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Uptime’s Guide to Upcoming Wind Energy Events
Allen and Joel discuss the best conferences in the wind industry in the upcoming months. Across the world, the wind industry is coming together to better the industry and share knowledge.
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!
You are 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, Allen Hall, Joel Saxon, Phil Totaro, and Rosemary Barnes.
Allen Hall: Welcome to the Uptime Wind Energy Podcast. I’m your host Allen Hall, and I’m.
Here with Joel Saxum, who’s up in Wisconsin, and Joel and I have been talking back and forth about all the conferences that we need to attend, and it’s going to be that time of year. We need to be planning for the end of your conferences in 25. And then getting, uh, your registrations in for conferences in 2026.
It’s coming up fast, Joel.
Joel Saxum: Yeah, I know. This is the time of year where like blade season is over. A lot of the heavy repair season is over. MCE work starts to get a little bit touch and go depending on where you are. We’re getting into September, October. It starts to snow here soon in some places in the northern, uh, [00:01:00] latitudes.
So it’s also coinciding with that is the time when companies starts. Spooling up their budgets for 26. And those budgets are operations and maintenance budgets. They also include for, you know, depending on the team, you’re on, engineering asset management. It, it is conference budgets and it’s, uh, you know, these things aren’t cheap.
Uh, so that’s one of the complaints that we have globally about a lot of these conferences is, uh, you know, some of ’em are getting up to, it used to be a couple hundred dollars to get in. Now they’re 1500. 2000. I even heard of one to 2,500 to get in the door, which is. A bit extreme. So if I could say anything to the, uh, conference organizers, please stop raising the prices.
But like Allen said, it’s that time of year to start planning these things. ’cause it’s conference, the fall conference season starts kicking back off, uh, at a global way. So, uh, we’re gonna walk through some of those conferences and, uh. Can I share with you our thoughts and the knowledge that we have around some of ’em and where we’ll be?
Allen Hall: Yeah. And the, the first one on the list is one that it’s just gonna pass by the time this podcast comes out, which is hu Some [00:02:00] and Hu Some’s the big energy conference in Germany. And uh, it is. Just massively popular. It has been the, uh, counterpart to, uh, Hamburg every year. So the alternate year to year. So everybody that goes to Hamburg tends to go to Husam, and whoever goes to Husam tends to go to Hamburg.
It’s a great place. There’s a ton of technology there, and anybody that’s of interest in wind needs to go there at least once in their lifetime and see it.
Joel Saxum: Yeah, it’s like a, it’s a wind mecca. Conference. So when we talk Huso, usually it’s more focused on onshore. Hamburg is more focused on offshore, uh, which is really cool to see.
Of course, most companies that are playing in these spaces are dabbling in a little bit of both, whether you’re an ISP or you’re an operator or a financier, whatever it may be. But this is one of those conferences that Allen and I regularly tell people specifically from the North American market, if you haven’t been over to the European conferences, the big European [00:03:00]conferences.
You should go, um, just to see what kind of technology, what they’re doing, what’s a little bit different. Have some conversations with some different mindsets around operations and maintenance or development, or whether it’s greenfield, brownfield, whatever it may be. Because the Europeans are, you know, they’ve been in wind longer than we have over here in, in the North America, so they have some different ways of doing things and different technologies.
We always come back from there with, uh, some good context. I would say that. So, uh, encourage people to travel over there for that one.
Allen Hall: October is when the conference season for companies begins. There’s a lot of user forums happening. Two in particular that, uh, we have been paying attention to the last couple years and participated in.
One is the Sky Specs user forum, or customer forum, which is happening October 7th and eighth up in Ann Arbor, Michigan. Joel and I will be there again this year. Hosting some panels, uh, talking a little bit about lightning protection, uh, part in most of the us uh, most of their customers are in the US but [00:04:00] the Sky Specs event is really, really good.
If you’re interested in optimum maintenance schedules for your turbines, what’s going on with blades and new blades that are out in service? What’s happening there? It’s the way to connect with the industry, at least in the US It is, yeah. This year, the, the,
Joel Saxum: the focus of the event is predict. Prevent perform.
Um, so that they’re gonna talk through a lot of the different, uh, solu solutions that Skys spec has. And it’s not really a sales conversation, so I don’t wanna say that, but it’s, it’s how these things fit. It’s what can be done. And we’ve been, we were there last year as well. And it is, just to be clear, it is an invite only event.
So if you would like to go shoot us an email, um, and we could probably get you in there. But the conference is. Very focused on how to solve problems. You have this problem, this is how you solve it. We’re looking at this strategy, this is how you implement it. Um, we’ve, we’ve ran into this issue at say, end of warranty.
This is how you do these things. Um, and it is a, [00:05:00] I really like it because it’s an, it’s an intimate setting. There’s, you know, 50, 60 people there, and it’s all engineers, asset managers from a, from. Uh, you know, scada engineers do blade engineers. It’s, it’s the group of some of the smartest people in wind. Um, a lot of ’em from the US and North and North American general.
Uh, but yeah, that event, um, we really like that one. So we’ll be up there in Ann Arbor, uh, October 7th and eighth for sure.
Allen Hall: The other one, which is really popular is the Onyx event in Colorado, and it’s in the middle of October, October 14th and 15th. That also, I think that’s an invite only event, Joel, is that right?
Joel Saxum: Yeah. You got to reach out to Onyx. Um, we, we don’t deal with that team directly usually, so if you wanna try to get into that one, you’re on your own.
Allen Hall: Yeah. But I hear great things from it, people that have attended that event. Love it and have usually attend it quite frequently, every year. Uh, if, especially if you’re needing some CMS help or some, uh, specific things with there, there’s a lot of, uh, onyx [00:06:00] systems on a number of turbines, so it came delivered that way.
If you need help or insights as to what is actually happening with your turban, uh, it’s a good place to go. Onyx, we’ve had him on the podcast. Smart people, a good resource, and you should think about going there. The, the first real big open event, uh, in terms of wind energy, particularly o and m, is the wind summit event in Houston, which is the first annual event, October 14th and 15th.
Joel Saxum: Yeah. So that one, uh, down in Houston, I believe it as the, is at the Asian Society, so downtown, um, near the medical center. Uh, it is going to be a lot of, uh, some of the same MA material that we’re familiar with from our Melbourne conference last year. So, uh, again, a lot of value add. You can leave this event, um.
Learning something, something you can bring back to your team to uh, be able to implement to help in the future. And, uh, Allen and I, uh, as well as Rosemary here on the podcast, uh, of course [00:07:00] plus Phil Phil’s about organizing this one. Uh, mostly uh, we will be presenting, we’ll be hosting some panels moderating, um, and sharing some insights.
So that one is in Houston the same time as Onyx is, uh, going on up in Colorado.
Allen Hall: Yeah, the Wind Summit event, you can actually find online@windsummit.org. You can check out the events happening there. Uh, and then Joel and I are look, going to attend or try to attend two events at the same time. I’m not sure how we’re gonna pull that one off, but UK Offshore Wind Supply Chain Spotlight in Edinburgh, Scotland is December 11th, and just before that one is the Mi Plastics, uh, wind Turbine Blades Europe event, which is more of a supply.
Chain for blades, and that’s in Dusseldorf, and I haven’t been to the Dusseldorf event before. However, uh, everybody I talk to that has. Spin to that. Loves it and returns to it if you need anything in terms of sourcing materials, what’s, uh, about to come out in terms of new resin systems, new kinds of fibers, new [00:08:00] technology, uh, things in the factory to make blades, uh, quicker, lower cost.
All that happens in Juel, Dorf Plus, uh, you get to, I think a lot of the OEM blade designers are there, so you can actually cross paths with the people that are designing blades. It’s a, it is a good place to meet. Dusseldorf, uh, in December should be really nice. All the Christmas activities will be in full force.
