Weather Guard Lightning Tech

Siemens Gamesa Expands Offshore, Nuclear Power Debate, Wisconsin Wind Farm Opposition
We made buildturbines.com to help people join the wind industry! In the news, Siemens Gamesa has received certification for their 15 megawatt SG14 236DD offshore wind turbine, 63 of which will be used offshore in the German Baltic Sea. They are also expanding a blade facility in Aalborg, Denmark. We discuss Bill Gates’ TerraPower nuclear project in Wyoming, moving to a discussion about where nuclear energy is a good solution. Then we move to the legal battle between EDP Renewables and the state of Wisconsin over restrictive local wind ordinances. And we highlight Canvus, a company that is recycling wind turbine blades into furniture and art. The Wind Farm of the Week is DTE’s Meridian Wind Park in Michigan!
Sign up now for Uptime Tech News, our weekly email update on all things wind technology. This episode is sponsored by Weather Guard Lightning Tech. Learn more about Weather Guard’s StrikeTape Wind Turbine LPS retrofit. Follow the show on Facebook, YouTube, Twitter, Linkedin and visit Weather Guard on the web. And subscribe to Rosemary Barnes’ YouTube channel here. Have a question we can answer on the show? Email us!
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Weather Guard Lightning Tech – www.weatherguardwind.com
Intelstor – https://www.intelstor.com
Allen Hall: Joel, we built a new website. buildturbines.com.
Joel Saxum: And it looks fantastic. I’m here to tell you.
Allen Hall: And this website is devoted to those future technicians, people that are looking to get a job in wind and don’t know where to start.
Joel Saxum: I mean, the idea really comes from this, Allen. We’ve talked to so many people out in the field through our websites, through the podcast all over the places in the wind industry and around the wind industry.
Of, Hey, how do I get in? How do I get one of these jobs? And, the wind industry scrambling, every recruiting department is saying to their company, Hey, everybody, here’s a recruiter. We need as many people as possible. Where can you find this? Do you have a friend here? Can we get some people here to the point where the DOE has put out a study?
Through NREL as well. That’s there says we need over a hundred thousand, close to 125, 000 wind turbine technicians by 2030. It’s the fastest growing job in America.
Allen Hall: Yeah, and if you visit some of the training facilities, particularly the community colleges, they cannot get enough students to keep those programs alive.
So we’re at a real impasse at the moment. We need to be reaching out to those future technicians and the future engineers that will be helping keeping these wind farms up and running. And that’s why we started build turbines. com.
Joel Saxum: Yeah. The idea is we’re going to put a bunch of information on your articles about being a wind turbine technician.
We have some of this stuff. We talk to these people every day, right? Why not share this information on another platform? So what’s, what we’re going to put forth the qualifications that you need for certain types of jobs, what the salaries look like, what the outcomes could possibly be for a career.
And we want to get this website and this information. We’re going to continue to build on it. So we’ll ask everybody from the industry. If you’re a training center, if you’re an ISP, if you’re a utility, if you’re anybody in the wind industry looking for technicians or want to have some words into, hey, this is what the language we’d like to put in.
These are the things we’d like to use to attract people. Get ahold of us. We’ll want to put it on this website because we’d like to get this thing in front of everybody high schools and. Young people everywhere mid career, people transitioning anywhere. That’s a great opportunity for a fantastic career.
That’s only going to grow. So we need these people. So let’s do a roundup everybody and do our part to get as many technicians out there as we can.
Allen Hall: And that’s what the Uptime Podcast is all about. Communicating with the wind industry and raising it up and making it bigger and better every day and build turbines as part of that.
So visit buildturbines.com.
Welcome to the Uptown Wind Energy Podcast. I’m Allen Hall, and I’ll be joined by Rosemary, Phil and Joel after these headlines. Good news from Siemens Gamesa this week. They have received the type certification for their massive 15 megawatt SG14 236DD offshore wind turbine from TUV NORD. The turbine has already secured eight megawatt worth of orders and will be used in major projects like RWE’s Thor Wind Farm in Denmark and Ørsted’s Hornesea 3 in England.
Up in Aalborg, Denmark, Siemens Gamesa is set to expand its blade factory in the port of Aalborg. The company will receive about 27 million euros from the Danish Green Investment Fund for this growth. The expansion will add about 400, 000 square meters to their premises for storing wind turbine blades.
And Siemens Gamesa has signed a deal to supply 63 of its 15 megawatt turbines for the 945 megawatt Jannecker offshore wind project in the German Baltic Sea. This project is part of Germany’s ambitious plans to reach 30 gigawatts of offshore wind capacity by 2030 and at least 70 gigawatts by 2050.
2045. The European Investment Bank is providing a 1. 2 billion euro green loan to RWE for the construction of the Thor Wind Farm in the Danish North Sea. The 1. 1 gigawatt project will be Denmark’s largest wind farm consisting of 72 Siemens Gamesa turbines. Once operational, it will produce enough green electricity to power over a million Danish households.
The project is part of RWE’s broader 55 billion euro investment in renewables and clean energy technologies from 2024 to 2030. And Germany’s latest offshore wind auction has awarded 2. 5 gigawatts of capacity in the North Sea, bringing in 10 billion. Three billion euros for the government. NBV secured a one gigawatt area with a bid of one billion euros, while Total Energies won a 1.
5 gigawatt site for about two billion euros. Notably, RWE withdrew from its partnership from Total Energy, citing economic reasons. These projects are scheduled to begin operation in 2031, marking significant progress in Germany’s offshore wind expansion plans. In the United States, the Bureau of Ocean Energy Management has given final approval for the construction of Sunrise Wind, which will be New York’s largest offshore wind farm.
Located south of Martha’s Vineyard and east of Block Island, the 924 megawatt project could power over 320, 000 homes annually. Oersted and Eversource, the companies behind Sunrise Wind, are making significant investment in New York’s offshore wind workforce and supply chain. For Including a 200 million contract with the Long Island based contractor.
Construction is set to begin this year with operations expected to start in 2026. In Downer, Virginia, Dominion Energy has begun construction on what will be the nation’s largest commercial offshore wind farm located Off the Virginia Beach coast, the 9. 8 billion project will feature 176 turbines capable of producing 2.
6 gigawatts of electricity. The project includes extensive environmental protections, such as construction timing to avoid well migration and noise reduction techniques. Dominion plans to complete the project by late 2026. And that’s this week’s top news stories. Now here’s our panel. Renewable energy expert and founder of Pardalote Consulting, Rosemary Barnes, CEO and founder of IntelStor, Phil Totaro, and the Chief Commercial Officer of Weather Guard, Joel Saxum.
Bill Gates’s nuclear power company, TerraPower, has broken ground on the new nuclear reactor plant in Wyoming. It’s a natrium plant and it’s expected to be operational by 2030 and will generate about 350 megawatts of electricity with the ability to boost output to 500 megawatts during peak demand.
Now, in theory, it could power about 400, 000 homes. What is unique about it is where it is, and it’s right across the way from a coal plant that’s scheduled to be decommissioned, so they’re going to try to replace that coal fired plant with a nuclear plant. The Natrium plants, which are a little bit different, are a sodium cooled fast reactor, which means they have a, instead of using water for cooling and handling all the interactions with the nuclear material, It’s sodium, and obviously sodium is a metal, so it doesn’t expand water does, so there’s less pressure, it’s basically ambient pressure, so it’s usually a little bit easier to use as a coolant.
And it has other benefits, like the reactor can use pretty much any nuclear waste to power it. So it has some advantages here. Now, if you have seen Rosemary’s YouTube video on Engineering with Rosie talking about, is nuclear power right for Australia? That has generated a lot of feedback online. And I wanted to talk to Rosemary about this because in Australia, nuclear is probably not the right answer, but this, when they’re discussing this natrium plant in the U S where there is not a whole bunch of renewable power, particularly where this is up in Wyoming, does a nuclear reactor then start to make a little more sense, especially since it does have the ability to be flexible on some sense
Rosemary Barnes: Yeah, so the key thing that I think most of the controversy surrounding my video, most of the people that were very worked up about it failed to see the word Australia in the title that nuclear is, I used, I called it four reasons why nuclear power is a dumb idea for Australia.
So it’s, a bit of a provocative title. So I wasn’t, I intended to stir something up. That’s how you, that’s how you get more views on your content. That’s the reality. But I’m definitely not saying that nuclear power is dumb just that it doesn’t make sense for Australia.
