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Blade Repair Academy’s Expert Technician Training

Blade Repair Academy in Tennessee offers comprehensive blade repair training programs for technicians. Alfred Crabtree, Founder and CEO, and Sheryl Weinstein from SkySpecs highlight the importance of technician competency, hands-on experience, and standardization in the wind industry.

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!

Allen Hall: Alfred and Sheryl, welcome to the program.

Sheryl Weinstein: Thanks.

Allen Hall: So we’re in Dunlap, Tennessee, not too far from Nashville, uh, and also close to. Chattanooga Chattanooga, and we’re in the Smoky Mountains ish region.

We’re

Alfred Crabtree: no, we’re, we’re, you could consider it Appalachia for sure. Sure. Okay. Uh, we’re on the, in the valley called the Seche Valley, uh, which splits the Cumberland Plateau. So we’re, we’re in a valley and we have hills a thousand feet above us here. Yeah. Either way. It’s beautiful.

Joel Saxum: Yeah. It’s a great drive in here.

Alfred Crabtree: Yeah. It’s a unique place. Yeah.

Allen Hall: And we’re at Blade Repair Academy, which, uh, if you’re not familiar with Blade Repair Academy, you should be. Uh, because a lot of the good training that happens in the United States actually happens to play repair, repair Care blade, repair academy. Uh, yeah, it’s been a long week at uh, OMS this week and we got the introduction today.

This is the first time we’ve been on site. That’s right. And, uh, we wanted to see all the cool things that are happening [00:01:00] here. And it really comes down to technician training competency. Working with blades, working with tools, knowing what you’re doing up tower when you’re on the blade, which is hard to train.

It’s really hard to train, and both you and Cheryl have a ton of experience being up on blades and repairing blades and scarfing and doing all the critical features that have to happen to make blades work today. It’s a tough training regimen. There’s a lot to it and a lot of subtleties that don’t always get transferred over from teachers to students unless you have.

Done it for a number of years. You wanna kind of just walk through the philosophy of Blade Repair Academy?

Alfred Crabtree: Yes. The, uh, you’ve, you’ve outlined quite well some of the issues. The environment where we work is very hard to take a ti the time to put somebody through a training regimen. We’re so constrained by weather windows and then.

You know, even if the weather’s nice, lightning can come, wind [00:02:00] speeds can cut off your workday. So production, production, production is what’s important. And Cheryl and I both come from the rope access method. And in the rope access method, 95% of the time you’re up there alone. And if you’re up there and you’re producing, you’ve got your blinders on.

Speaker 2: Mm-hmm.

Alfred Crabtree: And you’re not ready to share with somebody else what to do.

Speaker 2: Mm-hmm.

Alfred Crabtree: With the basket or platform, you can have two even three people up on Blade, but it still has all these constraints of get the job done, get the job done. There’s a lot of stress up there. And having the bandwidth to take on new information or to challenge some preconceived notions or try, that’s not the place to do it.

So knowing that. Blade Repair Academy is built so that we have an environment that simulates all of the up tower stuff without being up tower. And you’re gonna have the time you need to invest in your learning without consequences. Right. So it’s a very much a [00:03:00] about creating the right environment to uptake the new information.

And we have found a lot of help from. Manufacturers and suppliers in the industry to sponsor us because obviously it behooves them to have their materials in the hands of trainees. So we’re also able to help companies come up with, uh, new solutions, try new products.

Speaker 2: Mm-hmm.

Alfred Crabtree: New, uh, you know, what’s the best practice.

For this, if you’re up on Blade and you have a way of top coating and you get a new product and your way of top coating doesn’t suit that product, well chuck it down. I’ll never touch it again. Yeah. Because I did not perform well here we can, we can give you training. We have, of course, been trained by the suppliers about what’s the best product to use, what’s the best way to go about things, and then, and then we can disseminate it.

So that’s the fundamental reason why the space is. Is [00:04:00] what it is.

Joel Saxum: Yeah. And I think that that’s, that’s a good segue to be honest with you, right here, right behind these doors you have a classroom. That’s right. Right. So in this facility, all composed in one, we have a classroom here we have your additive and subtractive.

I liked how you said that to us when you’re giving us the tour. Uh, but we’ve got a, a grinding booth basically over here and we’ve got, um, a layup area here where you can teach. 16 people at a time.

Alfred Crabtree: That’s right. Yeah. That would be max

Joel Saxum: for sure.

Alfred Crabtree: Yeah.

Sheryl Weinstein: And in a vertical surface, so, ’cause all the stuff that you’re doing in the field, right, is always in a vertical surface.

Mm-hmm. So there’s a, there is a big difference between working where gravity is sort of against you, especially with larger laminations and things like that. So being able to do your training and simulate the same, a similar way that you would work in the field is pretty critical, I would think.

Allen Hall: And actually working on.

Actual repairs. Simulated repairs, yeah. Mm-hmm. Now, don’t explain how you created them, because I know secret sauce. It’s a secret sauce. Yes. But I did look at the blade [00:05:00] damage. It, it looks exactly like a lightly strike. Yeah. Which a predominant amount of repairs are about, unless there’s, you know, serial defects, as Cheryl has pointed out numerous times, but.

Being able to repair something that’s quasi real is critical because we’ve been to other places and the repairs are, well, I’ll take a hammer and I’ll hit this and, okay, sure you got a DA, you gotta repair that. But that’s not real. And getting, getting the people to use the tools in the right way, vertically

Speaker 2: mm-hmm.

Allen Hall: Is the key. Because although the, the, the article, the test sample isn’t moving around like you are up on a blade, it’s still difficult. And unless you have the proper techniques and the approaches, yeah, it’s gonna be dang near impossible. We explain some of the blade repairs that Joel and I have seen more recently is like.

It’s a little rough and it shouldn’t have to be so rough because it is a skill that you have to learn and acquire over time. But you have to know the fundamentals. That’s what Blade Repair Academy is here to teach you those [00:06:00] fundamentals. Like, yes, it’s gonna take time, but if you work it this way, at least you’re gonna be successful.

Alfred Crabtree: Yeah. And if you’re managing a team of employees who are doing this, it, it would be great to have the insight of what your teams. Strengths and weaknesses are, yeah, you can figure out how to deploy people, but also how to, you know, maybe fix some of those problems. Mm-hmm. Our panels that you brought up are standardized.

Everyone looks exactly the same. It’s the exact same makeup, and we standardize the damage. So when somebody has to repair damage here, the core removal size is the same on everyone. That way when we’re comparing the reports, you can actually have a apples to apples comparison of the, the trainees. Outcome.

Speaker 2: Mm-hmm.

Alfred Crabtree: And now you, you know, in, in the model that you talked about where people will go to a, you know, their junkyard of blades and they’ll find spots on blades to put their eight guys on. Those eight people are not gonna be doing the same repair. And even if they are collecting data, what are you [00:07:00] comparing?

It’s not

Joel Saxum: apples to apples. Yeah. It’s not.

Alfred Crabtree: So we really tried to start from the beginning, fresh with a whole new idea of how to approach this. Mm-hmm. By not being attached to an ISP, we don’t have to deal with. Oh, here, use all our leftovers. Yeah. Yeah. That’s your training budget. Yeah. Yeah. And oh yeah. We, you know, we’re an, we’re a owner operator, so yeah.

Go work on that blade in the grass. Mm-hmm. That those limit what precious time we have available to train. Yeah. So this thing from the ground up is about. Making as much advance in the skillset and understanding that technician in the, in the week that they’re here.

Joel Saxum: I think that was a really cool thing we touched on as well.

Your, your team here as well, Cheryl. Thanks for traveling up to, to hang out with us. Offer some insights too. But you guys, because you’ve been in the people that have developed a curriculum yourself, Cheryl, your, some of your team sitting over here, uh, and, and people around the industry that have helped out with the place, you have the ability of like, okay, we have.

Eight brand new technicians. Let’s make [00:08:00] sure we walk through how to measure from the trailing edge to the blade center up, mark this thing out, these kind of things all the way to some stuff that I didn’t really think about that much. Like I’ve used an angle grinder before, right? But I’ve never looked at five different ones and decided which one would be the best for my hands.

Thinking about it up on the blade, how you’d handle it with your fingers, these kind of things like, I was like, man, that’s, those are real insights that you’re not gonna get to learn. Like why put someone up to let them have a whole season or a whole summer, two summers figuring out how to hold a grinder?

Well, when they can learn from someone that’s been doing it for years and years and years and can teach them these things. So from advanced or from very beginners learning fundamentals to advanced training, you guys have gotta cover here.

