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East Coast Offshore Wind Procurement Strategy, Dan-Bunkering Addresses U.S. Refueling Issues, Massive Employee Cuts at LM Wind Power

A collaborative approach is being taken by Connecticut, Rhode Island, and Massachusetts to procure offshore wind projects in the region. Dan-Bunkering is providing a solution to challenges posed by the Jones Act. And GE Vernova is cutting tons of employees at LM Wind Power.

Sign up now for Uptime Tech News, our weekly email update on all things wind technology. This episode is sponsored by Weather Guard Lightning Tech. Learn more about Weather Guard’s StrikeTape Wind Turbine LPS retrofit. Follow the show on Facebook, YouTube, Twitter, Linkedin and visit Weather Guard on the web. And subscribe to Rosemary Barnes’ YouTube channel here. Have a question we can answer on the show? Email us!

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Allen Hall: All right, Joel, I have instructions from above that I am to mention the Uptime Tech News newsletter. So I am mentioning it right now. If you have not subscribed to Uptime Tech News it contains all the stories and all the research that we’ve done and we’re talking about on the podcast. If you wanna read more in depth about those stories, we’re gonna give you all those links and details there.

Plus we include all the weekly stock updates and the whole thing is free. So if you go to weatherguardwind.com and subscribe there, or you can click the link in the show notes, you can belong to Uptime Tech News, our wonderful newsletter. Joel, now my conscience is clear.

Joel: You can sleep well tonight knowing that you did your part to spread the uptime tickets.

So here’s the other thing too, guys, is if you subscribe to that newsletter, when you get into it, all of the companies that we mentioned, Hey, what about this new solution here? These guys are doing this thing. That’s cool. Are these ladies over here designing this or blah, blah, blah. Like all of those companies.

Are hyperlinked right in there. So you can go find them real quick. If you want to research basically what we’re talking about.

Allen Hall: Because it does give you a focus for the week on what to be looking at, what’s moving, what’s trending without you having to go search the internet. And I am a recipient of other newsletters.

I get it. We created our own because there was just, there was a lot of fluff and a lot of these newsletters and things that didn’t matter to us as a business and to, I think the larger industry. Particularly in North America. And so we felt Hey, let’s just do it ourselves. Let’s just make it free.

And we’re doing the work anyway. So we’ll just open up to all our listeners for free. So go to weatherguardwind. com sign up for Uptime Tech News. Click in the show notes below, sign up for that thing. And that will make everybody on my team very happy.

Up along the East coast, there has been four developers submitting bids for a total of a little over six gigawatts of offshore wind. Along the sort of Connecticut, Massachusetts, Rhode Island, offshore area. The bidders were Avangrid Ørsted, South Coast Wind Energy, and Vineyard Offshore. Back in late last year Connecticut, Rhode Island, and Massachusetts had signed a MOU to collaborate together on offshore wind procurement, because they were all doing it separately and competing against one another, and they all had slightly different wording and contracts, and it made all the bidders confused and upset about it.

So they decided to combine them. Finally, the Massachusetts is looking for about 3. 6 gigawatts, Rhode Island about 1. 2, and Connecticut is headed for about 2 gigawatts. So Massachusetts received bids from Avangrid, South Coast Wind Energy, and Vineyard Offshore. And the final decisions on project will be decided in August, which seems like an eternity, everybody.

Rhode Island will evaluate proposals from all four bidders with a decision expected in about three months. Makes a little more sense. And then Avangrid submitted multiple proposals for the 800 megawatt New England Wind 1, which was formerly, everybody keep track now, Park City Wind. And they also proposed about one gigawatt for New England Wind 2, which Uh, this is so confusing, everybody.

There has been just a lot going on the East Coast at the minute, and they’re trying to get projects up and running. I assume before November, Phil, is that what this is all about? Having something due, project evaluations due in August, give some little breathing room before the November elections.

It looks like a lot of projects are trying to happen before election time.

Philip Totaro: Yes and no. It’s not just an election thing, although the politicians certainly want things to happen before elections so that they can use it to campaign off of. The developers want things to happen now because of the potential interest rate reductions that are going to necessarily lower capital costs on projects, which are also going to lower PPA prices.

So now that we’ve gone through all the malaise of last, late last year and early this year on, project power offtake renegotiations and things like that in New York, New Jersey, et cetera Massachusetts. This is the first kind of major tender round after all that and unfortunately they didn’t get the full 6. 8 gigawatts that they asked for in terms of bids, but what they did get I think most of it’s likely to get approved and again, the developers want this to happen as quickly as possible before interest rates are reduced so that they can lock in a higher PPA than what they will get in a year from now or 18 months from now.

Joel Saxum: What you’re saying there, what you’re suggesting, your thought process is that as we were developing these last couple of offshore wind farms that just happened with soft forks going in and all this other. kerfuffle we had with Orsted and all this stuff last year. So what you’re thinking now is that we’re on the backslide of that.

So instead of them fighting up water against these rising interest rates and harder to get capital, you’re like no. Now we will, we want to lock these things in because we might slide off the back end of it and you can lock it in at a higher price. That’s the, do you think that’s the strategy of a lot of these guys?

Philip Totaro: Absolutely.

Allen Hall: So how does that play out though? Because Massachusetts just. Freaked out about PPAs above 77 a megawatt, and the numbers now are going to be almost double that. How is Massachusetts and Rhode Island, Connecticut going to handle that situation if they just subject it to 77 and they’re going to get probably 130 to 150?

How do they smooth that over?

Philip Totaro: It’s the price they’re going to end up having to take. Similar to what New York just did, I think they’re probably going to say quote us a price, you’re not allowed to increase the price later, but quote us whatever price you’re going to quote us.

And at this point, it’s still like the lowest quote wins. Reverse auction style. That said the idea with this is that there’s also a certain amount of procurement that they have to make even though the, Connecticut, Rhode Island, Massachusetts are together in this kind of consortium, each state still has separate timelines for when they want the capacity to be added and separate procurement process.

They’re what they’re doing is they’re agreeing to pool some of the resources associated with the power procurement. They may decide to pull the the actual transmission as well. They may jointly invest or jointly fund the some of the transmission and power offtake. The other thing that this MOU does for these three states is gives them the opportunity to take any excess capacity they might have and sell it to New York or New Jersey or anybody else, Maryland, Delaware if they so choose.

It’s just some commercial mechanisms that allow them to to get these projects done. But it’s still up to each state to run their procurement process how they need to.

Joel Saxum: Watching what happened in the last two years with all these auctions and, like bids and all these things for PPA prices on in this offshore wind auctions.

Now you see, Massachusetts, Rhode Island, Connecticut, linking arms. This is, I think it’s great, that they’re getting together and pooling some resources and trying to basically standardize. I was having a conversation with someone today about standardization brings growth, right? When you start standardizing things, it makes it easier for everybody, rather than having all these different entities to deal with and different rules for every And when you’re talking the East Coast, U.

S., Rhode Island is like this, you can drive across it in a half hour. Having a different set of rules for that little area, and a little area of Connecticut, and a little area of Massachusetts, that’s crazy. But so where I’m going with this is they’re getting together to pool kind of their rules, and their, cut down on that back end paperwork, and make things a little bit more streamlined.

In my mind, I have to think somewhere, these offshore developers are having a beer together, thinking about what these prices should be. Now I know that’s illegal. So I’m not saying they’re doing this, but how much, how many problems we had with everybody being, like trying to fight each other and then this happening and canceling projects and all this stuff, like you got to think that the PPA prices that they’re going to come in with on these bids are going to be much.

Higher than they were originally a year or two ago, just to make sure that they’re safe and there’s no rebid this and rebid that and cancel here and all these different fees and stuff because that was just a mess. So I got to think that on the buy side, you see some people getting together, some states getting together to streamline the process.

I got to think that on the sell side, you’re seeing the same thing.

Philip Totaro: To also address Allen’s question to it’s okay, what? Are they, are the states happy with price taking something that might be double what it was before? I guess the reality of that is that they’re, they’re just going to have to.

