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LM Wind Power Cuts 60% of Denmark Staff
The crew discusses LM Wind Power’s dramatic layoff of 60% of remaining Danish staff, dropping from 90 to just 31 workers. What does this mean for thousands of wind farms with LM blades? Is government intervention possible? Who might acquire the struggling blade manufacturer? Plus, a preview of the Wind Energy O&M Australia 2026 conference in Melbourne this February.
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If you haven’t downloaded your latest edition of PES Wind Magazine, now’s the time issue four for 2025. It’s the last issue for 2025 is out and I just received mine in the Royal Mail. I had a brief time to review some of the articles inside of this issue. Tremendous content, uh, for the end of the year.
Uh, you wanna sit down and take a good long read. There’s plenty of articles that affect what you’re doing in your wind business, so it’s been a few moments. Go to peswind.com Download your free copy and read it today. You’re listening to the Uptime Wind Energy Podcast, brought to you by build turbines.com.
Learn, train, and be a part of the Clean Energy Revolution. Visit build turbines.com today. Now here’s your hosts, Alan Hall, Joel Saxon, Phil Totaro, and Rosemary Barnes. Welcome to the Uptime Wind Energy [00:01:00]Podcast. I’m your host, Alan Hall in the Queen city of Charlotte, North Carolina. I’ve got Yolanda Padron in Texas.
Joel Saxon up in Wisconsin and Rosemary Barnes down under in Australia, and it has been a, a really odd Newsweek. There is a slow down happening in wind. Latest news from Ella Wind Power is they’re gonna lay off about 60% of their staff in Denmark. They’ve only have about 90 employees there at the moment.
Which is a dramatic reduction of what that company once was. Uh, so they’re planning to lay off about 59 of the 90 workers that are still there. Uh, the Danish media is reporting. There’s a lot of Danish media reporting on this at the moment. Uh, there’s a letter that was put out by Ellen Windpower and it discusses that customers have canceled orders and are moving, uh, their blade production to internal factories.
And I, I assume. That’s a [00:02:00] GE slash Siemens effort that is happening, uh, that’s affecting lm and customers are willing to pay prices that make it possible to run the LM business profitably. Uh, the company has also abandoned all efforts on large blades because I, I assume just because they don’t see a future in it for the time being now, everybody is wondering.
How GE Renova is involved in this because they still do own LM wind power. It does seem like there’s two pieces to LM at the minute. One that serves GE Renova and then the another portion of the company that’s just serving outside customers. Uh, so far, if, if you look at what GE Renova paid for the company and what revenue has been brought in, GE Renova has lost about 8.3 billion croner, which is a little over a billion dollars since buying the company in 2017.
So it’s never really been. Hugely profitable over that time. And remember a few months ago, maybe a month ago now, or two months ago, the CEO of LM [00:03:00] Windpower left the company. Uh, and I now everyone, I’m not sure what the future is for LM Windpower, uh, because it’s, it has really dramatically shrunk. It’s down to what, like 3000 total employees?
I think they were up at one point to a little over when Rosie was there, about 14,000 employees. What has happened? Maybe Rosemary, you should start since you were working there at one point.
Rosemary Barnes: Yeah, I dunno. It always makes me really sad and there’s still a few people that I used to work with that were there when I went to Denmark in May and caught up with a bunch of, um, my old colleagues and most of them had moved on because a lot of firing had already happened by that point.
But there were still a few there, but the mood was pretty despondent and I think that they guessed that this was coming. But I just find it really hard to see how with the number, just the pure number of people that are left there. I, I find it really hard to see how they can even support what they’ve still [00:04:00] got in the field.
Um. Let alone like obviously they cut way back on manufacturing. Okay. Cut Way back on developing new products. Okay. But you still do need some capabilities to work through warranty claims and um, you know, and any kind of serial issues. Yeah, I would be worried about things like, um, you know, from time to time you need a new, a new blade or a new set of blades produced.
