BlockBeats News, June 4th, according to Antpool data, with the Bitcoin network's mining difficulty staying at a high level and electricity cost estimated at $0.06 per kWh, several older models of Bitcoin miners have fallen below shutdown price and entered a state of operating at a loss.
The Antminer S21, Antminer S3, Whatsminer M3S (360T), AvalonMiner A1466I series, and other models are currently experiencing negative daily net income, approaching the shutdown threshold.