It’s, keep in mind too, that with the recently rebid projects in New York, the prices were around 115. So it might not be quite as high as 130 to 150, but it could, it’s definitely going to be higher than 77 to 78, which is what they had with some of these cancelled projects before but you’re, again, it’s just, how many times have we said this on the show You have to accommodate inflation, like those 77, 78 were negotiated in 2020, 2021, and, inflation happened since 2021 that resulted in price increases across the board, raw materials, CapEx, et cetera.

Interest rates went up every, the cost of everything went up except the PPAs. This is just, that’s what I said before this is just the new environment that we’re in, and to the point, Joel also made, it’s, let’s lock in a PPA now before interest rates go back down, and we’re back down to 77.

I’m sure the states want to drag things out as much as possible, but then they also want to have stuff done before the election so they can campaign on it, as with everything, they got to make a choice, either you want security and certainty of knowing that the procurement’s done and it’s at a particular price point, et cetera, et cetera, or you’re going to play political games and run the risk of not being able to campaign on job creation and tax revenue and et cetera.

Allen Hall: Inflation rates are not going down though, Phil, I was checking that on that this week because I was trying to project out over the next several months and. We haven’t seen the indicated slowdown of interest rates and trying to get back to something more on the average, we’re still about twice the average at this point, right?

So the, as a developer, you still have to play in the interest rate issue and the inflationary issues. We haven’t seen on the Northeast up here. We haven’t seen a real slowdown and a lot of commodities in terms of price increases. That’s still trickling through. I would imagine, and that’s why I said 130 to 150, because New York was around below that.

Which may be fair, yeah. So it’s going to be somewhere around 130, I think, at the bottom end.

Joel Saxum: You also have some things really interesting happening here, too. Because there’s a lot of firsts. There’s a lot of people that want to have their little stamp on things as well, right? The, was it the mayor of Boston said that they were going to be the first city to ever buy offshore wind in the U.

S.? They’re gonna they were going to sign an agreement as an offtake? The city itself was?

Philip Totaro: That’s right, Joel. But to that point, you’re right. The Federal Reserve has not lowered, going back to January, there was an expectation that by May, They were already going to have reduced the interest rate by almost a full basis point, and that hasn’t even started yet.

Now we’re all in this condition of, okay, what’s the Fed doing, and why are they still, they’re always behind. Any, throughout history, any time the Fed’s had an opportunity to reduce interest rates, they always do it slower than expected. They always also raise interest rates, slower than expected when they need to.

But the reality of it is that, yeah, in inflation shouldn’t still be a problem. And so interest rates should be able to come down, but they’re, they remain stagnant at a higher plateau at the moment. But the ex, the long-term expectation for everybody is that they’re gonna come down at some point.

Allen Hall: Let me ask about the Francis Scott Key Bridge incident collapse. Does that have any effect on offshore wind? Because it seems like there’s a lot of money, time, ships, people being devoted to that project. And I assume that’s going to be take more than a few weeks to clear it even to, and to rebuild that bridge.

A lot of that is big cranes and things that could be used for offshore. Even in ports, does that, plus the access in and out of Baltimore, is there anything there that’s going to slow down some of these offshore projects?

Philip Totaro: I don’t think so. Access in and out of Baltimore, potentially the vessels themselves, I don’t think any of the vessels that they’re using for the cleanup were going to be used in any of the offshore wind projects.

Joel Saxum: The impact on the wind sector from that is roundabout. So it’s less active, like vessels or access to the port or anything like that. But that has the possibility of being the largest marine insurance case of all time. And so people that are deploying capital into the offshore wind insurance space may have to hedge a little bit on their future things.

So there’s possibility that may affect some people.

Philip Totaro: They’re not going to have as much to spend on backstopping offshore wind because they have to spend money on this other catastrophic event.

Joel Saxum: And that’s going to, that has, I was reading a couple articles today actually about that event, possibly raising the rates for marine insurance across the board globally.

It doesn’t matter if you’re hauling plastic, Or if you’re dredging rivers in the Seine in Europe, like it doesn’t matter. It has the possibility of raising everybody’s premiums no matter what. Because it’s such an interconnected thing, right? Like people don’t realize that’s not an insurance company that holds that policy.

There’s probably 50. At least that holds the policies that will cover all that stuff. And then you’re going to have crazy other insurances that’ll have to be bought for it. That’ll be things around the construction and reconstruction. And then what does the future policies look like and all this different stuff.

So there’s, that’s, that will affect the global insurance market for sure.

Allen Hall: Will there also be changes to the requirements for ships? But the power cutting out, there’s a preliminary indication that the power went out, the emergency power went out and they had no steering. Does that then force additional requirements onto the ship owners and ship builders to put in more redundant systems?

Joel Saxum: I think that, I don’t know if this one event will we’ve seen a lot of events like this. Let’s tie back to Offshore Wind. What was the one last year was on Gota 1?

Philip Totaro: Foundation, yeah.

Joel Saxum: Yeah, like this stuff happens it’s been happening for a long time. It is crazy when you think about it, that there’s these massive cargo ships like the one in Baltimore here, thousand feet long, or how many ever hundreds of tons of cargo on it, that there is no automatic.

Stuff on a lot of these there’s, autopilot for tracking GPS track when you’re out in the open ocean. But as far as navigating the channels, like an out of a port, they bring on local pilots to do it and they do it pseudo manually. Whereas if the power goes out on the boat, they can’t control it.

That’s crazy. To be honest with you, it’s scary.

Philip Totaro: And that goes back to standards. So Presumably standards will be evolved and that will drive up compliance cost once those standards are evolved But for any of the jones act compliant vessels that are under fabrication right now in the u. s It’s not going to have an impact on them.

It Won’t necessarily have an impact on offshore wind crane vessels that already exist that are in use in Asia and Europe that might be, dragged over here to help build the projects here, but yeah, in the future, it probably will have a material impact.

Joel Saxum: When you talk about vessel navigation, like the electronics and the software to control a vessel like that are available online for a hundred bucks.

They’re not hard to find. You can you can buy that stuff and get the code off of GitHub. You can do that stuff like that. Like I’ve done it myself for remote control boats. That’s not hard to come by. It’s just, will people enact it? Will they do it? And to be honest with you, the, like that shipping, right?

So the. Dynamic positioning systems to a third level could be easily built for that boat. And it shouldn’t get to the point where one power failure, two power failures can take things down like this. There should be way more redundancies built into that system than there is.

Allen Hall: So I want to keep Phil on offshore and touch on one of his pain points, the Jones Act, because it came up in PES Wind Magazine.

If you haven’t picked up the latest PES wins, go to peswind.com and You can see this article from Dan Bunkering. And if you get to, if you actually get into the articles, actually a lot of good articles in this quarter’s issue of PES Wind, but the Jones Act prevents vessels from going to shore US port without heading to a distant foreign port.

So if you have a foreign vessel you can’t just refuel in Delaware, then go back out and start working again. The Jones Act prevents that. So now they have a refueling problem and Dan Bunkering company does the fuel runs. So it’s offering infield fuel support. So they run vessels out and fuel you up.

So the, you, the big vessel don’t have to go back into shore because the Jones Act would prevent you from doing this. Now, that sounds like a big problem, right? And it’s smart for Dan Bunkering to take this on because it does seem like it is a needed thing. Otherwise ships would be running up to Canada to refuel, I would assume, and reload.

Is this Jones Act and the, all the maneuvering around it, including Dan Bunkering, which is doing a service for sure. Is this ever going to get addressed? Is anybody in Congress or the administration going to try to smooth this out? Or Are we going to have all these services trying to work around the Jones Act?

Joel Saxum: I think the lobby’s too big.

Philip Totaro: Yeah, it’ll get to a point where there, there could be a critical mass, but we’re still not even there yet. Which is crazy to think because, in offshore wind, we have such a huge problem with it. And the bottom line is it costs us money. I’m, I, again, I’m all for Dan Bunkering doing what they’re doing because it’s, you gotta have a workaround for this issue, but it’s the U.

S. government that ends up costing Americans more money by having the Jones Act remain in place because the fact that we don’t get port and harboring fees, we don’t get servicing fees for the vessels that, that dock at a U. S. harbor we, bottom line, we’re losing money.