Maybe a lot of them, you know, if you discover an issue, there’s a serial defect that doesn’t, um, become obvious until 10 years into the turbine’s lifetime. You might need to replace a whole bunch of blades and are you gonna be able to, like, what’s, what is gonna happen to this huge number of assets that are out there with LM blades on there?
Uh, I, yeah, I, I would really like to see some announcements about what they’re keeping, you know, what functionality they’re planning to keep and what they’re planning to excise.
Joel Saxum: But I mean, at the end of the day, if it’s, if [00:05:00] the business is not profitable to run that they have no. Legal standing to have to stay open?
Rosemary Barnes: No, no, of course not. We all know that there, there’s, you know, especially like you go through California, there’s all sorts of coast turbines there that nobody knows how to maintain them anymore. Right. And, um, yeah, and, and around there was one in, um, in Texas as well with some weird kind of gearbox. I can’t remember what exactly, but yeah, like the company went bankrupt, no one knew what to do with them, so they just, you know, like fell into disrepair and couldn’t be used anymore.
’cause if you can’t. Operate them safely, then you can’t let no one, the government is not gonna let you just, you know, just. Try your luck, operate them until rotors start flying off. You know, like that’s not really how it works. So yeah, I do think that like you, you can’t just stay silent about, um, what you expect to happen because you know, like maybe I have just done some, a bit of catastrophizing and, you know, finding worst case scenarios, but that is where your mind naturally goes.
And the absence of information about what you can expect, [00:06:00] then that’s what. People are naturally gonna do what I’ve just done and just think through, oh, you know, what, what could this mean for me? It might be really bad. So, um, yeah, it is a little bit, a little bit interesting.
Allen Hall: Delamination and bottom line, failures and blades are difficult problems to detect early.
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Miss C-I-C-N-D-T Maps. Every critical defect delivers actionable reports and provides support to get your blades. Back in service, so visit cic ndt.com because catching blade problems early will save you millions. Yolanda, what are asset managers [00:07:00] thinking about the LM changes as they proceed with orders and think about managing their LM Blade fleet over the next couple of years, knowing that LM is getting much smaller Quicker?
Yolanda Padron: Yeah, and this all comes at a time when. A lot of projects are reaching the end of the full service agreements that they had with some of these OEMs, right? So you already know that your risk profile is increasing. You already know. I mean, like Rosie, you said worst case scenario, you have a few years left before you don’t know what to do with some of the issues that are being presented.
Uh, because you don’t count with that first line of support that you typically would in this industry. It’s really important to be able to get a good mix of the technical and the commercial. Right? We’ve all seen it, and of course, we’re all a little bit biased because we’re all engineers, right? So we, to us it makes a lot of sense to go over the engineering route.
But the pendulum swung, swung so [00:08:00] far towards the commercial for Ella, the ge, that it just, it. They were always thinking about, or it seemed from an outsider’s point of view, right, that they were always thinking about, how can I get the easiest dollar today without really thinking about, okay, five 10 steps in the future, what’s going to happen to my business model?
Like, will this be sustainable? It did Just, I don’t know, it seems to me like just letting go of so many engineers and just going, I know Rosie, you mentioned a couple of podcasts ago about how they just kept on going from like Gen A to Gen B, to Gen C, D, and then it just, without really solving any problems initially.
Like, it, it, it was just. It’s difficult for me to think that nobody in those leadership positions thought about what was gonna happen in the [00:09:00]future.
Rosemary Barnes: Yeah. I think it was about day-to-day survival. ’cause I was definitely there like saying, you know, there’s too many, um, technical problems that Yeah. When I was saying that a hundred, a hundred of versions of me were all saying that, a lot of us were saying it.
Just in the cafeteria amongst ourselves. And a lot of us, uh, you know, a bit more outspoken Danish people don’t really believe a lot in a strict hierarchy. So certainly people were saying it to directors and VPs and CEOs, but, um, yeah, it was, uh, I think it was more about like the commercial reality of today is that there won’t be a commercial.
Tomorrow to experience these engineering problems if we don’t make these, um, decisions. Now, if, if that makes sense. As a really complicated way of saying we need to be able to sell this product, otherwise we’re not gonna sell anything. And then no one will be, no one will have a job in 10 years regardless.
