. Anyway, well done with your KZfaq channel.

@user-ks3ol3lw3b Ай бұрын

Electricity - and its cost - is at the heart of modern industrial economies, and the backbone of our lives. Whenever you hear 'well, it is more expensive, but ...' , stop and think. We, all of us, have budgets. If we pay more for electricity, we have less available for everything else. It's not just what we pay for electricity in our homes. When businesses pay more for power, they have to raise prices. That includes hospitals, electric train lines, airports, and commercial office space. And of course the government - they have electricity bills too. So every one of us - including the poor and working class - have to do without something to pay the increased price of power. When are we going to hear about what people will sacrifice to pay for wind power?

@waynecartwright-js8tw Ай бұрын

In the UK Aldi supermarkets are the cheapest and have PV on the roof. After its returned its installation costs how much is the electricity? My home PV has paid for itself. All new infrastructure is expensive due to up front costs , in 2011 the UK grid needed £100billion spent but was underfunded because it over inflates prices. Its just another market to manipulate for profit.

@markthomasson5077 Ай бұрын

Excellent…as ever. One correction, to most of the east of Denmark is the Kattegat, not Baltic.

@KF-bj3ce Ай бұрын

Thanks Rosie for this excellent video, it must be a job to gather all the information, statistics etc. I do understand that using natural resources is smart and beneficial, I love solar Panels. What about cost per kW including total life span, maintenance, replacing, power distribution and the impact there off and or decommissioning. What about the environmental impact due to protective coating bleeding and other pollutants in to the sea. What about effects of altered wind loads, like an unusual storm. Your cost comparison chart does it consider all these facts? How does this compare to Nuclear base load generation, perhaps one on the East Coast, one in the Middle and one on the West Coast also taking all costs in to consideration? And which technology can be manufactured, build, maintained and operated in Australia by Australians? Is there any one out there that could give us an honest technically true answer on this? I cant say that answers as such on any project to that extent have ever been been presented to the people. But I do hear crazy politicians say we get it from America, England, France, Germany or Spain. Is this because we are a Banana Republic? Is there some way that Australia could ever become a nation that has skills to do these things and many other technologies that we import by the truckload?

@amosbatto3051 Ай бұрын

There are environmental issues with drilling into the ocean floor beds for the support structures, but they protect the area from trawlers so offshore wind is better for the environment, and offshore wind has ths lowest GHG emissions per kWh of any type of energy (11 g CO2-equivalent per kWh according to IPCC AR5) The offshore wind turbine industry is highly concentrated in the West with just three manufacturers (Vestas, Siemens Gamesa and GE), and I don't think that Australia will accept Chinese manufacturers, so Australia has to convince one of those 3 companies to build a factory in Australia if it wants local production.

@KF-bj3ce Ай бұрын

To@@amosbatto3051 Thanks for this information. It would be good for the political parties that propose such energy plans to actually summarize all of this information. In relation to Trawlers, true however I would not consider this a point for building but an added benefit when all the other factors line up.

@markbrennan6684 Ай бұрын

This all sounds fine. So let’s start by ridding ourselves of the euphemism windfarm. Let’s call it what it is, an offshore wind driven power station. Let’s get assurance that the components from mining to manufacturing are produced with no carbon emissions, slave or child labour. Installation and disposal of components with no damage to the environments we are doing this to protect. Finally, let’s see some politicians, particularly the Australian Teales put their money where their mouth is and advocate installation of these offshore from their own electorates. Given these simple expectations, I’m behind this 100%.

@mdombroski Ай бұрын

None of that can be done without emissions.

@bearcubdaycare Ай бұрын

It seems to me that a quantified way of comparing the demand by time of day, with the production by time of day, is pretty essential to have conversations that are productive. LCOE seems like a nearly useless measure, when talking about renewables (or any source that you can't turn on or off at will...but that's essentially renewables).