We’re losing money across the board. Dan Bunkering’s making money because they’re providing the service that they need to and that the vessel operators need them to. But you’ve got two options. Either the vessel operator needs to bring their own fuel with them from Europe or wherever. Or you’ve got to have somebody like Dan Bunkering doing what they’re doing.

And it’s just nonsense. It’s absolute nonsense.

Joel Saxum: To talk about the Dan Bunkering solution though what they are doing is actually really smart operationally, to be honest, because if you can keep that, if you have a jack up or a specialized SOV or, crane ship out there, like that’s a specialized ship, you want to utilize that thing as much as possible and just keeping it, even if you have to just shut down operations for a few hours to refuel it.

That’s way better than that thing having a steam, steam home. And whether this is off coast, the U S or not, whether it’s, it might be in, I don’t know, it might be in German waters, whatever. That’s smart, right? That running that, that, that supplier valve or supplier barge out there to the extent, Allen and I were talking about the software.

I was like, I don’t know why they don’t bring food in Hey, we have the fuel here, but we also have your shift change. We don’t have to run a CTV for that. So now you have fuel people, everything like this, like that’s how I would do. I think that the Dan Bunkering business model is smart.

They’re providing a service. Yes. They’re getting around some regulations. Yes. But operationally it’s making things run smoother for the speed of installing the offshore wind farms that we’re working on at the same thing with oil and gas there there’s some, I’m sure they’re supporting oil and gas as well, right?

Drill ships want to stay on site. They don’t want to move.

Allen Hall: Yeah, someone’s got to bring the open faced rye bread sandwiches out to the workers, at the motopiles.

Joel Saxum: You can get the salmon overboard, but you need the rye bread brought from shore.

Philip Totaro: Just to put a bow on this, I’m not just I am anti Jones Act, but let’s at least modify it in a way that makes sense, which is let’s, yes, protect You know, U. S. merchant mariners, let’s protect U. S. vessel owners, let’s protect, but there’s a way to do that. We can leverage foreign flagged vessels as long as they’re, like, 75 percent crewed by U. S. citizens or U. S. green card holders, okay? There are common sense solutions like that could be implemented, that would still allow us to leverage the infrastructure that’s already been built and paid for around the world, and not cost Americans money.

Stop. Costing Americans money.

Allen Hall: Should I salute there, Bill?

Philip Totaro: I just did my Bill Clinton thumb thing too, didn’t I? I was, I just realized that.

Allen Hall: So if you haven’t checked out PES wind, you can get the latest version or latest edition at PES. Wind. com. There’s a lot of great things in this quarter’s issue.

Check it out. Hey, Uptime listeners. We know how difficult it is to keep track of the wind industry. That’s why we read PES. Wind Magazine. PES Wind doesn’t summarize the noose. It digs into the tough issues. And PES wind is written by the experts. So you can get the in-depth info you need. Check out the wind industry’s leading trade publication PES Wind at peswind.com.

Down in Brazil aeris has announced a termination of an agreement with Siemens Gamesa for the supply of the SG 170 wind blades. Now Aeris has. A production line with no blades on it coming up here shortly. So they’re trying to make adjustments down in Brazil and put some other blades into that production line.

So this is a two fold impact, right? It shows that Siemens Gamesa on the SG 170 is pulling back. Particularly in Brazil on the manufacture of that particular blade. My guess is that’s going to be moved up to Denmark if they’re going to do anything with it. And secondarily, it opens up an opportunity for somebody else with Aeris to grab a production spot they didn’t have last week.

Phil, who’s gonna, who’s gonna take that spot?

Philip Totaro: A couple of points to clarify, maybe and this is all based on, public knowledge, but Siemens Gamesa the contract with Aeris expired because Aeris has produced all the blades they need to for the Siemens SG170s Seems Gamesa doesn’t have sufficient order book to justify that line continuing, so you’re correct to the extent that maybe they, if they have additional orders, either they can rekindle the relationship with Aeris, which would then necessitate, restarting this line, or they produce in Denmark or whatever at a production volume that, that makes sense, but there should be enough demand from the Brazilian market in general to support domestic fabrication, but it’s, there’s still, some issues with project delivery and everything down there that, that preclude that.

The second thing to clarify is that Aeris has many orders for the Vestas V 150. And presumably that’s what that production line will be reallocated towards. So keep in mind that, GE’s pulled back from the Brazilian market. They were originally doing their, acquired Alstom turbines down there.

But that’s done now. They were trying to offer the Cypress turbine, the 4. 8 to 5. 3 158. Down in Brazil, but they didn’t, they weren’t able to get enough order volume to justify keeping going. GE’s even selling, rumored to, I guess rumored to be selling their factory in Bahia to Goldwind at this point.

And then both Goldwind and Nordex are actually using Sonoma, who recently opened a manufacturing facility down in Brazil. Basically what that leaves Aeris to do is to, refocus on the Vestas V 150. At the moment, as well as continue to try and grow their their services business but in terms of Blade production, I think, unless they can get a deal to be like a second supplier or something for Nordex that’s going to be the refocusing on Vestas is going to be where they where they’re at the moment.

Joel Saxum: Phil, I got a question for you. This is because, and I know this is maybe sounds odd, we’re in the wind industry globally looking at everything. I’ve never heard of a SG 170. Where are they installing these at?

Philip Totaro: They were installing a lot of them in Scandinavia and still are. Sweden, Norway Finland.

They’re getting a lot of those. They’ve installed a few of them in Germany. They’ve been bidding them down in Australia and then certainly down in Brazil. I think there were, It was a Statkraft project or something where they were supplying like, close to 90 of these units. There was another project where they were supplying another 60 to 80 or something.

I can’t remember all the projects off the top of my head but the idea being, they’ve been, the bigger you go with a turban the more limitations you have on the number of markets you can serve with that turban. I, it’s, the reason that they can sell them in Australia, Brazil, whatever, is because they’ve got plenty of open spaces where they’re not gonna bother anybody except a few insects.

It’s basically like the same, I guess you could argue the same thing in the Scandinavian countries too. It’s, maybe there’s a few caribou or whatever up there and reindeer that would get pissed off. But beyond that, it’s Those are the markets where you can deploy such a big turbine with 170 meter onshore rotor.

But this, the, so that product was a derivative off of the one that they’re, Siemens is having an issue with. But they’re using the hybrid glass blade. On the 170 and I believe using the same single shot casting process for that, that they had developed for the the six, seven, and eight megawatt 154 offshore turbine originally so that’s where a lot of how that evolved but a lot of the nacelle and the equipment for that was from.

The five megawatt platform where, they’ve been having some of these other blade issues.

Joel Saxum: Okay, that’s a good little bit of information phil. Thank you. So my last question for you about that Because I didn’t know my last question about this one is this anybody in the wind industry that’s specifically in blades You’ve seen blades from Brazil, right?

There’s the Texas blades that are all over the place, Aeris, Sonoma there’s all kinds of manufacturers. We know our friends at Earthwind a bunch of their people are X Factory people. Why is it that you see so many blades? Because, logistically, you would think that makes no sense.

Why are so many built in Brazil? They only, they have a growing, of course, local market there. Naturally, but the rest of the large markets in the world, of course, like the U. S. China, the E. U., there’s not, it’s not that easy to go from Brazil to those places. They’re shipping all of them, of course, but why so many built in Brazil?

Philip Totaro: Particularly, they make their way up to the U. S. because of not only production capacity limitations based on the existing manufacturing footprint, but Keep in mind that, the cost of raw materials and the cost of production is cheaper in Brazil, it’s almost comparable to, not quite as heavily subsidized as China, but it’s almost comparable in cost to China or even Turkey, where both the Brazilian Riai and the Turkish Lira are significantly depressed.

On the currency trade against the U. S. dollar, and so that basically means that you can get a blade for, pick your favorite turban manufactured in the U. S. for, maybe 700, for a blade set, you can have that same blade set manufactured in Brazil for Bye. 550, 000, including transportation up to the port of Houston, for instance.