So. We’ll solve, you know, whatever quality problems that arise from doing too many new technologies at once, at [00:10:00] least we’ll be, the company will still exist to be able to have a go at solving them if we, you know, make these sales. Um, which it won’t if we don’t. So I think that that would be the, like the other point of view, like it’s really easy to say now, oh yeah, we should have, um, we shouldn’t have done that, but yeah, I, I’m pretty sure management’s gonna tell you why they did it is for the sales.
Joel Saxum: This is an odd case being lm an ex Danish company now owned by GE Renova, which is a US based company.
Allen Hall: Global.
Joel Saxum: Global really. But yeah, but when we get into this, too big to fail type thing, right? So like Siemens cesa, having the German government back them up with a note, um, when they were having troubles a year and a half ago.
Uh. Is there a award like the too big to fail in the United States where the government bailed out the auto worker or the auto manufacturers and stuff like that. I don’t see that happening here because the company’s too small. But at what level do governments [00:11:00] intervene? Right? So it’s, I know every government’s gonna be different and every, but there’s have their own criteria and there’s not a hard set, probably line or metric of like, oh, you have this much impact on society, so we must support you to make sure you survive.
Well, when Rosemary, when you say like in, when you were there, you were there five years ago, 2020, right before COVID. Right. At that point in time, 20% of the world’s blades were LM blades of the global fleet. Well, if that’s was true still, that would be a hundred thousand plus turbines in the global fleet.
That would be LM blades. And if we have. Issues with them and we can’t solve them. I think one, one of the, one of the things that we’re, that we’re probably thankful for is there is that many, so there has been a lot of independent engineering expertise that’s been able to fix some of them. A lot of independent ISPs, you know, out there, service companies, blade repair companies that have been able to figure out how to make these things even, you know, regardless of getting the layup pattern or layup designs or any kind of engineering information from, from Malam [00:12:00] or from the OEMs.
Um, we have been able to maintain them, so that’s good. But is there a level where, I know Alan, you were shaking your head, but is there a level where anybody steps in from a government standpoint to save lm?
Allen Hall: I would almost bet that Renova has talked to the Danish government. Somebody at LM has, I would have to think that they have already.
And has been, at least in the press, no response. And with this latest announcement, it doesn’t seem like the Danish government wants to be involved. So my, my take on it is they have an American stamp on ’em right now, and Denmark and the United States are not playing nice to one another. So why would I help ge?
Why would I do that? And that’s not a bad response.
Rosemary Barnes: Potentially it wouldn’t even have to be necessarily the US or the Danish government that might have to get involved, because I know in Australia, and I’m, I can’t believe it’s different anywhere else. You have to be able to safely operate, uh, an asset like a, a wind turbine.
And that’s, um, some, [00:13:00] a responsibility of both the asset owner and the operator, but also the manufacturer and so they can compel to provide the information that you need to operate safely. I’ve always wondered how, um, ’cause you know, all the OEMs not talking, uh, LM or GE specifically here, they, they don’t really give away enough information to, um, operate assets safely, in my opinion.
So that is the key thing that you just, you can’t lose otherwise. You’re going to end up with blades that have to be scrapped or that you have to, you know, guess that it’s probably okay and then see how it goes. And, you know, that’s. Good a lot of the time, but it’s, it’s gonna make things less safe into the future.
You would expect to see more blade failures if you saw that happening a lot. So, you know, I would at least wanna make sure that you’re keeping, keeping people, keeping those models and keeping the people that know how to run them. Enough of them around. [00:14:00] Or making them publicly available.
Allen Hall: Don’t miss the UK Offshore Wind Supply Chain Spotlight 2025 in Edinburg on December 11th.
Over 550 delegates and 100 exhibitors will be at this game changing event. Connect with decision makers, explore market ready innovations and secure the partnerships to accelerate your growth. Register now and take your place at the center of the UK’s offshore Wind future. Just visit supply chain spotlight.co.uk and register today.
How soon before ING Yang puts in an offer to buy LM and or TPI? That’s gonna happen in the next six months. It has to.