@ajward137 Ай бұрын

How does the cost/benefit equation change when (as is certainly planned in the UK), large amounts of grid storage comes online and the benefit of having power available at just the right time becomes less important? Of course battery storage doesn't actually supply any nett energy - but surely it affects the costs in a good way.

@kenoliver8913 Ай бұрын

From the grid's POV a battery is just another form of pumped storage (pumping electrons in this case) .Yes, if you have lots of wind and (especially) solar then you will need lots of batteries, as well as (cheaper per watt but much slower and trickier to build) pumped hydro storage. But the price of batteries is still nosediving (CATL - the world's largest battery maker - says their wholesale price will HALVE over the next 18 months!) so we may be able to build a renewable grid even cheaper than we thought.

@qbas81 Ай бұрын

One comment about the USA - they can't use European ships to install wind turbines there as ships have to be built in US (quirky old law) - which also delayed projects.

@lylestavast7652 Ай бұрын

It's called the Jones Act of 1920.

@user-xq1wz3tp5z Ай бұрын

U.S.A. should lose the Jones Act. At least initially, allow those robust Europeans demonstrate how their investments proved offshore wind affordable.

@otto_schwarzkopf Ай бұрын

For cost reduction I am interested in how Marine Power Systems floating technology will progress the industry. They seem very busy getting contracts currently.

@Ikbeneengeit Ай бұрын

Great video thanks.

@normnicklette5694 Ай бұрын

Hi Rosie, are there any options for practical domestic wind options? I believe that this will provide more generation when the solar is not generating? Solar connected batteries would not need to be used as soon as the sun goes down!!

@EngineeringwithRosie Ай бұрын

In short, no. And slightly longer, there never will be because of physics. The wind on and around buildings sucks. The detailed explanation is in this video on urban renewables: kzfaq.info/get/bejne/g7iCeK2LybilaJs.html

@normnicklette5694 Ай бұрын

Thanks for the response and I have just watched your video on urban wind generation.

@tlangdon12 Ай бұрын

@@normnicklette5694 The focus in urban areas needs to be on solar PV for electrical needs and capturing heat for heating needs. Solar PV panels sit unobtrusively on top of most structures and using other large surface areas such roads to gather heat during the summer and stoing it underground where the natural insulating properties of the earth mean that it can be store until it is need in the winter then accessed using heat pumps is the best way to source the heat needed to heat our homes.

@kenoliver8913 Ай бұрын

@@tlangdon12 How well that approach works depends critically what part of the world you are in. In sunny Australia (Rosie's and my country) a predominantly solar grid is a complete no-brainer. North America and northern Europe needs a more balanced approach.

@matthewbaynham6286 Ай бұрын

I've heard that you can have floating solar attached to an offshore wind turbine, would that reduce the cost per KW for projects to make it competitive against other renewable competitors?

@Cainjaa17 Ай бұрын

I appreciate all the nautical puns that surfaced throughout the script!

@thewheelieguy Ай бұрын

Interesting with the anti correlation and capacity factors and daily variation of kwh prices. The supply side of the market has fully moved to variable pricing even where the retail side hasn't.

@vevenaneathna Ай бұрын

imo another advantage that onshore wind has is its ability to be closely located to hydroelectric storage. hard to beat pumping water up a hill., especially here in the US's PNW where a lot of our dams are pretty north of the equator, solar coupled with dams doesnt make as much sense as say in china with their 3 gorges dam which i believe has a crazy amount of solar power which makes it run backwards more than one would think. offshore wind also seems like it is at a bit of a disadvantage in the setting of national security/war where i would expect off shore farms to be easy targets at a time where fossil fuels would likely be at a huge premium very comprehensive video. recently was driving through an agriculture area and saw a wind turbine spinning out of control likely to do a malfunctioning break. made me think twice about the safety of wind. that and the fire in the EU. pretty rare events all things considered

@JakeShaft85 Ай бұрын

In Sweden region 3 and 4 had an average price of 0,64SEK/kWh. In the same period windturbines sold electricity on average for 0,26SEK/kWh. Atleast here too many winturbines produce electricity when demand is low while beeing aunable to produce while demand is high. There were days when price was 8SEK/kWh and windturbines produced 0 electricity. Meanwhile when winturbines produce electricity the national production goes up 20% and price drops to levels where it's not profitable to operate them. Here discussions about windturbines is if any of them are profitable at all (here).