It just comes down to economics a lot of times. What’s interesting, though, is that the Brazilian government doesn’t quite, they certainly don’t block an export market, but they don’t do anything to help the export market to flourish. Which is a bit curious because they could have a lot more, they could actually take a lot of business away from China or even Turkey and, do a lot more with international, being an international export hub for blades or even other components because of this favorable currency trade at the moment, but it’s, so they do export some but not actually as many as they could.

Joel Saxum: It is always interesting when you see blades coming out of the port of Houston, because no matter where you go, in which direction, east, you’re you’re not going south. East, you’re not going east either, you’re going north or west. Galveston. Oh no. Not a whole lot of turbines being built on the east coast of Texas.

But you’re going north or you’re going west. You’re going out I 10, or you’re going 290, or you’re going 45. And it is crazy to see blades moving out of there because I’ve been in rush hour traffic before in Houston And there’s some of the biggest widest highways in the world where it’s the Katy freeway on I 10 coming into Houston is 24 lanes from side to side that includes this, that’s that’s outside to outside now imagine you’re in traffic That’s bumper to bumper people packed in there and then all of a sudden there’s a frickin 80 meter wind turbine blade You get a good look at it because you’re going real slow right next to it, but it always looks funny in traffic

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Allen Hall: Moving across the water a little bit. GE Vernova plans to cut about a thousand jobs at LM wind power, and this is all internal at the moment that I have seen, but watching LinkedIn today, it seems to be in action. Some higher level people at LM are looking for new positions. So this downsizing is supposed to happen over the next couple of weeks.

No one is sure where it’s focused at, but the people I’ve seen so far have been up in Denmark. Now why, right? Why is this happening now? And what does this indicate for LM going forward? Is it the fact that GE is just going to be cutting down on the number or the variety of turbines, so they need fewer designs for new blades and or they’re going to stop with a lot of new development work for the moment?

Or is this focused on just what the marketplace is telling them Hey, we’re just not going to sell a bunch of wind turbine blades and it’s a manufacturing focused reduction. Which is it, engineering or manufacturing? Or maybe a little bit of both.

Philip Totaro: I get the sense that it’s a little bit of both. And I think it ultimately has to do with comments that their new CEO made back at the Wind Europe event a couple of weeks ago now.

Where he was talking about international competition, which is a bit strange because LM’s got a factory in China. But the, the fact that, you can get cheaper blades made in Brazil and Turkey and China, as we’ve just been talking about it, it has an impact on the amount of business they’re going to be able to do in the core markets like Denmark Spain, and even India.

The Indian wind market is, remains robust, and yet they’re still seeing plenty of competition over there from other fabricators including the Chinese who are either setting up their own domestic supply lines there or importing blades from China. So it’s creating a level of competition that I guess just doesn’t support the amount of overhead that lM’s got at the moment.

Joel Saxum: Yeah, we’ve seen, Allen and I have seen on projects, Chinese made LM blades in the United States. So if people don’t think that happens, we’ve seen them.

Allen Hall: That is also troubling for the offshore blade factory that LM is supposed to build, or is planned to build in New York State. Is that still going to happen?

What happens to the LM facility in North Dakota, or up in Gaspé, Canada? Are those going to be impacted by this or is this a, a more Europe focused effort or more? What is an Indian focused effort? What is happening? Because it does seem like in the United States, GE is selling a number of turbines and they obviously have withdrawn from Brazil and they’ve slowed down a little bit in Europe.

But. Just watching the news releases, GE seems to have plenty of sales, but if they’re cutting a thousand people, are they gonna be able to meet that demand or are they projecting that the demand is just isn’t going to be there over the next couple of years?

Joel Saxum: Like one comment to this whole thing is if you read through the entire press release, what we’re focusing on here, two words, more profitable.

They just want to be more profitable. So I think that these decisions will be made more based on if you cut one person, what’s the ROI on cutting that person or what’s the ROI on cutting this division rather than is there a certain geography or whatever it may be. So I believe that because the ROI a lot of times of cutting someone in the United States is a lot higher than it is of cutting someone out somewhere else.

I don’t think that you’ll see the development that was thought up in New York or if you’re going to cut some people, it might be in North Dakota. That’s my thought.

Allen Hall: Oh, man.

Philip Totaro: Just to also be clear, the, these are two separate issues, particularly because the state of New York was going to provide some support for, in terms of tax relief and other things, for the LM factory in New York.

The, I do not believe the offshore plans are going to be impacted by this. North Dakota may be impacted, and they were planning on doing a new factory in either North Dakota, Colorado, or Texas, and presumably it was going to be in Texas, to be honest based on what I’ve heard but that would basically take advantage of this new 45X manufacturing tax credit through the IRA bill.

I don’t know if that’s probably the thing that might be the most impacted by this. They may not move forward with that new factory in spite of the fact that they would get the tax credits. They’re still spending, 300 million or whatever it is on a brand new, clean sheet of paper factory to, to, expand production lines where they’ve got, GE’s got blades being already made by LM in North Dakota.

They’ve got the same blades being made by TPI in Mexico. And they theoretically have, other international suppliers again, in China whether it’s LM in China or others in China that are manufacturing contract manufacturing these blades for U. S. based GE projects.

Allen Hall: There was a news report, I think late last year, where don’t hold me to this.

I heard it from multiple sources, so maybe do hold me to this. Okay. That LM was losing money, right? That LM lost money and needed G. E. Vernova to pump some money into them to keep them afloat. Not that they would. They’re all one company. Can we just get over this a little bit? It’s just all one thing. If LM is losing money, maybe Vernova’s just saying to them, Hey, you need to clean up your books and get this thing straightened out.

And yeah, we’re not gonna be controlling you. You need to do it internally. And maybe that’s what’s happening. Man that’s chaotic, right? Because, Vernova is, like Phil has pointed out, is in a really unique position that they have other suppliers making the same blade. So LM is competing against TPI.

Let’s just put that out there. Why? I think that’s the question. Why does GE set it up for the competing against themselves and then when their own division is having trouble against the competitor they set up against their slashing jobs at their own site, This whole thing is very circular and maybe the Vernova as a standalone company can now address these things and get everybody pointing in the same direction because it does seem like they’re fighting against themselves.

Because that’s the way the system was constructed.

Joel Saxum: But I think that some of that has to be contractual, right? Because you’re not going to get TPI to build you blades as a spare. They’re going to be like, no, we want this much, we want a line or we want this much capacity. So once you guarantee that third party that then you have to abide by that contract and then you end up hooping yourself, it’s almost like the, it’s the supply and demand of where those blades are.

Again, I go back to Allen. We’ve seen wind farms with. The same blade model, same in quotes, from four different manufacturers in one wind farm.

Philip Totaro: Just, but keep in mind as well that you, you also have the situation where, you know, before GE bought LM, LM was a supplier to a lot more companies, including even LM was supplying blades to Chinese OEMs.

They still do, but it’s to a lesser degree now. And the point is that’s, I think that’s a lot of what happened as well is once GE bought LM, a lot of companies, they might have had existing contracts that similar to what we were talking about before with Aeris and Siemens Gamesa. You let the contract run its course, once that, production line is no longer, able to produce based on order book, you might shut it down, you might reallocate it, or, and if you’re turning off the spigot in orders, then that production line necessarily needs to be retooled or whatever for something else.

And if you don’t have that something else, if you don’t have the sufficient order book, then you have to cut back on the personnel and you’re scrapping some of the tooling or doing, putting some of the tooling into storage or whatever you’re doing. So I guess that’s just the harsh reality.

Allen Hall: I just looked up the cap table for TPI composites. It’s about right now, 130 million. You can buy the whole thing. Seems really low. And why is for Nova not just saying TPI, you’re not part of LM and just get this over with.

Philip Totaro: Either that, or why doesn’t TPI merge with Aeris or somebody?

Allen Hall: Somebody has got to be thinking about it.

I can’t be the only person in the world who’s thought that.

Joel Saxum: I don’t know, Allen, you’re a pretty smart dude.

Allen Hall: I am. And maybe I shouldn’t invest in my own advice because no one else should be investing on my advice. That’s going to do it for this week’s Uptime Wind Energy podcast. Thanks for listening and please give us a five star rating on your podcast platform and subscribe in the show notes below to Uptime Tech News, our weekly newsletter.