It should be a good time, but, you know, be prepared. It’s gonna be a little bit chilly, I’m afraid, Joel.
Joel Saxum: Yeah. But I think, uh, uh, at the same time as well, the event in Edinburgh that we’re gonna go to the Ori Catapult, the UK offshore wind, uh, supply chain spotlight. We’re bringing jackets, uh, jackets and boots to both of those events for sure.
Um, yeah, that, that winter ride and Blades, Europe, uh, we’ve been a part of the a MI plastics event that’s kind of a mirror to this one in the states. Uh, Allen, I think you were there last year moderating a few panels.
Allen Hall: Yeah. In Boston.
Joel Saxum: Up in Boston there. And it is, it is a unique event, uh, because most of the blade stuff that we go to, blades or uh, o and m focused is [00:09:00] where are we at now?
Right? Once they’re installed, once we’re doing operations maintenance, once we’re running these wind farms, whereas this one you get access to a lot of knowledge, material knowledge. Um. Science, presentations, technology, and people that are actually designing and building the blades. Um, so you will see some, some aftermarket companies will be there, right?
Such as, I mean like, like, uh, weather guard here with our strike tape product. Um, that is something that can be, you know, applied in the factory as well. So you’ll see some of, uh, the likes of the, of the aftermarket type people like ourselves there, but. It is one of the few events where you can get access to those blade engineers.
So whether you’re really happy with them or you wanna stare ’em straight in the eye, they’re gonna be there and you can have conversation at that time. That one’s exciting. Uh, Dusseldorf as well. A beautiful little town.
Allen Hall: Yeah, it’s gonna be a good time in December.
Joel Saxum: One of the reasons that I’m excited for the ORE Catapult, uh, UK offshore wind supply chain spotlight, Allen is.
There’s gonna be like 80 to 90 exhibitors. It’s only [00:10:00] a one day event. Um, and they’re very keen on making it an even playing field for everybody there. So the goal is to be able to showcase to engineers, asset managers, procurement people, uh, from all of these asset owners and OEMs what is available in the marketplace and from the uk.
So we know some of our friends are gonna be there, like our buddy Bill Slatter over at 11 I who, uh, just was purchased by Onyx. Congratulations, bill. Um, he’ll be there. And so you’ll see those kind of, those, the, some of the smaller companies, some of the bigger companies showcasing themselves. And one thing I wanna flag with this event that I am really, really keen on is I think it’s like 500 bucks to get in the door.
It’s inexpensive. Yeah. Inexpensive. So you get the value out of the thing. You’re not shelling out a fortune. And you get to see the best of the best of what’s happening in the UK market. Uh. To help your wind farms.
Allen Hall: Yeah. Everybody affiliated with that conference swears to me, Scotland, it’s gonna be beautiful in December, so, but if it’s not, there’s plenty of, of, uh, great [00:11:00] whiskey to have, so don’t, don’t sweat it too much.
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And then we get into, uh, January after the holidays, there’s not much going on. Uh, the first big conference is really in February, which is the Wind Energy o and m Australia 2026 event, which Joel [00:12:00] Rosemary. I am helping with, uh, everybody at eLog Ping is helping with, that’s the 17th and 18th of February in Melbourne, Australia.
Uh, we had a, a great attendance last year. It’s gonna even be slightly bigger this year. And I have a feeling ’cause it’s, it’s already starting. Registrations are starting. We’re gonna run outta space here pretty quick here, Joel. Last year
Joel Saxum: we were, we thought to ourselves when we were putting the, in the inaugural girl conference together, if we get a hundred people, that’d be great.
We ended up with like 172 and capacity was 175, had to shut ticket sales off. Uh, so we are actually moving venues for that event this year. We’re gonna cap it at 250 people. Uh, but a, a resounding um, yes from the Australian, uh, wind energy world from that conference as it’s one of the only technically focused o and m.
Again, how can you bring value back from this conference to your company and, and learn something? Uh, one of the things that was really cool last year, we brought in some of our, our [00:13:00] friends and family from the podcast network from around the world, and I think almost every one of those companies has opportunities ongoing in Australia now.
Reason being, if you don’t know the Australian market, it’s, I mean, it is quite literally on an island. Uh, so it’s hard to get people, resources, technology, things down there. Um, and when they do get, uh, opportunities, uh, to fix their problems, they’re keen on it, right? Because it’s. It’s a remote place. The wind farms are far out.
You don’t, uh oh. And it’s not like you’re turning around to go to the, you know, the, the wind turbine store next, next door, grab some parts and go fix a turbine. It’s difficult to keep these things running in a remote and tough environment in Australia. So the, uh, operations and maintenance teams of those wind farms are very keen on solutions.
Um, we. We had a great time down there. Um, thank you to all of the Australian Wind Energy folks that we met. Um, and we will be repeating this year, uh, and it will be bigger and better. So we’re, we’re quite excited about it.
Allen Hall: Yeah. And [00:14:00] if you’re interested in sponsoring that event, just go to Woma, WM a 2026 or get a hold of Joel on LinkedIn and he can get you hooked up there, uh, because they’re gonna.
Run outta space for sponsors. That’s happening very quickly. I’m, I’m really shocked, uh, at how responsive the Australian market is to o and m events because there’s so many non o and m events. I guess this is pretty much the one. Great work that’s happening in Australia. There’s so much to learn too. So if you’re from Europe or you’re in the United States, Canada, even Brazil, uh, if you want to see how resilient and, and, and remarkably efficient, uh, to, to run a wind farm, go check out what what they’re doing in Australia.
And Joel and I had an opportunity after the event last year, we went to a couple of the operators there. I was blown away. I really was blown away. Really efficient teams, super bright, right on top of it. Uh, we’re [00:15:00] doing things in unique but at just smart ways that I, I hadn’t seen in the states. That is why you want to go check out other places because, uh, you know, not only answers lie in Europe and, and Brazil or the States, right?
And those are the big markets, uh, that they fly in places like Australia, which has to be resilient. That’s the beauty of Australia. They’ve taken
Joel Saxum: advantage in a good way of, of entering a wind market in a certain age, right? So they came in, they’ve, they’ve allowed, uh, the, the turbine suppliers, OEMs, this to be these FSA holders for them for a while.
But now as the market matures, they watched the lessons from all the other markets and now they’re taking it, taking it on themselves. Um, so it’s really cool to see them grow. I mean, the, there’s total salt capacity down there is about. 4,700 turbines, but it’s growing. Uh, we’ve been having conversations with a lot of, a lot of wind, a lot of operators are developing right now.
Um, so I would expect that market to grow, grow fast too. Go to
Allen Hall: [00:16:00] Wilma 2020 six.com. Sign up now and get your tickets booked, uh, in March. Uh, American Clean Power was back with OMNS in Orlando. They were, we were in Orlando, what, two, three years ago for OMNS. Uh, pretty good attendance down there. Obviously Orlando is where the Magic Kingdom is, and all the, the fun amusement parks are all down there.
The new Harry Potter, uh, rides and all that are happening. It’s a good place to to go. It’s easy to get in and out of, particularly if, if you’re from Europe, you can fly to Orlando usually cheaply. It’s kinda like going to Vegas without all the gambling. Uh, but. It’s a big event for Weather Guard, lightning Tech, because we’re part of that om and s solution.
So all the, uh, the gearbox people are there, all the equipment, people for technicians, all the tool people are there. It’s really more of a hands-on event than it is a theoretical policy event. This is the [00:17:00] one. I think is the more interesting of the two. Honestly, the, you know, the, a big A CP is fun, but it’s not as hands-on as om and s we get to see everybody too before the blade season starts.
Joel Saxum: Yeah. That’s the big key there is, um, om and s of course, operations, maintenance and safety is what it stands for. Um, so the safety guys are there too, which is, which goes hand in hand the operations and maintenance. Right? They, those are three things that. Bang, bang, bang. So Orlando this year, we were in Tennessee last year.
