
The Uptime Wind Energy Podcast
German Bird Study Finds 99% Avoid Turbines, SunZia Progress
33 min•9 december 2025
Om avsnittet
Allen, Joel, Rosemary, and Yolanda discuss a German study finding 99.8% of birds avoid wind turbines, challenging long-standing collision risk models. They also cover Pattern Energy's SunZia project nearing completion as the Western Hemisphere's largest renewable project, lightning monitoring strategies for large-scale wind farms, and offshore flange alignment technology.
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You are listening to the Uptime Wind Energy Podcast brought to you by build turbines.com. Learn, train, and be a part of the Clean Energy Revolution. Visit build turbines.com today. Now, here's your host. Alan Hall, Joel Saxon, Phil Totaro, and Rosemary Barnes.
Allen Hall: Welcome to the Uptime Wind Energy Podcast. I'm your host Alan Hall in the queen city of Charlotte, North Carolina, where a cold front is just blown through, but we're not nearly as cold as Joel was up in Wisconsin, Joel, you had a bunch of snow, which is really the first big storm of the season.
Joel Saxum: Yeah, the crazy thing here was the Wind Energy Podcast. So since that storm I, we, we got up in northern Wisconsin, 18 inches of snow, and then we drove down on last Saturday after US Thanksgiving through Iowa, there's another 18 inches of snow in Des Moines. I talked to a more than one operator that had icing and snow issues at their wind farms all through the northern Midwest of these states.
So from [00:01:00] North Dakota. All the way down to Nebraska, Northern Missouri, over into Indiana. There was a ton of turbines that were iced up and or snowed in from that storm,
Allen Hall: and Rosemary was in warm Australia with other icing knowledge or de-icing knowledge while the US has been suffering.
Rosemary Barnes: But you know, on the first day of summer here, a couple of days ago, it was minus one here overnight.
So. Um, yeah, it's, uh, unseasonable and then tomorrow it'll be 35.
Allen Hall: The smartest one of us all has been Yolanda, down in Austin, Texas, where it doesn't get cold.
Yolanda Padron: Never. It's so nice. It's raining today and that's about it. Traffic's going crazy.
Joel Saxum: Rain is welcome for us, isn't it though, Yolanda?
Yolanda Padron: It's sweet. It doesn't happen very often, but when it does.
Very rainy for like 24 hours.
Allen Hall: We've been saving a story for a couple of weeks until Rosemary is back and it has to do with birds and a year long study over [00:02:00] in Germany. And as we know, one of the most persistent arguments against wind energy has been the risk to birds and permitting and operation shutdowns have been the norm, uh, based on models and predicted collision risks.
Well. A new study comes, has just come out that says, what if the models are all wrong? And the new German study suggests that they may be wrong. The Federal Association of Offshore Wind Energy, known by its German acronym, BWO Commission Research to examine. Actual collision risk at a coastal wind farm in Northern Germany.
The study was conducted by Biocon Consult, a German research and consulting firm, and funded by eight major offshore wind operators, including Sted, Vattenfall, RWE, and E, roa, and. Rosemary using some of the newer technology. They were able to track bird movements with radar [00:03:00] and AI and stereo vision cameras to, to watch birds move through and around, uh, some of these wind farms.
And it analyzed more than 4 million bird movements and over 18 months, and they searched for collision victims and what they found was pretty striking more than 99.8% of both day migrating and night migrating birds. Avoided the turbines entirely. The study found no correlation between migration intensity and collision rates.
And BD and BWO says The combination of radar and AI based cameras represents a methodological breakthrough. Uh, that can keep turbines moving even when birds are in transit. This is pretty shocking news, honestly, Rosemary, I, I haven't seen a lot of long-term studies about bird movements where they really had a lot of technology involved to, besides binoculars, to, to look at bird movement.
The [00:04:00] 99.8% of the migrating birds are going around The turbines. No, the turbines are there. That's. Really new information.
Rosemary Barnes: I think. I mean, if you never heard anything about wind turbines and birds, I don't think you'd be shocked like that. Birds mostly fly around obstacles. That's probably an intuitive, intuitive answer.
Because we've had it shoved down our throat for decades now. Wind turbines are huge bird killers. It's kind of like, it's been repeated so often that it kind of like sinks in and becomes instinctive, even though, yeah, I do think that, um, it's. Not that, that shocking that an animal with eyes avoids a big obstacle when it's flying.
Um, but it is really good that somebody has actually done more than just trying to look for bird deaths. You know, they've actually gone out, seen what can we find, and then reported that they found mostly nothing. We already knew the real risks for birds, like hundreds or thousands, even millions of times [00:05:00] more, um, deadly to birds are things like.
Cats. Cars, buildings, even power lines kill more birds than, um, wind turbines do. In fact, like when you look at, um, the studies that look at wind, um, bird deaths from wind turbines, most of those are from people driving, like workers driving to site and hitting a bird with their cars. Um, you know, that's attributed to wind energy.
Not a surprise maybe for people that have been following very closely, but good to see the report. Nonetheless.
Joel Saxum: I think it's a win for like the global wind industry, to be honest with you, because like you said, there's, there's no, um, like real studies of this with, that's backed up by metric data with, like I said, like the use stereo cameras.
Radar based AI detection and, and some of those things, like if you talk with some ornithologists for the big OEMs and stuff, they've been dabbling in those things. Like I dabbled in a project without a DTU, uh, a while back and it, but it wasn't large scale done like this. A [00:06:00] particular win this study in the United States is there's been this battle in the United States about what birds and what, you know, raptors or these things are controlled or should have, um, controls over them by the governments for wind installations.
The big one right now is US Fish and Wildlife Service, uh, controls raptors, right? So that's your eagle's, owls, hawks, those kind of things. So they'll map out the nests and you can only go in certain areas, uh, or build in certain areas depending on when their mating seasons are. And they put mild buffers on some of them.
It's pretty crazy. Um, but the one rule in the United States, it's been kind of floated out there, like, we're gonna throw this in your face, wind industry. Is the Federal Migratory Bird Act, which is also how they regulate all like the, the hunting seasons. So it's not, it's the reason that the migratory birds are controlled by the federal government as opposed to state governments is because they cross state lines.
And if we can [00:07:00] prove now via this study that wind farms are not affecting these migratory bird patterns or causing deaths, then it keeps the feds out of our, you know, out of the permitting process for. For birds,
Rosemary Barnes: but I'm not sure this is really gonna change that much in terms of the environmental approvals that you need to do because it's a, you know, a general, a general thing with a general, um, statistical population doesn't look at a specific wind farm with a specific bird and you're still need to go.
You're still going to have to need to look at that every time you're planning an actual wind farm. That's it's fair.
Yolanda Padron: And it's funny sometimes how people choose what they care or don't care about. I know living in a high rise, birds will hit the window like a few a month. And obviously they will pass away from impact and the building's not going anywhere.
Just like a turbine's not going anywhere. And I've never had anybody complain to [00:08:00] me about living and condoning high rises because of how they kill the birds. And I've had people complain to me about wind turbines killing the birds. It's like, well, they're just there.
Joel Saxum: If we're, if we're talking about energy production, the, if everybody remembers the deep water horizon oil spill 2010 in the Gulf of Mexico.
That oil spill killed between 801.2 million birds. Just that one.
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Allen Hall: well in the high desert of Central New Mexico, near a lot of what were ghost towns that were abandoned during the Great Depression.
If there is a flurry of activity pattern, energy sunzi,...
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