AI’s Energy Impact: Little Known, Big Problem
- OpenAI CEO Sam Altman shared that each ChatGPT query uses about 0.34 watt-hours, roughly the energy of a light bulb for two minutes or your oven for one second
- But that number doesn’t include training, data center cooling, or infrastructure overhead. Without full disclosure from big tech, it’s impossible to know the real energy amounts.
Lack of Transparency Amplifies the Mystery
- A recent Wired analysis reveals that 84% of LLM (large language model) usage has zero environmental data available
- As Hugging Face’s climate lead Sasha Luccioni puts it:
“You can buy a car and get MPG. With AI? Nothing.”
No consistent reporting, no regulations, just unknown emissions and hidden costs.

AI’s Growing Share of Data Center Energy
- A recent estimate suggests AI now consumes 20% of all global data center electricity and this could double within a year
- To visualize: AI could soon power nearly half of all data center energy use on par with small countries like Switzerland.
Why Everything Is So Complicated
- Energy estimates vary widely based on hardware usage, model size, and operation type (training vs inference).
- Some AI models use cleaner chips, like BLOOM that releases 25 tonnes of CO₂ compared to GPT-3’s 552 tonnes
- And that’s just computing. Cooling, hardware production, and water demands are even harder to track.
What Experts Say & What Can Change
- MIT and other researchers warn: energy and water footprints of AI models are being brushed under the rug
- Sasha Luccioni and others urge for standards similar to MPG or food labels, calling it “top of the agenda” for regulators
- Tech giants like Google released some info earlier but updates have halted since 2023, making the data outdated .
For the full breakdown and deeper insight on this climate conundrum, read the original Wired report on AI energy use.
Conclusion
AI powers unmatched innovation, but that progress carries hidden energy and environmental costs. Without transparent data from tech leaders, the real scale of AI’s carbon footprint remains largely unknown. It’s time for clearer disclosure, smarter regulations, and sustainable AI design before the next generation of models lights up more than our screens. Were you aware of AI’s energy use?