On July 28th, the Dadu River, which entered the rainy season, was surging and rumbling. Next to an electric station in the mountainous area of Ganzi Prefecture, Sichuan Province, thousands of mining machines have entered a 24-hour operation state. In the factory, workers are loading mining machines from all over the country into the computer room.
A senior miner in Sichuan said that mine owners don't hate mountains and roads. He searched for a hydropower station in a deep mountain valley, and then built a mining factory in or near the power station, in order to buy electricity directly from the power station and save mining costs.
It is recognized by the industry that 70% of the world's bitcoin is produced in China, while 70% of the mines in China are located in Sichuan, especially in the Dadu River Basin.
However, in kangding city, Ganzi Prefecture, Sichuan Province, relevant administrative departments do not support bitcoin mining. According to the person in charge of kangding city Municipal Bureau of Land and Resources, on May 27th, a local working group was set up to investigate the situation within its jurisdiction. If some factories are suspected of illegal construction, they will face punishment.
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"Migratory bird" mine
In July, during the rainy season in the south, miners returned to Sichuan and Yunnan from Inner Mongolia and Xinjiang.
Early July is an inevitable choice. Senior player Xiaowu (a pseudonym) began to look for mines with 3,000 mining machines in Sichuan. The mine near Dadu River in Ganzi Prefecture is an ideal place. There are many hydropower stations here, and the electricity price is relatively cheap.
Xiao Wu thinks they are called "migratory birds" by the outside world. Sichuan and Yunnan, which are rich in hydropower resources, enter the dry season in winter. Players have moved to Xinjiang and Inner Mongolia for a long time, looking for coal-fired power plants here, and will not come back until the river rises in May next year.
"The direct power supply of the power plant is 2.8 cents per kWh, which is very cheap." Xiao Wu is familiar with it. Every penny cheaper is "terrible" for the cost savings of the whole mine. However, in the dry season, the direct supply of water and electricity in the mine is interrupted. They had to move to the north for the winter, although the price of thermal power once exceeded 30 cents.
Compared with the construction of fixed power plants, after years of migration, some mine owners have replaced power plants with containers. Which is more convenient to move from north to south?
These "migratory birds" mines have nearly 65,438+10,000 mining machines in large mines and only a few thousand in small mines. The so-called mining machine is actually a computer. The faster the operation, the better.
There are still some mines that are not moving. They chose to "sleep" in the original computer room for half a year.
Looking for electricity in the mountains
Bitcoin "mining" only consumes electricity. Every time a coin is dug, 50% of the income is used to pay the electricity bill.
You can avoid the state grid and buy electricity directly from the power station, which will save more costs. Most hydropower stations are located in deep mountain canyons. Rich mine owners can always find them and reach a direct power supply agreement with them, which not only reduces the electricity price, but also saves the "internet access fee" of the state grid.
Hydropower stations are also willing to cooperate with the miners. In the rainy season, there is a surplus of power generation. If it is not directly supplied to the mine, a lot of excess water will flow out in vain, and the wastewater can be sold, so the two sides will find the best reason for cooperation.
The mine of Jin Kang Hydropower Station in Guzan Town of Kangding can get 500 million kWh of electricity every year. According to the calculation of each 0.2 yuan, 1 100 million yuan will be paid to the power station.
On the premise of obtaining electricity, mine owners can invest tens of millions to build factories in power stations, and then "attract foreign investment". There are five workshops in the mine of Jin Kang Hydropower Station. This year, 30,000 mining machines have been installed, and the full load will reach 50,000.
Players who hear this news need to pay electricity and seat fees in advance and pay a deposit of several million yuan. "The market is good, and the mine owner can recover the investment within one year." Xiao Wu also mentioned that a few mine owners are not trustworthy. Failing to return the deposit as agreed after maturity, or returning the deposit after receiving a new deposit in the next year.
"The state government has not made it clear whether it supports bitcoin mining." Xiao Wu said that in order to cope with the inspection of local government departments, the mine will be called "big data project", which is one of the reasons why the mine owner can land smoothly, but this is not a real big data calculation. This is selling dog meat by hanging sheep's head. "
Therefore, mines are built in deep mountains outside expressways, national highways, provincial highways, provincial highways and county roads. The factory is actually a steel structure board house.
A "mine owner" revealed that due to the slow signing of the power supply agreement with the power station, it was impossible to follow the environmental assessment and construction reporting procedures of the factory construction first. "This is very common in the Dadu River Basin. When it is repaired, I will find a way to go through the formalities. "
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