Cryptocurrency News

Cambridge and IEA data shows bitcoin carbon intensity peaked last year



The intensity of bitcoin (BTC) carbon emissions may already be peaking, according to publicly available data from the University of Cambridge’s Center for Alternative Finance and the International Energy Agency, or IEA.

The environmental impact of bitcoin’s use of electricity is a favorite talking point of its critics and journalists on the crypto beat. But judging by the available data, Haas McCook, a retired chartered professional engineer, says bitcoin’s carbon emissions “peaked just a few months ago.”

McCook unpacked the data and defended This concludes in a Friday guest post on the website of Bitcoin Magazine:

“From above, it appears that bitcoin emissions peaked a few months ago, and thankfully, with the ban on bitcoin mining in China, has begun its aggressive march to zero emissions. This is expected That in a worst-case scenario, emissions from bitcoin will be less than a third of today’s emissions in five years, and in 10 years, bitcoin will emit nothing.”

BitAll’s bitcoin mining infrastructure was built over the past 12 years, giving miners a “second mover advantage” to leverage their operations of the latest, most sustainable green tech to power bitcoin mining.

Data from Cambridge Bitcoin Electricity Consumption Index It shows That global bitcoin mining has a “grid intensity” (carbon emissions per unit of electricity consumed) that is cleaner than the average for the entire global power grid. The world average is 463 grams of CO2 emitted per kilowatt hour. Bitcoin miners average 418 grams.

Meanwhile, the world grid intensity peaked last year if the energy economy stays on track with projections for the years 2021 and beyond, according to IEA data.

By design, computers running Bitcoin Core are required to use some electricity to correctly guess the input of the SHA-256 encrypted hash in order to validate and place new blocks on the Bitcoin blockchain.

SHA-256 (short for Secure Hashing Algorithm) is a one-way hash function published by the US National Security Agency in 2001, and is an integral part of the bitcoin design architecture. Computers test the guess by entering it into an algorithm and seeing if it matches the hash on the previous block. The first node to correctly guess the hash places the next block of transactions and rewards the bitcoin miner in newly generated bitcoin.

This proof-of-work, or PoW, mechanism qualifies nodes to participate on the network, forcing miners to risk the cost of electricity, and if their computers cheat the rules of the network. attempts, there is a risk of losing their operating costs without any profit.

Some bitcoin critics and even proponents say that its energy consumption poses environmental risks, and may contribute to human-caused global warming. Tesla CEO Elon Musk famously kicked off the price of bitcoin this year by announcing that the electric car maker would accept BTC for Tesla, then backpedaling.

musk said Tesla will start accepting bitcoin again when 50% or more of the miners’ energy use is confirmed to be from “clean energy” sources.

McCook says that most of the claims of bitcoin emissions are exaggerated:

“one of most widely rejected, yet the widely referenced claim of ‘academia’ is that bitcoin alone will increase the temperature of the planet by 2 °C.”

A Bitcoin Mining Council Survey Report Has Been Released This Week Estimated 56% Lasting Power Mix for Q2 2021 in bitcoin mining operations globally based on respondents’ answers.