Alfred Crabtree: There’s something here to glean for everybody, and even if you are a well experienced technician, maybe what you’re gonna get most is learning how to talk the language of the new techs and the new hires who are getting the.

Introductory course training. You know, our, our el our basic course is called support. It’s 40 hours [00:09:00] and it’s really about making, uh, an employee who can support a lead. And then if that person follows up with the lead training in a whatever interval of time of their choice, which is kind of another benefit here, we can train you any week of the year.

That is where we start to really get this, we call it the retention vortex. Right where we layer up technician training and somebody who’s had level two now gets a level one with them. Now there’s some synergies. Now they’re getting some really efficiencies. A commonality of language, a commonality of process, you know, eliminating variables.

Uh, and that’s how you’re gonna have to build new net capacity and build new teams

Allen Hall: and that common language. Is really unique, but that comes from your experience in the field, mostly at rope partner, where you both really got your teeth in this industry.

Speaker 2: Mm-hmm.

Allen Hall: But communicating to one another correctly so you can pass along to the next crew or even explain what you did to the engineer, the.

Properly [00:10:00] there is. There is a culture to it. There is a language to it, and you just don’t pick that up. By going from wind turbine to wind turbine. You pick it up in training from someone who knows how to do it. It’s really critical.

Sheryl Weinstein: It’s pretty critical to have baseline training. I think it is also very important to follow it up with field experience and skills building because every blade model is different.

Every repair is different. You’re always gonna encounter something that deviates from that like standard approach to your repair. You have to kind of know how to problem solve, and that kind of only comes with the field experience, but having a more standardized training to start with, it’s something that industry doesn’t really have and is really needed.

I think across the board it also helps, you know. Owner operators or even OEMs kind of track their ISPs and understand what level of text do you have, what experience do they have and how, how does that differ across their different [00:11:00] levels? If we have one ISP training one way over here and another one training another way over here, and they have different sets of certifications.

It’s really hard to keep that all together and evaluate it as an owner operator or an OEM, you know, using a vendor. So I think having a place like Blade Academy that’s agnostic and separate from like, you know, the actual ISP really helps to standardize that a bit more.

Allen Hall: Yeah, because the key is we’re getting to, well, we’re gonna cross a hundred thousand turbines in the United States pretty quickly.

Yep.

Joel Saxum: Before 2030, or probably rated about 2030.

Allen Hall: Right. That’s. Soon. Mm-hmm. How are we gonna manage that? And there’s a lot of new people coming into the industry, obviously. How are we gonna train ’em up properly? How are we gonna communicate to one another? And there’s just so much movement in the industry. I.

It makes it hard, I think, because weirdly enough, I think ISPs develop their own little culture about how to deal with things, and then they hop to the next company and it’s a different language. Exactly. And that needs to go away. Yeah. There’s a,

Alfred Crabtree: there’s a branch of business that’s [00:12:00] OEM centric and there’s a branch of business that’s asset owner.

Yeah. Post warranty. And those are really two different things. And, and there’s a veil of secrecy between one and the other. Yeah. And we kind of feel here at Blade Repair Academy that we’re like this polyglot that can talk to everybody because we don’t have, we’re not an ip You’re not competing, we’re not an O You’re not competing.

Yeah, we’re not competing. But we, we, you know, we have the, we wanna provide this data as a clearinghouse. You know, we talk about certification in the non standards. Well, the way we deal with it is we’ll give you a certificate. And it’s got our brand on it. But you know, what does that mean? Yeah. What? That And $4 will get you a Starbucks the way we do it, maybe not even then.

Right? The way, the way we, not four bucks

Sheryl Weinstein: for Starbucks, maybe 10

Alfred Crabtree: and a half hour wait in the line. But the way you know, what we do is we provide you with a deliverable. We knew, we knew that. Okay. Our certification is, you know, ether.

Speaker 2: Mm-hmm.

Alfred Crabtree: But [00:13:00] this report. That everybody who comes through here generates that you can compare.

Now you’re gonna have to go to work and study these reports when you get ’em as a deliverable.

Speaker 2: Mm-hmm.

Alfred Crabtree: As a, you know, an employer, but we we’re giving you what you need. Mm-hmm. To make some decisions about what do I have to work on, what else do we need to improve upon?

Allen Hall: Yeah. Not everybody’s built for this job, but you wanna be able to suss that out.

Earlier rather than later. Yeah. Right. I mean, there’s other things to do with wind turbines that don’t evolve blade repair. And if they don’t necessarily have the skillset or the comprehension to do some of these more complex things, maybe blade repair is not it. Right. But rather know that now. Yeah.

Right. And the Blade Repair Academy is a place to do that because there’s a standard there, right? Mm-hmm. And I, I, as Joel has pointed out, yeah, there’s a lot of erratic training that goes on. Mm-hmm. You can’t compare student A to student Z. Blade repair academy. You can.

Alfred Crabtree: We can. Mm-hmm. Right.

Allen Hall: And if, if I’m an ISP, I want that.

Sure. I want you to tell me [00:14:00] who’s on top and who’s kind of the middle so I can make decisions about where to deploy ’em and who and who to put ’em with.

Joel Saxum: Yeah. ’cause at the end of the day, every ISP, uh, every ISP that’s trying to grow and scale effectively is trying to do that at the end of the year, right?

Yeah. They’re looking through, they’re grading their technicians, finding out who’s the next lead, who’s this, who’s that? But this is a great way to do that, sort them through in a controlled setting. I mean, we sat in, in your training facility in the actual classroom here, and you walked us through some of the online, the online training platform that you have built.

Some of the things the students have to do before they get here, and then kind of how you walk ’em through things, and it’s impressive. It’s good stuff, right? So when you have that combined with the both sides of blade repair, subtractive, additive, right? You get to get this, this holistic view of what that blade technician can do.

Yeah. Right? And that’s, that’s one of the things you guys offer here, which I think is fantastic.

Alfred Crabtree: Yeah. And we’re trying to constantly improve, you know, we’re talking with OEMs about dissemination of operating procedures or work instructions, share with us [00:15:00] work instructions. We’ll build analogs. That we can train to.

Mm-hmm. And we can test off of it. We can verify skill sets. You know, we have a lot of serial flaw campaigns out there that are critical. And do we wanna unleash anybody on it or do we want to know that those people can do it? I think everybody wants to know that they can do it, whether they’re the.

Technician themselves, or the person writing the checks.

Speaker 2: Yeah. Mm-hmm.

Alfred Crabtree: Everywhere in that loop wants to Now not everybody wants to pay for it. Yeah. But we all need it.

Speaker 2: Yeah.

Alfred Crabtree: And so somewhere along the line, you’re paying for it in the forms of our favorite acronym, COPQ. That’s

Joel Saxum: right. Cost support, quality. You know, speaking about the idea of serial defects or known problems in the industry and how to prepare people for those, how do you prepare people for those?

Well, they gotta get the experience by just. Grinding away Top coat and getting into him. I walked in here and I looked at this blade sample we have here, and I was looking at it and I go, it looks like a 48.7 C Oh yeah. Buddy walks over you like our 48.7 C I’m like, [00:16:00] man, you guys did a good job on, you know, like, so, so I made a lot of money on 48.7, you know, so to walk in here and see these different tickets that you guys have built, you know, carbon plank and different things with carbon spars and hey, we’re gonna do a carbon spa repair.

We have this boom, now we can work on it. Mm-hmm. You know, and we’ll

Alfred Crabtree: work with you to solve your problem in a really quick, efficient manner. Mm-hmm. You know, I think one of the things that we have is operational readiness. Most people who are training in-house flip their hat around for a couple weeks and train composites.

Mm-hmm. In a limited capacity in the warehouse or at the dock at the truck during January. During January, whatever. And then they flip their hat back on and they go deal with it. And I think the hiring situation is so tough. Like working at Height, you probably need to make sure somebody can tolerate working at height.

Yeah. Before you invest in composite training, I mean. You have so many things you have to juggle in your particular situation. When do I put money in this person? We get that. [00:17:00] And so we’re open all the weeks of the year. So we can do this at any time. Of course, everyone wants it in the end of first quarter.

Mm-hmm. You know, right before the season starts. So we have a, you know, you have to, you gotta schedule with us, but we can really do this anytime. And so you don’t have to one and done and live with it.

Speaker 2: Mm-hmm.

Alfred Crabtree: You know, it. You can fit the training into your hiring schema wherever you feel fit, and you can hire people.

And if there are stars, bring them in for their secondary, they’re execute their lead training whenever you want. You know, so you can, we can be very flexible and in the advanced stages we will make what you need, you know, obviously has to make business sense for us, but we’ll make blades to replicate the problems you’re facing.