And check out Rosemary’s YouTube channel, Engineering with Rosie, and we’ll see you here next week on the Uptime Wind Energy podcast.

https://weatherguardwind.com/dan-bunkering-refueling-employee-cuts-lm/

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Universal HealthCare? Don’t Hold Your Breath

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As the United States continues its slide into corporatocracy and oligarchy, the concept of universal healthcare becomes ever more unlikely.

As the midterms approach, we need to brace ourselves for the onslaught of messaging from the GOP to the effect that Trump is the only force separating America from communism.  This, believe it or not, is a concept warmly embraced by tens of millions of hateful idiots.

The rest of the developed world deems healthcare to be a human right, like potable water.  We counter: Bull****.  Corporate profitability is the supreme right here.  

Universal HealthCare? Don’t Hold Your Breath

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Do Liberals Hate America?

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Yes, the MAGA crowd has a huge appetite for the type of rhetoric we see at left, but their numbers are slowing shrinking.

That said, it’s still amazing that the U.S. is home to tens of millions of idiots who believe that liberals hate our country and are trying to destroy it.

Do Liberals Hate America?

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PowerCurve Recovers India AEP, Silent Edge Cuts Noise

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PowerCurve Recovers India AEP, Silent Edge Cuts Noise

Nicholas Gaudern, CTO at PowerCurve, joins to discuss India AEP gains, DragonScale VGs, and Silent Edge noise reduction.

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 YouTubeLinkedin and visit Weather Guard on the web. And subscribe to Rosemary’s “Engineering with Rosie” YouTube channel here. Have a question we can answer on the show? Email us!

Welcome to Uptime Spotlight, shining light on wind energy’s brightest innovators. This is the progress powering tomorrow

Allen Hall: Nicholas, welcome back to the podcast.

Nicholas Gaudern: Thanks, Allen. Great to be back.

Allen Hall: So there’s a lot going on at Power Curve, and I saw some news online about Power Curve in India.

Nicholas Gaudern: Yes.

Allen Hall: Which is a new development.

Nicholas Gaudern: Yeah, so we’ve been working in India for, for some years now, and we have, uh, more than 100 turbines out there with our equipment on, primarily vortex generators so far.

And what we’re seeing in India is some of the highest AEP gains we’ve ever recorded with our vortex generators And I think a lot of this is being driven by the fact that in certain parts of India, there’s some very unique, uh, environmental conditions, climatic conditions, and there’s parts of the year, like the dry season up in [00:01:00] the north of India, where you’re getting this very sticky dirt accumulating on the blades.

And it’s really quite dramatic when you see the photographs, but that means that the blades are actually starting to, to stall, have flow separation on them.

Allen Hall: I’ve seen pictures of that. Yeah. I was really shocked at the time, uh, ’cause I didn’t know it was just kind of a black, gooey- Yeah … kind of tar-like substance- Yeah, yeah

on the blades, and, uh, it, it was only on there a limited time. As soon as the monsoons come through and the rains hit, it would wash, eventually wash it off. Yes. But while it’s there, you could see the airflow over the blade surfaces. You, you could definitely see separation happening really early on those blades.

Dramatic.

Nicholas Gaudern: Yeah, absolutely, and I think the, um… Like you say, it’s not all year. No. But it doesn’t have to be all year to have a huge impact on, on how many, you know, megawatt hours you’re getting out the other end. So there’s a few months of the year where this problem is particularly severe, maybe sort of December through to February, something like that.

And what we’re finding is that when you see, uh, the power curves for these [00:02:00] turbines, some of them aren’t even hitting rated power. They’re not able to hit rated power because there’s so much flow separation on the blades.

Allen Hall: Wow.

Nicholas Gaudern: And that, I mean, just imagine that. You’ve got a two megawatt turbine, for example.

Maybe it doesn’t cast- get past 1.5 megawatts for this, uh, time of the year. I mean, that’s crazy.

Allen Hall: Does the turbine try to adjust itself when that happens? Because the pictures I s- have seen indicates, like, the turbine is pitching the blades to, ’cause it knows- It can- …

Nicholas Gaudern: what the wind

Allen Hall: speed is- I mean, yeah … and it knows what it should be putting out, and it’s not putting that out.

Nicholas Gaudern: It’s very turbine specific, kind of controller logic specific, but what we see is even the turbines that try to do something, they’re very limited in how much pitch authority they have from the controller. They might be able to just do a little bit, a degree. Okay. Two degrees. You know, very, very small pitch adjustments.

And when you have this kind of dirt on the leading edges, a degree of pitch ain’t gonna save you really. Um- N-

Allen Hall: no. And I think that’s what we’re seeing. And it’s not gonna get that power back. No, no.

Nicholas Gaudern: No.

Allen Hall: But does it add extra load onto the blade structurally over [00:03:00] time when you do that?

Nicholas Gaudern: In terms of the pitching, or-

Allen Hall: Yeah, in terms of the pitching, where you’re trying to be more aggressive on the angle of attack to get the power out of the turbine.

Potentially. And the winds are still pretty strong, you just, the blades are inefficient.

Nicholas Gaudern: I think it’s one of those things where there’s, there’s so many interconnected items with the dirt and the controller and the structure. It’s actually pretty difficult, I think, to say with confidence how much life impact you would have from that.

But what I would say is the more that you might end up trying to pitch, if that’s what’s going on on some machines, that obviously puts wear on the pitch bearings themselves. But yeah, I think at the moment we’re kind of at the beginning of really trying to understand how some of these turbines do deal with this phenomenon.

But what we’re trying to do is get to a point where the turbine doesn’t really have to deal with it. Because if you fix the problem at the source, which is stop the flow separating, then the controller doesn’t really have to, to worry. It doesn’t have to try to, to fix it itself.

Allen Hall: Yeah. That makes a lot more sense.

Just the number of images I’ve seen over the last couple years from India-

Nicholas Gaudern: [00:04:00] Yep …

Allen Hall: you realize how difficult it is to operate a wind turbine there.

Nicholas Gaudern: So even when we, um, have this issue for a few months that we’re resolving with the VGs, we can still be seeing over the whole year more than 5% increases in annual energy production.

Because those months are really important. Um ‘

Allen Hall: Cause that’s when they need the

Nicholas Gaudern: power. Yeah, yeah, yeah. Exactly. For sure. And this is primarily coming from the vortex generators towards the tips of the blades. So that’s where you’re having this, uh, heavy contamination issue, and that’s where all the power would be produced.

So kind of the outer third of a blade is 50, maybe 60% of the power production of a turbine, maybe closer to 50. So that means that if you have a problem out there, it’s, it’s a big problem in terms of your annual energy production. So-

Allen Hall: Right …

Nicholas Gaudern: the VGs are, what they’re doing is they are, they’re injecting energy back into the flow.

Allen Hall: Redirecting the flow, in a

Nicholas Gaudern: sense. So, so basically you have all this contamination on the leading edge. It’s generating more turbulence. The flow isn’t able to retain, uh, remain attached [00:05:00] across the entire chord length. So the VGs are putting energy back into the flow and allowing it to remain attached all the way to, uh, to the trailing edge.

Allen Hall: So even with the blades are dirty-

Nicholas Gaudern: Yes …

Allen Hall: you get that power out- Exactly … put, that you really desire or-

Nicholas Gaudern: Yeah …

Allen Hall: are paying for. Yeah. You, you paid a lot of money for that turbine- Yeah, exactly … you need to get the power out of it.

Nicholas Gaudern: Yeah.

Allen Hall: And-

Nicholas Gaudern: So of course, you know, that suggests that if you had a, a super clean blade, you went and pressure washed it, uh, you would get, uh, an increase in power as well, and that’s true.

You, you- That’s true … you will do. But that’s a one-time thing. Um, so- And

Allen Hall: it’s expensive to do- Yeah … and time-consuming.

Nicholas Gaudern: Exactly. Maybe a few days later, the dirt’s back. So- Sure … you know, it’s not really a sustainable thing for you to be going out washing these blades the whole time. And washing the blades may not be great for the surface of the blade either.