Joel Saxum: What about instead of buying the factory, what if someone rises from the ashes and just buys the molds?
Allen Hall: I think you have to eat the workers. I think that’s gonna be the trouble,
Joel Saxum: but I don’t think you want them.
Allen Hall: Wow. That’s a hot take.
Joel Saxum: But honestly, like the quality coming out now, and I’ll, and I will caveat this as well, the [00:15:00] quality is not their, the quality is not all their fault. The quality of some respects is the way it was designed for manufacturing. But there is issues that we have seen and has been, have been uncovered that have been in the news, in the, in the free press that show that stuff happening in factories that shouldn’t be happening.
So do you actually want that or do you, this is why I say someone rises from the ashes and, and or, and creates something with a bunch of inco, you know, like knowing the pitfalls and the, the, the things that have happened that are bad, the things that can go well that are good. You know, when we talk to some of the people in the industry that have been around blade manufacturing, and they, and they have told us, man, we’ve seen.
Quality, uh, control mechanisms thrown on the shelves, even though we know they work just because people, defactor didn’t wanna use them for whatever reason. I don’t, you know, you don’t know, um, whether it’s inspection, whether it’s, you know, robotics this, or whether it’s [00:16:00] this solution here. Like there’s a possibility that we could do this way better.
Maybe there’s this case right now where someone is like, you know what, robotics, let’s do this. Let’s try to make it happen. Let’s get rid of this incumbent knowledge of automated blades and start fresh from a. Scratch
Allen Hall: my other hot take was GE sells their wind business,
Joel Saxum: the entire wind business.
Allen Hall: Yeah.
Joel Saxum: To who
Allen Hall: Ing Yang or somebody?
Anybody,
Rosemary Barnes: if they wanna do that, I’d recommend doing it in the, um, current administration would probably be the most likely to allow that to happen because I would imagine that, uh, another time that people might not be so happy that, uh, the US has therefore no wind turbine manufacturer.
Allen Hall: Does anybody else not think so that that’s a possibility.
They’re not listening to offers right now.
Joel Saxum: I would say Mitsubishi maybe. I don’t think Ming Yang. I don’t think some, I don’t think a Chinese, no, but I do think a Korea and a Japanese, a German
Allen Hall: could do it.
Joel Saxum: Yeah. Well, that would entertain the offer. [00:17:00]
Rosemary Barnes: What about one of the large ISPs buying, you know, the ability to, you know.
Properly, properly service blades for, you know, many, many, many manufacturers. There’s a lot of knowledge that you’d get there. Um, the ability to replace blades, maybe it splits into two and there’s, you know, one company takes it for manufacturing into the future, and which case they’re probably just buying factories and not really worried about much else.
And then somebody else buys molds and, um, knowledge. Models, those sorts of things
Joel Saxum: as a pitch for what exactly what you’re saying. So now let’s go back to, um, was it Larry Fink who said that they’re in investing in infrastructure, big time in the future, energy infrastructure is the future, da, da, da. And they, or like BlackRock’s been throwing money at everything, right?
They’ve been just buying, buying, buying, buying, buying. If some, someone came to them with the right [00:18:00] plan, there’s where your capital could come from. Who is it? Right? You know, that there’s players out there that may not be in the ISP world, I think is, p is interesting, Rosemary, but like a, a next era that’s like this with GEs,
Allen Hall: Adani,
Joel Saxum: a Donny’s in too much hot water to to, to make a deal with that, to let the SEC allow that.
Rosemary Barnes: Here’s my hot take. So LM started at the lm, it stands for lco Mills Fabric, which means, um, furniture manufacturer, right? So they started out making furniture, then they were making, um, caravans, I believe, and then there were, so that was all wood. Then they started making caravans outta fiberglass. Then they started making boats because those are also fiberglass and wood kind of things.
Then they moved into wind turbine blades and became LM glass fiber. So now they’re only doing fiberglass things. And then it was LM wind power. They only were doing wind power. Maybe, you know, [00:19:00] are they gonna go into, I don’t know, making airplanes next, or, or rockets, or are they gonna take a step backwards and, you know, go back into furniture?
