Weather Guard Lightning Tech

3S Lift Elevates Wind Technician Safety and Efficiency
Gio Scialdone, President of 3S Lift Americas, discusses the significant strides the company has made in deploying Climb Auto Systems across North America’s wind turbines. 3S Lift has installed over 18,000 Climb Auto Systems and expects to reach nearly 30,000 by the end of 2025, showing market need for making turbine climbs safer and less strenuous.
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Allen Hall: When technicians across North America are experiencing a dramatic and enjoyable shift in their daily work routine. This week we speak with Gio Scialdone president of three s, lift America. Under Geo’s Leadership 3S Lift has deployed over 18,000 Climb model systems with another 7,000 on order making the daily commute safer and more efficient for technicians at nearly one third of all wind turbines in North America.
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Allen Hall: Gio, welcome to the podcast.
Gio Scialdone: Thanks, Allen. Joel, thanks for having me.
Allen Hall: So our last touch point with you was about in 2023 and a lot has changed since then. When we first talked, I think there were about five, 6,000 climb auto systems being used in the United States, and was there like 70 odd thousand turbines in the us?
Those numbers have really dramatically changed. You wanna give everybody an update on how many cl model systems you have deployed in the us?
Gio Scialdone: Yeah. It’s a fun story and really one that’s close to me. As I’ve been here seven years and after my first year 2018, we had 50 units installed.
So we’re talking the climb auto system, we’re talking the ladder lift, retrofittable single technician ladder from the base of the tower to the A deck. Last year we completed 7,000 plus alone in 2024, and we’ve now got a total installed base of over 18,000, a backlog of about 7,000. So if we don’t sell any more lifts this year which I hope we will, we by the end of 2025, we.
We ought to be pretty close to 30,000 installed in the US and Canada. So that’s North America alone. We’re really proud of the team and the efforts that, the, our technicians are out there working every day. I think, Justin Patterson’s, our operations director, he’s got 38 teams of two techs 75, 80 technicians.
Every day installing lifts on the order of 130 to 150 per week as a company. So we’re a little diff we’re a little bigger than we were Yeah. The last time we talked. But it’s exciting.
Allen Hall: The climb model system is a great system, and as Joel and I move around the United States and we stop at wind farms, we talk to technicians about it and the site supervisors, and they love it.
They absolutely love that system. They love when it has been installed. They like using it. It just changes the whole attitude about being a technician and getting up tower, which is a remarkable thing. You have dramatically changed the way we think about climbing wind turbines today in the United States, and that’s that adoption rate.
A couple years ago it wasn’t very good. I want, I, when we talked to site supervisors, they would push back like, yeah, my guys can climb. They’re still okay to climb. What changed?
Gio Scialdone: Yeah. First I don’t wanna say I changed it, right? The product is speaking for itself. The product value is supreme.
I think, you mentioned attitude. The technician’s attitudes are changing. We had a customer who placed some orders in the fourth quarter after visiting some sites with and without our lifts. So a few of their sites they may have picked and choose okay, we’re going to retrofit this site for whatever reason.
Maybe it’s a poor performer and they want to improve, or maybe it’s a good performer, but they’re struggling to get technicians to work there. There’s a few different reasons I think ultimately. A product like this is starting to hit a tipping point. So I think we’re, we’re starting to feel some momentum.
What changed? I think, some word of mouth and the value stories started to become real. Like it’s really hard to measure availability in a three month fade, a three month period. We’re trying to show that. And we’re seeing data, so data helps, right? Some longer runway, we’ve got seven years of installations.
We have, a really good quality record. So that, that’s really helpful. And we’ve been adopted by the biggest customers out there. I think that’s of note, right? You can’t, I think of the top 20 owners, we have installations in 19 of the top 20. Owner operator. So that includes utilities, ipp, and if you wanna buy a wind turbine today in the North America, you’re gonna buy from four or five OEMs.
All of those OEMs can supply our lip. Were approved with all of them. So that’s a change too, right? I think four or five years ago we were outselling this and trying to get it in directly. And now the OEMs have it as a shelf option. So that’s a big change too.
Joel Saxum: I think what, to put it in perspective here, like we talked about adoption rate.
If you add Canada and the us so we’re saying North American turbines out there, Canada’s got 7,000 to 8,000 turbines. We’ve got 74 and change or whatever that number is. So figure 80, 85,000. You guys are gonna be, hopefully by the end of this year in 25,000 of ’em, and now 80 of 85. Some of those are, legacy turbines that are small kilowatt ones with lattice towers and these kind of things.
So that number shrinks to the availability of the market this way. But we’re talking one out of three turbines that you guys are in right now in the United States, and hopefully in the next. Year, 18 months, one out of two. That’s amazing for the technicians. And I wanted to touch on another point here is Allen and I follow the news globally about wind.
Of course. That’s one of the things we do regularly, right? So we’re w always watching about safety. And we see safety. There’s safety that what’s happening here, an incident there. Not only are you. Having your technicians that can get to work quicker, they can get to work without being worn out.
But all of that plays into a safety role as well. Can you tell us how that system helps on the safety record of these farms? There’s
Gio Scialdone: a huge
Joel Saxum: benefit
Gio Scialdone: to not climate. Allen, you’re in Western Massachusetts. There’s a few wind farms out there. The HUAC Wind Farm was one of the first projects I worked on, and they don’t have lifts yet.
