Source: Total US Energy Flows 2018 (PDF)

Think of it this way, with fossil fuels, our society and our people use energy to a solid B on a normal grading scale. Adding hydroelectric and nuclear, we are an easy A. In 50 more years, with trillions more wasted on wind and solar, that will still be true.

We could, of course, push for advanced nuclear solutions, and in 50 years, we could half the fossil fuels and generate most of our power from fission.