Sheryl Weinstein: And I think in terms of like what you were saying when you’re working on, you knows whether we wanna call them recurring issues or serial defects. A lot of it is awareness, right? It’s awareness [00:18:00] of understanding the blade structure, at least at a basic level. It’s awareness of understanding what you’re looking at.

It’s, you know, we’re only gonna better inform the industry and the OEM if our technicians have a level of awareness to sort of bring up things that they see as they’re doing repairs. So if they notice that, for example, the, the fibers are misaligned, right? That could indicate that that was a wrinkle, and them having that level of communication or documentation will only help then inform the OEM.

Like, is this the reason behind that problem? And so I think like. You know, with Alfred and, and the curriculum here at Blade Academy, them kind of, you know, setting a standard for how, how you know, the structure of the blade, the different types of blades you may see, whether they have carbon fiber in them, or you know, fiberglass, UD spars.

Where those things are located, [00:19:00] what to be aware of as you’re removing damaged material. It’s really critical to the overall quality and just the awareness of the tech on the blade and that feedback loop that we’re lacking so much in this industry.

Alfred Crabtree: Yeah, for sure. Yeah, and we have our boilerplate products that come from, you know, like, uh, Cheryl was my mentor at RP and wrote partner, and she taught me a lot and a lot of the.

The, the way we do things here comes from the rope, a rope access paradigm, which, you know, actually is backward compatible because if with rope access, you’re doing things alone.

Speaker 2: Yeah.

Alfred Crabtree: So if we’ve have ways and, and processes that allow that to happen alone, then when you’re on a basket or a platform with an extra person, you can only benefit Yeah.

That much easier. Yeah. Um, it’s where we come from, you

Joel Saxum: know, and, and that’s a good point, right? Like when we’re sitting here, rip Blade Repair Academy. Alfred, you’re here. Cheryll, you’re joining us today. These are two X blade technicians that have been on all kinds of blades. They have been up and down on ropes.

So it’s training by [00:20:00] trainers who have been the technicians that’s important. Who have seen the problems. Yeah, yeah. You know, who have lived, have lived that road life. We talked, you’re joking about living in hotels, right? Mm-hmm. Like that have done, gone through that, right? So you’re learning from people that aren’t just like, oh, I hate the idea of going to a university and learning HR or something, whatever, from someone who’s never done it in the real world.

Yeah. You know, uh, the trainers here have done it in the real world, um, and it shows.

Alfred Crabtree: Thanks, man. And you know, the other thing too is our tagline is practical and contemporary. And the thing is, I’m no longer contemporary. Like I left the field years ago. I rely on folks like Cheryl, who’s still in the, in the Blade Services game over there at Skys Specs.

She’s on, she’s got a full subscription to the cereal floss that are out there.

Joel Saxum: Yeah. Probably the best one in the industry, to be honest with you.

Alfred Crabtree: Well, you know. Uh, I think so. I don’t know anything about serial flaw, but it’s, it’s input from the rest of the industry that’s gonna allow this to continue.

Otherwise, we’re gonna be, you know, [00:21:00] a 10-year-old standard that isn’t relevant anymore and that’s not what we want to do. So, outreach like Cheryl and I are talking about, Hey, what is it in your product line that should be in our product line? And I want to talk to OEMs and, uh. Owner operators, you know, what is it?

What are your pain points? What in your fleet is needing attention? And of course, we’re gonna do all this with the business case, right? Mm-hmm. Like we wanna take LEP products and place them head to head and give a two day clinic or seminar to stakeholders, to purchasers. You know, we wanna give our, our two, our five day course condensed into two days.

Where people who are stakeholders who are making decisions about where to place technicians, they should get out here and gr and grind a little bit and get a little empathy for their position. Hard work. The hard work of the

Sheryl Weinstein: hard work that it is. Yeah. And then kind of understand

Alfred Crabtree: from another side where the [00:22:00] communication breakdown is.

’cause it’s, it’s not all the texts, right? Mm-hmm. You know, they have a, you gotta understand how heavily loaded they are, you know, when they’re in the field. Mm-hmm. Um, so we’re, we’re at the place now where we’re really looking to do some outreach and talk to, uh, regulatory bodies that are starting to come up with standards, right?

Like the IEC group met and pro produce a draft standard and they’re gonna work on the repair standard. And that’s a, a little bit of a ways away, but I can’t sit around and wait for, for standards to come to me. So we got this thing started. If you build it, they will come. You guys came, you know, Cheryl came and, um.

We we’re really proud of where we’re at, but at the same time, it’s like, okay guys, the rest of the industry, now we’re here. Now you need to know, now you need to take advantage of us. Mm-hmm. And help tell us what you need. So I think the

Sheryl Weinstein: LEP thing is a really good call out because I do see a lot of customers questioning what do I choose?

How do I know [00:23:00] what to choose? Absolutely. Should my vendor be telling me what to choose? And that’s what happens in many cases, is that the ISP just kind of tells the owner operator. This is what you should use. Well, why, and, and what, you know, how have we ever really sized up like one against the other?

Like in any true, I don’t know, study? No. And a lot of the, a lot of the like. Those different types of LEP, the, the companies that you know have these, they don’t have a lot of good documentation on showing like how their products stand up. I mean, it’s kind of, it’s more theory based than anything. I mean, they put ’em through rain erosion tests and whatever, but.

It’s, I feel like that’s a tough space. It’s also a very, like, um, a very tough scope of work to have high quality at. So more training around it is necessary. You know, repair companies don’t wanna use their high skilled repair techs for the LEP because they need them for the more complex repairs [00:24:00] yet. The LEP is so susceptible to quality issues, and if you’re gonna pay an extreme amount of money to, you know, put the LEP to fix your erosion, put the LEP on blades, hope for a performance improvement, and then it fails in a year.

I. That’s no help to anybody. So these different products, they also come with different price points. Like, can we really value the shell over the coating? I, I just find that this is a tough space. And so doing something like that and doing more training around LEPI think is probably pretty important. Yes.

You know, unless the robots are gonna take it over and then, well, even then, I think it’s the only app.

Allen Hall: The application, that’s the variable there. And not having people trained up for that particular LEP product is a huge problem because it’s super risky. You’re risking all that money and time and having to do it all over again and removing LEP that has been improperly applied.

It’s a nightmare. [00:25:00] Nightmare. Total nightmare. You don’t want that to happen. And I’ve seen sites where that’s happened, getting technicians. Trained properly for the right material and doing that here up in Tennessee is, is the right approach. It’s risk reduction, which is what the industry is in right now.

Risk reduction.

Alfred Crabtree: Yeah. Yeah, we, we’ve beliefs. That’s a great way to put it. You know, if you hire somebody. We were talking earlier how there are like two models. One is like the New York Yankees, where you’re going to be buying all the expensive free agents. You can poaching people from other, you know, trying to get experienced talent.

You’re paying a premium for them, but you aren’t gonna know until halfway through that season how that person is performing. Yeah. You know, that is a lot of. That was, that is a lot of variability that you could control. Mm-hmm. And in a seasonal business, those weeks are really multiplied by two or three.

Right. In terms of like the impact on your revenue and your opportunity to make money. It’s risk reduction, like Alan was saying. Yeah. It’s

Allen Hall: all risk, right? Yeah. And the, [00:26:00] the way that the industry is moving and the pace at which is moving right now, risk reduction starts to move to the top five years ago.

We do a lot of risky things because we’re making money. Interest rates are low and, but today we cannot afford to do that. And if you watch the industry change right now, it is gonna be more focused than ever in having proper technicians on site that they complete the job that they were intended to do.

Precisely, accurately, and once, not twice. Once. Yeah. And that is gonna be the marker of the, whether this industry grows or not. Mm-hmm. And that’s why Blade Repair Academy is needed so much. Now, Alfred, how do you interface with the ISPs, OEMs, and the operators in terms of getting people out here? How do they, how do they push that button and say, Alfred, I’m gonna send you 40 technicians next week.

How does that, how does that go? I don’t quite have that down

Alfred Crabtree: yet. But, uh, you know, it, we talked earlier, it’s a small world. You know, blade repair is small. There [00:27:00] we mentioned if you, there’s a hundred people in the industry you need to know and then you’ve covered it. Um, our, I think we’ve been, we’ve been kind of riding this new wave of like, oh, who’s this new kid on the block?

And, and we can kind of be quiet and still are mysterious. And I pop up at a conference and host a round table or whatever. Uh, so far. It’s mainly been our personal network, which is large enough in this gig to, to get people in. ISPs are much more likely to do it small is ISPs are much more likely to do it.