@sebstott3573 Ай бұрын

Superb video. I still don't fully understand how cost is such a barrier for offshore wind (or onshore+stotage) when electricity from coal, nuclear or gas peaker plants is more expensive, even before considering the externalities of climate and air pollution, which for coal in particular are huge.

@TimMountjoy-zy2fd Ай бұрын

Lazards figures are based on NEW builds. Now if you already have a Coal Power Station sitting on top of a Coal mine then the cost to produce is far far lower as the capital cost has been paid off. I think Lazards do cover this in a few figures and its down at $ 24/MWH ie Very cheap and very reliable. The Renewables are cheaper than Fossil Fuels comment uses Lazards and like with like ie New Builds. A different debate when replacing existing already built Power Stations.

@sebstott3573 Ай бұрын

@TimMountjoy-zy2fd For sure the internal cost of maintaining existing coal power plants is lower. But we're still building new coal, gas and nuclear plants around the world, which makes me wonder why the cost of offshore wind is such a stumbling block. Plus, according to Our World in Data, there are 25 air pollution deaths per TWh from coal electricity. If you assume the value of statistical life is 10 million dollars (a standard economic figure), then the external cost due to air pollution alone (not including climate change or running costs) is about 250 dollars a megawatt hour.

@nathanwhear4377 Ай бұрын

Hi Rosie, love your videos, I am a mechanical engineer with experience in the service engineering department for Siemens gamesa, looking to migrate to Australia, are you able to provide a recommendations for a mechanical engineer/project manager to apply for Australian renewable companies?

@EngineeringwithRosie Ай бұрын

Yes I do hear about roles like that from time to time. Can you connect on LinkedIn, then I can share roles I find. Write a message in your connection request so I don't miss it.

@davidmartin3947 Ай бұрын

Thanks for the info, as always, Rosie. I would like to draw your attention again to the potential use of basalt fiber, which you say you have not much considered, and which has attributes which are especially well suited to marine environments, not only being stronger than glass fiber, but very resistant to salt water corrosion. ' Research on fatigue performance of offshore wind turbine blade with basalt fiber bionic plate' by Zheng, Zhao and He is very apposite. Also it seems that basalt fiber can be recycled very effectively: ' Recycling Process of a Basalt Fiber-Epoxy Laminate by Solvolysis: Mechanical and Optical Tests' ' Breaking tenacity of the recycled basalt fibers is kept up to 90.5% compared to the virgin ones, while, with a pyrolysis treatment, this value cannot exceed the 35%'

@amosbatto3051 Ай бұрын

How heavy is basalt fiber compared to glass fiber? I think the problem is the support structure and base of the towers in a salty marine environment.

@EngineeringwithRosie Ай бұрын

What do you want me to do with basalt fibre? I don't make wind turbines myself.

@davidmartin3947 Ай бұрын

@@EngineeringwithRosie ?? Now you have completely lost me. Your bio says that you are developing and consulting in clean energy production, with especial reference to wind turbine tech. How is the choice of materials not germane to that, or their characteristics with especial reference to the marine environment? And since you have produced a whole video on recycling wind turbines, especially the blades, how can the potential reuse enabled by a different choice of material not be relevant?

@davidmartin3947 Ай бұрын

@@amosbatto3051 My reply got killed by spam filters. Basalt fiber is in between e-glass and carbon fiber for strength, broadly comparable to s-glass. The problem of salt water affects every part of an offshore wind turbine, including for instance the electric engine and nacelle, as well as the blades etc, not just the base.

