Tagged: wind turbines
On Monday, Contrarian voiced skepticism about a Digby couple’s claim that wind turbines had decimated their their emu flock.
Andy MacCallum, vice president of developments for Natural Forces Technologies Inc., a company that helps develop small wind projects in Nova Scotia, New Brunswick, and British Columbia, responds:
I worked on a wind farm in Western Australia a few years ago called Emu Downs Wind Farm. An emu farmer was the major landowner for the project. The emus loved the turbines, and would gather at the turbine bases as they provided shelter from the wind.
This is, of course, merely an anecdote, just as the failure of the Ocean Breeze Emu Farm is merely an anecdote. By themselves, neither proves anything. But the Emu Downs story presents stronger evidence against the turbines-harm-emus hypothesis, than the Ocean Breeze story presents in its favor.
- If turbines kill emus, then gathering around the Emu Downs turbines should have hurt the Aussie birds, but apparently it did not. The site remains a tourist attraction.
- A thousand factors could have caused the Ocean Breeze emus’ failure to thrive. Owners Debi and David Van Tassell simply picked the explanation they preferred, with no supporting evidence.
Without considering possible alternatives, the CBC swallowed the Van Tassell’s sad story, whole. Not to be outdone, the Halifax Chronicle-Herald committed the same journalistic malpractice a day later.
The impulse to accept at face value any argument against any development, no matter how far fetched or specious, simply because those advancing it are deemed, “sincere,” is a recipe for basing decisions on ignorance, prejudice, and magical beliefs.
Where are the editors?
[Photo: Workers construct the base of a wind turbine going up at Hillside Boularderie, about 30 km from Contrarian’s Kempt Head base station. Courtesy of Natural Forces.]
I see by the CBC that Nova Scotia Power wind turbines have laid waste to a Digby Neck emu farm, decimating a family’s livelihood in the process.
Twenty of Debi and Davey VanTassel’s 27 emus succumbed to the lethal noise produced by NS Power’s murderous machines in the three years since they began slicing the salt air over Digby.
Or maybe it was 30 of their 38 birds—the CBC story gives both sets of figures. In any case, the emus were as hapless as they were flightless, no match for the death-dealing, green-power monsters.
How do we know this?
Because Debi Van Tassel, voice choked with emotion, told the CBC so.
Why, when the birds that provided their livelihood began dropping like cluster flies on a warm window sill, the Van Tassels didn’t even call a veterinarian to examine the corpses. Why bother? They already knew the cause of death.
So certain were Debi and Davey of the emu-killing power of renewable energy, they had protested construction of the wind farm before it even started up.
A vet might not have been much help anyway, given the inconvenient lack of a single peer-reviewed study showing turbine-induced health effects on animals.
Public health researchers in Australia tabulated every known public complaint of human health problems related to wind farms, and found no correlation with the size of a wind farm or complainants’ proximity to them. Well over half of the country’s 41 wind farms generated no complaints; those that did were mostly in areas where protesters promoted health fears before construction began.
The Van Tassel’s putative plight reads like a classic fable. On the one hand, a grieving farm couple, raising charismatic birds from a distant hemisphere, seeking only to wrest a humble livelihood from the windswept Fundy shore. On the other, a corporation so reviled the press exempts it from ordinary standards of fairness and balance, replacing conventional news coverage with one-sided, crowd-pleasing screeds.
“With a vital portion of their income gone,” came the CBC’s maudlin conclusion, “the Van Tassels said they don’t know what’s next for them.”
Absence of evidence and rampant implausibility could not be allowed to interfere with such a stirring yarn. Score one for bunkum over news.
[Disclosure: I count many good friends among NS Power management and staff, and from time to time, I have done work for the company, mainly writing and editing.]
On Sunday, I posted a short iPhone video of an osprey nest next to an 800 kw wind turbine at River John, Nova Scotia, to make the tongue-in-cheek point that someone forgot to tell the osprey about the perils of infrasound and shadow flicker. The point was tongue-in-cheek in the sense that I have no way of knowing whether young birds successfully fledged from the nest, but serious in the sense that I think health arguments against wind turbines are largely spurious.
Bruce Wark, former reporter, CBC radio producer, and King’s journalism professor, thinks I overlooked the most obvious threat wind farms pose for Osprey and other birds:
Here’s an excerpt from a scientific abstract based on a study by K. Shawn Smallwood in the peer-reviewed publication Wildlife Society Bulletin: “I estimated 888,000 bat and 573,000 bird fatalities/year (including 83,000 raptor fatalities) at 51,630 megawatt (MW) of installed wind-energy capacity in the United States in 2012. As wind energy continues to expand, there is urgent need to improve fatality monitoring methods, especially in the implementation of detection trials, which should be more realistically incorporated into routine monitoring.”
