According to PANews, the operational costs of several models of Bitcoin mining machines, including the Antminer S19, T19, and the Whatsminer M33S+ and M30S+, have come close to their shutdown prices. This calculation is based on an electricity price of $0.06 per kilowatt-hour. Following the halving of Bitcoin, the running costs of these machines have increased significantly.
In addition, with the decrease in popularity of the Runes project, miners' earnings have also reduced. Currently, the electricity costs of the highest-grade Bitcoin mining machines account for more than 50% of their operational costs. This increase in operational costs and decrease in earnings could potentially impact the profitability of Bitcoin mining.