As greater attention is paid to the carbon impact of PoW blockchains, NFTs are coming under examination. Due to the processing power needed, the recent development in non-fungible tokens, or NFTs, has been accompanied by debate and worries about the technology's impact on the environment. So, how much energy do NFTs use? Are NFTs harmful to the environment?
NFTs are among the most time-consuming transaction types on a blockchain since the process of creating, bidding on, selling, and transferring them frequently necessitates several complex transactions and the execution of smart contracts. Transaction costs that can often be hundreds of times higher than those of a simple transaction reflect this.
Due to overwhelming negative feedback over the environmental impact of NFTs, the art portfolio website ArtStation decided to cancel its NFT drop of well-known painters hours after it was announced.
The precise numbers behind the true carbon footprint of NFTs, however, are still obscure.
The CryptoArt platform, which computes the energy consumption and CO2 emissions of any NFT on SuperRare, Nifty Gateway, or any individual transaction on Ethereum, was created in December 2020 by computational artists and engineer Memo Akten.
The above NFT on SuperRare reportedly used 421 kWh, or about 1.5 months' worth of an EU resident's electrical use, according to the website. On the website, Akten added that the typical NFT has a footprint of roughly 340 kWh and gave a link to his in-depth investigation that underlies his numbers.
In a response to these environmental concerns, SuperRare wrote an article in which they said that calculating transaction costs for NFTs was the wrong strategy because the overall expenses of the blockchain remained the same regardless of the amount of transactions.
SuperRare stated that they are aware of the inefficiencies of PoW blochains, along with many other members of the Ethereum community, and have pledged to donate money to support ETH2 research while looking into alternate scaling alternatives.
In a seemingly paradoxical move, Medio Demarco, co-founder and head of research at Delphi Digital, recently argued that bitcoin mining might really contribute to save the environment. He claims that the network rewards inexpensive energy, which is now synonymous with sustainable energy.
He bases part of his argument on the fact that miners use clean electricity that would otherwise go unused, enabling clean energy farms to earn 100% of their output rather than just a portion of it. This might then be sufficient to pay for new sustainable energy infrastructure. He refuted: when deciding whether to invest in new solar infrastructure now or wait until the economy improves, "the impact that makes on the bottom line can be the difference."