And it’s not really, it’s not too much to do with nuclear technology itself. It’s a little bit to do with it, but it’s mostly to do with the fact that we have so such amazing renewable energy resources, such amazing wind and solar in particularly. And then the technological aspect is that nuclear doesn’t combine that well with a lot of variable power because, the traditional nuclear reactors really like to cost a lot of money to build it.
The fuel is not that expensive, but there is a fair bit of labor that’s required to keep the plant safe. And those things don’t vary that much depending on how much power you’re generating, so in the video I had four, four main reasons why it doesn’t make sense for Australia. The first one is that it’s too slow.
We don’t have nuclear already. It’s technically illegal on both the federal and most of our states as well have have laws banning it. The second one is it doesn’t play nicely with wind and solar power. So nuclear really prefers to have steady output or traditional nuclear, at least. The only countries with both a lot of nuclear and a lot of variable renewables are Sweden, which has 30 percent nuclear and 20 percent wind.
And Finland has 35 percent nuclear and 16 percent wind. But both of those countries also have a lot of hydro 40 percent and 20 percent respectively, and hydro is a renewable resource that is very flexible. You turn it on and off when you want to. The third reason was that it’s too expensive. So it’s expensive.
Everywhere, basically less expensive in countries that are building just lots and lots of it. Nuclear power is expensive and when you have alternatives that can do the job like Australia does, lots of wind and solar, then it doesn’t make sense to pay that extra. And the final point in my video was that nuclear power, it solves a bunch of really difficult problems, but they’re not problems that Australia has.
One, it provides constant baseload power, but especially in Australia, baseload is dead by now. There is so much rooftop solar that there are a lot of times during the year, months in the year where every day in the middle of the day, There’s so much rooftop solar that’s providing close to the entire demand of the whole grid.
The big thing that people say about nuclear as well, like wind and solar are a variable. And what about when the sun and shine don’t blow for weeks in a row? Dunkel flouter, they call that in Germany and Australia, it literally doesn’t have those problems. When you look at the last, we’ve got 42 years of good weather data.
And yeah, when you look at. The data, the widespread dunkle flutter across the whole Australian grid they last hours frequently, occasionally a day, but like literally never weeks. In the last 42 years, there were no weeks below 50 percent and the worst ever winter month was around 70 percent of the whole year average.
Yeah, like in countries where you have those problems, nuclear is going to be a really good solution for them, at least to make up a big chunk. So yeah, the video I did was really Australia specific.
Allen Hall: It raised a good point, I think, in that there are a variety of different energy grids, different energy mixes.
France is different than Sweden, Sweden is different from Australia, Australia is different from the US. So it isn’t like. Hydro is great in some places where they have it, right? And it doesn’t really work in the desert. But nuclear is one of those pieces where you can plug it in where needed and I was trying to get out of that video, which is really good, by the way, that what’s the complimentary piece for nuclear?
And if it’s hydro, then that would make sense to me. Like you need to pair those two together to get to a more flexible grid, so to speak.
Rosemary Barnes: I don’t think you need hydro cause you can do it with storage. If you have to, it just with batteries or whatever it is.
Allen Hall: Yeah. But it’s a today problem though.
It’s a, we don’t have the batteries today to do 500 megawatts. At least in the United States.
Rosemary Barnes: It is plausible. It’s just it wouldn’t happen instantly, but if you’re embarking on a new nuclear project, you’ve got 10 years to sort your batteries out, and I think you could have hundreds of gigawatts of batteries in 10 years.
If that’s what you set your mind to. But I think, I don’t think it’s so much about what’s a good country for nuclear. I think it’s more like nuclear can go anywhere but it’s not the first solution with the other alternatives that are out there now, the costs that they’re at now, nuclear is the biggest, most versatile, but also probably the most expensive option.
So you use it where you have to, and if you can use something else, then you do.
Allen Hall: Let’s ask the question, Rosemary, the Department of Energy is throwing 2 billion at this project and the investors are putting another 2 billion behind it. So there’s 4 billion going into this. Does that sort of upfront money into a new style of nuclear reactor change the economics going forward, or is it still going to be expensive and long term?
Rosemary Barnes: It’s going to help with the development of this one, but if you look at competitors to this, like new scale, they, I can’t, I, I heard the figures recently about how much they’ve spent and they haven’t got a lot to show for it at this point. They’ve got the technology, but they don’t have projects.
I don’t think it’s enough on its own.
Philip Totaro: The person that’s championing this in Australia is named Peter Dutton, and they’ve done estimates of how much this plan is going to cost. And it’s 600 billion dollars, Australian dollars, but still. And it’s the Commonwealth Scientific and Industrial Research Organization did an estimate that said this is only going to produce like 3.
7 percent of the electricity in Australia. If they actually built all these nuclear reactors. So this is a, as Rosemary’s saying, it’s a preposterous idea to do it in Australia, but, if you had already built nuclear technology and you wanted to upgrade, potentially you could retrofit some of the pre existing plants with newer technology that might operate a little more efficiently, but it doesn’t make a lot of sense if you’re renewables resource rich.
Okay. It doesn’t make sense to go nuclear versus going down the renewables route. Think about how much, we would get out of 600 billion, even again, Australian, but like that, that builds, almost a hundred percent of the needs of, Australia’s like electricity market. It could be fully renewable with 600 billion instead of spending it on nuclear, which is only going to produce 3.
7%. You spent 600 billion fighting Russia.
Joel Saxum: That’s what I was just going to say. Or if you’re the U. S., you could fund a few wars.
Allen Hall: Right.
Joel Saxum: So it isn’t 600 billion has not been thrown around. This is, I think this is a side conversation from this one, but very intimately related to it. The general person reading these news articles, whether it’s Rosemary’s video that she did or it’s.
We’re not gonna allow turbines, we’re putting a moratorium on turbines here, or we’re gonna, nuclear energy here, or the dangers of this or that. The general public has no clue about the intricacies of what we just talked about. Hey, gas peaker plants can fire up and produce power on demand.
Wind only works when there’s wind, or if you have batteries, or you have a solar, like how these different types of generation interact with the grid, how, what are the ins and outs of hydropower? Why is it good? Why could it be bad? These kind of things, people just look at it like these are just energy generation sources as they’re all the same, which they’re not.
They just don’t mix. Some of them don’t mix with each other depending on how the grid is built out, or what is available for natural resources in the area, any of those things. This is something that’s, could be, like a, someone should come up with a nice matrix of all the power generation things that we’d use in.
Allen Hall: Who is sitting down with the spreadsheets?
Joel Saxum: Nobody.
Allen Hall: That’s what I’m trying to get at, Joel, is like, who is doing that now to say, hey, a nuclear reactor in Wyoming is the thing to do. Versus batteries in Arizona. Where does that all fall together? Who’s putting that spreadsheet
together? This article here that says this thing could power 400, 000 homes in, in, and it’s in the Southwest corner of Wyoming where there is nothing.
There’s only 250, 000 homes in the whole state. But
The energy is going to go down to Arizona, down to Nevada and to Colorado. Los Angeles, right? That’s where it’ll eventually end up. Yeah,
Joel Saxum: There’s raw materials. You’re there’s uranium all over Wyoming. So that’s nice,
Allen Hall: yeah, but I think to Rosemary’s point, because Rosemary just brings up, hey, we could build the grid better. Okay. But who is looking at that? What is the agency? Who is the group of people that has an outline of what this looks like? Because I don’t think in the United States, there is, I’ve never heard of them.
You would think it’s the DOE, but. You would think, but it doesn’t appear to be.
Rosemary Barnes: There’s so much research, so much modeling about those kinds of systems, but. It’s really hard. A lot of them, maybe even most of them have really I don’t know, they’re coming at it from a specific angle, so someone from, and you can get whatever answer you want by tweaking your assumptions enough.
We’re going to do a live stream with a friend of mine, who’s an accountant with this platform key numbers where you can, change all of the assumptions and see what the answer, what different answer you get. People complain are in levelized cost of electricity. Calculations, they always assume 30 year lifetime for nuclear power, but really, it should last a hundred years.
So that’s not fair. You change that number, see what happens. On the other side, people against nuclear, like you never factor in waste disposal costs or yeah, decommissioning of the plant, put that in, see what happens to the cost. And yeah, we’re just going to go through and change.
All those assumptions.