But they’re looking at them and it’s only a 65 meter tower, but it’s freezing cold in the winter. And it creates a dangerous situation when you’re climbing with a bunch of gear and you get sweaty when you get to the A deck. And then you have potential hypothermic situations. The longevity of the repetitive motion.
We’ve talked and studied with a few different ergonomic experts. They’ve, given us some really good data on the challenges with repetitive movements or repetitive motion. If we sit in a computer all day long and type and type, you get carpal tunnel or whatever, so I think it’s really similar for wind turbine technicians.
These, these folks are climbing literally every day. This is their job at least once a day. So eliminating that is ultimately gonna. Improve their physical wellbeing. Some may say it’s a good workout. It can be, you can work out in other ways. It’s a very strenuous activity.
Strenuous workouts are risky. If you’re a bodybuilder, you’re working out strenuously. It’s challenging. And then think about from a safety perspective, a lot of people don’t connect this sometimes, but if I don’t have to climb. I am not ex, spending that energy physically climbing, then my brain is probably gonna be more focused on the electrical troubleshooting inside the hub that I have to figure out why this pitch bearing is not doing what it’s supposed to be doing.
That’s your real job. That’s, this is a hard job. That’s what you’ve been training for years, right? Is not to, climb for 15 minutes. I think a lot of our customers are seeing that that benefit full, come full circle. You mentioned the scale. We, we think that there’s probably 60,000 ish turbines in Norther and us, maybe another, yeah, probably five or so in Canada that are over 80 meters of one and a half megawatts or so.
We still have a long way to go. I don’t know. I try to make analogies at times for our product. ’cause I think it’s fun to think about when did airbags become just standard? All of a sudden they you can’t buy a car without ’em. And I’m starting to think maybe, I hope, I think a lot of owner operators are thinking, geez, we’re running a wind farm.
This is our job, this is our business. This is what we do. We have. Eight gigawatts in our fleet, or even the guys who have two. But that’s your job. That’s primarily your job is to operate these power plants as effectively and safely as you can. We think our product can, should be considered as a need, not a nice add.
And
Joel Saxum: We’re not there yet. We’ve got a lot more work to do. Gianna touch on that troubleshooting idea because we’ve talked to again, we’re out in the field all the time speaking with technicians. Sometimes you have this concept and the, and technicians listening will. We’ll know this, that end of the day climb, right?
So the conversation we have regularly is about, our daily jobs about lightning protection stuff. It’s about uptime of the turbines. We want these things producing, whether that’s for the PPA or contractually or whatever. That’s how energy producers make money, keep these things spinning. And there’s this concept sometimes that, hey, it’s three 30.
Or four o’clock, almost the end of the day if we climb, we’re up there until, and we’re not getting back down till seven. Let’s leave this one for the morning. That happens regularly in the wind world, right? It’s that end of the day climb thing. Now, if you don’t have to do an end of the day climb and you get to just hop onto a, basically an elevator, take it to the top, do your work, come back down, that changes the ROI of your kit.
Because now you’re not just saving the technicians operating more safely, but you’re putting more revenue in the pocket of the actual operator at that wind farm. That just makes sense to me.
Gio Scialdone: That’s, a lot of the driving factors are that exact notion. It’s more frequent climbs, right?
It’s increasing the number of acents. There’s a lot of companies out there that look at availability in different ways. Loss production factor. Time-based availability, energy based availability. A lot of them track number of ascents and they see a direct correlation from the number of ascents to the production of the windfall.
So the more you’re in a, in a way you’re like the more I’m fixing it, the better it’s running. Yeah. Yeah. We had a customer we got a quote from a customer who sent us an email on the fourth quarter who said, we, he just visited he is a CEO, or COOI should say. He said he just visited a few wind farms and the technicians love it.
And he said one thing, he goes about your 3:00 PM he said, nobody fights anymore about the 3:00 PM climb. Like they don’t in, in a way, they might even be raising their hand because that could be overtime where they used to say, and I’ve been on those sites. I worked in the field for two years. Ah, geez, I just want to, I just wanna go home.
I don’t want to climb up. And especially if you’re climbing up with an unknown factor up tower, right? If you’re going, ah, there’s a, I got this fault reading. I can’t do a stop, reset down tower ’cause that’s what you’re gonna try to do, right? It’s the smart thing to do, to try to see if you can fix it without climbing or without even using the climb auto without ascending.
Then they get up tower and imagine how frustrated it could be if you had to climb and then you forgot something at three 30. Oh, I forgot this tool ’cause I didn’t know what I was gonna go up here and do. That’s all the time, right? That is all the time. You’re, that is the nature of troubleshooting.
You can’t, you’re not gonna bring up every tool in your bag each time you ascend. But if you’re with the climb auto system and you forgot something, you can send it down remotely. And then your partner can put the tools on the climb auto system in the box and send it back up. And that takes 10 minutes round trip.
Instead of you climbing up, climbing down or sending the the internal chain hoist up and down, which is slower, or for other models you have, if you need a bigger tool, you gotta, send a winch out the backside of the cell, so I think there’s a lot of what we’ve learned too, is how our customers are changing the way they operate.
In a, in some ways, I’m not sure if they’re changing, like the big things, like how they do annual inspections, annual maintenances, but I think they’re changing some of the troubleshooting piece and that’s helping them, certainly helping their data, as you
Allen Hall: said. And now the climb model system, because it’s so widely deployed, there are accessories to it.
