Comment by simonw
17 hours ago
The absolute best thing I've read on this subject is this article here: https://about.bnef.com/blog/liebreich-generative-ai-the-powe...
It talks at great length about data center trends relating to generative AI, from the perspective of someone who has been deeply involved in researching power usage and sustainability for two decades.
I made my own notes on that piece here (for if you don't have a half hour to spend reading the original): https://simonwillison.net/2025/Jan/12/generative-ai-the-powe...
I find the following to be a great point regarding what we ought to consider when adapting our lifestyle to reduce negative environmental impact:
> In deciding what to cut, we need to factor in both how much an activity is emitting and how useful and beneficial the activity is to our lives.
The further example with a hospital emitting more than a cruise ship is a good illustration of the issue.
Continuing this line of thought, when thinking about your use of an LLM like ChatGPT, you ought to weigh not merely its emissions and water usage, but also the larger picture as to how it benefits the human society.
For example: Was this tech built with ethically sound methods[0]? What are its the foreseeable long-term effects on human flourishing? Does it cause a detriment to livelihoods of the many people while increasing the wealth gap with the tech elites? Does it negatively impact open information sharing (willingness to run self-hosted original content websites or communities open to public, or even the feasibility of doing so[1][2]), motivation and capability to learn, creativity? And so forth.
[0] I’m not going to debate utilitarianism vs. deontology here, will just say that “the ends justify the means” does not strike me as a great principle to live by.
[1] https://news.ycombinator.com/item?id=42549624
Hello Simon,
You mention that
> Google, Microsoft, Meta and Amazon all have net-zero emission targets which they take very seriously, making them "some of the most significant corporate purchasers of renewable energy in the world". This helps explain why they're taking very real interest in nuclear power.
Nuclear is indeed (more or less) zero-emission, but it's not renewable.
Thank you for the synthesis and link to the original article, it's a good read!