Full definition
In Proof of Work, miners compete in computing power to validate blocks: the first to find the solution wins the fees and reward. The more the network is used, the higher the difficulty and electricity consumption. Bitcoin’s network therefore consumes 138 TWh per year in 2024 (Cambridge CBECI), as much as Poland. All major protocols except Bitcoin have switched to Proof of Stake.
Also known as
- Preuve de travail
Key figures
- 138 TWh/yearBitcoin network electricity consumption in 2024 (Cambridge CBECI)
- 39.8 MtCO2eBitcoin network GHG emissions in 2024 (Cambridge Digital Mining Industry Report 2025)