One being a box you can attach to the side of it to move gear up and down tools, equipment, whatnot. That makes a lot of sense. And I don’t always see that. And every time I walk into a turbine and I don’t see the, all the accessories, I think you guys haven’t really learned a lesson here. This tool has more capability than, want to walk people through.
What add-ons there are to the climb model system right
Gio Scialdone: now? We’ve improved the product over the years too. We’ve improved its functionality, its safety. The system itself has a fall Arrester, I. Inside of the car. Certainly it operates in manual mode and you can get up and down yourself.
We talked about that remote functionality is really important. Sending it down to the next technician, sending it down or up with tools that the remote mode can handle about 140 pounds of tools and equipment. That’s a setting, that’s a safety setting. There’s weight sensors in the foot pedals that measure that.
But that’s in general you’re not gonna send up a ya drive but you can send up a good amount of tools. You can send up a torque wretch, you can send up lunch, right? And so it’s just it’s important. Like these things are like enabling. And I hate to.
I keep going back to the soft side of it, but they’re really enabling technicians to just feel better and feel happier. Like we had a, I was at a site like in the fourth quarter and one of the guys was like, he was really excited that we were gonna install them soon. And I think he his exact quote was, this is gonna be a life changer for us.
He, it, it really is. And I was trying to think like how that could be, okay. Every day you commute by climbing. A 300 foot ladder, that’s your commute. And now you can take a ride. And I wonder if that’s like going from, riding your bike five miles in the rain uphill to now, being able to afford a car and you’re you’re becoming more efficient with your.
Joel Saxum: Job with your life and that just feels better. Gio, I’m going back to lunch. This is what I’m thinking. My entire career as a wind technician climbing that tower 15 minutes up, I’ve never had a hot lunch in the Neel and now the boys are swinging over from the o and m meeting, putting hot pizza hot pizza in the carrier, sending it back up to me, and I got warm pizza in then to sell.
And it’s the first time ever. That’s enough for me to put one of them in. That’s an awesome idea. Yeah.
Allen Hall: One of the key pieces over the last couple of years Geo that we’ve seen, ’cause we’ve been up close to it, is the training aspect of three s and you’re integrated into the training programs of a number of training sites.
TSL outside Dallas is one that I remember specifically. The banner’s there, the equipment’s there. So your training technician, as you get. Into the industry. They’re used to that because they’ve seen it as part of their onboarding and their training. You wanna walk through the sort of the thought processes of that and how you’ve integrated yourself into those training programs.
Gio Scialdone: I’m glad you brought that up because right now, this is the most important responsibility that I feel I have. And we have is now. Now it’s no longer, oh, let’s hope we get, a few hundred of these in the field. This is the way that a lot of technicians get to work, and we need to now ensure that they stay safe using our product, which means training, education, the right products, the right accessories, the right inspections, pre-use, annual inspections are important.
We have our system at a few different training centers. T-S-L-S-T-L, nsa Airstreams up Tower. Some of the contractors, pierce, all the OEMs, they we’ve wanted to put the product there so that there’s just more exposure to how just, it’s a very simple system, but we wanna ensure that techs are using it frequently.
We ourselves three s in Richardson, Texas, outside of Dallas, we’ve got our 40,000 square foot warehouse office with a portion of that, which is a GWO certified training facility. We’re not necessarily training our customers there, but we’re training our technicians and our, and we’re doing a lot of our own testing and research on the product to ensure it gets better and better.
Just last year, which is really important we, it’s, how many technicians are there? 12,000, some probably. So not only do the 10 technicians at the site use the lift. But the 40 technicians every year who come in from the ISPs also use it. How are we ensuring that they’re trained? The owner operator is, should do that, and a lot of them are, but we’ve all been there.
It can be how can we assure that training is as it should be? So we’ve rolled out this online portal. Um, it’s nearly free. Really for users to get trained online. It’s a two hour course. It’s comprehensive. Sounds like a long course for a system that you stand on, put your fall arrester in hold, two handles and go up.
But there’s a lot to it. There’s a lot of technicians that are smart. They, we’ve been there. We find ways to make things faster. And we want to ensure that everyone using the system does it right. And so this portal is really important. We rolled it out to our customers, to the operators to go get training.
And not only can you go train at, TSL and all the other spots, but we really believe that the online portal is a requirement. We want to ensure that nobody ever gets hurt on our product, and now one in three tech, if they’re, if we’re in one in three turbines, then one in three technicians are using it or more.
For the traveling tech. So maybe one and two. So let’s get the education going. I appreciate you bringing that up ’cause it’s, for us, it’s really important.
Allen Hall: And recently you made an agreement with dispatch, the online app, which shows where all the wind turbines are. I. Now with your agreement, you can see which turbines have the 3S Lift system integrated into them.
So now you know which turbines to climb. But it also has a certification piece in it too, right? So that you can, you make sure that you have taken that training before you, you get on site and realize, oh, there’s a 3S Lift here. I need to take that two hour training piece.
Gio Scialdone: The dispatch app is amazing.
It’s I’m. So happy to partner with those guys. They’ve done a great job. Imagine being a technician, being able to use that. We use it all the time we travel. You guys do too. I know when when you’re driving around, you’re going, is that a Siemens turbine? Oh no, that’s G okay, whose site is that?
