The benchmark measured environmental, social and governance risks for and opportunities of digital assets, taking into account a range of metrics including decentralization, energy consumption, community engagement. Then, the points for each metric were aggregated and weighted for an overall score of maximum 100 points, making up the final grade from AA (best) and E (worst).
Source: https://www.coindesk.com/markets/2023/07/13/ethereum-tops-new-crypto-esg-ranking-bitcoin-slammed-for-heavy-energy-usage/?utm_medium=referral&utm_source=rss&utm_campaign=headlines