I know a lot of people complaining that we’re not back in San Diego yet, and hopefully a CP listens and gets us back out to Coronado Island. ’cause that’s always fun out there. Uh, but yeah, so Orlando this year, uh, March in Florida, come on. It’s beautiful. Um, a lot of golf courses around there. If you’re a fan of golfing, this is a good one to take the family to.
Yeah, Lars. Yeah. Yeah. Yeah, we can shout out to our buddy, uh, Kyle Rener from bp. I know he, he’s a fan of the golf course and Matt Segal. Um, so, uh, that’s a, that’s, that’s a, that’s a callback to Phoenix if you guys are listening. Um, but um, [00:18:00] yeah, so that event is always really good. Like Allen said, we get to run into everybody that’s basically dealing with the problems that we here at Weather Guard Solve are there.
Right. So it’s Blade people, it’s the ISPs that are looking for the blade people. The one thing I feel bad for sometime at this event is. The, the asset managers and engineers from the operators. ’cause they get hounded, like, like there’s a bunch of bird dogs falling around, which was all the ISPs. Um, but, uh, yes, a great event.
It is a, this one is, it’s a bit smaller, right? One, we, I think the first oh, M and SI went to is like 1100 people and now it’s about 22, 2300. Um, but it does seem more and more like it’s a. I mean, from the uptime side, right? From our, from our desks. It’s a, it’s a, it’s a network event. It’s a family event.
We’re a constant, it’s just people we know all day long. Coming up to the booth, talking last, last year, uh, we are, we were sitting in the booth with AC 8 83 and of course those guys, uh, goofy Danish Canadians, draw crowd as [00:19:00]well. Um, so lots of good friends, lots of good times. O, m and S is a good event.
Allen Hall: As wind energy professionals, staying informed is crucial, and let’s face it difficult.
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Visit PES win.com today. The one blade event that does happen in, in the US is Blaze, USA, which happens in February. It looks like it’s what, 23rd or 24th this year down in Austin, Joel?
Joel Saxum: Yeah. So you and I will just be coming back from Australia, um, and then turn around and have that event. Luckily it’s in my hometown, so I only have to drive down 45 minutes.
You have to fly. Uh, but Blades us a is a, it’s the Perennial Blade event, uh, that everybody likes to go to in the States. Um, Austin again in February is nice, but, um. I [00:20:00] know this year I’ve talked with the organizers a little bit and they’re, they’re wanting to, uh, freshen up some of the material. You know, we’ve been talking about the same kind of inspections and strategy and stuff the last few years, so I would expect to see a bit of a refreshed, um, lineup for panelists in those kind of panels.
Um, at that event.
Allen Hall: Well, it should because of the change in the production tax credits. The whole landscape has changed in terms of operation and maintenance on blades in particular. Obviously gear boxes are a problem. Sure. But blades tend to be the, the bigger overall problem and uh, getting everybody together to talk about how to keep blades running 20 years instead of 10 is something that we haven’t really done in the United States in a long time.
Uh, obviously. The expertise lies within the operators generally, but, uh, you, you gotta, it’s just a different reframe to a problem that we’ve been solving by putting new blades [00:21:00] on every 10 years. And if you want to get the latest info of what operators are doing or how they’re trying to approach this problem, you need to get down to Austin.
So to register for the blade USA forum. Go to ablate usa forum.com. I think you, the registration page is up. You can actually book a spot at that event. Uh, what’s the general size of that event, Joel? It’s a couple hundred people, roughly 200 maybe? Uh, yeah,
Joel Saxum: a hundred and seventy five, two hundred, something like that.
Um, I, I, I would say when you’re trying to figure out the event, um. If you’re working on a work computer, I would caution you to not type in Blades USA or you’re gonna get blocked ’cause you’ll get a bunch of knife websites. Um, but yeah, as Allen was saying, and, and this is less of a focus on conferences here, but this is just a conversation we’ve been having ongoing on the podcast and the background and whatnot.
Is that, and with operators and ISPs and then the as market, is that the changes from this one big beautiful bill act [00:22:00] and how it’s going to impact wind operations for the next. For the foreseeable future. We don’t know what can happen in four years, eight years, whatever it may be. Uh, but we are looking at a, a big change in how we’re gonna operate.
Wind turbines, uh, blades being a very specific one, right? Because, uh, again, PTC Repower, Hey, at 10, 11 years old, let’s just fix these things. Whereas now you need to extend the life, um, and have a, you know, tracking remaining useful life. What does strategy look like? When do we put on LEP now, because that strategy all changes when you’re gonna just decommission these blades before.
Do we add a product, like a strike tape? Do we add zgs? What do we do here? So a lot of these conferences in the United States, and I’m gonna say. Sky Spec user forum will touch on it. Um, the, of course the blades, USA conference will touch on it. A-A-C-P-O-M-S there’s gonna be big, big conversations about it that is gonna be a big part of the conversation and win for the next few years while we, um, are staring at [00:23:00] these big strategic or tactical changes within management.
Allen Hall: Yeah. And I, and with the blades, USA, this may be a, just a really unique year. It would be good to have more OEM presence there. Uh, I think there’d be a lot of questions about how are we gonna maintain these blades? And obviously the people that designed the blade should have a, a pretty good idea about that.
But also, uh, people coming up from Brazil or even Spain and, you know, a lot of the turbines in Spain are kind of reaching that end of life period. Some of the UK it is kind of spread around Europe actually. It would be good to have some people, knowledgeable people come over to that blade USA conference and get on stage.
Talk about how they’re approaching this problem where you don’t have the financial incentives to, uh, remove and replace the blades every 10 years. How do you deal with this issue? I know there’s a lot you and I, Joel, have here. All kinds of operators talk about all kinds of things at the minute.
Everybody’s just really trying to understand the scope of the problem. They got a year or two to figure it [00:24:00] out, but. Come 2026, you better start forming a plan. ’cause you’re, honestly, we’re not even really sure what’s gonna happen in 2026 at this point. As fast as things are changing in the us who knows?
Joel Saxum: Yeah, I can see. So, back at the beginning of this conversation, we started this episode of the of the Uptime podcast. Here. We talked a little bit about, Hey, it’s the end of blade season. People are starting to set their budgets for 26 budgets, meaning operations and maintenance, how much we’re gonna spend per turbine, blah, blah, blah, blah, blah.
Uh, I have heard from a few operators that they are actually increasing their blade repair budgets. Two reasons. Yeah, two reasons. Partially because they’re behind on blade repairs, right? They’re running into like, Hey, we ran outta budget this year again, right? So they’re, the, the blade repairs, they, they’re running outta deficit to get things done with the budget they’ve had.
So that is starting to stack upon itself. So now they have to inject, uh, a larger amount to get it up to speed at this time. Compounding on that is [00:25:00] the same idea. Hey, you’re not gonna get PTCs right now, you’re, unless you got a repower basically in the works and you’ve got something either safe harbor or turbines quoted on delivery before July 4th of next year.
You’re in a tough spot. So I could see some budgets that some of these operators changing, um, for the 2026 fiscal year. Um, now I haven’t heard specifically like from anybody that’s like, yeah, we’re increasing by 21.6%. I haven’t heard that. Um, but I, I have heard whisperings of changes happening in that world.
Allen Hall: Well, and I think if you’re an engineer or technician at some of these companies. It’s good to invest in yourself and obviously if your company will pay for you to attend these events, great. Love it, right? Definitely put in for it. Hopefully the operators, uh, will pay for this educational trip. That’s exactly what it is, right?
It’s, it’s a way for everybody to get spooled up to, to learn a bunch of things. But sometimes, you know, you know, the first thing to go [00:26:00] after marketing is travel budgets. And, uh, if you don’t have a travel budget. And you plan to stay on in wind, you need to do a little spending on yourself. Some of these conferences are relatively easy to get to.