Allen Hall: But is the problem though that because we’re so far down the electricity grid build out that you’re only minutely changing some of the variables because the grid is 100 percent right now. It’s completely built out for the population that you have today. It’s built out.
So you have to start somewhere. And if you’re starting from that 100 percent build out, now you’re going to add 1, 2, 3 percent a year. You’re not going to change the majority of the grid anyway. Is that where that goes?
Rosemary Barnes: In the CSIRO GenCost report, they’re definitely including quite a lot of extra transmission.
If you assume that you have a lot of wind then you are going to need to build a lot of new transmission and that’s included.
Allen Hall: That’s where I wanted to get to Rosemary, with your nuclear discussion was, we’re playing around with the generation side. But that doesn’t seem to make any difference in reality.
It’s the transmission side where we’re going to struggle, but we’re not really focused there at the minute.
Rosemary Barnes: Oh, I think there’s a lot of focus on transmission. It’s just so hard in, especially in the U S it’s pretty hard in Australia. I think it’s like incredibly hard in the U S there’s a lot of stuff.
I don’t think it’s going to turn out to be as much of a problem as it seems today, that transmission, because there are a lot of other things you can do, especially when you’ve got a lot of distributed energy, like a lot of rooftop solar and more and more. Household batteries as well.
Allen Hall: Is that where the answer lies though?
We should be really focused on how to transmit electricity versus generate it. We know how to generate it pretty well. We can plug in solar, we can plug in wind pretty quickly, even plug in nuclear or hydro. But the problem is getting it distributed where it needs to be, where there’s high wind, great solar to where the cities are.
That seems to be the problem, particularly in the United States. That’s where the problem lies today.
Rosemary Barnes: Yeah. It, I think again, it’s like really local, like what’s this generation, there’s transmission and there’s energy storage. Those are the three big things. And which one is the biggest will vary from country to country.
At the moment in Australia, I personally think that we’re focused too much on storage and not much enough on generation. Wind is not getting built out at the rate that it will need to yeah to get to 90 percent renewables in yeah, 10, 15 years. But we’re building lots and lots and lots of batteries.
A battery doesn’t generate energy. You need energy to store in a battery for it to be useful to you. So yeah, I expect in a year or two, we’re going to see an adjustment of where our attention is focused in Australia.
Allen Hall: So Australia will be focused on. New additions and the United States we’ve built on, we’ll be building hopefully transmission lines.
It’s transmissions is the only thing slow in it.
Rosemary Barnes: Yeah. What the solution is going to depend on how easy it is to build storage. If it’s easy to build storage, you’ll get a lot of solar. And if it’s easy to build transmission, you’ll get a lot of wind. I think that’s more the. The question while people are really focused on solar panels and wind turbines, they’re missing the point.
It’s a little bit, yeah, a little bit removed from that.
Allen Hall: Everybody should go watch Rosemary’s video, Nuclear in Australia, and then comment on it. Leave it a really long worded, heated comment because she reads all of those.
Rosemary Barnes: Yeah, and then if you disagree when you disagree with the assumptions, then you go back and check out the live stream that I did with John, the recording will be up after we do it and then you can see what difference the yeah every assumption we’ve gone through the comments and found the most common things that people complain about as being bad assumptions and we’re going to change them and show real time what difference that makes to the economics.
So yeah, go through and check that out.
Allen Hall: Up in Wisconsin, there is a legal battle unfolding that could have some really far reaching consequences for renewable energy across the state. There are two towns in central Wisconsin that are being sued by EDP Renewables or their subsidiary, which is Marathon Wind Farm, LLC, over the restrictive wind ordinances that they’ve put in place.
These local ordinances, which were enacted About a year ago are stricter than the state laws and are part of a growing trend in the United States of local municipalities applying more restrictive laws to wind and solar. in their local neighborhood. So even though the state may allow wind farms to be developed the local ordinances is effectively don’t.
So this is what the lawsuit is about and EDP is going to push the case here because this is one of probably a dozen or more places where they could have done this. This is Joel’s territory. He’s from Wisconsin. He knows this area. Is this area of Wisconsin ripe? For wind at the moment.
Joel Saxum: So where these are, remember you were talking Marathon County.
So you’re smack dab in the middle of the state. Marathon County is, there’s like a little trifecta there with Wausau, Stevens Point and Marshfield and Wisconsin Rapids, there’s a, it’s a little population center there in the middle. It’s not traditionally a place where there’s wind energy, right?
Wind, if you’re in the wind industry, you don’t think of Wisconsin as a place there’s a lot of wind farms. There’s a few in the southwest corner along the southern side where it’s more farm country type things, right? And this is agricultural country up there in Marathon County where they’re looking.
But and Allen, you and I were talking about the software, so I’ll give a little bit of a history lesson to the state of Wisconsin here, but this is most of the Midwest, right? The original surveys were done in the early 1800s, mid 1800s, and there’s a lot of. Six mile by six mile townships in the middle of this thing.
Each of these places that is being sued by EDP, their towns, people say oh, it’s a town, it’s a city. These are country towns, right? Their townships with their six miles by six miles square, about their third, so 36 square miles. And between the two of them, so 72 square miles, there’s only about 2, 500 people that live.
In the whole area, those 2500 people farmers work in the local area there. They’re going to have their thoughts and I’m going to go back to the idea of this is more my thought that wind and solar and renewable energies are more of a bipartisan issue. It’s more of a political issue than it is a technological issue.
Because in these areas here, there’s no real reason to not have wind, right? It’s not oh, there’s a protected area or something or a bird population or you’re going to fly away for ducks or something of that sort. Or there’s, golden eagles that are protected by whoever. That doesn’t exist here in the center part of Wisconsin.
That’s not a thing. So I go backwards to these townships are passing laws or regulations or whatever for the local thing. Their populations are less than 2, 000. I think one of them was less than a thousand, so of 900 people. There’s just no possible way or statistically there’s no way that there’s an actual grid energy or grid or any kind of expert there.
I love Wisconsin. That’s where I’m from. I’m from one of those townships of 6 miles by 6 miles. It only has 500 people in it. And I can tell you right now that the town commissioner there has no business passing a law about what kind of energy production is done on the land because they don’t have the requisite knowledge to make that decision.
So that’s part of what’s going on here. To me, it seems like it’s more of just a political issue. We don’t want those dang turbines in our backyards. Then actually this could help. This is a good thing. There’s some, there’s a population center on the outskirts of this stuff that could use some good renewable energy and jobs.
You’re talking about some big wind farms going into, there’s 15, 20 full time jobs that could come from this and a lot of tax based revenue.
Allen Hall: So these local governments do not have a lot of extra funds to go for. lawsuit and a lot of times, they’ll try to negotiate their ways themselves out of a lawsuit because the lawyer fees can add up so quickly.
What is a likely scenario here? I’m surprised that EDP hasn’t tried to negotiate this already. I’m really shocked that they’re going down the legal route.
Joel Saxum: I think the legal route has to be, in my mind, it has to be a scare tactic because yes, if you go to bat, if EDP goes to battle with these townships, unless some organization steps in on the behalf of these townships and pays for the legal fees, EDP will blow them out of the water in a month in legal fees.
They just won’t be able to afford it. The tax, the revenue that these places have, it’s nothing. It’s peanuts. It’s spent in. Grading roads and putting salt down in the wintertime. I know it’s, but it’s twofold, right? If you, then if you are ADPR and you’re going to sue your way into creating a wind farm here, you’re automatically going to piss off everybody.
Everybody in that county, everybody in that township, you’re going to make them angry. If I’m EDPR, to be honest with you, you’re better off pulling out. That’s the way I see it. I don’t like that, but it’s what I see.
Allen Hall: Is it a longer term play though, Phil, that EDPR is looking in the future and going, okay, we’re going to repeat this process again and again, we need to get the state to step up and to enforce the laws that the state controls what happens on the ground.
Not the local town.
Philip Totaro: Because keep in mind that the state actually already has a law on the books that places a restriction on townships and counties passing these kind of ordinances unless three conditions are met. one of three. First is protect health or safety. Second is do not significantly increase the cost or decrease efficiency versus the whatever conventional power source they have now.
And third is allow for an alternative system of comparable cost and efficiency. So basically what that all means is if you’re taking, if you’re retiring a coal plant and putting wind in, then it’s got to perform at the same level. Now, necessarily, wind doesn’t have the same capacity factor as coal, so you’re gonna have to build more megawatts, but it takes up less space, and it’s obviously less polluting.
