In the world of Bitcoin, the price is highly unpredictable. Trends can change in the blink of an eye; a profit can turn into a loss in a flash. Many people spent days and nights on staring at the candle line, but the outcome is still pathetic. However, at least in the last two years, there has been a small group of people, usually called "miners," can achieve a considerable stable profit from Bitcoin.
Don't believe it? Let's retrospect the income of miners in the past two years.
On January 1st, 2015, the price of Bitcoin at 8:00 was 1,938 yuan. If you happened to get 1,938 yuan in your hand, you could use this money to buy one bitcoin or 1.421 Terrahash (Antminer S3, the most power-saving miner at that time). These Hashrates consume 19.2 kWh of electricity per day; say the price of electricity is 0.32 yuan/kWh, then your daily power cost is 6.144 yuan. If you choose to sell the bitcoins you mined in the previous day at 8:00 every day, then, at the end of 2015, you will achieve a total income of 5,117.61 yuan. Namely, the return on investment (ROI) would be 164%.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fcdn-images-1.medium.com%2Fmax%2F800%2F1%2APgF4a8j3kzjAiNHQqS_2yA.png&t=665&c=Cz02TQ3Wh_dNxw)
The Performance of 1.421T Standard Hashrate in 2015 (Sell all bitcoins)
Of course, if you choose to save those bitcoins and only sell them when you have to pay the electricity bill. Then, at the end of 2015, you will achieve a total income of 3.04144716 BTC, namely the ROI would be 204%.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fcdn-images-1.medium.com%2Fmax%2F800%2F1%2AyAeoE3JTwWY8zCCXngxDNw.png&t=665&c=SXV4-GPLwjfq-g)
The Performance of 1.421T Standard Hashrate in 2015 (Save as many coins as possible)
In case you do not know, by the end of 2015, the 1.421 Terrahash in your hand is still worth about 800 yuan. Isn't mining a worth-trying business?
In 2016, due to the launch of Antminer S7 and Avalon A6, the difficulty of Bitcoin surged dramatically; in the meantime, the output of Bitcoin halved. Therefore, many people believe that mining is no longer profitable. However, in fact, it is not the case.
On January 1st, 2016, the price of Bitcoin at 8:00 was 2824 yuan. If you happened to get 2,824 yuan in your hand, you could use this money to buy one bitcoin or 1.882 Terrahash (Antminer S7, the most power-saving miner at that time). These Hashrates consume 7.2 kWh of electricity per day; say the price of electricity is 0.32 yuan/kWh, then your daily power cost is 2.304 yuan. If you choose to sell the bitcoins you mined in the previous day at 8:00 every day, then, at the end of 2016, you will achieve a total income of 3,492.89 yuan. Namely, the return on investment (ROI) would be 23.65%.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fcdn-images-1.medium.com%2Fmax%2F800%2F1%2AmbPIjGVE2tHua3RX-njVrw.png&t=665&c=8ZpKyY6uJSW_AA)
The Performance of 1.882 T Standard Hashrate in 2016 (Sell all bitcoins)
Of course, you may say that since the price of Bitcoin increased to 6,836 yuan at the end of 2016, it would be more profitable to buy one bitcoin and just keep it. That is right only if you can keep it. Besides, if you save the bitcoins you mined and only sell them when you have to pay the electricity bill. Then, you will find yourself achieved a total income of 1.06252322 BTC at the end of the year. Again, the 1.882T Hashrate in your hand is still worth about 1,000 yuan.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fcdn-images-1.medium.com%2Fmax%2F800%2F1%2AVBW3WGpA0Ff-idm-ssrVZw.png&t=665&c=mSFZzRtIwYPbxA)
The Performance of 1.882 T Standard Hashrate in 2016 (Save as many coins as possible)
Now, in early 2017, the price of Bitcoin is about 6,100 yuan; the most power-saving miner in the market costs less than 900 yuan per Terrahash. This kind of Hashrates consumes 3.6 kWh of electricity per day. Since the price of electricity is 0.32 yuan/kWh, your daily power cost is only 1.152 yuan.
Why are you still waiting?
https://haobtc.com/exchange/main