Blades. USA is an easy one to get to in Austin. Uh, a CP in Orlando, OMS is easy to get to. You’re not gonna spend a bunch of money. Usually your company will give you a day or two off to go do these events if you’re gonna pay for ’em yourself. That’s the way I used to do it. Not that you have to do it that way, but that’s the way I used to do it.
It’s important to keep up at the latest and greatest because your value to your company is what’s in your head. And the more good stuff you can get in your head and more answers you can help them with, the more likely, um, you’re gonna be promoted and, and grow within those organizations. Because right now, all the operators are looking for.
Smart people. They’re, they’re just looking for bodies. They used to be looking [00:27:00] for bodies two years ago. Now they’re looking for the, the brightest, the most connected, the, the most on top of what the industry is doing. That’s who they’re hiring. Yeah. I want to focus on that one
word you said there. Allen was the most connected.
Joel Saxum: Um, and this is coming from, uh, an, an ex engineer or still an engineer, I guess technically, but, uh, that has gone to the dark set of commercial things. So one, one time. A guy told me, um, your network is your network. Um, so focusing on that, I know like engineers for the most part, like, um, stereotypically it’s a psyche.
It’s this, I’m gonna solve this problem. I’m gonna do these things, I’m gonna do this. Now if you, if you sit back for a second and you fly over the top of the trenches and you look out, sometimes it’s nice to just know people that can solve problems for you or with you. So if you have this, like we get those calls like, oh man, I’m so glad I met you guys.
Help me, helping me to solve my lightning problem. Because that’s what we do at Weather Guard. We partner with people, we support, we work in, in cohesion to make sure we’re solving those issues. We’re not just selling [00:28:00] a product walking away. So we’re a good person to have in your network. Right. So I have in my network, or Allen, we both have the same people.
Like in the CMS world, we know. Man. Beer box, CMS blade, CMS, icing, CMS, acoustics, lightning. We know all kinds of people, so if someone has a CMS problem, we can help them out. So we’re able to help people solve problems. I think that that’s a very important thing. I know that, um, you know, these, the events at conferences, whether it is a opening reception, um, whether it is walking the exhibition floor.
Whatever it may be, meeting those people and making those connections also can help you, um, to learn more, to expand your horizons and, um, kind of, uh, be able to be of more value to your team, um, in the
Allen Hall: future. Absolutely. So Joel, this has been great to, to walk through what the conferences and symposiums I, I do wanna bring up one more that’s sort of near and dear to me [00:29:00] because leading edge erosion is one of the things that we have dealt with at Weather Guard when, ’cause a lot of operators talk to us about it.
There’s the sixth International Symposium on leading edge erosion and protection of wind turbine blades, and that’s in Ross, Gilda, Denmark. It’s, it’s sponsored by DTU. It’s fourth through 6th of February, so I’ve been to that one about two years ago. It’s not unpleasant weather, but it is a little chilly.
Uh, but anybody that’s anybody in leading edge erosion is there. Blade aerodynamics is there. Uh, it’s a worldwide event. People from all over come to that event and it’s, it’s hard to describe because there’s so much information coming at you so fast. It’s about, it’s really roughly two days of just leading edge.
This leading edge that here’s what we tried, this is what works. This is the testing we’re doing, this is the testing you should be doing. All that data [00:30:00] has no other place to reside, and DTU has put this conference together for a last couple of years. Wonderful conference. If you can get there. Do it. So even if you’re an operator in Texas, hey you, I know you have leading edge erosion.
Come on, let’s be honest. You have leading edge erosion and you probably reached out to different companies to see what they have to offer. All that information is sitting there at DTU in February. Everybody, all the, everybody that makes a product will be there. Everybody that has tried a product will be there.
So you can actually talk to someone who has used a leading edge protection material. You could talk to the people who offer leading Edge protection materials. You can talk about, uh, the testing that happens because at DTU, they have a rain erosion test facility, which we had on the podcast. Uh, that is the best one on the planet.
So you’re going to the right place. For leading edge protection. So you want to, just that one, you have to Google, and that’s the best way to find that one. DTU, uh, six [00:31:00] International Symposium on leading edge erosion. Put that into the Google machine, it’ll pop up. Uh, getting to there is relatively easy. You have to find a Copenhagen.
It’s just up the road. It’s it Ross Gill. It’s not that far from Copenhagen. Uh, it, it is very well done, so I have to speak highly of that one. I have presented there with, uh, Nicholas Godder with Power Curve about two years ago. Fabulous. Absolutely fabulous. So I’m trying to get to that one. If Joel will let me go this year, uh, to, ’cause I just, I think everybody’s there is really interested to talk to.
It’s a, it’s a very scientific community, but it’s worldwide. It’s, it’s, it’s unlike any other conference you’re gonna go to, in my opinion.
Joel Saxum: So, Allen, as we’re sitting here. You talked, you, you brought up the Leading Edge Symposium beginning of February. There’s another conference in the beginning of February every year that is much like this one.
So Leading Edge Symposium is very much focused on a problem leading edge erosion, what’s happening, what’s the science, what’s going on there. The other one, which is the, is the few days right before this, so you [00:32:00] could make a trip and hit both of them is winter wind, winter wind up in sva, so winter, and they do this one February 2nd and fourth in Northern Sweden.
So if you’re, it’s all about Arctic climate and, and to make sure that you’re thinking about Arctic climate, they put you in the middle of the Arctic climate in the beginning of February.
Allen Hall: Yeah. It’s mostly Scandinavians that are there. But, uh, where’s it gonna be held out this year? Joel? Is it in Aura? It’s in sva.
Sva, okay. All right. So I went there two years ago and it was in Aura. Beautiful ski chalet place. Amazing. Absolutely amazing. The sight lanes were incredible. Uh, and, but the technical content there, if you have any icing issue, if you’re in Canada, Northern us, anywhere in Northern Europe, uh, that is the place to go.
Because all icing questions can get answered there. All the technology people are there. All the protective coatings are there. All the de-icing companies [00:33:00] are there. All the sensor companies are there. It’s not the biggest conference in the world. Again, there’s probably a hundred, maybe 150 people that attend it, but it’s extremely well organized.
Very well organized, and it’s it, it’s maybe not the easiest place to get to. Traveling around Sweden, in my opinion, is not necessarily easy. However, once you’re there, you’re gonna learn so much. You’re gonna connect with both, all the, everybody that is doing research in icing or has a system that you’re interested in, you can talk to them about it and get the latest, uh, you know, how they’re using a system, how it works.
Do they like it? What do you like, what do you don’t like? That’s why you travel to Sweden for winter wind is to get that knowledge because anything in icing is expensive, in my opinion. To do anything about it is not cheap. So you, you want to have the right answer for your application and you’re gonna get it if you travel to Sweden.
Yeah, and that
Joel Saxum: one, um, they do a really cool job. Everybody I’ve talked to up [00:34:00] there is like, well, when it was an hour they, they’d go skiing, right? It was like, oh, we’ll go a day before the day after we go skiing. But I know last year they, they, the conference organizers organized a field trip to one of the largest wind farms in Sweden.
Um, and the, a ton of people from the conference went, so they had bus, bus loads of people that got to go out, see things in an extreme arctic environment to see how they operate up there in, in northern Sweden. And I think that that is a. That’s a really nice thing to be able to do. Kind of like if you’re in Copenhagen and you get the chance to go out to Stri and see the big test site like that is a, again, a wind mecca thing.
So very, very cool. Um, uh, thinking about doing that one myself here soon.
Allen Hall: Yeah. You wanna bring your mittens to winter wind. It’s cold. Yeah, be prepared. It’s so, yeah, if you’re from one of the southern US states or France or somewhere where the weather is decent. Spain, Italy, Greece. Oh, Greece is beautiful.