So, you know, a VG is just sat there the whole time. It doesn’t matter if it’s dirt, bugs, erosion, frost, it’ll recover those losses that, that you’re seeing.

Allen Hall: Do the VG installations in a situation like that, [00:06:00] the actual location differ because of the contaminants that are present and the kind of, uh, leading edge effects that you’re seeing?

Do you design it for that environment? Or- Yeah … is every- Oh, you do. So- Yeah, we

Nicholas Gaudern: do. I mean, typ- typically our, our VG arrays are turbine model specific. But in India, we’re finding we’re actually having to be more site specific as well. Oh,

Allen Hall: wow.

Nicholas Gaudern: Because some of this contamination is so severe, we’ve seen that we need to design the VG layout a little bit differently to make sure that we’re giving enough, uh, energy recovery potential when you have these really severe, uh, situations.

Allen Hall: Are you using the AeroVista tool to do that? How do you, how do you quantify the contamination that’s happened on the leading edge at a particular moment or roughly on scale a- and then try to model that? That just seems like a difficult computation.

Nicholas Gaudern: It is. And, um, you know, we’re, we’re getting better all the time.

AeroVista is definitely part of that. So AeroVista’s primary function really is to look at, um- [00:07:00] AEP losses due to structural damages, things like erosion. But actually, erosion behaves very similar to dirt when it comes to, like- It, right … aerodynamic behavior. Yeah. So we can actually use kind of the AeroVista engine to help us understand what is the loss from different levels of contamination.

So we can add contamination levels into AeroVista, as well as, uh, erosion. And we can start to look at, well, what happens if the blade looks like this? What if it looks like this? And then this gets combined with our computational fluid dynamics, our CFD models that we’re running, three-dimensional, two-dimensional.

We sometimes do some aeroelastic modeling as well. So we basically have a big toolbox, and like with any engineering problem, it’s about picking the best tool for the job. So we just go in, and we have all these great tools, and we, we put them together in a workflow that allows us to design the, the best solution for each site that we look at.

Allen Hall: And it’s not India-specific in terms of leading-edge contamination. No. I’ve seen pictures from the US, Brazil, um, [00:08:00] Australia, a number of places where there’s just bugs. Yeah. Right? Those, especially in places where there’s large bugs- Yes. … you kind of get this splatter effect going on. Yeah. And you can have a really contaminated blade surface.

In the US, in the middle of the US, you’ll have grasshopper season, and-

Nicholas Gaudern: Yeah, absolutely …

Allen Hall: tho- those grasshoppers are big, and they splatter. And they leave a disaster. We’ve seen

Nicholas Gaudern: that in, uh, in the Midwest, for sure. Oh, yeah. Some really, really severe contamination from bugs.

Allen Hall: And you, you don’t think about, as an engineer or a site supervisor, that- All right.

This sort of, uh, grasshopper season that happens is affecting my AEP, but 100% it is. And that stuff is gooey, so if you ever drive through the Midwest in the summertime- … you run through, uh, any kind of insect swarm and try to get it off your vehicle. Yeah. It takes some scrubbing.

Nicholas Gaudern: Yeah. It re- it really does.

And imagine when you’ve gotta go up there for, like, 100-meter diameter rotor.

Allen Hall: Right. ‘

Nicholas Gaudern: Cause that’s quite a challenge. So I think, yeah, they have all these challenges, uh, in terms of environmental conditions, and a lot of people consider aerodynamic [00:09:00] behavior blades quite binary. Either the blade is clean or the blade is dir- Or it’s dirty

or it’s dirty. Right. But it’s this entire spectrum. It’s everything in between, and I think that is kind of a little bit of a different way of thinking about the problem. And then it makes the argument around why to put VGs there kind of, uh, easy to, to answer, because the blade is never really truly clean.

Allen Hall: No. I… Unless it’s right after a rainstorm- Yeah … I rarely see clean blades. Okay, so the … If VGs are going on, are you using the DragonScale VGs to solve some of the India problems, some of the contamination problems?

Nicholas Gaudern: So DragonScale’s not in India yet. That’s something that we’re looking at. So we, um, we got all the tooling finished for DragonScale some months ago now, and we’re shipping DragonScale kits.

Uh- Oh, wow. Okay … not, not to India yet, but they are out in, in the field, and we’re gonna be having some more out just in the next couple of weeks, actually, which is quite exciting. We’re doing our first project, um, in Canada.

Allen Hall: Oh.

Nicholas Gaudern: So we’re starting to kinda come across the, the pond with the VGs now, [00:10:00] with the DragonScale VGs.

Allen Hall: So the DragonScales, uh, uh, uh, thank you for bringing a, a sample here today, but the, the DragonScales are really interesting in terms of just the way the airfoil shapes are and how they’re s- kinda stacked and layered- Yeah … and there’s different depths to them, heights to them, to get the flow back where you want it to.

Yeah. And it, I guess it depends on where you are on the blade. If you’re near the root, they’re gonna look something like this. Exactly. Yep. If you’re getting near the tip, they’re

Nicholas Gaudern: much

Allen Hall: smaller- Yeah, we have some smaller ones. Yep … scale, scale of this. So- This then, the Dragon Scales do require a little bit of computational knowledge of what’s going on- Yep

with the blade. And as you say, they- You just can’t willy-nilly stick

Nicholas Gaudern: them on … they’re, they’re quite different. You know, they’re quite different from a standard triangle of VG.

Allen Hall: Right.

Nicholas Gaudern: And, you know, there’s lots of ways that you can create a vortex aerodynamically. And triangles- Sure … create a vortex, sure, but they, they really create one through a process of separation.

Yeah. You have a flow hitting this, this plate that’s angled to the flow. It’s rolling over the top, and it’s tripping into a, into a vortex. But that’s quite a draggy way [00:11:00] of- It is … creating a vortex. Yes. Um, so VGs work. We’ve seen that. You know, we have more than 2,000 turbines now with VGs, so we, we know they work.

Yeah. But Dragon Scale, the whole idea is not that we … This is still a VG. It’s still creating a vortex. Sure. But it’s doing it in a much more efficient manner, so we get the same lift recovery benefits, lift boosting benefits, but at a much lower drag. So we have a better drag ratio. ‘Cause it’s the drag, right?

Allen Hall: It’s the drag. The little triangular-

Nicholas Gaudern: Yeah …

Allen Hall: vortex generators are draggy.

Nicholas Gaudern: So anything you stick on a blade, it, it has a drag. It has a parasitic drag component. Um, they have a huge benefit that outweighs that. That’s why we put them on.

Allen Hall: Yeah.

Nicholas Gaudern: But of course, you can always do better. And I think here we really try to take inspiration from, from lots of the aerodynamic developments we’ve seen over the past decades in aviation and motorsport and, and these other disciplines.

Allen Hall: Right. I always say these look like a Formula One

Nicholas Gaudern: add-on. Yeah, yeah. Exactly. A bigger blade. Or maybe some front slats of a aircraft or some, uh, gas turbine cascading elements- Oh, sure.

Allen Hall: Yeah …

Nicholas Gaudern: these

Allen Hall: kind of things. Yeah.

Nicholas Gaudern: Yeah.

Allen Hall: Gas turbine people would easily recognize this. Yeah, [00:12:00] I

Nicholas Gaudern: think so.

Allen Hall: Uh, so the, the Dragon Scales then in terms of, uh, the location of them on the blade, would it differ than the triangular VGs in terms of generic location?

A, a

Nicholas Gaudern: little bit, but broadly it’s the same because- Okay … you know, ultimately the fundamental physics of what we’re trying to do hasn’t changed.

Allen Hall: Sure.

Nicholas Gaudern: Um, so we’re kind of, we’re addressing the same areas of the blade. But the Dragon Scale gives us a bit more flexibility. We can have these three fin versions that create a very powerful vortex, so we find those down in the root, ’cause that’s where we just want as much lift as possible.

Right.

Allen Hall: Yeah. Right.

Nicholas Gaudern: Uh, but out at the tip we actually have a two fin variant. Oh. Because there we’re, we’re more focused on L over D. We wanna maximize our lift-to-drag ratio.

Allen Hall: Sure.