@dzcav3 Ай бұрын

What is the COST of basalt fiber?

@myparadiseonbantayanisland9030 Ай бұрын

How about cost of wind vs natural gas, coal and nuclear?

@aliendroneservices6621 Ай бұрын

Wind and solar are infinitely-expensive, on a sustained basis.

@dannmarks Ай бұрын

I know this is an aside ecological benefit of these wind mills is that they are breeding grounds for undersea habitat. I would assume fishing in these areas would be limited and also fish fish breed near sea floor interruptions. I am not sure if the interruptions are enough in them selves due to my lack of knowledge on the specifics. But any areas protected are a boon to the natural wildlife.

@ecoideazventures6417 Ай бұрын

I am wondering what is more bewitching - Rosie's smile or Rosie's knowledge?!

@mdombroski Ай бұрын

Way to put a happy face on expensive unreliable energy.

@srb1855 Ай бұрын

Rosie - what do you see as eROI for onshore versus offshore wind?

@johnfrancis4401 Ай бұрын

Off shore windfarms are good for fish. Trawlers cannot operate in these areas.

@chippysteve4524 Ай бұрын

Yep and the structure below will be colonised by seaweed and shellfish,etc.

@gregoryclifford6938 Ай бұрын

OK for recreational fishing, I hope. @@chippysteve4524

@SamuelBlackMetalRider Ай бұрын

Never thought about that!! That’s good then! (I’m vegan)

@Nada-Mal Ай бұрын

I was literally on a repair job in a north sea wind farm between the UK and Netherlands because a trawler damaged one of the subsea power cables. It took 7 weeks to complete the repair. Our vessel was $100,000 per day and burned 20 cubes of heavy fuel oil per day. We also had a mass flow excavator come in on another vessel at the end of the job to bury the repaired cable omega loop. Multi million pound repair all because of one trawler who's trawl doors caught a cable that had came out of burial.

@johnfrancis4401 Ай бұрын

@@Nada-Mal Wow. I hope the trawler was fined

@marcariotto1709 Ай бұрын

Thanjs for some great info and some not so or omitted info. When fracking hit the American market the power gen industry was gutted. We lost a lot of nuke stations and dirt cheap baseload coal plants that just couldn't compete. I don't think that you can in good conscience compare costs or market segments without including these facts or the cons of NG and other generation resources. It's all rather too complex and dynamic to sum up in any short video format.

@caseydbani1419 Ай бұрын

Great insights delivered in high speed! Only Rosie can be watched at 1x speed :-)

@pixelpusher220 Ай бұрын

I wonder about adding gearing to turbines. Perhaps the forces are just too high, but by using a concept of even a 3 speed gearbox, you could significantly increase the safe operational wind speed

@EngineeringwithRosie Ай бұрын

Most onshore wind turbines have gearboxes, most offshore don't. The reason is mainly reliability, the gearbox needs more maintenance than other components which is expensive offshore so they mostly avoid it.

@aacowboy12 Ай бұрын

well Rosie nice explanation i like how you demonstrated the technology bud a change is coming with heppolt wind turbine. we just finish our least test, and we can now say with confidence that we can produce 14000% more energy on a sq mile. Then the existing wind turbine installation on land.

@kenoliver8913 Ай бұрын

A clear violation of several laws of physics - you are either lying or being lied to. You have more chance of building a perpetual motion machine. Why don't you watch Rosie's post on the theoretical limits (ie the Betz limit) of ANY wind turbine?

@4drops Ай бұрын

At 6:15, you compared Offshore with Onshore+Storage, instead of ordinary Onshore (which is far cheaper). It's meant to be Onshore I assume?

