The letter asked Granholm when the energy administration will implement a rule that makes it mandatory for firms to disclose energy data, and when the EPA plans to start collecting data from miners that generate more than the annual equivalent of 25,000 tons of carbon dioxide. The EPA has the authority to collect emissions data from all firms above that threshold, and at least two miners, Greenidge Generation (GREE) and Stronghold Digital Mining (SDIG), generated around 10 times more than the minimum in 2021.