It takes a little, [00:35:00] uh, a might to get stuff on that airplane knowing when you get off that airplane, it’s going to be cold. But, uh, you know, a lot of operators have wind turbines all over the place. We, we’ve talked to operators in Southern Europe that have turbines up north, and you’re gonna have to take one for the team and go up there and, and participate in that.
That way you can just Google, uh, Joel, what’s the website for that? It is Winter wind.se. So Joel, I mean that, that’s a pretty good list for everybody. Uh, we just wanted to, to put it out there. Now’s the time to start looking at your travel schedules. Yes, yes, yes, I know. Travel budgets are being cut. However you need to invest in yourself and get out there and find out what’s going on in the wind world.
So this has been a, a great update. Joel. I appreciate uh, you organizing this. If you have any questions, obviously reach out to us. We’re both on LinkedIn and uh, next week Rosie and Phil will be back. And we will have a, a regular uptime episode. So thank you so much for joining us, and we’ll see you here next week [00:36:00] on the Uptime Wind Energy Podcast.
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Morten Handberg Breaks Down Leading Edge Erosion
Weather Guard Lightning Tech

Morten Handberg Breaks Down Leading Edge Erosion
Morten Handberg, Uptime’s blade whisperer, returns to the show to tackle leading edge erosion. He covers the fatigue physics behind rain erosion, why OEMs offer no warranty coverage for it, how operators should time repairs before costs multiply, and what LEP solutions are working in the field.
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Welcome to Uptime Spotlight, shining Light on Wind. Energy’s brightest innovators. This is the Progress Powering Tomorrow.
Allen Hall: Morten, welcome back to the program.
Morten Handberg: Thanks, Allen. It’s fantastic to be back on on, on the podcast. Really excited to, uh, record an episode on Erosion Today.
Allen Hall: Wow. Leading as erosion is such a huge worldwide issue and. Operators are having big problems with it right now. It does seem like there’s not a lot of information readily available to operators to understand the issue quite yet.
Morten Handberg: Well, it, I mean, it’s something that we’ve been looking at for the, at least the past 10 years. We started looking at it when I was in in DONG or as it back in 2014. But we also saw it very early on because we were in offshore environment, much harsher. Uh, rain erosion conditions, and you were also starting to change the way that the, the, uh, the coatings [00:01:00]that were applied.
So there was sort of a, there was several things at play that meant that we saw very early on, early on offshore.
Allen Hall: Well, let’s get to the basics of rain erosion and leading edge erosion. What is the physics behind it? What, what happens to the leading edges of these blades as rain? Impacts them.
Morten Handberg: Well, you should see it as um, millions of, of small fat, uh, small fatigue loads on the coating because each raindrop, it creates a small impact load on the blade.
It creates a rail wave that sort of creates a. Uh, share, share loads out on, uh, into the coating that is then absorbed by the coating, by the filler and and so on. And the more absorbent that your substrate is, the longer survivability you, you’re leading into coating will have, uh, if you have manufacturing defects in the coating, that will accelerate the erosion.
But it is a fatigue effect that is then accelerated or decelerate depending on, uh, local blade conditions.
Allen Hall: Yeah, what I’ve seen in the [00:02:00] field is the blades look great. Nothing. Nothing. You don’t see anything happening and then all of a sudden it’s like instantaneous, like a fatigue failure.
Morten Handberg: I mean, a lot of things is going on.
Uh, actually you start out by, uh, by having it’s, they call, it’s called mass loss and it’s actually where the erosion is starting to change the material characteristics of the coating. And that is just the first step. So you don’t see that. You can measure it in a, um, in the laboratory setting, you can actually see that there is a changing in, in the coating condition.
You just can’t see it yet. Then you start to get pitting, and that is these very, very, very small, almost microscopic chippings of the coating. They will then accelerate and then you start to actually see the first sign, which is like a slight, a braided surface. It’s like someone took a, a fine grain sandpaper across the surface of the plate, but you only see it on the leading edge.
If it’s erosion, it’s only on the center of the leading edge. That’s very important. If you see it on the sides and further down, then it’s, it’s [00:03:00] something else. Uh, it’s not pure erosion, but then you see this fine grain. Then as that progresses, you see more and more and more chipping, more and more degradation across the, the leading edge of the blade.
Worse in the tip of it, less so into the inner third of the blade, but it is a gradual process that you see over the leading edge. Finally, you’ll then start to see the, uh, the coating coming off and you’ll start to see exposed laminate. Um, and from there it can, it can accelerate or exposed filler or laminate.
From there, it can accelerate because. Neither of those are actually designed to handle any kind of erosion.
Allen Hall: What are the critical variables in relation to leading edge erosion? Which variables seem to matter most? Is it raindrop size? Is it tip speed? What factors should we be looking for?
Morten Handberg: Tip speeds and rain intensity.
Uh, obviously droplet size have an impact, but. But what is an operator you can actually see and monitor for is, well, you know, your tip speed of the blade that matters. Uh, but it is really the rain intensity. So if you have [00:04:00] sort of a, an average drizzle over the year, that’s a much better condition than if you have like, you know, showers in, in, in, in a, in a few hour sessions at certain points of time.
Because then, then it becomes an aggressive erosion. It’s not, it’s, you don’t, you get much higher up on the. On the, on the fatigue curve, uh, then if it’s just an average baseline load over long periods of time,
Allen Hall: yeah, that fatigue curve really does matter. And today we’re looking at what generally is called VN curves, velocity versus number of impacts, and.
The rain erosion facilities I’ve seen, I’ve been able to, to give some parameters to, uh, provide a baseline or a comparison between different kinds of coatings. Is is that the, the standard as everybody sees it today, the sort of the VN curve
Morten Handberg: that is what’s been developed by this scientific, uh, community, these VN curve, that that gives you some level of measure.
I would still say, you know, from what we can do in a rain erosion tester to what is then actually going on [00:05:00] the field is still very two very, very, very different things you can say. If you can survive a thousand hours in a rain erosion tester, then it’s the similar in the field that doesn’t really work like that.
But there are comparisons so you can do, you know, uh, a relationship study, uh, between them. And you can use the VN curves to determine the ERO erosion aggressiveness. Field. We did that in the bait defect forecasting that we did in wind pile up with DCU back in 2019, uh, where we actually looked at rain erosion across Europe.
Uh, and then the, uh, the actual erosion propagation that we saw within these different sites, both for offshore and for onshore, where we actually mapped out, um, across Europe, you know, which areas will be the most erosion prone. And then utilize that to, to then mo then, then to determine what would be the red, the best maintenance strategy and also, uh, erosion, uh, LEP, uh, solution for that wind farm.
Allen Hall: Oh, okay. Uh, is it raindrop size then, or just [00:06:00] quantity of raindrops? Obviously drizzle has smaller impact. There’s less mass there, but larger raindrops, more frequent rain.
Morten Handberg: If you have showers, it tends to be larger drops. Right. So, so they kind of follow each other. And if it’s more of a drizzle. It will be smaller raindrops.
They typically follow each other. You know, if you’ve been outside in a rainstorm before we just showered, you would have sense that these are, these are much higher, you know, raindrop sizes. So, so there is typically an a relation between raindrop size and then showers versus a drizzle. It’s typically more fine, fine grain rain drops.
Allen Hall: And what impact does dirt and debris mixed in with the rain, uh, affect leading edge erosion? I know a lot of, there’s a lot of concern. And farm fields and places where there’s a lot of plowing and turnover of the dirt that it, it, it does seem like there’s more leading edge erosion and I, I think there’s a little bit of an unknown about it, uh, just because they see leading edge [00:07:00]erosion close to these areas where there’s a lot of tilling going on.
Is it just dirt impact worth a blade or is it a combination of dirt plus rain and, and those two come combining together to make a worse case. Uh, damage scenario.
Morten Handberg: Technically it would be slightly worse than if it were, if there is some soil or, or sand, or sand contamination in the raindrops. But I mean, logically rain typically, you know, comes down from the sky.
