Proof of work (PoW) is a decentralized consensus mechanism that prevents system gaming by requiring network participants to invest time and effort in resolving an arbitrary mathematical conundrum. But, why is Proof Of Work so energy-consuming?
According to studies, Bitcoin uses 127 terawatt-hours of electricity annually (TWh). The amount used exceeds Norway's whole yearly electricity consumption. In actuality, Bitcoin needs 707 kWh of electricity for every transaction, 11 times more than E
Although the environmental impact of cryptocurrencies isn't unique to Bitcoin, its widespread use and particularly ineffective consensus method make it an easy target. The underlying blockchain technology, however, may hold the secret to a more environmentally friendly future.
Why Is Proof Of Work So Energy Consuming
It doesn't make sense theoretically for Bitcoin to use a lot of electricity. To purchase and sell bitcoin, you simply need to point and click or tap on your smartphone. For decades, we have had technology that essentially accomplishes the same for different types of digital transactions.
But it's Bitcoin's decentralized structure that drives its huge carbon emissions footprint.
Bitcoin requires computers to tackle increasingly difficult math problems in order to verify transactions. It takes a lot more energy to operate this proof-of-work consensus process than most people understand.
“In the case of Bitcoin, this is done by having many different competitors all conduct a race to see how quickly they can package the transactions and solve a small mathematical problem,” says Paul Brody, global blockchain leader at EY.
The miner who solves the mathematical equation the fastest not only confirms the transaction but also receives a little payment in bitcoins as a reward for their trouble.
This method didn't use a lot of electricity in the early stages of Bitcoin. The mathematical problems will get much, much harder as more people try to solve them, though, because that's how the cryptocurrency's technology works, and this dynamic will only get worse as more people try to invest in Bitcoin.
Electricity is being used by several miners who are competing for rewards. Even though millions of computers are competing to solve the same issue, only one will finally be awarded the Bitcoin prize.
“Of course, this is wasteful in the sense that 99.99% of all the machines that did work just throw away the result since they didn't win the race,” says Brody. While this process produces a fair and secure result, it also creates a ton of carbon emissions. “I very much doubt [whoever founded] Bitcoin anticipated such enormous success in the future and, consequently, the enormous amounts of power we’re talking about,” Brody says.
"Bitcoin POW: Why Is Proof Of Work So Energy Consuming?" I hope this article can provide you with a better understanding of why POW is so energy consuming.