I’m not sure what legal ground these townships and counties have to stand on to say that they’re meeting any of these criteria. So they’re going to have a hard time fighting this, as Joel mentioned, not to mention just the cost, but the legal argument that they can make probably doesn’t really hold a lot of water.
This is probably on their part just something to slow down the process or make it more expensive for the developer. But, it’s creating this animosity on both sides, which is, leading to a general trend where, again, in, in a state like Wisconsin, they’ve already got A state level law on the books that says that you can’t do this.
Illinois is another state where they had to pass a law overturning the the local authorities control over permitting of projects. Because too many counties and townships in Illinois were doing the same thing just trying to put ordinances in place that were slowing down or stopping development of wind and solar, and the state had to step in.
Because we know that, we are never going to get a federal policy, a coherent federal policy on this, the states are the ones that have to step up and, take matters into their own hands which is what a lot of people want anyway. It’s, states rights has always been at the core of this country.
But at the end of the day, this is what’s unfortunately going to be necessary because People are, making these decisions based on a political motivation in all likelihood and not a commercial one. And that’s necessarily leading to this animosity that Joel’s talking about is that, because people are just behaving in a way that doesn’t lend itself to a collaborative and cooperative environment with project developers that come in and say, we want to help you.
We want to, build this thing. It’s going to be better. It’s going to, reduce pollution. It’s going to do all these things. We just have an environment where, you know for whatever reason, people just don’t want change. Don’t we need to have people on the ground? Yes. So, what’s leading to this happening?
Is, about 10 or 15 years ago, our lobby groups in this industry used to have, grassroots representatives with boots on the ground. And over time, they’ve shifted focus from grassroots efforts to federal policy, particularly PTC extension, and most recently, the IRA bill, which, to its credit, is doing something to attract You know, foreign companies to domesticate production.
It is doing something to promote investment in renewable projects because of how lucrative the production tax credit is. But I’ve, I get the feeling that they’re stretched a little too thin because it’s left a lot of the grassroots efforts that they used to do from, the kind of the OEA or ACP level.
Is now in the hands of regionally focused groups that are probably criminally understaffed and criminally under resourced in terms of budget and just the resources that they have to be able to go out and fight all these fires because now you have, according to this Columbia University report, which we’re Most of you will remember my famous rant last year about how I was mad as hell and not going to take it anymore.
This year, I’m positively apoplectic about it because it’s gotten worse. We have another 55 counties or townships, in addition to what we already had last year, that have passed ordinances that are precluding wind and or solar development. And the only way that this is allowed to happen is if we don’t have the grassroots outreach.
And the only way it gets solved is if we do. We have to be out there fighting a lot of these fires again with boots on the ground. And that means that there’s gonna have to be a shift in the allocation of resources away from Washington and what’s going on in Washington to what’s going on in the state.
Legislatures where the states, as we just talked about with Wisconsin and Illinois, the states are going to have to take control over whether or not they have the power to preclude counties and townships from blocking wind and solar development, just on a purely, non scientific, mostly political basis.
And let’s be real. That’s what’s going on here. I, that’s the only way I see this happening and getting better for us as an industry.
Joel Saxum: If you send someone from Washington, D. C., I don’t care who they’re associated with, ACP, AWEA, Joe Biden, doesn’t matter. If you send someone from Washington, D.
C. to central Wisconsin to talk to them about wind farms, they’re gonna get laughed out of the building. It’s not gonna work. It’s, you can do grassroots stuff the grassroots in central Wisconsin has to come from a farmer from Iowa or someone else from central Wisconsin that is in the same boots they’re in.
They’re just like, it’s just simply not going to happen. I’m saying this from experience. Like you’re not going to even okay. So I’m a sports hunt. I just hunted a lot in Northern Wisconsin my whole life. That is a very heavily conservative area. They don’t trust anybody from Madison.
Even though it’s the capital of the state to come up and have a town hall meeting about the deer season. They’ll push them out of the frickin state, out of the auditorium in the high school over deer hunting. They’re not gonna, they’re not gonna have someone from Washington, D. C. come in and tell them about what, putting wind farms in their backyard.
It’s not gonna work. So you have to figure out a grassroots efforts to do this, yes. But you gotta figure out the right people to do it. You have to have someone that the people on the ground are gonna trust or at least align with before they agree to some of these things. That’s why we’ve actually talked Allen and I have talked with multiple people that are veterans that are doing that, that are doing this outreach that are, that have been through our military, and they’re going out and talking with people in the field.
It’s someone that they can align with, someone that people can trust. But you’re not gonna, you’re not gonna take people from D. C. think tanks to Nebraska and Oklahoma and Kansas and tell them that wind farms are good, they’re gonna get pushed out.
Philip Totaro: And not for nothing, but in, on the back of the Labor Department releasing yet another report that says that wind technician is the number one job in the United States, again, for whatever, the third or fourth year in a row.
Joel, that’s really not the worst idea I’ve ever heard is to have the people who are, getting the benefit of, and a lot of them are veterans, get the people who are employed to work on and maintain and operate wind farms, go out there and tell their story about how, coming out of the military, this has changed my life and given me, the same kind of purpose that I had when I was in the military.
To be able to have them go out and tell that kind of story to, the people who are their neighbors will have so much more meaning and so much more impact, and it’ll get people away from these hysterical arguments about, property values that it’s already been debunked and all this other, anything you want to infrasound, it’s already been debunked.
It doesn’t matter to a lot of these people because they’re so locked into a way of thinking that Because they’ve got somebody that’s feeding them this, all this dis disinformation. The only way you counter that is by having somebody that they can trust, somebody from their local community who could tell ’em straight up what’s really going on out there at these wind farms.
And the techs would be great spokespeople to be able to go do that.
Joel Saxum: The guy that you might be at the local bar in a corner having a beer with on Friday. That’s the guy you want to talk to. That’s good for these meetings.
Allen Hall: If you’re going to let the states lead the way in terms of setting up the electricity grid and creating the necessary power, then the governors and their staff need to be involved in directing that.
And I haven’t seen a lot of governors get involved in renewables too much. Probably down in Texas, Joel, is where I’ve seen the most, right? Governor Abbott seems to be pretty involved in those things, but a lot of other states, not so much. And if they’re having difficulty at the local level, that’s where the governor and the staff needs to step in and try to negotiate that.
And I don’t see much of that happening at the minute, maybe because they’re too busy doing other things, but it is part of their responsibility. In the latest PES Wind, And if you haven’t received your copy, you can go online to PESWIN. com and read it online. There’s an article that I found interesting, which was it’s a company called Canvas and Joel, you and I saw this and Phil, you saw it too.
When we were in Minneapolis, they’re taking sections of recycled blades or recycling blades into pieces and then making. Furniture out of it. We saw some of that in Minneapolis at ACP. And, but also they’re having artists paint these pieces to make them more architecturally pleasing. And this whole operation is run out of Ohio, outside of Cleveland, Ohio.
And, remember Joel, when you and I were walking down the highway that one day, we were like, Oh, there’s artists here painting these turbines.
Joel Saxum: Yeah, I honestly thought it was something that ACP was just doing for the show, right? Sometimes they have those things. Or was it like ACP O and M this year, we were in San Diego and they had a top gun, like Tom Cruise look alike people.
Or when we were somewhere else and they had some people line dancing in San Antonio or something like that. I was like, Oh, this is some gimmick that ACPs did. I didn’t realize it was a company that was doing this and it was a part of the, and they’re in the aisles. I stopped and watched a couple of different artists paint on these things.
They were fantastic. I even Over by our booth on the far East end of the conference center. There was a bunch of these kind of set up in a little area. I went and took a couple of meetings and calls from them and sat down in the furniture and tucked away into the corner and had a phone call.
It was comfortable. But yeah, really cool. So you see a lot of people of course, recycling blades is all the a lot of the talk on the, in the industry right now. And it’s, now there’s, we’ve got companies doing it, we’ve got people making making, New end user products.
We can, we’re doing the cement kiln thing and we’re making a lot of things out of recycled wind turbine blades. But upcycling is also a thing. Upcycling, you’re seeing University of Georgia or Georgia Institute of Technology was making some bridges. They’ve done some bridges I’ve seen over in the UK and in Denmark, Ireland, Poland.