Nicholas Gaudern: Because that’s where the drag really hurts you, out towards the tip.

Allen Hall: So are they in a strip form then? Yes. Very similar to the triangular VGs?

Nicholas Gaudern: Yeah, exactly. So the, the smaller ones on the strip, just because they’re only, like, five millimeters high.

Allen Hall: Yeah. They wanna

Nicholas Gaudern: see more- So otherwise it’s, it’s kind of watchmaking if they’re individual- … little pieces, uh, going down on the blade. O-

Allen Hall: okay. Yeah. Well, that’s fascinating. All right. Uh, I wanna talk about [00:13:00] Silent Edge before I, I lose you today.

The Silent Edge product has been out in the field- Mm-hmm … and there has been some noise testing done, which I always think is very interesting because I’ve- Yeah … I’ve watched videos from, mostly from DTU, explaining how they do this, where they got the microphones around. And like- Yes … wow, that’s a really complicated test to go pull off.

But you just got through a series of these-

Nicholas Gaudern: We did …

Allen Hall: noise tests with Silent Edge. And you have the results back.

Nicholas Gaudern: We do, yeah. I mean, it was a really exciting, um, test program, and we were partnered together with, uh, Statkraft, who very kindly lent us a few of their wind turbines up in Sweden. Uh, and we are working with the Danish Technical University, DTU Wind, to help with the measurements and actually figure out what’s going out on the turbine.

So this was a project that we were, um, able to secure some funding from, from the Danish, uh, EUDP. So that’s the Energi [00:14:00] Teknologisk Udviklings- og Demonstrationsprogram.

Allen Hall: Right.

Nicholas Gaudern: Yeah. Nothing to do with the EU. It’s a very, it’s a Danish thing. Danish, yeah. But there is EU in the name. Right. Um, so they supported this project with Statkraft and DTU, and what we found is that when we put a Silent Edge on a, uh, it was like a two, two and a half megawatt machine, it had no serrations before.

Okay.

Allen Hall: So we measured- So just a out of the factory blade.

Nicholas Gaudern: Yeah, exactly, and it was in good condition. It had had a recent repair campaign, so the blade was in, in good shape. And then what we did, uh, or what DTU did, is they went out and they measured the noise of this turbine according to the IEC standard.

So there’s an IEC standard on how you should measure noise and what microphones to use and how to post-process it, and then we installed the Silent Edge serrations. And firstly, before we’d even done any measurements, we had people out at site, and they, they live out there. They’re the technicians. They see these- Okay

turbines every day, and they went, “What, what have you, what have you done to, to this turbine?” Because it sounded so different. It sounded much [00:15:00]quieter. The, the quality of the sound was very different, and they just, they just stepped out the car and went, “Wow.” “This is, this is really impressive.” Um-

Allen Hall: So what, give me a description of what the sound is.

I know generally, when you come with a standard blade, it has that kind of shoop, shoop-

Nicholas Gaudern: Yeah, exactly … shoop. It basically just really brings down that perceived loudness of the sound, so it’s just a m- it’s a much quieter sound, and we’re also taking out quite a lot of low frequency component.

Allen Hall: Okay.

Nicholas Gaudern: That’s what- These serrations are really targeting the lower frequencies, so kind of around the kilohertz and, and under.

Allen Hall: Mm.

Nicholas Gaudern: That’s where these things are really starting to bring down the, um, the decibels.

Allen Hall: This- So, okay. So Silent Edge is, uh, sort of a unique design, or is a unique design i- in terms of the- What you see on the typical trailing edge, which are a bunch of triangles or dino tails, right? Yes, dino tails. Yes,

Nicholas Gaudern: yeah.

Allen Hall: Dino tails is, was the generic term for years, and they looked like dino tails, so, so it’s a good description- Yeah … of them. But these more, look more like a cathedral in

Nicholas Gaudern: a sense. Yeah, these, these are quite different though. So we have kind of this iron-shaped, uh, tooth fundamentally, [00:16:00] but we have three different tooth sizes, uh, and they’re asymmetric.

Allen Hall: Mm.

Nicholas Gaudern: And I would love to come here and tell you that we know exactly how this works. Um, but I can’t unfortunately, and, and that’s just how it is sometimes with engineering. We cannot simulate this in the detail required to really understand exactly why each geometric feature does what it does. And if someone claims they can do that, then, then I may be a bit suspicious.

Or, or I’d really like to talk to them, one of the two. Um, but that means that to develop this kind of product successfully, you have to go to the wind tunnel. Okay. Because the simulation is so demanding. So we go to the wind tunnel. We spent a lot of time in the Paul Ricard wind tunnel at DTU, so we can measure aerodynamics and acoustics at the same time And we went with lots of components and 3D prints, and we iterated through design paths, and we came up with this, I think it’s a really wonderful shape we’ve ended up with.

And it was proven out in the field because the final result was we reduced the overall sound [00:17:00] pressure level of the turbine by five decibels. And that is- Whoa … that is huge.

Allen Hall: That’s a lot.

Nicholas Gaudern: So in terms of, like, perceived, uh, loudness of the sound, that’s like a 30% reduction. So this is why the, the technicians who st- stepped out the car heard such a difference, because it’s a massive reduction in, in what the turbine produces.

So

Allen Hall: you’re lowering the decibels coming off the, the trailing edge. Yeah. But also moving around the frequencies so it’s a little less-

Nicholas Gaudern: Yeah, so a lot of that- … uh- That… So the- …

Allen Hall: noticeable

Nicholas Gaudern: also … the five decibels, that’s, that’s this OASP, or we call it overall sound pressure level. This is an integration of all of the reductions we see across the frequency spectrum.

Oh,

Allen Hall: okay.

Nicholas Gaudern: All right. So we’re getting more reduction at lower frequencies. Right. Good. There’s also some high frequencies. But the lower frequencies matter more. So what we do when we’re doing acoustic measurement is we A-weight, we, we weight the, the noise because it relates to how the human ear perceives sound.

Allen Hall: Sure.

Nicholas Gaudern: So it matters more to you, the one [00:18:00] kilohertz frequency than the 20 kilz- kilohertz frequency.

Allen Hall: Yeah. Can’t hear

Nicholas Gaudern: 20 kilohertz. E- exactly. So that’s right at the upper end. So we weight the results, and this is part of the ICE standard, to understand how the human ear perceives the sound.

Allen Hall: Oh, wow. Okay.

Nicholas Gaudern: Um, and this is where we get our, our five decibels

Allen Hall: from.

So this, this was really an iterative process then- Yeah … in the DT laboratory. Yeah. Ooh, wow. I didn’t realize that. Mm-mm. I, I figured you had gotten relatively close by computational methods and then- We- … honed it a little bit …

Nicholas Gaudern: we, we come sort of computate… We do a lot of computation around the angle of the serrations, because the angle of the serration is really critical for, uh, lift generation and loads.

Allen Hall: So when you’re speaking of angle, you’re talking about- E-

Nicholas Gaudern: exactly … this angle back here at the- You can see that angle there. Okay.

Allen Hall: Yeah,

Nicholas Gaudern: yeah. Because you don’t want to put a serration on a turbine and add 20% to the lift of the blade. Right. No. Because-

Allen Hall: That’s not- …

Nicholas Gaudern: lift means loads. Yeah.

Allen Hall: You know? Right. You’re adding load.

Nicholas Gaudern: So you have to be very careful about how you design these products to make sure that you’re not gonna add extra load to the turbine. And, and on the flip side, you also don’t wanna reduce lift significantly, which then [00:19:00] there’ll be less power produced. So it’s a bit of a balancing act, and this is where the computation comes in.

We do a lot of CFD on these to make sure that we’re, we’re handling the loads correctly.

Allen Hall: And how important is the material choice- Yeah … in terms of the noise quieting? Is there a little bit to it about, well, one, durability. Yeah. You, you want to put them on once and leave them forever, so there’s a lot of interactions between the air and these parts that are gonna flex and bend, and you got- I think there’s, you know-

20 years of

Nicholas Gaudern: doing

Allen Hall: that …

Nicholas Gaudern: the, you’ve, you’ve s- you’ve hit the, hit the nail on the head there. The durability is critical. Yeah. It doesn’t matter if you put these products on the blade, and they perform beautifully for six months and then fall off or, or snap or whatever.