Owner operators, they’re trying to build their training centers. They have a little different, that’s a different model though. It’s a different model. Um, they’re, they’re tougher to get. So primarily it’s been ISPs. We have definitely a, a, a curriculum for new hires, right? We call it support, but we’re [00:28:00] reluctant to go sell that to the street or to the public.

Like, Hey, enter the industry here, because we don’t quite yet have that, you know, guarantee that people will recognize our certificate and. Use it to hire people. I don’t quite have that system in place. However, I have so much interest from the Department of Labor to support us in creating an occupation.

They want us to build apprenticeship programs. We need corporate sponsor, we need a big employer or to to buy in, and then we can create an apprenticeship program. Then we can find public money for people to get some support to get into a new, a new industry. So, well, they

Allen Hall: need to come out here. They need to come out to Dunlap.

And visit the facilities, talk with you, understand what the philosophy is, see it up close. There’s a lot of them have been to other places. Sure. And see what the differences are here. And, and that’s gonna be the decision maker. They’re gonna see what the product walking out the door is and [00:29:00] go into the classroom and, and get the grinder, right?

Yes. Get, get your hands dirty a little bit. Yeah. And realize, yes, this is what I was looking for to begin with. I just couldn’t find it. And I found it here in Tennessee.

Alfred Crabtree: Yeah, I, I think you’re right. And, and we, we are slowly, you know, bringing people in that we know, like the reason why y’all are here and some other folks have visited us this week is because o and m was in Nashville.

And I was like, come on, come on. We’re only two hours away. We’ll buy you lunch. Come on. Pretty place. Yeah. You have to see this place to understand it because we are sort of, you know, outsiders, right? I mean, we’re, we’re from the, the industry, but we’re not. We’re not a spinoff of any company. We’re not a division of an ISP.

We’re totally organic and unique in a, in a part of the world that doesn’t have any wind. So, yeah. Uh, but once you get here, you get it. The economics make sense. You know, we couldn’t do what we’ve done anywhere else as cheaply as we’ve done, which means we feel like we’re super value rich for what you’re paying and for the amount of time that you’re spending [00:30:00] here.

Allen Hall: Oh, 100%. Uh. Let’s give the ISPs, the OEMs and the operators, uh, where to go. What’s the website? Where can they find you on LinkedIn?

Alfred Crabtree: We’re at blade repair academy.com. Uh, we’re located in Dunlap, Tennessee. We’re on Blade Repair Academy at LinkedIn. I’m Alfred Crabtree. You can find me there. Uh.

Allen Hall: Yeah, that’s where you need to go because that’s how the process starts.

If you want to have high level technicians that really know how to work on composites and are working with real materials on simulated, but. Pretty realistic damage. Yeah. Weirdly realistic. Yeah. Secret sauce. And to get some sort of validation and to kind of get graded. Mm-hmm. And so you have a, a, a sense of how they’re doing.

You’re going to have to go to Blade Repair Academy. You need to get out to Tennessee and you better check it out because I, Alfred, I gotta be honest, this place is gonna get crazy busy [00:31:00] and I’m gonna have. ISPs calling me saying, can you get a hold of Alfred and get me inside? Can you get me in? No, I can’t because it’s Alfred’s deal and Alfred’s gonna run this thing.

We’re very approachable and, but very approachable. Keep calling, he’ll answer and take care of you, but it’s gonna get busy because the philosophy here is the right one. Thanks. So congratulations for putting this together and thank you for the invite. Uh, it is been a pleasure to see it. It’s uh, it, it’s great to know that you are around and you’re helping the industry.

Alfred Crabtree: Thank you. We appreciate it and you guys are a great clarion for the industry. A great voice. So, uh, those words, uh, right in the fields. And I wanna thank Cheryl too for coming out. I haven’t seen her for a while. It’s funny ’cause today I, on my phone, you know, five years ago today, she and I were here before this business existed as rope partner employees working on r and d week doing infusions.

So, uh,

Sheryl Weinstein: the space has transformed. It’s amazing. Yeah. You guys have done a, a [00:32:00] really great job. Like I, yeah, I think you’re definitely pushing the industry into a, like a new realm. Bringing something that, that it really needs, you know, that we don’t have at the moment or that we didn’t have.

Alfred Crabtree: Yeah, well hopefully, uh, it improves everybody’s quality of product and the bottom line.

’cause uh, you know, that’s what we’ll do. We’ll affect your bottom line for sure.

Allen Hall: So Sheryl and Alfred, thank you so much for being on the podcast. Thanks guys. Right,

Sheryl Weinstein: thank you.

https://weatherguardwind.com/blade-repair-academy-training/

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Is Tesla Powerwall Worth It For Australian Houses In 2025?

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Australia, a country of vast open space and abundant sunlight, has firmly established itself as a global leader in rooftop solar adoption.  

According to recent data, the country has over 3.9 million rooftop systems installed, yielding a combined capacity of approximately 37.8 GW of PV. This remarkable achievement reflects the country’s strong commitment to a sustainable energy future. 

But what happens when the sun goes down or when the grid fails?  

Yes, that’s where home battery storage steps in, and no name resonates more loudly than Tesla Powerwall! 

With the release of the Powerwall 3 and evolving energy landscapes, many Australian homeowners are asking: Is a Tesla Powerwall still a worthwhile investment in 2025?  

If you’re an Australian looking for a home solar battery, Tesla Powerwall is arguably the most popular home battery on the energy market right now.  

So, here’s why Tesla Powerwall could be worth it for your Australian home!

But First, What Is Tesla Powerwall?

Back in 2015, Tesla ventured into the energy storage market with the Tesla Powerwall, a home battery system. This battery system is specially designed to store energy, mitigating the intermittency of renewable energy sources. 

Although Tesla was globally recognized for its electric vehicles, the launch of the storage battery, the Tesla Powerwall, marked another bold leap for the company.  

This home energy storage is a rechargeable lithium-ion battery that can keep your home illuminated 24/7 with reliable power and significantly reduce your electricity bills. 

Powerwall’s smart system can be tailored to your specific energy requirements. This battery can be charged from solar energy, ensuring that power is always available on demand. It essentially serves as a backup power source for nighttime or cloudy days.  

Following their initial release in 2015 in limited quantities, Tesla has continually expanded its energy lineup with larger-scale solutions.  

In 2025, Tesla’s lineup includes three Powerwall models: Powerwall 2, Powerwall+, and Powerwall 3. Each model offers 13.5 kWh of usable energy storage.  

In Australia, Powerwall+ and Powerwall 3 are designed for new solar and storage system installations, which involve integrating solar inverters for higher efficiency. At the same time, Powerwall 2 is often used for retrofitting existing solar systems. 

Now, they also offer different categories, such as the Powerpack, designed for commercial and industrial use, and the Megapack, engineered to support utility-scale grid operations, among others. 

How Does Powerwall Work? Find Out!

In general, the Tesla Powerwall is a rechargeable home battery system that stores energy for later use while providing essential security and financial benefits.  

It works seamlessly with solar panels or the electric grid to manage energy supply and demand in your home.   

It includes energy monitoring, metering, and smart controls, which the owner can customize and control via the Tesla app.  

The system then learns and adapts to your energy consumption slowly over time. It receives over-the-air updates to add new features and improve existing ones.  

How Does Powerwall Work

Here’s a step-by-step guide on how it works: 

Step 1:  Energy Collection 

  • With Solar Panels 

Your solar panels usually generate electricity during the day. From that, some of this energy powers your home, while the excess charges the Powerwall battery.

  • Without Solar 

If you don’t have solar panels, the Powerwall can charge using electricity from the grid when rates are low, for example, at night.

Step 2:  Energy Storage 

  • The Powerwall stores the unused electricity in its lithium-ion battery. 
  • This stored energy is saved for when you need it most, like during peak usage times, at night, or during a power outage.  

Step 3:  Energy Usage 

  • When solar production drops or the grid goes down, the Powerwall automatically kicks in, supplying your home with clean, stored renewable energy.

Step 4. Intelligent Management with the Tesla App 

  • The system learns your energy usage patterns and optimizes when to charge or discharge.
  • You can monitor and control everything through the Tesla app, giving you real-time insight into your energy use, storage levels, and solar generation.

The Australian Energy Rollercoaster: Why Batteries Are More Relevant Than Ever?

Undoubtedly, Tesla Powerwall 3 is one of the most exciting innovations to hit the market in recent years. Tesla’s next-gen home battery is designed to supercharge solar systems and dramatically reduce the reliance on the grid.  

For Australian homeowners, it’s a total game-changer, offering a smarter way to store solar energy and power homes more efficiently than ever before. 

