The region has faced power shortages in recent weeks due to hot weather and lower than normal hydropower supplies from Yunnan province.

China is in the process of ordering Bitcoin miners to close up shop. See:

China's cryptocurrency-mining crackdown spreads to Yunnan in southwest

So clearly something is up in Yunnan province, in addition to other provinces that were previously ordered to stop Bitcoin mining, presumably to save much needed energy, not because Bitcoin is a threat to society.

Also, if the CCP was truly afraid of Bitcoin mining, it would shut it down nationwide simultaneously. It's shutting mining down only as needed. IMO, it actually wants as much Bitcoin mining to remain in China as possible. Why wouldn't they? It gives them better control over it.