July 23, 2026
Watts the fuss about AI?
How much energy do data centers and artificial intelligence use?
AI’s power bill has people stunned, snarky, and already fighting over who should pay
TLDR: AI itself may use about 0.5% of global electricity, while all data centers together use around 1.5%, and that share could rise fast. Commenters are torn between alarm, eye-rolling demands for better comparisons, and a fight over whether big tech or local communities should carry the cost.
The numbers are in, and the internet immediately did what it does best: argue about scale. The article says data centers — the giant buildings powering everything from streaming to search to chatbots — used about 1.5% of the world’s electricity last year, with AI itself at roughly 0.5% in 2025. In the United States, data centers may already be using 5% of all electricity, and commenters were split between “that’s huge” and “please, compare it to something normal so humans can understand it.” One reader basically begged for a reality check, pointing out that air conditioning uses far more globally, which turned the whole thread into a battle of “panic now” vs. “context matters.”
The hottest mini-feud? Whether it’s actually surprising that AI uses less power than the rest of data centers. One commenter was openly baffled: of course non-AI data centers use more — they run literally everything else online. Another went unexpectedly philosophical, saying people forget how much energy everyday stuff takes, like boiling a liter of water, which gave the thread a weirdly domestic vibe for a debate about giant server farms.
But the biggest mood was political frustration. One comment summed up the drama as a grim two-choice menu: either let giant companies build whatever they want, or block everything with neighborhood opposition. Their spicy middle-ground pitch — make big tech pay for the downsides while building more clean and nuclear power — felt like the closest thing the comments had to a peace treaty. Until the next electricity bill, anyway.
Key Points
- •The article says AI energy use should be evaluated both by total electricity consumption and by the electricity used per query.
- •The estimates discussed include electricity for AI model training and inference, plus data-center overhead such as cooling and lighting, but exclude end-user devices and cryptocurrency mining.
- •According to the IEA, data centers consumed about 485 TWh of electricity last year, equal to around 1.5% of global electricity generation.
- •Using IEA data, the article estimates AI consumed about 0.5% of the world’s electricity in 2025 and roughly 0.1% to 0.2% of total primary energy.
- •The article says the IEA base-case projection has data centers reaching 3% of global electricity demand by 2030, with most growth coming from AI-focused facilities.