A gigawatt (GW) is a unit of power equal to one billion watts. To put this into perspective, a watt is a measure of power, and there are 1 billion watts in 1 GW. One gigawatt is enough energy to power about 750,000 homes. A gigawatt is a massive amount of energy equaling 1000 megawatts, which is enough to power a medium-sized city. According to the U.S. Energy Information Administration, in 2020, the total annual electricity consumption in the United States was approximately 3.84 million gigawatt-hours (GWh) . To convert this into gigawatts (GW), you would divide the GWh value by the number of hours in a year (8,760 hours). Therefore, the approximate average electricity consumption of the United States in terms of gigawatts would be around 438 GW.