The United States is the world’s largest economy (on a gross domestic product basis) and the second largest energy system (on a primary energy consumption basis), behind China. The United States is aiming for a carbon free power sector by 2035. This is an inspiring objective. This is also a challenging goal because in 2023 “only” 41% of the country’s electricity consumption came from decarbonized technologies (i.e., 23% from renewable energy and 18% from nuclear power).