It doesn’t, you know, it doesn’t mix in with the dirt then, you know, it would be more if you have dirt on the blades. It’s typically during a dry season where it would get mixed up and then blown onto the blades. Honestly, I don’t think that that is really what’s having an impact, because having contamination in the blade is not something that is, that would drive erosion.
I think that that is, I think that is, that is a misunderstanding. We do see sand, sand erosion in some part of the world where you have massive, uh, sand, uh, how do you say, sandstorms [00:08:00] coming through and, and that actually creates an, an abrasive wear on the plate. It looks different from rain erosion because it’s two different mechanisms.
Uh, where the sand is actually like a sandpaper just blowing across the surface, so you can see that. Whereas rain is more of this fatigue effect. So I think in the, theoretically if you had soil mixed in with rain, yes that could have an impact because you would have an a, a hardened particle. But I do, I don’t think it’s what’s driving erosion, to be honest.
Allen Hall: Okay, so then there’s really two different kinds of failure modes. A particle erosion, which is more of an abrasive erosion, which I would assume be a maybe a little wider, spread along the leading edge of the blade versus a fatigue impact from a raindrop collision. They just look different, right?
Morten Handberg: Yeah, so, so sand erosion you could have spreading across a larger surface of the blade because it, because it doesn’t bounce off in the same way that a raindrop would, you know, because that’s more of an impact angle and the load that it’s applying.
So if it comes in at a, at a st [00:09:00] at a, um, at the, at the, at a, at a steep angle, then it would just bounce off because the amount of load that it’s impacting on would be very limited. So that’s also why we don’t really see it on the, um, uh, outside of the leading edge. Whereas sand erosion would have a, would, would have a different effect because even at a steep angle, it would still, you know, create some kind of wear because of the hardened particle and the effect of that.
Allen Hall: Okay. So let’s talk about incubation period, because I’ve seen a lot of literature. Talking about incubation period and, and what that means. What does incubation period mean on a leading edge coating?
Morten Handberg: So that is, that, that is from when you start having the first impacts until you get the, the, the change in structure.
So when you get to the mass loss or first pitting, that would be your incubation period, because that is from when it starts until you can see the actual effects. Would say that, that that is what would be defined as the incubation period of leading into erosion.
Allen Hall: Okay. So you wanna then maximize the incubation period where the coating still looks mostly pristine [00:10:00] once incubation period is over and you get into the coating.
Are there different rates at which the coatings will deteriorate, or are they all pretty much deteriorating at roughly the same rate?
Morten Handberg: I mean, for the really high durability. We don’t really have good enough data to say anything about whether the, um, the, the period after the incubation period, whether that would actually, how that would work in the field.
We don’t really know that yet. I would say, because the, um, some of the, the shell solutions, some of the high end polyurethane coatings, if they fail, typically it’s because of workmanship. Or adhesion issues. It’s has so far not really been tied in directly in, into leading edge erosion. Uh, the ones that I’ve seen, so typically, and, and, you know, all of these high-end coatings, they’re just, they, they have shown, you know, some of them you couldn’t even wear down in a rain erosion tester.
Um, so, so we don’t really know. Um, how, [00:11:00] how the, how the shells, they would, they, they, they, they, how they would react over the five, 10 year period because we haven’t seen that much yet. And what we have seen have been more of a mechanical failure in, in the bonding
Allen Hall: that, I guess that makes sense. Then operators are still buying wind turbine blades without any leading edge coating at all.
It is basically a painted piece of fiberglass structure. Is that still advisable today or are there places where you could just get away with that? Or is that just not reality because of the tip speeds?
Morten Handberg: For the larger, I would say anything beyond two megawatt turbines, you should have leading edge protection because you’re at tip speeds where, you know, any kind of rain would create erosion within, um, within the lifetime of the late.
That is just a fact. Um, so. I don’t, I don’t see any real areas of the world where that would not apply. And if it, if you are in a place where it’s really dry, then it would typically also mean that then you would have sand erosion. Is that, that, [00:12:00] that would, I would expect that it would be one of the two.
You wouldn’t be in an area where it couldn’t get any kind of erosion to the blades. Um, so either you should have either a very tough gel code, um, coating, or you should have have an LEP per urethane based coating. On the blades,
Allen Hall: well do the manufacturers provide data on the leading edge offerings, on the coatings, or even the harder plastic shells or shields.
Does, is there any information? If I’m an operator and I’m buying a a three megawatt turbine that comes along with the blade that says, this is the li, this is the estimated lifetime, is that a thing right now? Or is it just We’re putting on a coating and we are hoping for the best?
Morten Handberg: The OEMs, as far as I, I haven’t seen any.
Any contract or agreement where today, where erosion is not considered a wear and tear issue, there is simply no, no coverage for it. So if you buy a turbine and there’s any kind of leading [00:13:00] edge erosion outside of the end of warranty period, it’s your your problem. There is no guarantee on that.
Allen Hall: So the operator is at risk,
Morten Handberg: well, they’re at risk and if they don’t take matters into their own hands and make decisions on their own.
But they would still be locked in because within the warranty period, they will still be tied to the OEM and the decisions that they make. And if they have a service agreement with the OEM, then they would also be tied in with what the OEM provides.
Allen Hall: So that does place a lot of the burden on the owner operator to understand the effects of rate erosion, particularly at the at a new site if they don’t have any history on it at all.
To then try to identify a, a coating or some sort of protecting device to prevent leading edge erosion. ’cause at the end of the day, it does sound like the operator owner is gonna be responsible for fixing it and keeping the blades, uh, in some aerodynamic shape. That that’s, that’s a big hurdle for a lot of operators.
Morten Handberg: The problem is that if you have a service [00:14:00]contract, but you are depending on the OEM, providing that service. Then you have to be really certain that any leading edge erosion or anywhere on the leading edge is then covered by that contract. Otherwise, you’re in, you’re in a really bad, you’re in a really risky situation because you can’t do anything on your own.
Because if you’re a service contract, but you’re beholden to whatever the, your service provider is, is, is agreeing to providing to you. So you might not get the best service.
Allen Hall: And what are the risks of this? Uh, obviously there can be some structural issues. Particularly around the tips of the blaze, but that’s also power loss.
What are typical power loss numbers?
Morten Handberg: Well, there is a theoretically theoretical power loss to it, but for any modern turbine, the blade, the, the turbine would simply regulate itself out of any leading erosion loss. So, so the blades would just change their behavior that the turbine would just change, its its operation [00:15:00]conditions so that it would achieve the same lift to the blade.
So. Uh, any study that we have done or been a part of, uh, even, you know, comparing blades that were repaired, blades that were cleaned, blades that were, uh, left eroded, and then operating the, uh, the deviation was within half, half percent and that was within the margin of error. We couldn’t read, we couldn’t see it even for really, you know, really er road blades.
Of course there is different between turbines. Some turbines, they, they could show it, but I haven’t seen any data that suggests that erosion actually leads to a lot of power loss. There is a theoretical loss because there is a loss in aerodynamic performance, but because blades today they’re pitch controlled, then you can, you can regulate yourself out of that.
Some of that, uh, power laws,
Allen Hall: so the control laws in the turbine. Would know what the wind speeds are and what their power output should be, and it’ll adjust the [00:16:00]pitch of each of the blades sort of independently to, to drive the power output.
Morten Handberg: Typically, erosion is a uniform issue, so what happens on one blade happens on three.
So it’s rare to see that one blade is just completely erod in the two other they look fine. That’s really rare unless you start, you know, doing uh, abnormal repairs on them. Then you might get something. But even then, I mean, we’re not talking, you know, 10 per 10 degrees in, in variation. You know, it’s not, it’s not anything like that.
It’s very small changes. And if they would do a lot of weird DA, you know, uh, different angles, you would get instant imbalance and then, you know, you would get scatter alarm. So, so you would see that quite fast.