And it really does help. And then think, from the safety perspective and emergency perspective, they’ve got a great product. So we’re happy to be integrated in some way. Yeah, I think yeah, you mentioned the certification connection point. That’s a phenomenal thing.
We, we’d love to take that a step further and have, our customers use it and a lot of ’em are I think it’s great for our sales team too, and they travel. They pull that up and see which sites are which and where our systems are installed and where they might not be.
Yeah, it’s a really cool product that it also shows if I was a technician, probably and I was, or I was a, a technician that’s, applying for a job and there’s a cluster of wind farms in the, Minnesota area, which there are a lot of wind farms there, and which one might you wanna apply to.
There’s still a lot of openings. This six, this is a job that’s in, still in, in very high demand. I haven’t checked the latest Indeed or LinkedIn Open, but there’s hundreds and hundreds of openings for wind turbine technicians. Still a growing job. And I think one of our customers for sure has said directly their fill rate is and their acceleration to when they place it, when they post a job and then close it, it’s much faster.
Since they’ve installed the Climb Auto system, people know, and I think they’re using the dis dispatch app. First, and I think they’re also asking the question, do you have a lift or not? When they get, when they interview. So what a
Allen Hall: benefit to a tech. Yeah. You think about all the money that HR departments spend to try to recruit technicians, tens of thousands of dollars per year.
I, and some of the things I’ve seen is, are insane. It could be just as simple as making their lives a little bit easier with the 3S Lift. That seems like a smart move. So what does 2025 hold for 3S Lift here geo? What should we
Gio Scialdone: expect? I think we’re gonna, we’re doing quarterly safety bulletins, so I think we’re trying to get more active with the market to push information.
We are really excited to, to have the opportunity to talk to you guys and. And share our stories, and I appreciate, your insights and expertise. Um, 2025, we’ve got 80 technicians working for three s and then we’ve got a few partnered subcontractors. So in some ways, we’re expecting to install eight to 10,000 more lifts this year.
The majority of those will be in retrofit scenarios. We do have a really good market share on the new construction side as well. So we’re still very active on, on, on the new construction sites. We’ve, we’re proud to say that we’ve got our lift at the Sun Zia site, which is the biggest wind farm in America.
So that’s an awesome thing. This is, have you been to Sunzi? Have you been out there?
Joel Saxum: Not yet.
Gio Scialdone: It’s amazing. What pattern has done to, to, build this PA pattern? Blattner, ge, vestus all of the above. They are, it is so remote. It is a huge infrastructure project that is very remote and the advent of lifts there.
We’re really proud to partner with those companies to, to have our lifts there. So we’re busy there. And that’s a project that’s a year and a half, two years to build. Wow. Yeah, we’re excited. We, this year is focused on safe execution safe execution and information to our customers. And continue, we’re gonna be building out in Canada a lot more.
Last year was a, an entry into the market. We’re in five provinces now in Canada. We’re, we’re really seeing the adoption rate improve there. They’re focused on safety, just like the companies in the us, a lot of them are the same companies. So yeah we’ve got a great team up there and a great sales manager up there who’s, um, kinda help us build out that, that space as well.
Allen Hall: So Geo, the Climb auto system is becoming deployed almost universally across the United States and now into Canada. If you don’t have it installed, where do you go? Where do you start?
Gio Scialdone: From a site manager perspective, if you’re a site leader or a site tech or a, a regional manager and you don’t have our contact we’re, you can go on three s lyft.com and click the info button, and that email goes to me, by the way, so that info@threesamericas.com is my second inbox.
For those texts that wanna have a, have a question or want to get a quote. We’re happy to e even if you have two turbines, Allen, we’re installing sometimes one we’re not opposed to that. We, we see value. If you see value, we see value. It doesn’t have to be a whole site even.
So some sites we’re installing a third at a time, right? Because the, that’s what the customer has for budget. That’s okay. It’s not an all or nothing. Thing we’ve got this in some universities and some of the wind schools and some of the wind towers out there that, that have really taken shape over the last decade.
So yeah, three s lyft.com, three s Americas you can reach us.
Allen Hall: Yes. If you don’t have a 3S Lift installed in your site you need to go to 3S Lift.com. Get ahold of Geo and start that process now, because they have so many deployments in the United States, you need to get in line.
There’s a lot of activity in 2025. You need to get your orders in now to get that done and stop climbing towers, right? The, we’re beyond that now. Geo, thank you so much for being on the podcast. We love having you on. Thank you guys. It was awesome. Appreciate it.
https://weatherguardwind.com/3s-lift-wind-technician-safety-efficiency/
Renewable Energy
The Trump Delusion
As shown here, there are (formerly credible) people who are telling us that Trump is restoring Americans’ trust in government.
Do they truly believe this?
Renewable Energy
When Truth No Longer Matters
One of the casualties of the post-truth era is that the statements of our “leaders” no longer are required to have any basis in fact. What Jim Jordan says here is a fine example.
When he says “better” here, is he referring to runaway inflation? Trump’s purposeless and illegal war with no end in sight? His blatant corruption and criminality? His having, quite successfully, divided the American people into groups that hate each other? The enrichment of billionaires at the expense of the working class? The carefully engineered collapse of the environment so as to favor his donors in fossil fuels? The demise of the U.S. educational system?
Please be clear.
