With Bitcoin falling below the $100,000 level, miners are finding it much harder to make money.
Electricity costs $0.06 per kWh, so even miners using efficient mining machines (27.5 watts per terahash) barely break even at around $97,000 per Bitcoin.
Machines with low efficiency or high electricity costs are already losing money.
The BTC dollar has fallen below $100,000, down 6% in the past 24 hours, putting pressure on mining revenues.
At $0.06/kWh, a mining machine with unit power of 27.5 W/T is currently running at around $97,000/BTC, close to break-even.
See the complete list here: https://t.co/IQ3u98NHsy pic.twitter.com/Y2ysJmmmyJ
— f2pool🐟 (@f2pool_official) November 14, 2025
Which miners are still profitable?
Data provided by F2Pool shows that there is a dramatic difference in profitability based on miner efficiency.
The most efficient hardware such as Antminer S21 XP Hyd. (12.0 W/T), the electricity rate is only 43% of the current BTC price. That means you only need $41,585 in Bitcoin to break even on your electricity bill. This elite-tier hardware remains highly profitable even at current price levels.
Other high-efficiency S21 models will follow suit, and all will manage to remain profitable as long as Bitcoin prices stay below $60,000.
In stark contrast, many old and inefficient machines are currently unprofitable.
For example, the Whatsminer M53 requires a price of $100,694 and the Antminer S19 requires a price of $118,641. The least efficient hardware on the list, the CopyMiner C7 costs an unsustainable $130,909 just to power it.
Bitcoin is currently trading at $95,290 after a significant price drop.