Curious about the other benefits of the Tesla Powerwall 3? In the following part, we’ve rounded them all up for you: 

  • Powerwall Batteries Maximize Self-Consumption  

Using your own solar power, especially during the expensive evening peak, saves you significantly more than exporting it to the grid.  

The Powerwall stores your excess daytime solar to power your home at night with free, clean energy. 

  • Battery Storage Reduced Electricity Bills 

Adding a Powerwall battery to your solar panel can drastically reduce your reliance on grid electricity during peak hours, leading to substantial savings on your energy bills.  

Some reports suggest adding solar batteries has reduced electricity bills by over 70% in many Aussie homes in the past few years. 

  • Ensure Energy Independence & Security 

The Powerwall provides seamless backup power for essential appliances, ensuring your lights stay on, your fridge stays cold, and your devices stay charged during any unexpected blackouts. 

  • Smart Energy Management 

The Tesla app provides intuitive monitoring and control over your energy usage. You can track your solar generation, battery charge, and household consumption in real time. 

This allows you to optimize your energy habits and maximize savings. 

  • Virtual Power Plant (VPP) Participation 

Through VPP, you can earn money by letting your battery support the grid during high-demand hours.  

This will benefit your wallet and contribute to a more stable and renewable energy network for everyone. 

  • Environmental Impact 

Batteries can reduce your reliance on fossil fuel-generated electricity, significantly lower your carbon footprint, and contribute to a cleaner, more sustainable future for Australia. 

  • Increased Home Value and Building Aesthetics 

Homes with solar and battery systems are increasingly attractive to buyers. They often command a premium due to lower running costs and increased energy resilience.

Tesla Powerwall 2 vs Powerwall+ vs Powerwall 3: The Evolution of Home Energy

Tesla’s Powerwall series has become a symbol of energy independence. From the Powerwall 2 to the all-in-one Powerwall+, and now the game-changing Powerwall 3, Tesla continues to push the boundaries of home energy storage. 

Let’s break down what makes each Powerwall unique and why Powerwall 3 is the most powerful one yet. 

Tesla Powerwall 2: The Energy Game-Changer

Launched in 2016, the Powerwall 2 was a massive leap in energy storage for homeowners.  

It is ideal for those with existing solar systems or those seeking basic backup and energy optimization. 

Key Highlights: 

  • 13.5 kWh usable capacity, which is sufficient to power an average home overnight.
  • 5 kW continuous power output. 
  • Backup power during outages.
  • Sleek wall-mounted design.
  • App-controlled smart energy management. 

Powerwall+: Energy Storage Meets Solar Intelligence

The Powerwall+ is built on the foundation of Powerwall 2 and adds a major upgrade: an integrated solar inverter. 

Why It’s Smarter: 

  • Same 13.5 kWh battery capacity.
  • Higher peak power output (up to 7.6 kW) 
  • Integrated solar inverter with 4 MPPTs (Maximum Power Point Trackers)
  • Optimized for real-time solar generation and storage.

Powerwall 3

Powerwall 3: The Energy Upgrade Your Home’s Been Waiting For

Announced in late 2023 and rolling out through 2024, Powerwall 3 is Tesla’s most powerful home battery yet. It’s designed to meet modern energy needs, including higher loads, faster charging, and seamless integration with large-scale solar systems. 

What’s New: 

  • 11.5 kW of continuous power, which is more than double Powerwall 2 
  • Still offers 13.5 kWh capacity.
  • Integrated solar inverter with expanded capabilities
  • Designed for quicker installation and lower labor cost
  • Ideal for large homes, EV charging, or heavy appliance use 

So, with all these incredible upgrades, making it smarter, more efficient, and future-ready, don’t you think Tesla Powerwall is worth it?  

What else could you ask for? We’re pretty sure this is the battery your home’s been waiting for! 

The Actual Cost of a Tesla Powerwall: Is it Worth It?

Let’s not sugarcoat it, a Tesla Powerwall is a significant investment. As of mid-2025, the Powerwall 3 unit itself costs approximately AUD 11,900, with the essential Backup Gateway 2 adding $1,700. This brings the total hardware cost to approximately $13,600 AUD. 

Installation costs can range from $1,000 to $ 2,500 or more, depending on your location, system complexity, and the installer.  

This puts the total installed cost of a single Powerwall 3 in the ballpark of $14,600 to $16,000 AUD. 

While this might seem steep, it’s crucial to factor in the various incentives and potential savings.

The Australian Government’s Rebates and Incentives in 2025

Good news for Australian homeowners! 2025 is a sweet spot for solar battery rebates, with a significant federal program coming into play: 

  • Federal Cheaper Home Batteries Program (Starts July 1, 2025) 

The Australian Government has announced an upfront discount of approximately 30% on the cost of installing eligible small-scale battery systems (between 5 kWh and 50 kWh).  

For a 13.5 kWh Tesla Powerwall 3, this could translate to a rebate of around $4,725. The discount is based on usable capacity and will gradually decrease until 2030, making 2025 the optimal time to jump in.  

The discount is applied upfront by accredited installers, making it easy for consumers. 

  • State-Based Incentives 

While the NSW Peak Demand Reduction Scheme (PDRS) battery rebate ends on June 30, 2025, it will be replaced by an expanded Virtual Power Plants (VPP) incentive from July 1, 2025, offering a single upfront payment of up to $1,500.  

Other states like Victoria (interest-free battery loan up to $8,800), ACT ($15,000 interest-free loan), and Western Australia (up to $7,500 rebate and loans) continue to offer their own incentives.  

Altogether, these rebates dramatically lower battery costs, often by 30–50%, making the Powerwall 3 far more accessible.  

Top 5 Tesla Powerwall Alternatives Available in Australia

The Australian battery storage market is vibrant and competitive. While Tesla is a dominant player, several other reputable brands also offer excellent alternatives. 

Looking for something beyond Tesla Powerwall?  

Here we’ve listed some of the best battery brands in Australia in 2025: 

  1. LG Energy Solution RESU: Known for their reliability and various capacity options. 
  2. BYD Battery-Box: A popular choice for its modularity and competitive pricing. 
  3. Sungrow: Offers a range of battery solutions, often paired with their inverters. 
  4. Enphase Encharge: A good option for microinverter-based solar systems, offering modularity and resilience. 
  5. Alpha ESS: Alpha ESS battery provides integrated solar and battery solutions. 

Parting Thoughts

Tesla’s Powerwall ecosystem offers energy resilience, grid independence, and smart control. With the release of Powerwall 3, Tesla is responding to the growing demand for higher capacity, smarter tech, and easier installs. 

In Australia, the home battery market is gaining traction, with data showing that the majority of homeowners are opting for the Tesla Powerwall.  

So, whether you’re going solar for the first time or upgrading your energy system, the Powerwall lineup has top-notch options tailored for your home. 

By the end of 2021, battery installations had increased by 400%, and the majority chose the Tesla Powerwall. With our affordable solar packages, you can make your dream of owning a Tesla Powerwall a reality.   

Still unsure?  

Contact a certified installer, such as Cyanergy, to explore your options tailored to your home, location, and future needs. Get a free quote today and learn more about the Tesla Powerwall battery price, rebate availability, and installation details.

Your Solution Is Just a Click Away

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Is Tesla Powerwall Worth It For Australian Houses In 2025?

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IWTG Consulting Addresses Turbine Failures

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Weather Guard Lightning Tech

IWTG Consulting Addresses Turbine Failures

Jon Zalar, founder of IWTG Consulting, discusses the challenges of wind turbine maintenance, emphasizing the rise in turbine failures and the importance of root cause analysis (RCA). Proactive maintenance, proper documentation, and expert consultation will help to mitigate issues and ensure turbine efficiency.

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 FacebookYouTubeTwitterLinkedin 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!

Welcome to Uptime Spotlight, shining light on Wind. Energy’s brightest innovators. This is the Progress Powering tomorrow.

Allen Hall 2025: Jon, welcome to the program.

Jonathan Zalar: Thanks for having me,

Allen Hall 2025: Jon. Let’s start with the reality facing wind farmer operators today. What’s the core problem when it comes to turbine failures?

Jonathan Zalar: There’s been a larger number than they probably experienced like five years ago. I think, um, you know, the volume of turbines out there and some of the bigger issues that, you know, people are seeing in the last two to three years has made owning a wind farm a little more challenging than before.

Um, you know, between blade issues, bolted joint issues, shoes, and. Overall, like o operations, right? It’s been tougher to keep these turbines up and running, you know, manpower’s an issue, getting people out there to go fix stuff. It’s, [00:01:00] it’s been tough for a lot of people I’ve talked to.