Renewable Energy
CNC Onsite Cuts Repair Costs With Uptower Machining
Weather Guard Lightning Tech

CNC Onsite Cuts Repair Costs With Uptower Machining
Søren Kellenberger, CEO of CNC Onsite, joins to discuss uptower yaw gear repairs, flat tower flanges, and replacing 1,000 blade root bushings across 26 turbines.
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!
Allen Hall 2025: Soren, welcome back to the podcast.
Søren Kellenberger: Thank you, Allen, and, uh, nice doing it, uh, face-to-face- Yes, it’s great … and not as a team, uh, call. Right. That’s
Allen Hall 2025: true. Yeah. You’ve been doing a good bit of traveling, and you’re the new head of CNC Onsite.
Søren Kellenberger: I am, yes.
Allen Hall 2025: So congratulations on that.
Søren Kellenberger: Thank you very much.
Allen Hall 2025: And all the exciting new things that CNC Onsite [00:01:00] is doing, plus all the things you have developed and are now out in the field implementing, the, the list goes on and on and on.
I’m alwa- every time I talk to you, “Oh, we got a new-” Yeah … “machine to do something uptower.” So it’s all uptower, which is the, the beauty of CNC Onsite. You’re thinking about the operator and the cost to pull the blades off and do lifting the cell off and all those things. If we can do it uptower, we can save 30, 40, 50% of the cost of a repair.
Søren Kellenberger: Yeah.
Allen Hall 2025: That’s where CNC Onsite is just really killing it. You guys are doing great. Thank
Søren Kellenberger: you. Of course, we like what we do, but, uh, thank you.
Allen Hall 2025: Yeah. Yeah. Yeah, yeah. No, it’s good, it’s good. And, and so w- let’s talk about the things that I know about, and we’ll start there, and then we’ll go to all the new things you’re doing.
So the one that I see a lot of operators asking about is yaw tooth. Yeah.
Søren Kellenberger: Uh,
Allen Hall 2025: deformations, broken teeth on the yaw gear. That’s a big problem. And when I talk to [00:02:00] technicians, and I have them texting me about this, like, “Oh, well, I just weld on the gear back on, weld the tooth back on.” That’s a short-term solution.
That’s not gonna be long-term. The long-term solution is the CNC Onsite. Can you explain what you do to permanently fix these yaw gear problems?
Søren Kellenberger: Yeah. So what we do is actually we start by getting information about the, uh, original yaw ring, so the dimension of the teeth, and we get some load data. And, uh, then we start designing a replacement segment.
Uh, so what we ac- the process is actually that we bring a CNC controlled machine uptower, mount it on the yaw ring, and then we mill away that worn area, uh, creating a small pocket. And then those, uh, segments that we have designed, they are prefabricated. We bring them up and mount them in, in that, uh, pocket and bring the- The yaw ring back to where it’s, you can say, original design, uh, [00:03:00] that way.
Yeah
Allen Hall 2025: It’s better than the original design, ’cause you’re actually putting in better teeth than the, the manufacturer did originally.
Søren Kellenberger: True. Yeah, yeah.
Allen Hall 2025: So that happens, so you’re, you’re machining out those old teeth, broken teeth, putting the new set of teeth in th- and that all bolts in, and that’s it. That’s it.
But the, the difficulty is getting the machinery uptower to do that. That’s where a lot of your, your technology comes from, is getting this very accurate, uh, well-defined machine uptower and doing very controlled grinding and milling. Yes. So can you explain what that system looks like? If I’m gonna grind off those yaw, broken yaw teeth, how big is that kit?
Søren Kellenberger: It… Obviously, it depends a little bit on the turbine size. Sure, okay. Yeah. So, uh, it, so the, the newer five, six, uh, 10 megawatt turbines have larger teeth, so yeah, there you need a, a larger machine.
Allen Hall 2025: Okay.
Søren Kellenberger: But let’s say for, uh, Vestas three megawatt, the, the [00:04:00] complete machine weighs about 250 kilos. That’s it? So yeah.
So it, it comes up in smaller components. We just use, uh, the, the internal crane in, in the nacelle, and, uh, then we can lift the components to the yaw ring, assemble the machine, and then we are basically good to go. So it take, takes less than a day to get everything up and, uh, get set and be ready to, to machine.
Allen Hall 2025: So if you wanna fix a yaw gear problem, how long does it take from start to finish to get that done?
Søren Kellenberger: It typically, it takes one day to get everything up and get ready, and then per six teeth, which is a typical segment, it takes about a day to machine that. Okay. So, uh, let’s say you have, uh, somewhere between 10 and 15 teeth, it’s, uh, two to three segments.
So we do that in a week. Um-
Allen Hall 2025: Wow … and- ‘Cause the alternative is call a crane, have them lifting the cell off.
Søren Kellenberger: Yeah.
Allen Hall 2025: Take the yaw gear off, put a yaw gear on, if you can find a yaw gear. Yes. Put the nacelle back on. [00:05:00] Well, and I guess obviously the rotors are coming down too, so- Yeah. You’re talking about- Yes
hundreds of thousands of dollars in downtime. Yeah. It’s a big ordeal. The CNC Onsite method is so much easier.
Søren Kellenberger: We will just put our equipment in the back of our truck- … and then, uh, we’ll, we are ready to mobilize in a few days. So yeah, we can significantly, uh, bring down the downtime and, and as you said, the crane cost is of course extremely high.
And then you can add all the project management. You know, con- do I actually have my access roads, uh, still available? Right. Is the crane pad intact? And all of that stuff you need to organize. You can just forget about that and, uh- And
Allen Hall 2025: get it done …
Søren Kellenberger: get it done. Yeah.