Allen Hall: Right.

Nicholas Gaudern: So no, we, we make these products out of the same material as our VGs, and this is a material, uh, it’s an ASA, uh, plastic.

And we’ve had these out in the, in the field for a long time now, so we know- It’s- … this, this is great.

Allen Hall: It’s ex- it’s kind of a flexible material.

Nicholas Gaudern: Yeah, there’s

Allen Hall: a little b- It’s stiff but flexible.

Nicholas Gaudern: Yeah, exactly. There’s a bit of give in there- Yeah … uh, which is important, but it’s very impact-resistant. Uh, it doesn’t really suffer much in terms of [00:20:00] UV aging, which is obviously critical- Oh, wow.

Yeah … when you’re, when you’re- Very critical, yes … out in the field. Yes. So yeah, we’re, um, we’re really happy with the material choice because we know from all our other campaigns with VGs that they last. It doesn’t matter whether it’s sun, rain, ice, snow. These products can survive out in the field for 20 years.

Allen Hall: That’s one of the things I’ve noticed, uh, looking at a lot o- of blade photos with OEM trailing edge serrations. That the little triangles on the back edges break off.

Nicholas Gaudern: Yeah. And I think- There’s

Allen Hall: a lot of them. I was shocked on

Nicholas Gaudern: some sites. One thing you have to be very careful as well is, is lifting and handling as well.

Oh. So, you know, sometimes if these products are installed in the factory, then how do you safely transport that blade and lift that blade?

Allen Hall: You really can’t.

Nicholas Gaudern: So in some ways it’d be better if you put them on at site, but obviously I, I know that’s not always possible. No. So we’re typically acting, um, as, you know, a retrofit.

Mm-hmm. So in that sense we, we minimize a lot of that risk of the, the transport and handling that the OEMs may have to deal with.

Allen Hall: So [00:21:00] what’s next for Power Curve? What’s h- happening this summer?

Nicholas Gaudern: So we’re gonna be really pushing to get Silent Edge and Dragon Scale out in the field more. Yeah. Um, Dragon Scale is, is really exciting, and we’re gonna get our, our first, uh, turbines in different countries equipped with these products.

And Silent Edge, uh, we’re currently putting some of the finishing touches on the, um, the tooling, the injection molding tooling. So the part we have in front of us, this is actually one that we had in the wind tunnel. So this one here is a 3D print. A very nice 3D print. Oh, yeah, it’s- Uh, it’s had vapor smoothing on it, so the surface- It is really smooth

is, is super nice. And you can put these out in the field. So the, the trial with Statkraft was actually with 3D-printed components. If you wanna do a trial for a few months, it’s very possible to do it with 3D prints. Oh. And I, I think they’d actually last way, way longer than that, but, you know, the test was designed to put them on, measure them, take them off again.

Yeah. And that’s what we did.

Allen Hall: Offshore.

Nicholas Gaudern: Mm.

Allen Hall: Uh, uh, w- we’ve had some people write into the podcast talking about offshore wind turbines. And in the States, offshore wind turbines are [00:22:00] usually 10, 15, 20 miles from the shore, but that’s not always the case. Over in Japan and some other areas, the turbines are pretty close to shore.

Nicholas Gaudern: Yeah, def- They’re

Allen Hall: almost-

Nicholas Gaudern: They’re definitely near-shore …

Allen Hall: they’re almost- Yeah. Yeah, yeah … onshore turbines, but because they’re offshore, they get really big, right? So y- you can build a really big offshore turbine. And some of the comments we have received is, “Hey, these turbines are noisy.”

Nicholas Gaudern: Yeah. And, you know, the, the water surface can do some weird things-

Allen Hall: Well, that’s what I wanted to know

acoustically. Okay. Yeah. That’s what I wanted to know- Yeah. Yeah … because if you have trees and hills that kind of block the noise- Yeah … that’s easy. But if you have a turbine and you live on the, essentially the beach- Yep … or real close to the shore- Yeah … that turbine is right there. In some cases in Japan, it’s not very far.

Yeah. You can see it.

Nicholas Gaudern: Particularly on a still day, you know, when you have a very flat water surface, that can mean that sound is able to propagate a little bit further than maybe it otherwise would.

Allen Hall: So is there a, a real need then to pay attention to the acoustics and noise- Yeah … coming off of offshore wind turbines?

Nicholas Gaudern: [00:23:00] I think, uh, c- certainly the near-shore, the things you’re describing now. Yeah. Offshore’s an interesting question because I think often, if I think about the UK and, and Denmark, they are quite offshore, and I think in that, in that sense, the noise is much less of a, a concern. And I think it may be more driven by regulatory r- requirements- Mm-hmm

than actual, you know, neighbor complaints perhaps. So noise is interesting because people put serrations on for different reasons. Yeah. Some put them on because there’s a regulation. Yeah. Uh, some put them on because they want to be shown to being a good neighbor, you know, doing the best they can to reduce noise- We should

Allen Hall: try to-

Nicholas Gaudern: which we should absolutely be doing …

Allen Hall: do that every time we can.

Nicholas Gaudern: And some are doing it because they have curtailment on their turbines.

Allen Hall: Yes.

Nicholas Gaudern: So in order to meet a regulation perhaps, they have to basically turn down the turbine, and it means that it spins slower. And if it spins slower, the noise is lower, sure.

But the power output is also lower. And what we found is that on some turbines that are in noise modes, they’re losing 3, 4, 5% AEP- Ooh. Ouch … [00:24:00]every year because they’re having to turn down the turbine to meet a regulation or to, to satisfy, you know, uh, neighbor relationships. But just imagine what that means for finances if you put a serration on.

You can turn the turbine up again, which you’re now addressing the noise at the source, so you don’t actually have to stop it spinning slower. You’re actually killing the noise where it’s being generated.

Allen Hall: So there’s a big financial incentive- Yes … to look at trailing edge and try to quiet them as much as you can, particularly onshore.

I think that case has- Yeah … been well made over time. I’m always shocked that a lot of operators that, uh, even in the US Midwest, and we s- we drive around quite a bit in the Midwest, there’s a lot of turbines that are near homes.

Nicholas Gaudern: Yeah,

Allen Hall: absolutely. Y- you know, there’s one or two or three homes. This isn’t like there’s a suburb right there, but there are homes out there, and, and they would like to have enjoyment of their property.

Yeah, of course. And if you can knock down the noise a little bit, it would make it

Nicholas Gaudern: a much more pleasant place. Well, if you take, you know, if you take 30-plus percent off the perceived loudness, that’s, you know-

Allen Hall: Oh, that’s very noticeable … that’s gonna, that’s gonna make a difference. Yeah, you’ll get a thank you letter- Yeah

for [00:25:00] sure. So that’s exciting. The- Yeah … all this is exciting. It- It’s

Nicholas Gaudern: gonna be, it’s gonna be a really great summer, I think, to get more of these components out in the field.

Allen Hall: So if, uh, an operator or an asset manager wants to get ahold of Power Curve, understand what Silent Edge is, and how to get it installed or put some dragon scales on this season, how do they do that?

Nicholas Gaudern: So you can check out our website, uh, powercurve.dk. That has all of our contact details on. Uh, you can find me on LinkedIn, uh, as well. I’m often around these, uh- … events that we find- Yeah … uh, in different countries. So no, look, look us up, reach out by email, phone, whatever, and we’d be very happy to talk to you.

Allen Hall: Or reach out to the India office.

Nicholas Gaudern: Yes, that’s something that we’re hoping to have up and running, uh- So

Allen Hall: if you’re

Nicholas Gaudern: in India- …

Allen Hall: later this year. Yeah. Reach out. Yeah, that, that’s gonna be an exciting advancement. Yeah. Great. For

Nicholas Gaudern: sure.

Allen Hall: Nicholas, it’s great to have you on the podcast again.

Nicholas Gaudern: Nice talking to you, [00:26:00] Allen.

PowerCurve Recovers India AEP, Silent Edge Cuts Noise

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