A group of Democratic lawmakers led by Senator Elizabeth Warren of Massachuttes has asked six crypto mining companies, including Riot Blockchain, to answer questions about the impact of their operations on the environment and cost of electricity in the US. In separate letters to the chief executives of each firm, the group asks the companies to detail how much electricity they consume, their scaling plans and any agreements they have in place with local utility companies. They have until February 10th to reply.Lawmakers say they’re concerned about what a dramatic increase in domestic cryptocurrency mining has meant for the environment and consumers. Specifically, they cite a 2021 study from the University of California, Berkeley that estimated crypto mining in upstate New York raised annual electricity bills by approximately $165 million for small businesses and $79 million for consumers, “with little or no local economic benefit.” They also point to the fact that energy consumption related