Allen Hall 2025: Yeah. There’s, there’s a lot of owners, we, everybody knows who the machines are that have the, the, the yaw tooth problem.
Søren Kellenberger: Yeah.
Allen Hall 2025: So if you’re one of those owner operators, you better get ahold of CNC Onsite. Now, flanges on tower sections. It’s become a, a really critical issue. You hear a lot of, of [00:06:00] operators, OEMs talking about, “I’m putting together these tower sections and those flanges don’t really meet up quite right.”
Søren Kellenberger: Yep.
Allen Hall 2025: “I’m creating uneven torque patterns, bolt pat- my bolt tightening is not quite right.”
Søren Kellenberger: Yeah.
Allen Hall 2025: And it never really seats right, so you have this mechanical, built-in mechanical problem. CNC Onsite is now fixing that so those flanges are actually really flat. Really flat, yes. ‘Cause that’s what you need.
Søren Kellenberger: Yeah.
Allen Hall 2025: Yeah. They’re highly loaded.
Søren Kellenberger: If, if you want, uh… If you want your joints to be, uh, basically maintenance free, uh, we can, uh, achieve that with machining the flanges. And then, of course, you need to be in control with your bolt tightening process. Sure. But if you do those two things, you can have maintenance free bolted connections, and there’s so much money to be saved in the operations.
Um, and of course, when you have these bolts that end up fatiguing, some of them don’t get caught in time and you end up ha- having a catastrophic failure on the turbine. Uh- We’ve [00:07:00] seen that … because you have that zipper effect. Once a bolt starts breaking, the neighboring ones take that extra load and it accelerates really quickly.
Uh, yeah. Sure does.
Allen Hall 2025: Yeah. It’s a very serious situation, but it starts with this very simple solution which is just make the flange flat.
Søren Kellenberger: Yeah. But I think it’s some… a part of the issue is that those buying the towers aren’t necessarily responsible for the operational cost of maintaining that bolted connection.
So they might save a little bit of money when they buy the tower sections with rougher tolerances, but you will spend the money 10 times in the operations. Uh, and, and that’s, I think that’s where some of the operations, uh, re- the, the, those responsible for operational costs should, uh, get a little bit more CapEx spend, uh- Oh, sure.
Yeah. And, and then, uh, actually save a lot of money and, and reduce risk. Uh, it’s a huge, huge risk
Allen Hall 2025: It’s, it’s one of those lessons learned. You [00:08:00] don’t know that they should be flat. You shouldn’t know… You don’t know your flanges should be flat until you experience the problems, and then you want all your flanges flat from here on out.
Søren Kellenberger: Yeah.
Allen Hall 2025: But there’s only one way to do that really, and that’s to call CNC Onsite to come in and to make them flat.
Søren Kellenberger: Yeah.
Allen Hall 2025: Because it’s a difficult thing to do. You really need to have the machining prowess and the tight tolerances that CNC Onsite’s gonna deliver in a tool that can actually be adapted to that tower ring and make those surfaces flat.
It’s complicated. Exactly.
Søren Kellenberger: It is. Uh, but that is what we do every day, so, uh- Yes, I’ve noticed … yeah, so
Allen Hall 2025: so- You take on those challenges
Søren Kellenberger: So we are optimizing our machines to be not only fit for one-offs, but actually to go into a manufacturing, uh, process. So we have op- optimized our machines a lot with, uh, automatic alignment and, uh, stuff like that to, to really make that process, uh, easier.
Because it has been considered that when you had to machine a flange, you weren’t in [00:09:00] control with your production, uh, processes. But I think that is, um, a bit of a misinterpretation. It’s, it’s a little bit like saying when I have a casted component, I cannot get a bearing fit, uh, in my cast process. That’s not because your cast process is wrong, there’s just some limitations to what you can do.
Sure. And it’s basically the same here. Yes. And, and if you apply that con- uh, planned machining, you can gain some real benefits, uh, later on and the cost will, of course, drop dra- dramatically if you plan it, rather than call for one, uh, every time you have one that is out of tolerances and, and you can even narrow those tolerances down and get the benefits from maintenance-free bowler connections.
Allen Hall 2025: Right.
Søren Kellenberger: Uh-
Allen Hall 2025: Right, ’cause you’re gonna pay for it for the next 20, 30 years. Yeah. Yeah. That’s absolutely right. Now, you’re getting involved in some of the safety aspects of operating a turbine. Uh, some of the pins and the lockouts on the low-speed gearboxes get a little worn over time, so the hole [00:10:00] you put the pin in gets worn.
There’s a lot of loads on that and- Yeah … it starts to oblong out and eventually, if you’re trying to work on that gearbox, you’re trying to keep that and your technicians safe, which is what you’re doing- Yeah … that lockout pin doesn’t quite fit in the hole and it creates a little bit of a safety risk.
Yeah. So now CNC on-site’s coming in and saying, “Hey, wait a minute. We can realign that, clean that hole up, make that safe again.”
Søren Kellenberger: Yes.
Allen Hall 2025: Explain what that looks like and what that process is to do that.
Søren Kellenberger: Yeah. So again, it’s the same thought like with the, with the O-ring, uh, that instead of bringing a component down and trying to fix it, we have designed some machinery we can bring uptower and then make that repair.
