All that mined is not green: Bitcoin’s carbon footprint hard to estimate
The debate around the environmental impact of the Bitcoin mining ecosystem is heating up once again as academics have provided a fresh dose of perspective on the subject. In an opinion piece written by Noah Smith, a former assistant finance professor turned columnist, took aim at the Bitcoin (BTC) mining industry in March, suggesting that the constantly growing energy consumption of the network is simply unsustainable. Smiths belief is that more countries will clamp down on Bitcoin mining as they use more power, given that the increasing price of BTC is always matched by rising hash rates. While Coin Metrics founder Nic Carter has rebutted some of the points raised in Smiths column, there still seems to be divided opinion around the amount of energy that Bitcoin mining draws, the sources of this energy and the carbon footprint that the industry has on the planet. The mining industry is arguably inclined to downplay the extent of its resource-intensive work, and some industry insiders have suggested that talk of Bitcoins environmental impact is a non-issue and that data suggests a large share of hash power draws energy from renewable sources. Nevertheless, environmental advocates have aimed their sights at the industry in return, which