Yeah. Yeah. So there’s a lot of things going on in that space and canvas out of the, out of Ohio there. They’re doing some really cool stuff. I’m making like picnic tables and outdoor furniture and civic art, some other things. So yeah, more things happening in that wind turbine recycling world.
Allen Hall: Yeah. It looks like they can recycle about 2000 blades a year doing this is what they’re had the capability to handle. So that’s exciting. Pretty cool stuff. And if you want to see more about wind energy and all the different aspects and where the technology is headed. Then check out PES wind at PES wind. com.
Joel Saxum: So Michigan’s largest wind park from also Michigan’s largest producer of and investor in wind DTE is now online. It’s called Meridian wind. It’s right in the from our Michiganders, it’s right in the middle of your knuckle when you make the mitten to show the state. So it’s a 225 megawatt park, a 77 GE 2. 8. 1 27 meter rotor turbines cost roughly around $300 million. It was built mostly by Michigan workers and can power over 78,000 homes. So it’s part of that $300 or part of that $300 million investment by DTE was over $4 million paid to local landowners who are hosting aspects of the project.
So with the commissioning of Meridian Wind Park, DTE now has 20 wind parks in its new renewable energy portfolio. And a total investment in renewable energies of over 3 billion dollars. They also plan to add approximately 1000 megawatts of new renewable energy each year starting in 2025. DTE is making some big moves.
One of the cool things about this project, on top of the staff that are already working there since 2023 when this thing was built they expect to create 12 to 15 more jobs to support operations administrative duties. So as a rule of thumb, if you’re not used to the wind industry we have typically one wind turbine technician for every 8 to 10 turbines.
So they’ll have probably eight wind turbine techs out on site full time. So some new jobs to central Michigan with a lot of investment congrats DTE on meridian wind.
Allen Hall: That’s going to do it for this week’s Uptime Wind Energy podcast. Thanks for listening. Please give us a five star rating on your podcast platform and subscribe in the show notes below to Uptime Tech News, our weekly newsletter and watch Rosemary’s YouTube channel, Engineering with Rosie.
And we’ll see you here next week on the Uptime Wind Energy podcast.
https://weatherguardwind.com/siemens-gamesa-nuclear-power-opposition/
Renewable Energy
PowerCurve’s Innovative Vortex Generators and Serrations
Weather Guard Lightning Tech
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PowerCurve’s Innovative Vortex Generators and Serrations
Nicholas Gaudern from PowerCurve joins to discuss SilentEdge serrations with up to 5 dB noise reduction, Dragon Scale VGs for AEP recovery, and their approach to products that actually perform in the field. Contact PowerCurve on LinkedIn for more information.
Sign up now for Uptime Tech News, our weekly newsletter on all things wind technology. This episode is sponsored by Weather Guard Lightning Tech. Learn more about Weather Guard’s StrikeTape Wind Turbine LPS retrofit. Follow the show on YouTube, Linkedin and visit Weather Guard on the web. And subscribe to Rosemary’s “Engineering with Rosie” YouTube channel here. Have a question we can answer on the show? Email us!
Welcome to Uptime Spotlight, shining Light on Wind. Energy’s brightest innovators. This is the Progress Powering tomorrow.
Allen Hall: Nicholas, welcome back to the show.
Nicholas Gaudern: Thanks, Allen. Always a pleasure.
Allen Hall: Well, there’s a lot of new products coming outta PowerCurve. And PowerCurve is the aerodynamic leader in add-ons and making your turbines perform at higher efficiency with less loss. Uh, so basically taking that standard OEM blade and making it work the way it was intended to work.
Nicholas Gaudern: Yes. We
Allen Hall: like to
Nicholas Gaudern: think so. Yeah.
Allen Hall: And there’s a, there’s a lot of new technology that you’ve been working on in the lab that you haven’t been able to explore to the, introduce to the world, so to speak. Yeah. And we’ve seen some of it from the inside of, you know, you’re working behind the scenes or working really hard to get this done, but now that technology has been released to the world, and we’re gonna introduce it today, some new trailing edge.
[00:01:00] Components. Yeah. That really, really reduce the noise. But they, they look a little bit odd. Yes. There’s a lot of ADON dams going on with
Nicholas Gaudern: Yeah.
Allen Hall: With these. So what, what do you call these new trailing edge parts?
Nicholas Gaudern: So, so what you have in your hand here? This is the Silence edge, uh, serration. So this is our new trailing Edge Serration products.
Now, most people, when they think of training restorations, they are thinking of triangles.
Allen Hall: Exactly.
Nicholas Gaudern: These Dino tails. Dino Tails, that’s the Siemens, Siemens name for them. Pretty, pretty standard. You see ’em on a lot of turbines now. Sure. And they work, you know, they do do a job. They do a job. They reduce noise.
But like with lots of things in, in aerodynamics, there’s lots of different ways that you can solve a problem and some are better than others. So we’ve worked for a long, long time in the wind tunnel, uh, in the CFD simulations, and we’ve come up with this pretty unique shape. We think,
Allen Hall: well, the, the, the shape is unique and if you, if you look at it, there’s actually different heights to the, the triangle, so to speak.
To mix the air from the pressure and the [00:02:00] suction side to reduce the, the level of noise coming off the blade
Nicholas Gaudern: e Exactly. So we have, uh, we have an asymmetry to the part. We have these different tooth lengths. We have, uh, a lot of changes in thickness going on across the part. So it may be a little bit difficult to see on the camera, but these are quite sculpted 3D components.
They’re not, they’re not flat stock white triangles. No, no. There’s a lot of thickness detail going on here. We’ve paid a lot of attention to the edges. We’ve paid a lot of attention to these gaps between the teeth as well. So all of this is about trying to figure out what is the best way to reduce noise.
And something that not a lot of people will, will admit, but it’s true, is that as an industry we don’t really understand the fundamentals of how serrations work.
Allen Hall: It’s a complicated
Nicholas Gaudern: problem. It’s a really complicated thing. Problem, yeah. Yes. So trying to simulate it in CFD is an absolute nightmare. The, the mesh sizes required, the physics models required are really, really difficult.
So what we found is that you’re probably better off spending [00:03:00] most of your time and money in the wind tunnel. Yes. So, so we go to DTU, they have this wonderful, uh, air acoustic wind tunnel, the pool of core tunnel. It’s one the best tunnels in the industry for doing this kind of work. It
Allen Hall: is
Nicholas Gaudern: because you can measure acoustics and aerodynamics at the same time.
So this allows us to do a lot of very cost effective iteration for this kind of design work. So we know what’s important. You know, we’ve, we’ve studied all the different parameters of serrations lengths, aspect ratios, angles, thicknesses, all this kind of stuff. And it’s about bringing them together into a, into a coherent product.
So this is, this is a result of a lot of design of experiments, a lot of iteration, and combining wind tunnel and CFD to kind of get the best of both of those tools. So,
Allen Hall: so what’s the. Noise reduction compared to those standard triangular trailing aerations. Yeah.
Nicholas Gaudern: So there’s lots of different ways of, of thinking about noise reduction, but I think probably the most useful is the O-A-S-P-L.
So this is the overall sound pressure level. Right. Is kind of what [00:04:00]typically you’ll be measuring in an IEC test.
Allen Hall: Right.
Nicholas Gaudern: And that’s measured in decibels, but a way to decibels because it’s important that we’re waiting to what the human ear can actually hear. Right. Perceive. Exactly. So that’s the numbers we report.
For the field test we’ve recently completed with Silent Edge, we’re seeing up to five decibels of O-A-S-P-L noise reduction.
Allen Hall: Okay. So what’s that mean in terms of what I hear on the ground?
Nicholas Gaudern: So that is an absolutely huge reduction. It’s multiple times of reduction because you know, decibels on a log scale,
Allen Hall: right?
Nicholas Gaudern: So five DB is is enormous. It’s
Allen Hall: a lot. Yeah.
Nicholas Gaudern: And what’s really interesting is that if you have a turbine that’s running in a noise mode, just one decibel reduction. Of power, sound, sound, power level might be three or 4% P loss. I mean, that, that’s, that’s huge. Think about that loss. So if you need to reduce noise by five decibels to get within a regulation, imagine how much a EP you have to throw away by basically turning down the [00:05:00] turbine to do that.
Allen Hall: That’s right.
Nicholas Gaudern: So that’s really what the, the business case for these kind of products is. It means you can escape noise modes because as soon as you use a noise mode. You are throwing away energy.