So basically what we do is that, that we mill that hole a little bit larger and then we bring a bushing, uh, that we, uh, freeze into that hole- Okay … and to recreate that tight fit again with a, with a locking pin. Uh, so it’s, it’s not that [00:11:00] complicated, but you still need to know, of course, what you are doing.
So finding the center of the original hole is one of the critical things because you want the center of the new ring to be in that same position- Sure … to make sure it fits with the pin
Allen Hall 2025: right. So- Right. You can’t just take a drill up there and try to clean out that hole. No, no. That is not the way to do that
That,
Søren Kellenberger: that
Allen Hall 2025: won’t work. No, no . I’m sure it’s been tried, but- Yeah … no, you wanna have accurate mach- actual, uh, tight tolerance machinery up there to, to align that hole, drill it properly, put that insert back into that spot- Yeah … which is gonna be a hardened insert so it’ll last longer, right?
Søren Kellenberger: Yeah, yeah.
Allen Hall 2025: So once you do that, y- it’s a permanent fix to a otherwise nagging problem.
That’s wonderful.
Søren Kellenberger: Yeah.
Allen Hall 2025: So, th- again, that kit just goes right uptower, right up the, the lift, right up the cl- crane- Exactly … and bang, you’re done. Yeah. Okay.
Søren Kellenberger: So all our machines are designed to be able to be lifted with the internal crane-
Allen Hall 2025: Yeah …
Søren Kellenberger: of that specific nacelle.
Allen Hall 2025: Okay.
Søren Kellenberger: So obviously as the cells go bigger, they have more load cap- uh- Me too
load capacity. Yeah. So for the smaller [00:12:00] turbines, the machines come in, in a bit smaller parts- Okay … so that we are sure we stay within that 250 or 500 kilogram or even whatever the limit is of, of that- Yeah, yeah, yeah … crane. And then we can, uh, reassemble everything uptower and still do tolerances within a few hundredths of a millimeter.
And, and I think that is, that is really the core of, of what we do that, that we can achieve those workshop tolerances on site, um-
Allen Hall 2025: It’s crazy when I tell people that. I say, “Well, you know, CNC on-site, they can’t… I mean, those, those tolerances can’t be that tight.” And I say, “No, no, no, no. They’re talking about, you know, fractions of a millimeter,” which in, in American terms means fractions of a mil.
Yeah. That’s 1/1000th of an inch. That’s the tolerance you’re doing.
Søren Kellenberger: Yeah.
Allen Hall 2025: Uh, and that means quality at the end of the day. If you can machine things that tight, that means what you’re getting is gonna be right for that job. Yeah. It’s gonna fix that, fix that problem permanently, which is the goal. Yes. Don’t recreate the problem.
Just fix it once and be done. Now, blade root [00:13:00] inserts, huge issue. CNC on-site has been developing tooling to drill out those existing inserts and, and put in new inserts, and you’re having success with that.
Søren Kellenberger: Yeah.
Allen Hall 2025: That’s a… it seems like a complicated process, but you have owned that quite well. Talk about what that machinery looks like today, how you’re doing that process, and what have you learned from doing some, uh, field work.
Søren Kellenberger: It’s, uh… we actually, we’ve, we’ve developed two different machines now. Okay. So we, we have, we have one that is, uh, fully CNC controlled, uh, when you need to do a lot of bushings. Yeah. Um, that one takes a bit more, uh, time to set up, but, but, uh, each drilling process is, is really fast. Uh, and then we have developed a semi-automatic machine as well, uh, which is a little bit easier to mount, mounts directly on the blade.
And it’s, uh, really perfect when you only have smaller areas of the, the blade root where you don’t need to replace all bushings- But maybe typically it’s, it’s in the high load [00:14:00] area, which is 15 to 20 bushings maybe. Right. Something like that, right? Yes.
Allen Hall 2025: Yeah.
Søren Kellenberger: So, so there we can just mount it directly on the blade and, and then drill from, uh, from there.
Um, and it works really well. We completed, uh, the first large scale, uh, commercial, uh, project, uh, together with our good friends from, uh, We4C. Uh- Right.
Allen Hall 2025: Yes.
Søren Kellenberger: And, uh, and now we are producing, uh, two more drilling machines- Oh … uh, for, for new upcoming, uh, projects also together with, uh, the guys from, from We4C.
Allen Hall 2025: Wow.
Søren Kellenberger: So now it’s, it’s starting to, uh, to pick up. Um, it’s been a relatively long process, and I guess no one really wants to be the first mover on, uh, on new technology, right? Right. So we’ve had a lot of questions. Oh, that… And that looks interesting, but how many, uh, turbines, uh, or how many blades have you repaired?
And it’s been up until now, well, it’s only tested in the lab. Uh, but now we have the first, uh, large scale commercial, uh, project with, uh, 26, uh, turbines, [00:15:00] uh, repaired and, uh, and 1,000 bushings, uh, that were replaced, uh, across those, uh, 26 turbines. So-
Allen Hall 2025: Wow …
Søren Kellenberger: so I guess that is now large scale. Uh-
Allen Hall 2025: That’s large scale.
Yeah. Yeah. I would consider 1,000 a large scale test. Yeah. Yeah. Yes. And that brings all those turbines back to life.
Søren Kellenberger: Absolutely. They are up running, uh, full power again, so, uh, that is, uh-
Allen Hall 2025: That’s huge …
Søren Kellenberger: really nice.