Joel Saxum: Do you think this is a, a partial result of like, um, okay, so what we’re, you know, on the podcast in the last few years, we’ve always been talking about, oh, there’s all kinds of models coming out and there’s this, this manufacturer can put out this many different variations and all these things, and now.

Now we’re getting to the age where that family, that group of turbines that, I guess it’s kind, I’m looking at it like a class, right? That class of, that, those years of turbines are now getting to the stage where they’re out of warranty and they’re coming into, some people are taking, you know, ISPs taking, um, maintenance of them or an owner operator taking maintenance over from the OEM.

And all of a sudden now there’s these issues popping up and different things that we’re, we’re kind of in this. Um, like a swamp of problems with a lot of different models. So, uh, yeah, like you said, we’ve we’re, we talked a little bit off air here about RCAs and how to fix things and looking at serial defects and stuff, but it’s just like, it seems like every other week [00:02:00] someone calls Alan Ryan’s like, Hey, have you heard about this thing with this model?

And it’s like, man,

Jonathan Zalar: another one. I think it’s a combination of two things. One. Like I talked about the last time we had podcasts, there was a, you know, a pretty big push to increase rotor size, come out with new models for, for every, for all the os, right? They’re competing against each other. Coming out with a new model every 18 months.

And you can ask Phil, but I believe mostly the OEMs are sold out. If you go back five, six years, where. A huge expansion in the amount of wind turbines that have been placed. Right. So I think you combine those cheap factors and now, yeah, the owners have a lot on their plate, a lot more than they’re

Allen Hall 2025: probably used to.

And my question all is this, the complexity of the turbines. So every new model that comes out, what I’m seeing is more instrumentation, more sensors, more stuff, more variability, even in where the components originate from.

Jonathan Zalar: Right? Yeah. [00:03:00] I mean, to increase, to be able to meet that increased demand the OEMs had to get, you know, a lot of different suppliers for bearings for, you know, maybe two or three different places to make blades, right?

Um, and you’re right about the complexity, right? So like these rowers are getting bigger. They were trying to keep as many components the same. So you need better sensing, better controls to, you know, keep those loads where they work.

Allen Hall 2025: And a lot of times, uh, when operators have problems, they don’t actually realize.

What to do or realize that maybe there’s a serial defect and how to address it and how to suss that out. Now the, the big question is, is like what’s at stake if the operators don’t implement some sort of proper root cause analysis? Uh, what does that sort of downward spiral look like? Because we have seen operators that do that, that, that don’t try to identify key issues with their turbines.

I

Jonathan Zalar: mean, at the end of the day, it costs money, right? So if the quicker you figure out an [00:04:00] issue and if it’s a solution for an issue, the quicker you’re gonna solve that problem for your site or your fleet. Um. Also like making sure you’re communicating with the OEM about your failures so that they can add them to their RCA if they’re working on one, for example.

The more data they have, it’s gonna help them come up with a more effective solution.

Joel Saxum: I think you’re, you’ve gotta, how to put this? You have to have a specific engineering mindset. So of course we’re dealing with engineers all day long. We’re all engineers. We enjoy the engineering mindset. So it’s easy for us to quantify ROI and value add from an RCA, right?

So, hey, we’re gonna bring in an expert, or we’re gonna bring in a consultant, or whether it’s a, you know, a big one, A DNV, a UL type, or it’s a Jon Zalar, it’s gonna cost us a little bit of money, right? It’s gonna cost us. 5, 10, 20, 30 grand, what, whatever that is. But to us, that ROI is easy to quantify, oh, we had [00:05:00] this issue on this turbine.

We’re gonna spend 20 grand figuring out why, what, how, and how we fix it in the future. Well now we can avoid that blade failure. Next time we can avoid, you know, a de deductible on an insurance case, $250,000. So boom, we, if we save one of those, we paid for the whole RCA. It’s easy for us to do that in that engineering mindset, but to get, sometimes to get.

You know, an asset manager who may not have that engineering mindset, they’re just looking at, um, dollars and cents. They’re like, yeah, do we wanna spend this money? And, and I, I think that that’s a, uh, uh, a mindset, a, an action, an operation that, you know, us as evangelists for engineering in the industry need to help because we can help it in a large scale, right?

Like if we, if we solve these problems through RCAs. Then we can avoid ’em in the future and it’s better LCOE for the entire fleet. That’s the goal,

Jonathan Zalar: right? Like even if you identify an issue and you have the ability to figure out how many [00:06:00] turbines are affected and like we use a Blade Blade issue, right? If you only catch the CAT five, that’s a much more expensive repair than a cat two or three.

So if you work with somebody to identify, hey, this lat or you know, this list of turbines have a better chance of having this problem, let’s inspect it a little more, for example. Or let’s proactively add some strength in one area that we know we’re seeing issues that could save a lot of money in the long run.

’cause blade repairs are expensive. They take time, weather out. It just adds up.

Allen Hall 2025: And what I see when Joel and I have been around a lot of, uh, wind turbines in the Midwest, is that the asset managers. Get a lot of complaints from the neighbors and the landowners. So if they have a blade break or they have some sort of bearing that’s going bad, that’s making a lot of noise.

It’s a constant set of phone calls from the surrounding landowners about this problem. So even in the simple things. That can be [00:07:00] fixed, turn into big problems because of all the associated people that are around it. I mean, Joel, you’ve, you’ve seen some of these cases where, like a bearing’s squeaking, okay.

And the neighbor complains, or a blade breaks and the, and the owner calls up and say, Hey, why is this blade in my front yard? Which has happened? And those are real life situations that, that. You know, re requires somebody with knowledge to catch them before they turn into that neighborhood problem. Yeah.

That’s

Joel Saxum: the intrinsic side of, of the return on investment, right? Like, you can’t measure that, but it’s valuable. And, and I, and we get, this concept comes up a lot to us because we’ve been doing a lot of work in Australia lately, and Australia has a different approach to their neighbors and how they work within things.

And it’s very, very, very hands-on. Where in the states sometimes you see like, oh, well, they’re a non-participating landowner, so we just kinda, you know, move on. And then you see the Facebook posts that are like, these turbines take a thousand gallons of [00:08:00] oil a year and they never run. You know? And if we can, as an industry, if we can avoid those things by getting on top of stuff with RCA, we can, we can get ahead of the game, right?

We can change the perception of, of renewables as we move forward. Um, which is, I mean, it’s a difficult battle, but that’s, as engineers, we can, we can help that fight. So I think that this is an important thing. That’s why we’re talking to you, Joe.

Jonathan Zalar: Yeah, I agree. I mean the, the video of the guy who was asking why it wasn’t turning, ’cause there was no wind.

I’ll never forget that one.

Allen Hall 2025: So how do we break this cycle of reactive maintenance and repeated failures? What should we be doing?

Jonathan Zalar: Continuing that relationship with the OEM, making sure you’re having those monthly quarterly calls, sharing information back to them and making sure that you’re getting the updated information from them.

Because, you know, all the major OEMs have like information letters they provide when there’s an a known issue and they give recommendations of what to do to fix it. And just making sure that you’re plugged in, especially the smaller owners that you’re plugged into the oem, just make sure you get that [00:09:00] information.

You know, some could be a parameter setting or a increase inspection or, or a safety concern as well. Just keeping that relationship I think is important.

Joel Saxum: So, Jon, so continue on that, that thread at what, at what point does. Because not everybody is able to keep that relationship really good. And sometimes OEMs don’t wanna share a little bit, at what point does an operator say, I’m taking on an RCA myself.

I’m going to get a consultant in here. Or we’re gonna take it on in our internal team. what, how do you make that call?

Jonathan Zalar: It’s looking at their relationship and if it’s not there, and that does happen. There’s breakups in the industry, if you will, and. You see three or four of the same failures at a, 50 wind turbine park.

it should be a little bit of a yellow flag. I wouldn’t say red yet, but one turbine fell over. That’s a red flag, and that’s when if you’re not getting what you need and you don’t know what to do about it, that’s when you call somebody else out because. [00:10:00] The next one’s gonna be just as expensive, and there could have been a way to make it either cheaper or not happen.

Allen Hall 2025: let’s, get down to specifics now, because I think a lot of problems in the United States are related to bolts at the minute, and I, this may be a worldwide problem, that there seems to be blade bolts and pitch bearing bolts that are. Have cracked or are failing in some unique ways. And I’ve seen more recently where operators are just replacing them.

Like they, they don’t think about it in a larger context of maybe there’s a problem here. Maybe I need to be flagging these things. And they don’t bring in an expert like you, Jon, to come in and do an RCA To suss this out, you want, can you give us just a little bit of background on what’s happening on the, blade bolt and pitch bearing bolt problem?

