U.S. House Energy and Commerce Committee Sends Letter to Miners Like Riot to Understand Environmental Impact of PoW

According to The Block, the U.S. House of Representatives Energy and Commerce Committee sent letters to Core Scientific, Marathon Digital, Riot Blockchain, and Stronghold Digital Mining to understand the impact of more proof-of-work (PoW) on the environment, and how it relates to emissions and "excessive e-waste”. The committee asked for information on how much energy each company’s mining facilities will use in 2021, what energy the facilities will be using, and the proportion of renewable energy used, as well as whether the companies have cut back on crypto mining over the past 12 months to support Days of grid stability, and average cost per MW and profit per MW per facility.