Allen Hall: How do you put a value on a company that’s losing money?
Joel Saxum: That’s where I was going, Mr. Hall, October of 2016 when GE bought them, they paid one point. Six, 5 billion US dollars. I don’t think that that’s was probably a too wild of a price back then, but there’s no way that they’re worth that much now with what has has happened.
That being said, say they’re worth, I don’t know, I’m just gonna throw a number out there. Say they’re worth 800 million, half of that. I don’t see that as like a crazy amount for someone else, like Rosemary said, that may be crossing industry silos to pick up. Some factories, some, some composites knowledge, some other things as well, as long as they get, get into it.
With the understanding that this is a fire sale and [00:20:00] things need to be fixed,
Rosemary Barnes: isn’t, um, ozempic Danish? So there must be some, build, some Danish billionaires. Maybe there’s gonna be some national pride that that kicks in and makes somebody want to, you know, like Denmark is quite known for wind power. Um, if you combine, you know, the demise of LM with vest also.
Announcing a whole lot of job cuts. I, it’s not such a fast stretch to think that some Danish billionaire is gonna be like, you know what, Denmark should still have wind industry and I’m gonna make sure it happens.
Allen Hall: No shot. I don’t see it. I, it would be awesome if they did
Joel Saxum: Maersk, lm,
Allen Hall: but Meers doesn’t wanna lose money.
Why you, why would you invest in something that’s going to lose money for the next five years? Who’s doing that today?
Joel Saxum: Let’s just do a little comparison. So TPI claiming bankruptcy the other day when we looked at the Val, the market cap of them, they’re publicly traded. They were a hundred million, weren’t they?
Like a couple, six months ago,
Allen Hall: [00:21:00] $1.5 million.
Joel Saxum: Oh my God. It’s 1.5 million. Do you mean you could buy TPI over 1.5 million?
Allen Hall: I can get a second mortgage and have a pretty good take of that business. It has no value because it’s not making money. You, you’ve, it’s EBITDA times X.
Yolanda Padron: It’d be really interesting to see like an is like them turning into an ISB.
Like I will fix everything that I manufactured, gear, the molds, or like I will replace the parts.
Rosemary Barnes: It’s hard as well. I just make a few blades here or there. Um, because they only get cheap when you make thousands of them. But that said like sometimes people have to pay, at least in Australia, like it’s not uncommon that you need a new blade.
You have to pay a million dollars for it. So in that case, you know, like that’s apparently, you know, TPI, you buy TPI for one and a half and you make two blades in your first year. Then you know,
Yolanda Padron: you make a blade set, you’re done.
Joel Saxum: Yeah. So they were worth a hundred million in market cap a year ago today. [00:22:00] So it’s like a 99.6% decrease since last year.
Allen Hall: When you file bankruptcy, stuff like that happens. Here’s gonna be the rub. Whoever decides to do whatever with it, they’re gonna have to have a lot of cash because I guarantee you vendors have not been paid or. Or vendors are asking for money upfront before they make a delivery, and that’s not the way that GE likes to operate.
GE likes to operate. I buy this thing and then six months later I pay you half and another six months later, I may pay the remaining half. They don’t like to pay things upfront and. It’s gonna be a problem.
Joel Saxum: Net 180, and then on day 179, they’re gonna find a magic error in your invoice and it resets the clock.
Allen Hall: Australia’s wind farms are growing fast, but are your operations keeping up? Join us February 17th and 18th at Melbourne’s Poolman on the park for Wind Energy o and m Australia 2026, where you’ll connect with the [00:23:00] experts solving real problems in maintenance asset management and OEM relations. Walk away with practical strategies to cut costs and boost uptime that you can use the moment you’re back on site.
Register now at WM a 2020 six.com. Wind Energy o and m Australia is created by Wind professionals for wind professionals because this industry needs solutions, not speeches. So looking for something to do in February while America is in the middle of a winter snowstorm. You wanna go to Australia for?
