[ad_1] Seven of the biggest Bitcoin mining firms in the US are arrange to make use of almost as a lot electrical energy as all of the properties in Houston, in accordance with information disclosed Friday as a part of an investigation by congressional Democrats who say miners ought to be required to report their vitality use.The USA has seen an inflow of cryptocurrency miners, who use highly effective, energy-intensive computer systems to create and observe the digital currencies, after China cracked down on the follow final 12 months. Democrats led by Senator Elizabeth Warren are additionally calling for the…