Allen Hall: You’re throwing well you’re throwing away profits.
Nicholas Gaudern: Exactly.
Allen Hall: So you’re just losing money to reduce the noise.
Now you can operate at peak.
Nicholas Gaudern: Yep.
Allen Hall: Power output without the creating the noise where you have that risk. Right. So, and particularly in a lot of countries now, there are noise regulations. Yes. And they are very well monitored.
Nicholas Gaudern: Yep.
Allen Hall: We’re seeing it more and more where, uh, government agencies are coming out and checking.
Yes. ’cause they have a complaint and so you get a complaint. Oh, that’s fine. Or someone can complain. Yeah. You know, you need to be making your numbers.
Nicholas Gaudern: Yep. And, and the industry needs to be good neighbors, you know? It
Allen Hall: certainly does.
Nicholas Gaudern: Uh, we have to make sure that people are, you know, approving and comfortable with having wind turbines in their backyard.
Sure. And noise is a big part of that.
Allen Hall: It is.
Nicholas Gaudern: So yeah. Ap sure. That’s really important. Being a good [00:06:00] neighbor also important.
Allen Hall: Right.
Nicholas Gaudern: Meeting the regulations. Obviously you have to meet the regulations. So this product, um, has been through a really long development cycle, and we’re now putting the final touches to the, to the tooling.
So this is available now.
Allen Hall: Oh, wow.
Nicholas Gaudern: Okay. Great. Um, and we’re hoping that in the next uh, few months we’ll be getting even more turbines equipped out in the field with, with the technology.
Allen Hall: So, oh, sure. There’s a, you think about the number of turbines that are in service, hundreds of thousands total worldwide.
A lot of them have no noise reduction at all.
Nicholas Gaudern: No. No.
Allen Hall: And they have a lot of complaints from the neighbors.
Nicholas Gaudern: Exactly.
Allen Hall: Trying to expand wind into new areas, uh, is hard because the, the experience of the previous Yes. Neighbor
Nicholas Gaudern: Yep.
Allen Hall: Grows into future neighbors. So fixing the turbines you have out in sight today helps you get the next site.
I know we don’t always think about that, but that’s exactly how it works. Yeah, of course. Uh, we need to be conscientious of the people of the turbines we have in service right now. So that we can continue to grow wind [00:07:00] globally and more regulations on noise are gonna come unless we start taking care of the problem ourselves.
Nicholas Gaudern: Yep. And another really important thing with Serrations is that you have to design them so that they don’t impact the loads on the rest of the turbine.
Allen Hall: Right. And people forget about that.
Nicholas Gaudern: Yes.
Allen Hall: Can you just, can’t just throw up any device up there. And think, well, my blade’s gonna be happy with it. It may not be happy with that device.
Nicholas Gaudern: You have to really carefully understand what the existing blade aerodynamic signature is.
Allen Hall: Sure.
Nicholas Gaudern: How is that blade performing? What is the lift distribution across the span? Yeah.
Allen Hall: Right. Yeah.
Nicholas Gaudern: So what we do, and we, we’ve talked about it before we go and laser scan blades. We build CAD models, we build CFD models so we can actually understand how much lift a blade can take and what’s the benefit or the penalty of doing so.
So these serrations are designed by default to be load neutral. They won’t increase lift. They won’t reduce lift. That’s what
Allen Hall: it should
Nicholas Gaudern: be. That’s where you should start,
Allen Hall: right?
Nicholas Gaudern: And maybe there’s some scope to do something else [00:08:00] on certain turbines, but you shouldn’t, you shouldn’t guess. You, you need to calculate, you need to simulate, you need to think very carefully about that.
So that’s what we do with these, uh, with these serrations, we go through this very careful aerodynamic design process to make sure that they reduce noise and that’s it. They don’t increase loads, they don’t reduce AP by killing lift. And that’s, that’s an important aspect.
Allen Hall: Well, that’s the goal.
Nicholas Gaudern: Yes,
Allen Hall: exactly.
I don’t necessarily want to increase power. I don’t wanna put more load in my blade, but people do that. I’ve seen that happen and man, they regret it.
Nicholas Gaudern: Yeah, regret it. There’s, there’s some pretty wild claims out there as well about observations can and can’t do. And uh, like with lots of things, it’s important to just do the simulations, speak to some experts and, um.
Yeah, maybe take the, the less exciting path, you know, sometimes,
Allen Hall: well, no. Yeah. Well, less exciting path where I don’t have a broken blade.
Nicholas Gaudern: Yeah, exactly.
Allen Hall: Yeah. That’s a lot less exciting. It’s, it’s definitely more profitable. Now, the Dragon Scale Vortex generator has been [00:09:00] around about a year or so.
Nicholas Gaudern: Yep, yep.
Allen Hall: And the thing about these devices, and they’re so unique, interesting to think about because you typically think of a vortex generator as this being this little bit of a fence.
Where you are tripping the air and making it fall back down onto the blade.
Nicholas Gaudern: Yep.
Allen Hall: A really, it works.
Nicholas Gaudern: It works.
Allen Hall: But it’s it’s
Nicholas Gaudern: been around a long time.
Allen Hall: Yeah. Yeah. It, it does, it does do this thing. And they, they were, they came outta the aviation business. We use ’em on airplanes to keep air flow over the control surfaces so we can continue to fly even in close to stall conditions.
All that makes sense. And airplanes are not a wind turbine.
Nicholas Gaudern: Yes.
Allen Hall: So there’s different things happening there. So although they work great on on aircraft, they’re not necessarily the most efficient thing for a wind turbine where you’re trying to generate power and revenue from the rotation of the blades.
Nicholas Gaudern: Exactly.
Allen Hall: So this is a completely different way of thinking about getting the airflow back onto the blade where it produces [00:10:00] revenue.
Nicholas Gaudern: And what’s really nice is to actually see this together with silent edge, because historically, and maybe not even historically. Serrations VGs, they’re triangles. They work, they do a job.
But that doesn’t mean you can’t do it in a different way. In a better way.
Allen Hall: Right.
Nicholas Gaudern: And that’s the same principles from applying with Silence Edge and Dragon Scale. We want to work the flow in the most efficient way possible.
Allen Hall: Right. You’re trying to get to an
outcome.
Nicholas Gaudern: Yeah, exactly.
Allen Hall: Efficiently.
Nicholas Gaudern: We want to, we want to target very specific things on the blade, and that’s where you can see there’s a few different styles of Dragon Scale that we have on the table here.
We have some that are two fins. We have some that are three fins. We have different sizes, and this is because they’re tailored to different parts of the blade. So these three Fin Dragon scales, their focus is ultimate lift. We are creating a really powerful vortex through this combination of three air foils, if you imagine, um, the inside of a Turbo fan.
You have these cascading air force. [00:11:00] You look at the leading edge slacks on an aircraft. You look at the front wing of a Formula one car. It’s that kind of concept.
Allen Hall: It’s like that,
Nicholas Gaudern: and it’s these air force that are cooperating with each other.
Allen Hall: Right.
Nicholas Gaudern: To end up with a more beneficial result. ‘
Allen Hall: cause an air force by itself does a function, but when you combine airflows together in the right way
Nicholas Gaudern: Exactly.
Allen Hall: You can really control airflow efficiently, less losses. More of what you want out the backside. Yeah, exactly. It’s, it’s the backside you’re trying to work on, on a VG or, or dragon scales. You’re trying to create this flow which gets the airflow back onto the blade to create power. We,
Nicholas Gaudern: we want as much attached flow as possible and down exactly down in the roots of a blade.
We have to have really thick aerofoils, you know, blades about round. They’re basically cylinders.
Allen Hall: Yeah.
Nicholas Gaudern: And that, that’s essential, right? We have to have the blade take a lot of load into the root aerodynamically. They’re horrible.
Allen Hall: Yeah.
Nicholas Gaudern: So this is where these, uh, these powerful Dragon Scale VGs come into play because what they do is they’re [00:12:00] reenergizing the flow over the aerofoils, and they’re ensuring that that flow remains attached for much, much longer than if those bgs weren’t there.
So down in the root, you’ll get significant boosts to the lift that those sections can generate. And what’s more lift? It goes to more torque, it goes to more power, goes to more a EP. So these dragon scale VGs in the root are there to boost, lift, and boost EP out on the tip of the blade. Things are actually a little bit different because it’s way different.