Wind O and M Australia 2026 and it is going to be February, what, Joel?
Joel Saxum: 17th and 18th at the Pullman on the park in sunny. Melbourne
Allen Hall: and Rosemary, what’s on the schedule for the event in Sunny Australia?
Rosemary Barnes: Well, it’s, uh, agenda just full of the topics that Australian operators are talking about at the moment.
Um, there’s, you are gonna be [00:24:00] topics on compliance. Um, also training is a, a big thing. Training and resources to get workforce up to speed. Um, also some on big data and ai, they’re catchy. Uh, yeah, hyped up terms. But can you actually do something useful with it? I mean, you definitely can, but how do you, um, and then just heaps of stuff about just specific asset management problems that people are having be a lot of talking about problems.
And there’s also gonna be a lot of talking about solutions. So that’s kind of the point. It’s the, it’s the place where you can get. Both sides. ’cause I think, yeah, both sides are very important.
Joel Saxum: I think one, one of the things that is was good about the event last year and we’re excited about this year as well, is we tried to fit in as many networking opportunities as we could.
We’ve got a lot of coffee breaks. We’ve got breakfast, we’ve got a cocktail hour, we’ve got lunches, we’ve got all these things, and it’s kind of designed around keeping the whole crew together in one spot. So we’re able to share information, have those conversations. Oh, you have this asset. Oh, I [00:25:00] know this one.
Um, operators, speaking to operators, speaking to ISPs about specialties fixes. What are you doing? Could we implement that in our fleet? Those kind of things, right? And that’s about the, we, we talk on the podcast and in our daily lives regularly. Everybody here in the podcast is about collaboration and sharing information and sharing knowledge, and that’s the way that we’re gonna forward the, uh, industry.
So we’re really excited. Again, again, this is round two. We’re bringing this event down to Australia. Last year was great. I think we had basically every major operator represented, uh, at the event. And we’re gonna repeat that again this year.
Rosemary Barnes: I really like the size of it. Last year, I think we were about 170 or 180, which was our limit for that, that event, we did sell out this year.
We, uh, increased that a little bit to 250. Um, but it’s a good size. It’s not like, I don’t know if there’s any other, um, introverts out there, but usually when I go to an event, I get so exhausted from just. Uh, I don’t know the, the pressure of if there’s [00:26:00] an exhibition hole that you’re supposed to wander around and, you know, like the last conference I went to had like probably 20 parallel streams and it’s just like, what am I supposed to see?
Oh, these sessions all sound similar, which is gonna be the good one. Um, and then you’re trying to meet up with people as well. This event, it’s targeted enough. It’s one session. You’re gonna find probably at least 95% of the sessions interesting if you are working in wind energy, o and m in Australia. So you just go there, you sit down, you watch the interesting information, and every single person that you run into when you at lunch or coffee or whatever, every every single person is gonna be someone you can have an interesting conversation with.
So it’s just. It’s a lot, uh, it’s a lot easier for someone who, I mean, you, Americans, you’re all, uh, it’s like national law, right? That you have to be extroverted. It’s not allowed to be any kind of other personality type in America. But in Australia, there’s a lot of, uh, a lot of introverts. And, uh, I would say that this is a much, much more introvert friendly event than [00:27:00] your typical big, big, broad conference.
Allen Hall: Well, you won’t want to miss Wilma 2026. In order to get, what are those 250 seats, you need to register and you need to register now. So visit wma w om a 2020 six.com and. Get signed in, get registered, and we’ll see you in Australia in February. That wraps up another episode of the Uptime Wind Energy Podcast.
Thanks for joining us as we explore the latest in wind energy technology and industry insights. If today’s discussion sparked any questions or ideas, we’d love to hear from you. Just reach out to us on LinkedIn and don’t forget to subscribe so you never miss an episode. And if you found value in today’s conversation.
Please leave us a review. It really helps other wind energy professionals discover the show and we’ll catch you here next week on the Uptime Wind Energy [00:28:00] Podcast.
https://weatherguardwind.com/lm-wind-denmark/
Weather Guard Lightning Tech
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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