Data centers consume around 1.8% of all the electricity used in the United States. According to the U.S. Energy Information Administration, the total electrical consumption in the United States in 2020 was 3.8 trillion kWh.
Taking 1.8% of 3.8 trillion leaves you with 68.4 billion kWh. The average American home uses around 10,650 kWh of electricity annually. So data centers consume around the same amount of energy as 6.4 million homes every year.