@EngineeringwithRosie Ай бұрын

Yes that's what I meant. Thought I had caught that mistake before publishing but it must have been in several locations 🫣

@trueriver1950 Ай бұрын

How about building an offshore-ready windfarm near the coast, and wait for sea level rise to take it off shore? That strategy seems consistent with most major govts sense of urgency over climate change. 😮

@stevenverrall4527 Ай бұрын

Governments are not fooled by their own scaremongering.

@rictechow231 23 күн бұрын

So Rosie, how available is actual wind for offshore for say Victoria I have a request in with BOM for their observer fleet data but they are taking their time over it. So I am inclined to thinking isn't much. Obviously it will just be where shipping goes How closely has modeled wind patterns matched to actuals in various countries? It is an obvious question to ask about actuals in siting offshore wind farms and something of a challenge I expect.

@rictechow231 23 күн бұрын

What is the usual process to firm up the selection of a specific site?

@randomracki9453 Ай бұрын

How do you maintain the wind turbines out there

@aliendroneservices6621 Ай бұрын

With fossil-fuels.

@dennisenright9347 Ай бұрын

New York canceling offshore wind projects might have something to do with the success of the city of Montreal just a few hundred km to the north being able to be at 100% renewable for electricity generation with the price that people pay on their bills being about a third of what New Yorkers pay, because of the use of a better form of renewable.

@SR-lh4rm 27 күн бұрын

Interesting stuff. Thanks for the video.

@aleci551 Ай бұрын

Power storage is probably a necessity in many ways, great we can get power from solar and wind, but what happens if the wind does not blow for a certain amount of time. there should be enough storage capacity and power generation that a surplus is there for when a downturn in production hits.

@kenoliver8913 Ай бұрын

And in a well designed grid that is exactly the way it works. Grid engineers have thought long and hard about this and it is definitely a very solvable poblem, in the process of being solved. They have done the maths. Offshore wind is one important part of that solution, as Rosie explained.

@tcroft2165 Ай бұрын

two comments: The US lcoe for on/off comparisons are difficult as so little offshore exists (or is FOAK in the US) that its numbers are not representative The UK auction price referenced was the ceiling price (maximum Administrative Strike Price) not the actual price that will be secured (which will be lower) in the ongoing auction

@douglasengle2704 15 күн бұрын

I'd like a discussion on how wind farm produced electricity is culled to provide something close to grid quality electricity. The gauging showing power production for a wind farm pod for a dozen or so wind turbines was surprisingly jumpy where it would seem having multiple wind turbines would average to a somewhat smoother output.

@josephesparza9900 Ай бұрын

Hey Rosie! What about combined off shore infrastructure, say for instance a large floating wind farm combined with wave generation and gravity batteries as well as water desalination. Could combining innovations like that drop the price?

@billeaton1970 Ай бұрын

Yes Rosie is clearly impartial and independent and can be relied on to take an unbiased look at the topic. So what that she has made her living from offshore wind for the last 20 years, obviously that has no bearing at all on the position she takes.

@user-xq1wz3tp5z Ай бұрын

The aspect to focus on is that in North Sea, particularly off Scotland, developers were building wind power plants with No subsidies, a couple years ago (before inflation changed the situation).

@jasonhan6819 21 күн бұрын

Yes that's a good perspective to keep in mind, but typically engineers of her caliber do not need to rely on a specific industry to be lucratively employed.

@Dqtube Ай бұрын

For onshore wind farms in Europe, the issue is not only the availability of space, but also whether it is possible to get to where the wind is. You can't simply flatten a forest or a village to transport +25m long blades. So the cost of construction in the US is irrelevant to Europe because they have a lot of flat wasteland on the plains. Where the plots have almost no value compared to land in Europe.

@davefoord1259 Ай бұрын

Try building and installing these things without fossil fuels.

@imtheeastgermanguy5431 Ай бұрын

even with fossil fuels its still better

@davefoord1259 Ай бұрын

@@imtheeastgermanguy5431 in your opinion and to your personal goals.

