Power Consumption for Bitcoin Mining Is Now Ranked 61st in the World
Bitcoin prices have been towering in the past couple of weeks. This is cause for celebration for users who have heavily invested in the cryptocurrency; but, it appears the value of bitcoin is not the only thing that has hit the roof in 2017. Bitcoin mining energy consumption has also reached new heights.
A research study conducted by PowerCompare—a U.K.-based company for energy comparison tariff—found that the average power used to mine bitcoins this year has already gone beyond the annual energy consumption for some 159 countries. In particular, the global average power spent on bitcoin mining has far outstripped the energy consumption in Ireland and a couple of African countries.
This new study was based on data from Digiconomist, whose current estimation of power used to mine bitcoin hovers around 30.14 TWh annually. This figure is way above Ireland power consumption that currently stands at 25 TWh yearly. In fact, recent research from Dutch Bank ING found out that one bitcoin transaction consumes sufficient electricity to power an average household for a whole month.
At this rate, if bitcoin miners were a single country, it would be positioned 61st in the world based on power consumption, comparable to Slovakia and Morocco. PowerCompare has already predicted that if the trend continues, bitcoin mining will expend the entire world’s electricity by February of 2020!
Why bitcoin mining is increasing power consumption levels
What makes bitcoin mining an energy black hole?
Apparently, it is the computational requirements that process the complex cryptographic problems that miners must solve to be rewarded with the cryptocurrency. Just like other notable cryptos such as Ethereum and Litecoin, Bitcoin depends on miners to validate transactions performed in their respective blockchains.
To verify transactions, miners are required to solve complex mathematical problems, which on becomes increasingly difficult as more and more miners join the mining bandwagon. The more byzantine the cryptographic problems, the more the processing power that is needed to solve them.
In the case of bitcoin—the most popular cryptocurrency—a multitude of miners now make it absolutely necessary to use ASICs (Application-Specific Integrated Circuits) which consume considerable amounts of electricity. At present, ASICs have been designed to provide far more efficient computations, both in terms of the hash rate and power consumption when compared to CPU or GPU mining.
But the ASICs haven’t really resolved the hurdles of power consumption.
Ideally, the use of ASICs meant that the total time required to validate new blocks drastically reduces too. This hasn’t happened because of the way the bitcoin protocol was conceived. Apparently, the mining difficulty in bitcoin ensures that the total time taken for generation of new blocks must be kept constant.
As a matter of fact, the Bitcoin network automatically alters the difficulty level for bitcoin mining to ensure the discovery of new blocks every 10 minutes by miners based on two factors. First, there is the global block difficulty that forces valid blocks to have a hash value that is below the target to ensure the difficulty level is maintained.
Second, the number of miners that are actively participating in the mining process has been soaring, meaning the difficulty level has remained constant for a while now. Also, the mining difficulty automatically adjusts after every 2016 blocks on the Bitcoin network. Depending on how many users were actively mining – together with their combined hashpower—and the time it takes to find the 2016 blocks, the difficulty can either go up or down.
As the mining difficulty increases, miners should acquire more powerful hardware to accommodate for the adjustment which again increases the computational electricity. It is also worth noting that there is no maximum mining difficulty that has been set for the Bitcoin network. There is a possibility that the mining difficulty will continue to rise until all the Bitcoins are mined have been mined by the year 2140.
This means that power consumption in Bitcoin is not likely to decrease in the near future.
Challenges of mining Bitcoins
Here are some challenges of Bitcoin mining:
#1: Environmental hazards
The massive growth of cryptos has set up an exponential demand for processing power. The inordinate amounts of power required to mine bitcoins make it an environmental hazard since much of the earth’s electricity is still generated from greenhouse-gas-generating fossil fuels. This implies that bitcoin mining could be contributing to the climate changes and global warming.
#2: Stumbling block for mass adoption
The bitcoin cryptocurrency was conceived as a decentralized, peer-to-peer and trustless currency free from regulations of government agencies and financial institutions such as banks. Unfortunately, the adoption rate is discouraging. This can partly be attributed to the high energy consumption costs.
A recent study conducted by researchers from the HINUI (Hamilton Institute at the National University of Ireland) found that the cost of Bitcoin mining on the commodity hardware at present far exceeds the price of the rewards. In fact, Bitcoin mining has now been left to the big players who have the money to buy expensive ASICs with some of them leasing their hardware to small players in the so-called cloud mining.
#3: Rise of illegal piracy
The rise of bitcoin values is a cause for celebration in the crypto universe. It means that the entire global community is beginning to appreciate the value of cryptocurrencies in the world economy. However, mining energy consumption is soaring at an alarming rate. The quicker we find mechanisms to make bitcoin and other cryptocurrency mining electricity use “greener,” the better it would be for the Blockchain technology that is often heralded as the next internet.
Featured image courtesy of Shutterstock.