On Closer Inspection: Wind turbine asbestos

On Closer Inspection examines claims about clean energy that generate more heat than light.

Over the weekend, The Sunday Times published a story about asbestos found in wind turbines. It's generated considerable heat online — worth a closer look.

First, though: this isn't a new issue globally. It was first identified in Australia in late November 2025, where multiple wind farms confirmed chrysotile in brake pads supplied by Chinese manufacturer 3S Industry, and it's been actively investigated and remediated there ever since. The UK discovery almost certainly comes from that ongoing global audit rather than being an independent finding. The Sunday Times story is new; the problem, and the industry response to it, are not.

The story is real — just not quite the story being told

Chrysotile — white asbestos, banned in the UK since 1999 — has been found in brake components inside the service lifts used by maintenance crews in around 1,000 UK wind turbines. The parts came from third-party Chinese suppliers. No one knew, no one approved it, and a clean-up is now under way. The HSE has confirmed no airborne fibres have been detected and no workers have been harmed.

So far so legitimate. But "packed with white asbestos" — the framing doing the rounds — isn't what the story says. The asbestos is in small, sealed, non-friable (meaning the fibres aren't loose) brake housings inside a locked structure that members of the public never enter. That matters: a brake component inside a service lift isn't the same thing as asbestos in the blades, the nacelle (the housing at the top of the tower), or the structure itself. That conflation is doing a lot of work in the more excitable coverage.

The exposure pathway requires a remarkable sequence of misfortunes

For anyone to be exposed, you'd need: a structural accident severe enough to damage the tower interior; that damage reaching the lift brake housing specifically; the sealed housing breaching; the chrysotile becoming airborne; and fibres dispersing from a rural location to reach anyone in meaningful concentration. None of those steps is impossible — but all of them happening together is remote to the point of theoretical.

And even then: a service lift brake pad contains grams of asbestos. Across all 1,000 affected turbines, the total quantity is measurable in kilograms — sealed inside locked structures in rural locations, generating no detected airborne fibres.

For comparison: six million tonnes of asbestos sit in 1.5 million UK buildings, including more than 90% of NHS hospitals, where 29% of it has been assessed as damaged. Asbestos-related disease kills more than 5,000 people a year in the UK. The government hasn't mandated its removal or set up a national register of where it is.

"No safe level" is an argument that cuts in more than one direction

There's no safe level of asbestos exposure. True. The same goes for benzene — which the IARC, the WHO's cancer research agency, puts in the same category as asbestos: Group 1, definitively causes cancer. Benzene is present in petrol at around 1% by volume, and anyone who drives a petrol or diesel car inhales it in vapour form every time they fill up — voluntarily, repeatedly, across decades.

The risk from sealed brake housings in rural turbines and the risk from the weekly visit to the petrol forecourt are not in the same universe. One is a thought experiment; the other is a routine. Anyone worried about the first might want to think about the second.

Irony is not the same thing as hypocrisy

Yes, there's a genuine irony here — if you're trying to build clean energy infrastructure and asbestos turns up in your supply chain, that's an awkward story. Real irony. Worth conceding.

But irony isn't hypocrisy. Hypocrisy would mean defending the asbestos, minimising it, or applying a lower standard to wind energy than you'd apply anywhere else. Consider two things. First, they're not defending it: the GMB union — not an anti-wind organisation — is the one demanding a full government account, and the people most invested in wind energy's credibility have the strongest incentive to take this seriously. They do. Second, if you were to argue — hypothetically, since nobody's actually claiming this — that managed asbestos in sealed components might be acceptable if it were somehow essential to a technology that demonstrably saves lives, would that even be hypocritical? No. That's proportionate risk-benefit reasoning — the same reasoning that governs aviation, medicine, construction, and nuclear power. It would only be hypocritical if you applied that logic to wind energy alone while demanding zero-tolerance everywhere else. Nobody's making that argument.

The actual balance sheet

Those 1,000 turbines, over their operational lifetimes, will displace enough fossil fuel combustion to avert hundreds of premature deaths from particulate matter, NOx, and SO₂ — the pollutants that come out of exhausts and smokestacks. The asbestos in their lift brakes — encapsulated, a few kilograms across the entire fleet, currently being replaced — has harmed no one.

Meanwhile the six million tonnes in UK schools and hospitals are still there, and the benzene is still at the forecourt. It would be interesting to know when the outrage extends to those.

This article was researched and drafted in collaboration with Claude (Anthropic).