Jonathan Zalar: It is multiple OEMs are having. I think three or four different failure modes that I’ve heard so far between root inserts, just the bullet joint itself, and then potentially just some initial torquing issues. Um, I know from my experience there have [00:11:00] been update updates to the bold, the bolt torque.

Specifications. And back to my comment about the relationships, like if you’re not getting that information, then you might not know. You should have went back and retort all these bolts and now you have a couple fail. Fail. Right? And then also what you do about it, when you have one that comes out, do you replace just the one or do you replace four to the left and four to the right?

So d different solutions I have seen from different OEMs about what to do when you do have one particular bolt fail. Um, you know, there’s definitely some potential supplier concerns. ’cause like I said, there’s been so many turbines with so many bolts, like you’re gonna have some manufacturing issues. You can’t get over that With the volume of bolts that are out there.

Joel Saxum: Do you think the technology innovations in bolting and tensioning tools right now are gonna help or hinder. Bolting problem.

Jonathan Zalar: I think they’re gonna help. Um, you know, [00:12:00]torquing, big bolts have been a problem in multiple industries. Even when I worked in locomotives, you know, getting high torque to come out with the right size tool to be able to get in there, to go, to go put the locomotive back on the frame.

Right. It is a very hard job. And you had mean you looking at 92 bolts on one axis, then you got tower bolts. I mean, it’s a very, very boring job, I’m assuming for the people that have to do that. All the time and having tools that make it easier, have a, have a less chance of not hitting that torque value, setting something wrong, not putting the tool in properly at an angle, for example.

I, I think the more, at least what I’ve been seeing recently, the more money and effort people are putting into, like making bolted joints. Is gonna be worth it.

Joel Saxum: Well, and I think this is why, like this is the importance of an RCA, right? Because at that level of, say, new construction or repowers, people are just pointing fingers like, oh, the technicians did this wrong, or whatever, blah, blah, blah, blah.

Or you get an RCA specialist to come in and can do, you know, the [00:13:00]eight eight DRCA or if they throw an RCA and figure this thing out properly and be able to point to, well, actually there’s a. A metallurgical defect in these bolts and you know, it’s a supplier issue or, or maybe it does the RC may point, Hey, these guys were at the bar the night before they torked this one or something.

You

Jonathan Zalar: know? Or, or could be like crew a just happens to not pay attention or, or had or had the wrong information. They had the old bolted joint, this tribal knowledge.

Joel Saxum: Exactly. And speaking about the problem there, like if we’re down the line, say now out of warranty, and we’re looking at a bolted connection issue.

It may point to once you’ve stretched those bolts a certain amount, if you’re re torquing or changing torque specs or something along the way that’s done, like that’s cash, like that doesn’t, it doesn’t work like that called yield.

Jonathan Zalar: Yes.

Allen Hall 2025: Well, especially composites though, when you start talking about these bushings that are in the blades.

You pull them, they’re, they don’t recover. They just get damaged. It’s not like some metal and it can stretch. You don’t really stretch [00:14:00] composites. You break composites.

Jonathan Zalar: Right. Once it loose is once it’s loose, it is adherence, it’s done right. You have to go do something, get it back. And I know there’s some technologies out there trying to fix some of these inserts, but yeah, like once you do that damage.

It doesn’t heal itself.

Allen Hall 2025: Right. And I think there’s a lot of misunderstanding about that right now in the field because it, they’re not talking to engineers. They feel like, well, we’ll just cinch it back up and it’ll be okay. No, that joint is done. It’s done. You need to have somebody come in and look at it and give you some really good advice.

Joel Saxum: So to get to that level, Jon, you need to go through an investigation process. Can you give us some of the like, tips and tricks for the investigation process that like, that you know of, that you, that have helped you in the past? Data quality is very important,

Jonathan Zalar: like making sure, you know, like what turbine, which bolts, how many bolts, when did it happen, when were they last touched?

Like documentation is not always the best in the field. There’s a lot of handwritten stuff I [00:15:00] know that, you know. Companies are getting much better with electronic documentation, but that didn’t always exist in the beginning, like four or five years ago, surprisingly. Um, and then also like having the expectations where an RCA doesn’t take a month.

If someone, if someone calls you up and says, I need an RCA in a month, they don’t want RCA, that’s it. They’re not that fast. You really need to look at what’s going on, collect the data, put a hypothesis together, and. Validate or invalidate it and repeat if needed. And then you have corrective action. And that takes time.

That takes a commitment from the customer as well as you know, whoever they’re working with.

Allen Hall 2025: And that corrective action is the real key. But it’s hard to get to the corrective action if you don’t know what the root cause is. I see a lot of corrective actioning happening out in the field. Like they assume they know what’s happened, but not the details.

And you’re right, Jon, it’s gonna take more than a couple of days. To suss this out because there’s too [00:16:00] many variables and there’s not a lot of information, particularly when you show up on site. A lot of operators haven’t kept the real detailed records that you would need to be able to point it in in an afternoon.

Like, yes, this is it. Right?

Jonathan Zalar: Unless it’s a known issue that you’re not aware of and somebody else tells you, oh, yeah. G has his tail go do this, whatever this is. Right.

Allen Hall 2025: And how does that play out between the different OEMs at the minute? Are they basically providing the same level of information about, uh, known problems?

I have very little experience with like, um, I don’t know. Intercon for example, I haven’t seen a lot of Intercon service bulletins. I’ve seen Seaga Mesas and GEs Iveta. They’re pretty on top of it, but there’s other turbines that are out there, Solan. Well, how does that work?

Jonathan Zalar: That’s a very good question.

’cause I’m not seeing very many from Intercon or Solan either. And I believe they have some bigger companies that are responsible for them now. Um, [00:17:00] it’d be interesting to see. What kind of level that a turbine, that old without, you know, their OEM’s gone. Right. Someone else bought ’em out at some point.

Allen Hall 2025: Well, it’s like the Mitsubishi 1000 A’s, which is a really good example because a lot of the Mitsubishi 1000 A’s, and there are a number of them still in the states are, are being repowered at the minute.

So they’re gonna have another 20 years of lifetime. But I, you know, Mitsubishi probably doesn’t really provide a lot of service on those. What do you do? If you have an issue on a Mitsubishi or an old Suland machine or even an old GAA machine, where are you going to get help? I

Jonathan Zalar: mean, you, you really need to go to like an independent engineer that has that kind of experience, you know, hopefully with that particular turbine model.

But if not, you know, people who do follow known RCA processes, we will be able to like work through issues like that.

Allen Hall 2025: Is there a network of RCA people in the industry? I know you. Because you’re the [00:18:00] best. So, I mean, I’m talking to you all the time, Jon. I’ve seen this problem of the turbine tell me what’s going on.

But is there a, a general network of people that are just out there focused on solving these problems?

Jonathan Zalar: I don’t think the market’s huge in that right now. I mean, yes, there’s some independent people like myself, and then you have your DNB Leidos, those type of companies that that will do RCAs. But I don’t think they have dedicated RCA teams.

I think. The OEMs are the ones with the dedicated OEMs and then a handful of people like me.

Allen Hall 2025: So let’s, let’s walk through that for a minute, because one of the questions that pops up when someone’s trying to solve a problem is like, why not bring in a big organization like the one you just mentioned to, to do the RCA?

Like we, we, we’ve hired, uh, the three letter acronym to come in and do the RCR, the two letter acronym to come in and do the RCA. There’s a downside to that. I think I, I’m not always sure that the, the competency is there based [00:19:00] upon the, just what I see for the level of person that’s been assigned to that.

When they have so many RCAs and requests coming into the door, can they. Manage it at a level that you as the customer would be happy with.

Jonathan Zalar: I don’t deal with it too much, but you’re right, it, it will depend on the person you get Right. When you’re using one of the bigger one. Right. And you know, I’m sure some customers have the opposite, like, oh, I got the best guide or girl I could get for this.

Right.

Allen Hall 2025: Have you seen the varying in quality there, Joel? Like if you just call out the big name and pick up the phone and call the name. You don’t always know what you’re getting

Joel Saxum: there. We know, we know some really good people in the industry that has specific problems, but the trouble is, is scaling engineering expertise is tough.

Right. So like if you have a, you have a Jon Zalar on the phone, you get an awesome engineer that knows how to do RCAs, but you only get Jon Zalar, right? You, you, you can’t expand that. A million things like Jon Zalar can’t take out 58 RCAs this week because he’s Jon Zalar. Whereas, whereas I think that some of the [00:20:00] bigger houses, you get the strength of having a, uh, the larger team behind some of them where they can kind of spread some work out.

