Obviously I’m virtue signaling, and I hope instilling a feeling of shame in people who support businesses that contribute to climate change.

But more than that, the emissions generated by the Colossus data centers are far worse than typical combined-cycle gas plants or data centers that buy renewable: these turbines emit NOx, fine particulates, carbon monoxide, and formaldehyde into a population-dense area.

I thought people knew about this already. Post from last year: https://simonwillison.net/2025/Jun/12/xai-data-center/