These numbers sound shocking. Indeed, I think they are presented in a contextless way* that insures they will shock. But they are actually surprisingly low, especially for birds. He estimates 573,000 bird fatalities for year based on an installed capacity of 51,630 megawatt (MW) If we assume 1 MW/turbine, the average turbine kills about 10 birds a year.
Whenever you hear numbers like this, it’s always useful to ask, “compared to what?”
Compared to what energy sources? The large array of windows on the south side of my passive solar house kills more than 10 birds a year. More to the point, the coal-fired power plants in Nova Scotia that could be displaced by wind power destroy bird habitat, cause deleterious climate change, and release pollutants that must impact mortality among birds with their supercharged respiratory systems. Gas does the same, only less so (or possibly less so, depending on methane leakage during production and transmission). Hydro dams destroy wildlife (including bird) habitat.
Compared to what other causes of human-assisted bird mortality? In a paper published in the journal Nature,** Peter Marra of the Smithsonian Conservation Biology Institute in Washington, D.C., estimates that domestic and feral cats kill between 1.4 billion and 3.7 billion birds per year, along with 6.9 billion to 20.7 billion wild mammals per year in the US alone.
Taking the median of Marra’s ranges, we can say that US cats, feral and domestic, kill about 2.4 billion birds and 12.4 billion birds per year. Marra estimates the US cat population at 114 million, so each cat kills an average 21 birds per year—making a cat twice as lethal as a wind turbine (without even counting the 101 mammals an average
bird cat kills per year).
Wark was kind enough to respond to these points:
In my Coast cover piece on wind, I stayed away from birds and bats because, as you point out, the relative numbers are low especially compared to cats. I concede that point. However, the reason I responded to you is that you were trying to use the osprey nest video to make a questionable point, i.e. that noise and flicker must not be as big a problem as wind turbine opponents claim because an osprey had built its nest near one of them. A more telling point from the opponents’ perspective is that the osprey risks flying into the turning blades as it navigates around the turbines near the nest.
I think where you and I would agree is that we consume too much electricity and that there is no environmentally costless way of producing large amounts of it. People pin their hopes on wind and hydro because they’re supposedly “clean and green” and so, the reasoning goes, if we could only kick our dirty coal habit and use wind and water instead, we’d be able to “save” the planet without having to cut our consumption too much. It’s the same reasoning environmentalists use when they contribute to various “save the planet funds” to offset their addiction to air travel. As I see it, the problems involved in cutting consumption are compounded by the fact that our economy depends on it so we’re caught on a treadmill where household spending fuels growth, jobs and all the other hallmarks of “prosperity.”
I do agree with Wark that there is no costless way of producing large amounts of energy, but the environmental cost of producing it with coal dwarfs the cost of doing so with wind, hydro, solar, nuclear, and probably outstrips that of doing it with gas. If it is true that we face planetary disaster owing to human induced climate change, then it is irresponsible to dwell of what are really NIMBY objections in disguise.
* This comment applies only to the abstract of Smallwood’s paper. Unfortunately, the Wildlife Society Bulletin follows the increasingly common and lamentable practice of putting the full text of its studies behind a paywall. It’s possible that, in the full text, Smallwood contextualizes the numbers that seem so sensational in the abstract.
** The full text of Marra’s paper is likewise behind a paywall.
Our friend the curmudgeon has been quiet for a while, but the spectre of Detroit’s decayed grandeur propelled him to the keyboard:
Move along, Nova Scotians. There’s nothing for you to see in the grotesque collapse of the city of Detroit. Keep your focus on rural development.
Don’t worry about Halifax. It’s wealthy beyond imagination. There’s nothing wrong with its downtown that arresting a few panhandlers won’t fix. Avoid tall buildings; spread out instead. Never mind that only seven of 16 HRM electoral districts are genuinely urban. You can count on the other nine councillors to keep the urban centre healthy and attractive to outsiders from around the world.
It’s far better to resist the global migration to cities, with their greater opportunity and environmental sustainability. Every effort should be made to help country folk maintain their invaluable lifestyles. God forbid their children should leave home to seek their fortunes, knowing they’ll be welcomed back only if they can be judged as failures.
For the genteel squire, let not the scourge of renewable energy destroy their sight-lines, and nay, let not the gypsum for their summer houses come from local mines. Let them fertilize their hobby fields of elephant garlic with wholesome raw animal feces. May they stand firm against the loathsome tide of treated excrement from city dwellers.
Oh, and beware come-from-aways trying to turn derelict buildings into businesses. They know nothing about local ways.
Address your comments to comment[at]contrarian.ca.