Allen Hall: Well, let me, let me just understand this just a little bit. So what the control logs would do would increase the pitch angle of the blaze, be a little more aggressive.
On power production to bring the power production up. If leading edge erosion was knocking it down a percentage point or two, does that have a consequence? Are like when you [00:17:00] start pitching the blades at slightly different angles, does that increase the area where rain erosion will occur? Is like, are you just.
Keep chasing this dragon by doing that,
Morten Handberg: you could change the area a little bit, but it’s not, it’s not something that, that changes the erosion, uh, that the erosion zone, that that much. It’s very minimal. Um, and one, one of the, another, another reason why, why you might see it might, might not see it as much is because voltage generator panels is widely used in the industry today.
And, and Vortex panel, they are. Uh, negating some of the negative effect from, uh, leading erosion. So that also adds to the effect that there, that the aerodynamic effect of leading erosion is limited, uh, compared to what we’ve seen in the past.
Allen Hall: Okay. So there’s a couple manufacturers that do use vortex generators around the tip, around the leading edge erosion areas right outta the factory, and then there’s other OEMs that don’t do that at all.
Is, is there a benefit to [00:18:00] having the VGs. Right out of the factory. Is that, is that just to, uh, as you think about the power output of the generator over time, like, this is gonna gimme a longer time before I have to do anything. Is, is in terms of repair,
Morten Handberg: it does help you if you have contamination of the blade.
It does help you if you have surface defects off the blade. That, that any, uh, any change to the air, to the aerodynamics is, is reduced and that’s really important if you have an optimized blade. Then the negative effect of leading erosion might get, uh, you know, might, might, might get, might get affected.
But there are, there are still reasons why I do want to do leading erosion repairs. You should do that anyway, even if you can’t see it on your power curve or not, because if you wait too long, you’ll start to get structural damages to the blade. As we talked about last time. It’s not that leading edge erosion will turn into a critical damage right away, but if you need, if you go into structural erosion, then the, then the cost of damage.
The cost of repairing the damage will multiply. Uh, [00:19:00] and at, at a certain point, you know, you will get a re structure. It might not make the blade, you know, uh, cost a, a condition where the blade could collapse or you’re at risk, but you do get a weakened blade that is then susceptible to damage from other sources.
Like if you have a lighting strike damage or you have a heavy storm or something like that, then that can accelerate the damage, turning it into a critical damage. So you should still keep your leading edge in, in shape. If you want to do to, to minimize your cost, you should still repair it before it becomes structural.
Allen Hall: Okay. So the blades I have seen where they actually have holes in the leading edge, that’s a big problem just because of contamination and water ingress and yeah, lightning obviously be another one. So that should be repaired immediately. Is is that the, do we treat it like a cat four or cat five when that happens?
Or how, what? How are we thinking about that?
Morten Handberg: Maximum cat, cat four, even, even in those circumstances because it is a, it is a severe issue, but it’s not critical on, on its own. So I would not treat it as a cat five where you need to stop [00:20:00] the turbine, stuff like that. Of course, you do want, you don’t want to say, okay, let’s wait on, let’s wait for a year or so before we repair it.
You know, do plan, you know, with some urgency to get it fixed, but it’s not something where you need to, you know, stubble works and then get that done. You know, the blade can survive it for, for a period of time, but you’re just. Susceptible to other risks, I would say.
Allen Hall: Alright. So in in today’s world, there’s a lot of options, uh, to select from in terms of leading edge protection.
What are some of the leading candidates? What, what are some of the things that are actually working out in the field?
Morten Handberg: What we typically do, uh, when we’re looking at leading edge erosion, we’re looking at the, the raw data from the wind farm. Seeing how, how bad is it and how long have the wind farm been operated without being repaired?
So we get a sense of the aggressiveness of the erosion and. Um, if we have reliable weather data, we can also do some modeling to see, okay, what is the, what is the, the, uh, environmental conditions? Also, just to get a sense, is this [00:21:00] material driven fatigue or is it actually rain erosion driven fatigue?
Because if the, if the coating quality was not, was not very good, if the former lead leading edge, it was not applied very, very, very good, then, you know, you still get erosion really fast. You get surface defects that, uh, that trigger erosion. So that’s very important to, to, to have a look at. But then when we’ve established that, then we look at, okay, where do we have the, the, the, uh, the structural erosion zone?
So that means in what, in what part of the BA would you be at risk of getting structural damage? That’s the part where that you want to protect at all costs. And in that, I would look at either shell solution or high duty, um, put urethane coating something that has a a long durability. But then you also need to look at, depending on whether you want to go for coating or shell, you need to look at what is your environmental condition, what is your, you know, yeah.
Your environmental conditions, because you also wanna apply it without it falling off again. Uh, and if you have issues with [00:22:00] high humidity, high temperatures, uh, then a lot of the coatings will be really difficult to process or, you know, to, to. Uh, to handle in the field. And, you know, and if you don’t, if you don’t get that right, then you just might end up with a lot of peeling coating or uh, peeling shells.
Um, so it’s very important to understand what is your environmental conditions that you’re trying to do repairs in. And that’s also why we try not to recommend, uh, these shell repairs over the entire, out a third of the blade. Because you’re, you’re just putting up a lot of risk for, for, uh, for detaching blades if you put on too high, um, uh, how do you say, high height, sea of solutions.
Allen Hall: Yeah. So I, I guess it does matter how much of the blade you’re gonna cover. Is there a general rule of thumb? Like are we covering the outer 10%, outer 20%? What is the. What is that rule of thumb?
Morten Handberg: Typically, you know, you, you get a long way by somewhere between the outer four to six meters. Um, so that would [00:23:00]probably equivalate to the, out of the outer third.
That would likely be something between the outer 10 to 15 to 20% at max. Um, but, but it is, I, I mean, instead of looking at a percentage, I usually look at, okay, what can we see from the data? What does that tell us? And we can see that from the progression of the erosion. Because you can clearly see if you have turbines that’s been operating, what part of the blade has already, you know, exposed laminate.
And where do you only have a light abrasion where you only have a light abrasion, you can just continue with, and with the, with, with the general coating, you don’t need to go for any high tier solutions. And that’s also just to avoid applying, applying something that is difficult to process because it will just end up, that it falls off and then you’re worse off than, than before actually.
Allen Hall: Right. It’s about mitigating risk at some level. On a repair,
Morten Handberg: reducing repair cost. Um, so, so if you, if you look at your, your conditions of your blades and then select a solution that is, that is right for that part of [00:24:00] the blade
Allen Hall: is the best way to repair a blade up tower or down tower is what is the easiest, I guess what’s easier, I know I’ve heard conflicting reports about it.
A lot of people today, operators today are saying we can do it up tower. It’s, it’s pretty good that way. Then I hear other operators say, no, no, no, no, no. The quality is much better if the blade is down on the ground. What’s the recommendation there?
Morten Handberg: In general, it can be done up tower. Um, it is correct if you do a down tower, the quality is better, but that, that, that means you need to have a crane on standby to swap out blades.
Uh, and you should have a spare set of blades that you can swap with. Maybe that can work. Um. But I would say in general, the, your, your, your, your cheaper solution and your more, you know, you know, uh, would be to do up tower. And if, and again, if you do your, your, your homework right and, and selecting the right, uh, products for, for your [00:25:00] local environments, then you can do up tower then leading it, erosion.
Not something that you need to, you should not need to consider during a down tower. Unless you are offshore in an environment where you only have, uh, 10 repair days per year, then you might want to look at something else. But again, if we talk for offs for onshore, I would, I would always go for up, up tower.
I, I don’t, I don’t really see the need for, for, for taking the blades down.