@imtheeastgermanguy5431 Ай бұрын

@@davefoord1259 I mean we just need fossil fuel for right now but the goal should be to need less fossil materials in the future

@shanesmith6815 22 күн бұрын

what about maintenance costs and the cost per kw\hr to the consumer.

@SeventhCircleID Ай бұрын

...worth pointing out, 50GW's of offshore wind at 32% efficiency factor is about 145TWh's/annum. Current UK domestic electrical consumption is around 98TWh's/annum, but that's relying on around 80-85% gas and oil heating to homes. The only way we'll get 26 million homes (plus a million extra the government is saying they'll build) to run on 145TWh's/annum will be by either leaving all homes running on gas/oil, or by upgrading all existing homes (around 22 million) to current new dwelling building regulations standard with heat pumps running at an average COP of 3... to do this by 2030? That's upgrading 3.6 million homes per year, and installing 3.6 million heat pumps per year (last year we installed 36,000 according to Carbon Brief)... and then also worth pointing out that the electricity will be generated throughout the year whereas the lions share will be needed for winter heating, so you'll be needing to store 72.5TWh of the wind energy generated by the 50GW's generators for up to six months for winter heating. At current storage costs per KWh... that's kind of insane.

@aliendroneservices6621 Ай бұрын

"50GW'S of offshore wind at 32% efficiency factor..." It's called *_capacity factor._*

@SeventhCircleID Ай бұрын

@@aliendroneservices6621 ...sigh

@TheRealSnakePlisken Ай бұрын

Jevon’s paradox.

@stanstreatfield3485 Ай бұрын

Also an illustration of how the so called economics of renewable energy is dependent on govt. decisions , not just supposedly objective market conditions. Also raises the question of whether these govts. , the Tories in England for instance are really trying to bring in renewables or just look like they are.

@GeoffHou Ай бұрын

I still don't understand that some people are positive on electricity prices remaining stable or even dropping, when the investments for installed capacity, grid infrastructure, stability control and storage need to be done. I might be wrong but as most companies that are investing in these sectors, are for profit with shareholders, they will want to make good profit quite quickly. A mainly renewable energy grid is possible but what will the cost be for the consumer and industry?

@aliendroneservices6621 Ай бұрын

It is *_not_* possible to power a country with wind-and-solar.

@balkanleopard9728 29 күн бұрын

The one disadvantage for offshore wind that you didn't mention is that, like Nordstream, it's exposed to attack by the rogue major state.

@DavidSmith-qf4zj Ай бұрын

I always enjoy your videos. But as someone who lives in NY, I know that most of our heating is from either gas or oil. Our highest consumption of electricity is definitely in the summer for air conditioning. So higher energy production in the winter won't help with heating. The northeast of the U.S. is most reliant on oil for heat. Only the south in U.S. relies on electric heating.

@EngineeringwithRosie Ай бұрын

All that fossil heating will have to be electrified as part of the energy transition. It's a major challenge for places like NY that aren't super sunny in the winter, and that have a high heating load. Offshore wind will help a lot once it gets going, then gas boilers will need to be replaced with heat pumps.

@Koro2810 Ай бұрын

Always enjoy watching your clips Rosie how do I get a Rosie coffee mug?

@EngineeringwithRosie Ай бұрын

I did some test pieces based on popular request (from my niece and nephews 😂) but wasn't massively happy with the design (too light, doesn't show up that clearly on T-shirts especially), planned to tweak before linking here. But then never actually did that. You *may* be able to order something using this link, but I'm not sure. www.redbubble.com/shop/ap/155745030?asc=u I will eventually fix this all up and link the shop to KZfaq so you can check back in a month or two to see if I have managed to get that sorted!

@bertiesmith3021 Ай бұрын

Time to put in some air source heat pumps.

@velotill Ай бұрын

Exactly, if the Finns can do it, they will work just fine for NYC