Does AI Use More Energy Than Bitcoin?
Bitcoin and AI are the two computing workloads most often accused of burning through electricity. As of the mid-2020s, Bitcoin mining still uses more total energy than AI inference, but AI is the faster-growing line and is projected to close the gap.
The honest comparison needs care, because the two do fundamentally different work and are measured on different bases.
The rough numbers
Estimates put Bitcoin at roughly 100 to 150 terawatt-hours per year, comparable to a mid-size country. AI data-center electricity is smaller today but rising quickly as training runs get larger and inference volume explodes, a trend detailed in how much electricity does AI use.
Both figures are contested and move fast, so treat any single number as a snapshot rather than a fixed fact.
Why they are hard to compare
Bitcoin mining is intentionally wasteful: proof-of-work makes computers race to solve a puzzle whose only purpose is to be hard. The energy is the security model.
AI energy, by contrast, does useful computation, answering questions, writing code, generating images, and per-request costs are small (see how much CO2 does ChatGPT produce). AI demand grows with usefulness; Bitcoin demand grows with price.
Where each is heading
Bitcoin energy tends to track its price and the efficiency of mining hardware. AI energy is on a steep upward curve driven by model size and adoption, though efficiency gains per token partly offset it.
The key difference for sustainability is that AI can be measured per request and offset, while proof-of-work is structurally locked to heavy energy use.
The headline: Bitcoin still uses more total energy today, but AI is growing faster; the difference is that AI energy buys useful work and can be measured and offset per request.
FAQ
Does AI use more electricity than Bitcoin?
Not yet, on most estimates. Bitcoin mining currently uses more total annual electricity than AI inference, but AI demand is growing faster and is projected to narrow the gap over the coming years.
Why does Bitcoin use so much energy?
Bitcoin uses proof-of-work, which deliberately forces computers to perform enormous amounts of computation to secure the network. The high energy use is a feature of the design, not a side effect.
Can AI energy use be offset?
Yes. Because each AI request can be measured for energy, carbon and water, a provider can retire verified offsets against it. Ecoia offsets past 200% of measured impact.