Allen Hall: So what is the optimum point in a blaze life where a leading edge coating should be applied? Like, do you let it get to the point where you’re doing structural repairs or. When you start to see that first little bit of chipping, do you start taking care of it then there I, there’s gotta be a sweet spot somewhere in the middle there.
Where is that?
Morten Handberg: There is sweet spot. So the sweet spot is as soon as you have exposed laminate, because from exposed laminate, uh, the repair cost is exactly the same as if it was just, you know, uh, a light abrasion of the coating because the, the, the time to, to, um, prepare the [00:26:00] surface to apply the coating is exactly the same.
From, you know, from, from, from light surface damage to exposed laminate. That is the same, that is the same repair cost. But as soon as you have a structural damage to your blade, then you have to do a structural repair first, and then you’re, you’re multiplying the repair time and your repair cost. So that is the right point in time.
The way to, to determine when that is, is to do inspections, annual inspections, if you do 10% of your wind farm per year. Then you would know why, what, how the rest of your wind farm looks like because erosion is very uniform across the wind farm. Maybe there are some small deviations, but if you do a subset, uh, then, then you would have a good basic understanding about what erosion is.
You don’t need to do a full sweep of the, of the wind farm to know, okay, now is my right time to do repairs.
Allen Hall: Okay, so you’re gonna have a, a couple years notice then if you’re doing drone inspections. Hopefully you put, as you put your blades up, doing a drone inspection maybe on the ground so you [00:27:00] have a idea of what you have, and then year one, year two, year three, you’re tracking that progression across at least a sampling of the wind farm.
And then, then you can almost project out then like year five, I need to be doing something and I need to be putting it into my budget.
Morten Handberg: When you start to see the first minor areas of exposed laminate. Then the year after, typically then you would have a larger swat of, of laminated exposure, still not as structural.
So when you start to see that, then I would say, okay, next year for next year’s budget, we should really do repairs. It’s difficult when you just direct the wind farm, maybe have the first year of inspection. It’s difficult to get any, any kind of, you know, real sense of what is the, you know, what is the where of scale that we have.
You can be off by a factor of two or three if, you know, if, um, so I would, I would give it a few years and then, uh, then, then, then see how things progresses before starting to make, uh, plans for repairs. If you [00:28:00] don’t have any leading edge erosion protection installed from the start. I would say plan, at least for year, year five, you should expect that you need to go out, do and do a repair.
Again, I don’t have a crystal ball for every, you know, that’s good enough to predict for every wind farm in the world, but that would be a good starting point. Maybe it’s year three, maybe it’s year seven, depending on your local conditions. That is, but then at least you know that you need to do something.
Allen Hall: Well, there’s been a number of robotic, uh, applications of rain erosion coatings. Over the last two, three years. So now you see several different, uh, repair companies offering that. What does the robotic approach have to its advantage versus technicians on ropes?
Morten Handberg: Obviously robots, they don’t, they don’t, uh, get affected by how good the morning coffee was, what the latest conversation with the wife was, or how many hours of sleep it got.
There is something to, with the grown operator, uh, you know how good they are. But it’s more about how well, uh, [00:29:00] adjusted the, the controls of the, of the, the robot or the drone is in its application. So in principle, the drone should be a lot better, uh, because you can, it will do it the right, the same way every single time.
What it should at least. So in, so in principle, if you, you, you, when we get there, then the leading it then, then the robot should be, should outmatch any repair technician in, in the world. Because repair technician, they’re really good. They’re exceptionally good at what they do. The, the, the far majority of them, but they’re, they’re still people.
So they, you know, anyone, you know, maybe standing is not a hundred percent each time, maybe mixing of. Um, of materials and they’re much better at it than I am. So no question there. But again, that’s just real reality. So I would say that the, the, the draw, the robots, they should, uh, they should get to a point at some, at some point to that they will, they will be the preferable choice, especially for this kind of, this kind of repair.
Allen Hall: What should [00:30:00] operators be budgeting to apply a coating? Say they’re, you know, they got a new wind farm. It’s just getting started. They’re gonna be five years out before they’re gonna do something, but they, they probably need to start budgeting it now and, and have a scope on it. ’cause it’s gonna be a capital campaign probably.
How much per turbine should they be setting aside?
Morten Handberg: I would just, as a baseline, at least set aside 20,000 per per blade
Allen Hall: dollars or a Corona
Morten Handberg: dollars.
Allen Hall: Really. Okay.
Morten Handberg: Assuming that you actually need to do a repair campaign, I would say you’re probably ending up in that region again. I can be wrong with by a factor of, you know, uh, by several factors.
Uh, but, um, but I would say that as a starting point, we don’t know anything else. I would just say, okay, this should be the, the, the, the budget I would go for, maybe it’ll be only 10 because we have a lesser campaign. Maybe it will be twice because we have severe damages. So we need just to, to, to source a, um, a high end, uh, LEP solution.
Um, so, so [00:31:00] again, that would just be my starting point, Alan. It’s not something that I can say with accuracy that will go for every single plate, but it would be a good starting point.
Allen Hall: Well, you need to have a number and you need to be, get in the budget ahead of time. And so it, it’s a lot easier to do upfront than waiting till the last minute always.
Uh, and it is the future of leading edge erosion and protection products. Is it changing? Do you see, uh, the industry? Winning this battle against erosion.
Morten Handberg: I see it winning it because we do have the technology, we do have the solutions. So I would say it’s compared to when we started looking at it in 14, where, you know, we had a lot of erosion issues, it seems a lot more manageable.
Now, of course, if you’re a, if you’re a new owner, you just bought a wind farm and you’re seeing this for this first time, it might not be as manageable. But as an, as an industry, I would say we’re quite far. In understanding erosion, what, how it develops and what kind of solutions that that can actually, uh, withstand it.
We’re still not there in [00:32:00] terms of, uh, quality in, in repairs, but that’s, um, but, but, uh, I, I think technology wise, we are, we are in a really good, good place.
Allen Hall: All the work that has been done by DTU and RD test systems for creating a rain erosion test. Facility and there’s several of those, more than a dozen spread around the world at this point.
Those are really making a huge impact on how quickly the problem is being solved. Right? Because you’re just bringing together the, the, the brain power of the industry to work on this problem.
Morten Handberg: They have the annual erosion Symposium and that has been really a driving force and also really put DTU on the map in terms of, uh, leading edge erosion, understanding that, and they’re also trying to tie, tie it in with lightning, uh, because, uh.
If you have a ro, if you have erosion, that changes your aerodynamics. That in fact changes how your LPS system works. So, so there is also some, some risks in that, uh, that is worth considering when, when, when discussing [00:33:00]repairs. But I think these of you, they’ve done a tremendous amount of work and r and d system have done a lot of good work in terms of standardizing the way that we do rain erosion testing, whether or not we can then say with a hundred uncertainty that this, uh, this test will then match with.
With, um, how say local environment conditions, that’s fine, but we can at least test a DP systems on, on the same scale and then use that to, to, to look at, well how, how good would they then ferry in in the, um, out out in the real world.
Allen Hall: Yeah, there’s a lot too leading edge erosion and there’s more to come and everybody needs to be paying attention to it.
’cause it, it is gonna be a cost during the lifetime of your wind turbines and you just need to be prepared for it. Mor how do people get ahold of you to learn more about leading edge erosion and, and some of the approaches to, to control it?
Morten Handberg: Well, you can always re reach me, uh, on my email, meh, at wind power.com or on my LinkedIn, uh, page and I would strongly advise, you know, reach out if you have any concerns regarding erosion or you need support with, um, [00:34:00] uh, with blade maintenance strategies, uh, we can definitely help you out with that.
Or any blade related topic that you might be concerned about for your old local wind farm.
Allen Hall: Yes. If you have any blade questions or leading edge erosion questions, reach out to Morton. He’s easy to get ahold of. Thank you so much for being back on the podcast. We love having you. It
Morten Handberg: was fantastic being here.
Cheers. A.
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