Or you may have an expert in fracture mechanics that he can look at this and somewhat so you have that with the larger teams, which I think is an advantage and you get some varying opinions in the room and you can really sort down to certain things. But at the end of the day it, it, it’s exactly that.

It’s an engineering expertise shortage

Jonathan Zalar: off. You know, it’s also nice when they have a good network. Of people that they’ve worked with in the past to bounce ideas off of. Because like if you’re the only one doing RCA all on your own, you’re gonna second guess yourself a lot. But like having somebody who does have.

A lot of contacts and colleagues in the industry. I think that’s very helpful.

Allen Hall 2025: Well, a new avenue for root cause analysis is looking at the service providers. I’ve noticed that, uh, you know, it’s one thing if a product comes to an OEM, you, you kind of know what you’re dealing with there. But when a company’s out there, uh, independent service provider or maybe some out there on a contract is [00:21:00] doing work on your turbine.

Now RCAs are looking into those service providers. Jon, are you involved with some of those discussions?

Jonathan Zalar: It’s, you know, not just the service provider, it’s even like who’s doing the work. Are they actually doing what they say they’re doing? Um, are they following the OEMs maintenance schedule correctly? Um, you know, especially some of the owners that farm out the whole operations to somebody else.

Double checking their work, I think is important just to make sure, I mean, you, even if you have total control and people, but just having a second set of eyes doing some quality checks. I, I, I don’t think that enough of that’s being done in the industry at this point. I think there’s opportunity to get

Joel Saxum: better.

The bird dog concept, right? The bird like oil and gas is bird dogs everywhere in the onshore, offshore. Anything you do, they gotta, they got a client rep who is rolling around making [00:22:00] sure things are done right. And I think we need that in wind too. And it’s not any different if you look at the same thing.

Remote operations people are like, oh, wind farms are all over the place. Like, have you looked at any other In industry, it’s the same thing.

Jonathan Zalar: It it, it’s harder. There’s more of them and they don’t move, like, you know, like a locomotive or automobile, right. Where they come to the shop and you can overlook, see what somebody did.

But yeah, like spending that money and effort on. Quality, I think could go a long way. And one of the ways would be the bird dog method that you suggested.

Allen Hall 2025: Yeah, I do think some of the issues we’re seeing in the field are related to particular groups that have touched the turbines, and maybe they just don’t have the latest and greatest information from the OE em, or maybe they’re just winging it, but either case, uh, the sampling there needs to happen and it really gets down to knowing what’s happening with your turbine.

And then when it doesn’t seem right. Getting an expert on site to take a look and make sure that your turbine is operating like you think it should and [00:23:00]it should be producing like it should, because if anything, we know right now production is key. We need those turbines up and running. Jon, you know, a lot of people call us and ask us, how do I get ahold of Za LR?

Do you have an email for Jon? How do people get ahold of you? I send ’em to your website, i wtg consulting.com. But they, you know, they want your mobile number, which I try to avoid giving them, but how do they, how do they reach you?

Jonathan Zalar: Um, the website, it’s got a form there. Um, they can also email me at Jay zr@iwtgconsulting.com.

Allen Hall 2025: Well, you can see Jon on LinkedIn. It has a lot of good posts on LinkedIn and you’ll see him. Around the country and the world at different symposiums and discussions about wind turbine operations. Uh, and you can always feel free to talk to Jon Jon’s easy to talk to. So Jon, so thank you so much for being on the podcast.

We love having you. Thanks for having me, guys. I appreciate it. It was [00:24:00] fun.

https://weatherguardwind.com/iwtg-consulting-failures/

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The Lightning Diverter Problem with GE Vernova Blades

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Weather Guard Lightning Tech

The Lightning Diverter Problem with GE Vernova Blades

A design that causes massive problems

As wind turbine operators continue to expand their fleets worldwide with larger turbines, bigger generators, and longer blades, the risk of significant lightning damage continues to plague the industry. Lightning is now the leading cause of unplanned turbine downtime for many operators. In years past, OEM warranties or insurance would cover the costs of repairs and business interruption. Those days are gone. OEMs have eliminated lightning damage from warranties and insurance companies are dramatically raising rates, or eliminating coverage, for lightning damage. That leaves operators exposed to millions in repair bills every year.

The SafeReceptor ILPS System

The basic lightning protection systems for LM Wind Power blades has been two small, coin-sized receptors placed on either side of the blade tip. Designated as the SafeReceptor ILPS, the receptors are connected to an insulated metal cable that runs through the center of the blade which connects to the hub, nacelle, tower and eventually earth. Certified to IEC61400-24, the SafeReceptor ILPS has been used on most onshore LM Wind Power blades since 2011.

LM Wind Power would, occasionally, place a special, additional lightning protection feature onto their blades. Patented in 2005, this lightning add-on contained a line of stainless steel cross-shaped buttons in a soft, gray-colored sealant which formed a segmented lightning diverter. As lightning approached a blade, the LM segmented lightning diverter helped guide the lightning to the receptor, lowering the chance of lightning damage to the blade.

LM Wind Power, and eventually TPI Composites, used the LM Wind Power segmented lightning diverter. Most installations of the LM segmented lightning diverter placed the device behind the receptor – using the receptor to block rain and airflow impact. The reason? If the LM Wind Power diverter was directly exposed to the wind and rain it would eventually degrade.

Remarkably, the LM diverter strip was used sparingly, or not at all, on the LM/TPI 56.9m and 62.2m blades. As it turns out, the 56.9m / 62.2m are unusually vulnerable to lightning damage. In a WGLT study of over 900 GE Vernova onshore turbines in Texas and Oklahoma with blades exceeding 50m, the rate of lightning damage was approximately 1 in 5 strikes. The industry standard for lightning damage is roughly 1 in 50 strikes per the IEC standard. That results highlight a gigantic risk for wind turbine operators.

Presumably in response to these high damage rates, GE Vernova has introduced LPS “improvements” to the 56.9m and 62.2m blades. Two additional receptors have been added to the blade approximately 3m from the blade tip. Also, LM Wind Power diverter strips have been added to every receptor; with short pieces behind the tip receptors plus long pieces behind and in front of the two receptors down the blade.

The Lightning Diverter Problem with GE Vernova Blades
Latest GE Vernova 62.2m Blade Design

This is a risky decision by the blade designers at GE Vernova. Most lightning strikes occur when blades are pointed upwards towards the sky – and segmented lightning diverters provide maximum protection when they are also pointed towards the sky. GE Vernova placed the LM Wind Power diverters parallel with the airflow over the blade – perpendicular to the sky – which dramatically lowers their lightning protection ability.

The Lightning Diverter Problem with GE Vernova Blades
LM Wind Power Lightning Diverter Installation

Why are the LM Wind Power diverters not oriented upwards towards the storm clouds? Our research indicates that exposing the broad side of the diverter to rain erosion causes the part to fail.

Several years ago, Weather Guard Lightning Tech developed an accelerated rain erosion test rig to mimic rain erosion that appears on aircraft nose radomes and wind turbine blade tips. This test sprays water droplets onto test samples at 135 m/s (300 mph) and has yielded accurate predictions for lifetimes. WGLT examined the durability of the LM Wind Power diverters in our accelerated rain erosion test rig. The results were astonishing. The LM Wind Power diverter failed in under 1 minute for every orientation.

The Lightning Diverter Problem with GE Vernova Blades

And here are the images of the test articles after rain erosion testing.

The Lightning Diverter Problem with GE Vernova Blades

Sample 2 Post-Test 90 Degrees to Face of Diverter

The Lightning Diverter Problem with GE Vernova Blades

Sample 5 Post-Test 0 Degrees to Side

The Lightning Diverter Problem with GE Vernova Blades

Sample 6 Post-Test 0 Degrees to Leading Edge

Now, what does this mean for the lightning protection for your GE Vernova wind turbine blades with LM Wind Power diverters? You need to monitor the diverters for damage and peeling off the blade. Missing metal segments from a diverter or sections of diverter that have separated from the blade need to repaired or replaced.

The Lightning Diverter Problem with GE Vernova Blades

What’s the risk? Your blades are susceptible to significant lightning damage which could cost you $$$.

For more information about StrikeTape lightning protection technology and installation services, contact Weather Guard Wind at 1.413.217.1139 or info@wglightning.com.

About Weather Guard Wind: Weather Guard Wind specializes in advanced lightning protection solutions for wind energy applications, with installations protecting turbines worldwide in the most challenging lightning environments.

https://weatherguardwind.com/the-lightning-diverter-problem-with-ge-vernova-blades/

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