Allen Hall 2025: For the operator, I’m sure they love that.
Søren Kellenberger: Yeah. And, and of course, uh, there’s, there’s been a lot of discussions about blades and, uh, bla- the, the waste, uh, issue you have on, on worn- Oh
out blades. Sure. So by being able to fix them instead of replacing them, not only is the, the cost for fixing a blade a lot lower than buying new ones, uh, but, but also from a, an environmental perspective. The not having to scrap them and create that waste is, uh, is also a nice, uh,
Allen Hall 2025: thing. Yeah, it’s one of the things that pops up more recently about replacing blades, and I think the [00:16:00] industry and the operators are pushing back on that.
Uh, because a lot of times the OEM wants to replace a blade, it’s just easier for them to do.
Søren Kellenberger: Yeah.
Allen Hall 2025: But the reality is, is that yeah, you’re creating this additional problem. What are you gonna do with the disposal of this blade? Do we really need to do that? Is it so far gone that I can’t recover it? I think a lot of times, especially with fiberglass blades- Yeah
you can bring them back to life.
Søren Kellenberger: Yeah.
Allen Hall 2025: Just with a little bit of engineering, uh, prowess and some good machinery- Yeah. You can, you can make magic happen, and that’s what CNC OnSite is doing. So that, that’s really amazing that, uh, you’re starting to get more adoption of that on, on the blade root inserts. I know across the United States there’s all kinds of issues, and you’re proving it out.
I think the adoption rate in America and all over is gonna really step up. Now, uh, you always have some cool new project, sort of top secret. What are you working on that the world needs to know about?
Søren Kellenberger: Yeah. W- I mean, we are constantly, uh, [00:17:00]expanding our, our line of services. Uh, so- Sure … so we are just out there trying to listen to what kind of issues do we see in, in the industry-
Allen Hall 2025: Yeah
Søren Kellenberger: and how can that be fixed, uh, uptower. So, so some of the, the latest, uh, innovations we’ve been doing is a, a new machine on, um… to, to do shaft milling. Uh, so that c- that can be on generator shafts, uh, for instance. There are some machines out there, but we’ve decided to go, uh, against CNC control- Okay
because it gives us a lot of, uh, opportunities both on, on speed, uh, of the process. It’s a more safe, uh, way to, uh, to do it.
Allen Hall 2025: Sure.
Søren Kellenberger: And we can actually also do different, uh, shapes on the shaft, so, so we can do more advanced, uh, repairs. Okay. We, we don’t need to stick to a certain diameter all the way. Now we can, we can mo- make grooves, and we can do, uh- Really?
all sort of sorts of stuff, uh- Oh … along that process because it’s CNC controlled.
Allen Hall 2025: Oh, sure. Okay. Um, and- Boy, okay. That makes a lot of sense. So you can actually take a, a, a basic, [00:18:00] basic, basic design of a shaft and make modifications to it- Yeah … to extend the lifetime and make it work better.
Søren Kellenberger: Yes. So typically we would mill down, uh, the shaft and- Sure
install a sleeve- Sure … to recreate a, a bearing fit, for instance.
Allen Hall 2025: Right. Yeah.
Søren Kellenberger: But we have possibilities to, uh, to create, um, grooves or anything that would do a stress relief or whatever you need, lubrication, or if you, if you want to do something, uh, afterwards, we, we can do that with, uh, with our machines.
Uh- Yeah. So yeah, we, we have some new machines for, for hollow shaft, uh, machining, so we can do stuff, uh, inside the main shaft, for instance. We can do stuff on the, the outside, as I mentioned on, on the generator shaft, but that could be on the gearbox as well. So- Sure … sometimes we see issues on the main shaft to, to gearbox, uh, connection.
Allen Hall 2025: Yeah.
Søren Kellenberger: We are able to, to fix, uh, those, uh, things uptower. Wow. And, uh, so yeah, lot of new, uh, stuff being, uh, developed.
Allen Hall 2025: That’s, that’s awesome.
Søren Kellenberger: [00:19:00] Yeah.
Allen Hall 2025: And I, I know you guys are busy, but- If somebody wants to get ahold of CNC Onsite and get work done this year, they better be making phone calls to you- … quickly. So I, I know your order book is filling up and you’re, you’re having to devote crews and machinery and time.
Yeah. How do people get ahold of you and get on that contact list and can start working the process?
Søren Kellenberger: I would say go into, uh, cnconsite.dk and, uh, there we have all our, our contacts. Uh, so just reach out. There’s a, yeah, formula you can, uh, fill in, uh, or you can find our direct contacts in our webpage, and, uh, then we can start looking at it.
So we are quite busy, but we are always- Yeah … open for, uh, discussions and, uh, yeah. That,
Allen Hall 2025: that’s a problem with being successful, is you’re just always busy running around trying to take care of problems, and that’s the thing, is that everybody I talk to that’s used CNC Onsite loves it-
Søren Kellenberger: Yeah …
Allen Hall 2025: and loves the process and loves the work you do.
So there’s gonna be a lot more phone calls and a lot more orders coming your way, and that’s- Yeah … that’s awesome. [00:20:00] Soren- Yeah … it’s so good to see you again and it’s so good to see you in person. Yeah. And congratulations on the promotion and everything that’s happening at CNC Onsite.
Søren Kellenberger: Thank you, Allen. It’s a pleasure.
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