You shouldn’t really have stall there to begin with if your blade’s been designed well.
Allen Hall: But if you have leading edge erosion exactly. Or some other things that are happening, you can have real aerodynamic problems.
Nicholas Gaudern: So yeah, as soon as you have erosion, uh, maybe your stall margin is not as big as you thought it was.
You’re starting to get some significant losses of lift Yes out towards the tip of the blade. So that’s where these, uh, TwoFin uh, variants come in. So it’s still a dragon scale vg, it’s still the same concept of these cascading error foils. Yeah, but these are [00:13:00] designed for basically ultimate lift to drag ratio.
Mm-hmm. So we don’t really want more maximum lift outta the tip. We kind of have enough, but what we do want is to keep stable attached flow and we want to do it for the less, uh, least drag penalty possible. So basically we want to get rid of as much parasitic drag as we can. These two fin dragon scales, we are seeing 25 plus percent improvements in lift to drag ratio.
Compared to a standard triangle vg. I mean that’s huge.
Allen Hall: That that is really
Nicholas Gaudern: huge.
Allen Hall: That’s huge, right? Because people have seen these, uh, triangular VGs in a lot of places. And one thing I’m noticing more recently is that those VGs, because they’re so draggy, they tend to flutter and they tend to break in just off.
Nicholas Gaudern: Interesting.
Allen Hall: So you’re having this failure mode because this thing is just blocking the air, getting the air to trip.
Nicholas Gaudern: Yeah.
Allen Hall: It’s not efficient. It does have its downsides ’cause it is. D definitely drag. Just face it, it’s it, is it a draggy [00:14:00] 1940s technology? That’s what it is. Where with the dragon scales, now we’re doing things a lot more efficiently and thinking about how do I get the airflow that the blade designer originally wanted?
Nicholas Gaudern: Yes,
Allen Hall: because the blade designer, they’re really intelligent people. They’re, they’re sitting designing blades. But the reality is what you design is on an ideal airflow, and what you have out in service are totally different things. As, as it turns out, the shape of the airflow is not what you think it is because it comes out of the tool and there’s a lot of touching with by humans that are grinding on the leading edges and doing the things that have to be done to manufacture it.
So you don’t really have an ideal blade when it comes out of the
Nicholas Gaudern: No. You
Allen Hall: never do factory. No, you never do.
Nicholas Gaudern: And it’s not polished either.
Allen Hall: It’s not polished. Right. So
Nicholas Gaudern: when you go to the wind tunnel, you have a perfect profile. Yes. And it’s polished. And it works basically. It
Allen Hall: works great. It
Nicholas Gaudern: works great.
Allen Hall: The theoretical and the actual match.
Yeah. In reality they do. I think a lot of operators are not [00:15:00] connected with that reality of, Hey, that Blade should be producing this amount of revenue for me, and it’s not. And you hear that discussion all the time, particularly in the us. It should be producing this amount of power. I’m doing all the calculations.
We are not producing that power. Why? The blade length’s saying, but the power’s not coming out of it. Well take a look at your leading edge, take a look at your yard full of shape and realize you’re going to have to do something like dragon scales to get that E energy. Exactly. Revenue back.
Nicholas Gaudern: You need to do a full aerodynamic health check.
Basically you do. And see what are all the possibilities to improve my blade performance. And some of it is down to the fundamental shape of the blade,
Allen Hall: right?
Nicholas Gaudern: But some of it is down to blade condition. Yes. Blade Blade manufacturing quality.
Allen Hall: Yes.
Nicholas Gaudern: Uh, what kind of paint did they put on it? What day of the week was it made?
And all these things can be compensated for by VGs and you’ll get more revenue out at the end.
Allen Hall: You say? ’cause what happens? The, the, the scenario which is hard to visualize unless [00:16:00] you’re an A and emesis, is that there comes on the suction side, and it should be, in a ideal sense, rolling all the way to the back edge of the blade and coming off.
What happens is though, is that. When you get leading edge erosion is that the air flow actually separates. Yeah.
Nicholas Gaudern: It
Allen Hall: doesn’t
Nicholas Gaudern: always make it, yeah.
Allen Hall: Doesn’t make it to the back edge. Yeah. And so you can see that, especially if, if there’s dirt in the air, you can look on dirty blades, you can see where that separation line is, and a lot of operators have sky specs, images or Zeit view images, and then go back and look at the blades.
It takes two minutes to go. I have
Nicholas Gaudern: particularly down in the root, you’ll see it.
Allen Hall: Oh, in the root all the time. You, you
Nicholas Gaudern: see it really clearly that that separation line
Allen Hall: all the time, you really see that separation line. I’m seeing it more and more up towards the tip. Interesting. That’s where the lightning protection, yeah.
Systems sit.
Nicholas Gaudern: Yeah.
Allen Hall: I see a lot of airflow that is not front to back on the suc. Well, you
Nicholas Gaudern: have a lot of three dimensional flow out there.
Allen Hall: You do towards the tip you do. And you realize how much power you’re losing there. And I think operators are just throwing away money.
Nicholas Gaudern: Yeah, exactly.
Allen Hall: So you could [00:17:00] put dragon skills on it very efficiently, very quickly.
Get that revenue back into your system and it’s gonna stay. So even if leading edge erosion happens, the dragon scales are gonna compensate for it. It’s gonna get the airflow back where it should be.
Nicholas Gaudern: Exactly. And the nice thing about this is, you know, we are building on well over a decade of upgrading turbines with aerodynamic components.
Oh yes. So this technology stands on the foundations of all of that work. In terms of the materials, the work instructions. Um, the fatigue calculate, you know, everything
Allen Hall: Yes.
Nicholas Gaudern: Is built on thousands of installations that we’ve done. Yes. So, although it’s a new technology aerodynamically, it’s not really new in lots of sensors.
Allen Hall: Well, I look at it this way. If you turn on Formula One today and look at what the new generation of cars running around as you look at the, that front. Yes. Uh. Fin. Yeah. What do I call it? Air foil shape in the front. It’s super complicated.
Nicholas Gaudern: The sculpting of the [00:18:00] surfaces is really impressive,
Allen Hall: right? There’s a lot of thought going into those surfaces versus you turn on a Formula One race or go on YouTube and look at a Formula One race from the 1980s.
Yeah, it’s basically a piece.
Nicholas Gaudern: Yeah.
Allen Hall: To provide down downforce. That’s it. The aerodynamics wasn’t really there, so we come a long way and a lot of that technology that happens in Formula One that happens in aviation eventually rolls down into. Yeah. Wind.
Nicholas Gaudern: Exactly
Allen Hall: right. So we, we, although we are not designing Formula One style blaze today, we’re taking that same knowledge and information and we’re applying that back in.
Nicholas Gaudern: Yeah. We’re
Allen Hall: secondarily we,
Nicholas Gaudern: which is a right thing to do. We’re taking, taking inspiration from all these different aerodynamic fields and, you know, picking the best
Allen Hall: Yes.
Nicholas Gaudern: From what’s available and just allowing ourselves to be a little bit more creative.
Allen Hall: Yes.
Nicholas Gaudern: And thinking outside the box a bit. There’s so many ways to do this as we’ve been saying.
And the import. And the
Allen Hall: data’s there.
Nicholas Gaudern: The data’s there. Exactly.
Allen Hall: The data’s there because you’ve been at the DTU Yep. Uh, wind Tunnel, which also has the acoustic piece to it. Yeah. So you have measured data from a reliable source. [00:19:00] You have field data, and you know, you put all these together, you’re gonna get that improvement back.
You’re gonna get your invest back, you’ll be more profitable.
Nicholas Gaudern: So Dragon Scale, focus on the AP. And that a EP will, uh, vary depending on the turbine.
Allen Hall: Sure.
Nicholas Gaudern: But we’ll assess the turbine and, and decide the best configuration, and then say silent edge. That’s the focus on the noise reduction. And we’re seeing up to five decibels OASP on the field.
It’s, which
Allen Hall: is crazy.
Nicholas Gaudern: It’s even more That’s really good that we were hoping for, you know?
Allen Hall: Yeah.
Nicholas Gaudern: So we, we know this is gonna be a, a great product.
Allen Hall: It looks very interesting.
Nicholas Gaudern: It does.
Allen Hall: It does it. It looks complicated and you think air airflow is complicated. It’s a compressible fluid. It’s not easy to, to just assume it’s gonna do what you think it is.
