China's Bitcoin mining share rebounds after four years… surplus power and excess data center infrastructure influence

Bitcoin (BTC) mining activity in China is expanding again for the first time in four years since the 2021 nationwide crackdown.

On the 29th (local time), Cointelegraph reported that China's share of global Bitcoin hashrate had recovered to about 14% as of 2025. CryptoQuant estimated China's actual Bitcoin mining share at 15~20%. Accordingly, China's Bitcoin mining share, which had plunged after the People's Bank of China's 2021 comprehensive ban on virtual asset (cryptocurrency) related economic activities, rose to third place following the United States and Kazakhstan.

The outlet analyzed that surplus power and excess data center infrastructure are the main causes. The outlet explained, "Western regions such as Xinjiang and Sichuan have a lot of surplus power because coal- and hydro-based generation exceeds demand, and transmission infrastructure constraints make external supply difficult," and added, "Local data centers have also been overbuilt, increasing idle capacity and accepting leasing demand from mining companies."