In 2026, mining Bitcoin still remains highly profitable, even though the BTC price has dropped to $75.78K from before. Newer Bitcoin mining machines are much more energy-efficient, making them still a worthwhile investment.

For those interested in buying mining equipment, I recommend focusing on three key figures: hash rate (TH/s), energy efficiency (J/TH), and power consumption. These numbers will tell you how much income the machine can generate and what the electricity costs will be.

If you're a beginner with a limited budget, the Bitmain Antminer S19j Pro+ priced at $1,900 is a very good option. Although its hash rate isn't the highest, its energy efficiency of 29.8 J/TH results in low electricity costs, yielding about $4-5 profit per day or $1,500-1,800 annually. The payback period is approximately 14 months.

For those with a larger budget, the Bitmain Antminer S21 Pro at $5,200 is currently the best on the market. With a mining power of 180 TH/s and energy efficiency of 19.2 J/TH, it is the most efficient. It generates about $15-20 daily, with a payback period of around 9 months.

There’s also the MicroBT WhatsMiner M60S at $4,800, which is a good alternative. Or, if you want a balance of price and performance, the Canaan AvalonMiner A1366 Pro at $3,900 is quite worthwhile.

However, before making a purchase, you should consider your local electricity costs, maintenance fees, and installation space. The profit figures calculated are ideal estimates; in reality, other factors may come into play.

Many people ask whether buying second-hand Bitcoin mining machines is worthwhile. In my opinion, if the machine still functions properly and the price is 30-40% lower than new, it could be a good deal. But you should carefully check the condition of the machine and consider some form of warranty to mitigate risks.