Yeah. You need to get into the tunnel. You need to replicate, you need to do all that work, which is expensive in time consuming. That’s why you go to someone like Power. Curver knows what they’re doing in the wind tunnel, knows how to measure those things and know when they’re getting nonsense. Out of their computer.
I
Nicholas Gaudern: mean, you, you’ll pay thousands and thousands of [00:20:00] Euros dollars a day to run a wind tunnel.
Allen Hall: You will.
Nicholas Gaudern: You’ve gotta Absolutely. You’ve gotta turn up with your plan in hand, that’s for sure.
Allen Hall: Oh, oh yeah, yeah, yeah. And I think there’s a lot of assumptions because it, aerodynamics is hard. You know, you watch these blade spin around, you don’t realize how complicated these devices are.
They are complicated. Those air force shapes we are running today have been through a lot of history, a lot of history to get to where we are now. Now we’re just gonna take him into the next generation. This, we’re bringing ’em into the two thousands. In sort of a
Nicholas Gaudern: sense, what I’m hoping to see is, you know, with the OEMs, some OEMs do it already, but it’s important to think about these components when you’re designing new blades as well, you should because then that will allow you a much bigger design space to work in.
And
Allen Hall: a lot less customer complaints.
Nicholas Gaudern: Yes.
Allen Hall: Where’s my power?
Nicholas Gaudern: Exactly. You know, these products, particularly the VGs, are really important tools for PowerCurve robustness. And some OEMs have known this for a long, long time.
Allen Hall: Yep.
Nicholas Gaudern: And you’ll see VGs on most of their blades. Mm-hmm. Others not so much. And that’s a design choice.
It’s a design philosophy. Um, and I think it may not [00:21:00] be the right one, you know?
Allen Hall: Well, I think the operators are asking to get the most out of their turbines. Yeah. Why shouldn’t they? They should be asking for that.
Nicholas Gaudern: I think for a, for a long time, and it’s not just in wind devices, like these have been considered, you know, band-aids fixes when you’ve, you’ve messed something up.
But I feel that’s a really negative way to think about products like this. They’re doing something that the kind of raw air fall shape on its own cannot achieve. Sure. Oh no. Right. You know, you might be able to mold some interesting stuff. Uh, as part of the blade, it’s very difficult to, to recreate the kind of aerodynamic effects that these products, uh, have.
Allen Hall: Right.
Nicholas Gaudern: So they shouldn’t be considered bandaids or fixes. No. They should be considered opportunities. And ways that you can maximize performance and unlock areas of the design space that previously weren’t accessible to.
Allen Hall: Sure. Every possible component that deals with fluid air is moving this way.
Nicholas Gaudern: Yes.
Allen Hall: Jet engines, you look at jet engine, how much more is going into those jet engines today in terms of this kind of [00:22:00] technology?
Yeah. All the race colors, doesn’t matter what class, where it is, is all looking at this anything to do with aircraft, it’s all over this.
Nicholas Gaudern: Yeah,
Allen Hall: exactly. Or, or doing this today. It’s just wind that’s behind
Nicholas Gaudern: wind. Wind is
Allen Hall: significantly
Nicholas Gaudern: behind. No,
Allen Hall: it’s not magic. It’s proven technology. It’s
Nicholas Gaudern: just good engineering.
Allen Hall: Well, it’s good engineering and if you call PowerCurve, they’re gonna help you under to to, to understand what you have today and what you could have tomorrow.
Nicholas Gaudern: Yes.
Allen Hall: And how this, these devices will improve your revenue stream.
Nicholas Gaudern: Exactly. You know, we will look at your blades, we’ll give you some good advice and maybe that advice will be that.
You know, a certain product isn’t right for your blade. Right. That’s fine.
Allen Hall: That’s an answer.
Nicholas Gaudern: That’s an answer.
Allen Hall: Yeah, it is.
Nicholas Gaudern: But let’s, let’s look at the blade. Let’s see what’s possible, and let’s just have a, have a proper conversation about it over some real data, some real
Allen Hall: facts. Right. I think that’s the key, and a lot of operators are afraid to talk about aerodynamics is it’s, it’s a difficult area to, to start the conversation on, right?
Yeah. But I think at the end of the day, when I work with PowerCurve, and I’ve worked with you guys for a [00:23:00] number of years, the answers I get back are intelligent and they’re not. Super complicated. This is what you’re gonna see. This is the improvement. And then we can, this is how we’re going to show you can get that improvement.
It’s not magic,
Nicholas Gaudern: no
Allen Hall: power crews backing up with data, which I think is the key, right? Because you’re the, you do hear a lot of noise in this industry about magical products that’ll do all these things. Particularly aerodynamic ones. Yes. PowerCurves, the ones really bringing the data.
Nicholas Gaudern: Yeah. And we have, we have the track record now.
We have like we do 17, 1800 turbines. Should be over 2000 very soon with our products on. Yeah. So we have a lot, we have a lot of data to draw on to know that we’re doing a good thing.
Allen Hall: Well, and speaking of that, because one of the questions that always pops up is, well, we have put these new VGs or trailing edges on, are they gonna stay on?
How durable are they?
Nicholas Gaudern: Yeah. And that’s a, that’s a really important question to ask was it doesn’t matter how fancy aerodynamic product is, if it falls off the blade.
Allen Hall: Right.
Nicholas Gaudern: So, you know, we’ve spent a lot of, uh, time and effort looking at how we should be fixing these products on. [00:24:00] So we use a, uh, a wet adhesive.
We specify a plexus adhesive to put our products in place. Really good adhesive. It’s a great adhesive and it means that they are not going anywhere. Basically. It’s a very, uh, forgiving adhesive. Uh, and it’s a very high spec. So we, we don’t use, uh, sided tape. We might have some of our products for some initial tack to help, you know, get the clear, the clear outta the line exactly.
But in terms of the bond itself, that is with a, a proper structural adhesive. So one thing that we are really proud of is that we haven’t got any, uh, reported failures of our panels over all the installations we’ve made. And that’s a combination of materials, but also geometry, work, instructions, adhesive.
It’s, it’s the full package. So it’s something that, um, yes, say we’re very proud of. And I think it’s, it’s a big part of what we do at PowerCurve, making sure the product is the right shape. Sure. But also making sure it stays on the blade.
Allen Hall: Well, you see it [00:25:00] from OEMs who have all kinds of aerodynamic treatments on there, and they’ll double set a tape to the blade, and then those parts are on the ground.
Nicholas Gaudern: Yeah. And double-sided tape. You can get some really nice spec tape. Sure.
Allen Hall: You,
Nicholas Gaudern: yeah. But it’s not
a
Allen Hall: 20 year device.
Nicholas Gaudern: No. And the installation tolerance required on surface prep is really, really high. So it’s possible. It’s just harder. I think it’s riskier,
Allen Hall: it’s risky.
Nicholas Gaudern: So, you know, I think for us, the adhesive is, is the way to go.
And, and it’s been proven out by the, by the track record.
Allen Hall: And some of the things we’ve seen over in Australia is when trailing ulcerations have come off, it’s been a safety concern. So now you got
Nicholas Gaudern: absolutely
Allen Hall: government officials involved in safety because parts are coming up. Turbine.
Nicholas Gaudern: Yeah.
Allen Hall: You
Nicholas Gaudern: can’t have these components flying, flying through the air.
That’s, that’s not safe.
Allen Hall: That’s because PowerCurve has done the homework.
Nicholas Gaudern: Yes.
Allen Hall: And has the track record. That’s why you wanna choose PowerCurve. So how do people get a hold of PowerCurve? How do they get a hold of you, Nicholas, to start the process?
Nicholas Gaudern: So, um, you’re welcome to reach out to us in lots of different ways.
We’re on LinkedIn. Uh, we have our website, [00:26:00] PowerCurve, dk, um, so yeah, LinkedIn websites. There’ll probably some links on this podcast as well to get in touch. But, um, yeah, whatever way works best for you.
Allen Hall: Yeah, it’s gonna be a busy season. So if you’re interested in doing anything with PowerCurve this year, you need to get on the website, get ahold of Nicholas.
And get started, uh, because now’s the time to maximize your revenue.
Nicholas Gaudern: Thanks a lot and great to talk to you,
Allen Hall: Nicholas. Thanks so much for being back on the podcast.
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