Today, the United States depends on nuclear energy for 20 percent of the electricity that powers the country’s economy and strengthens energy security. Our 104 nuclear power plants operate on average more than 90 percent of the time. In comparison, hydro, wind, and solar have average capacity factors in the range of 24 to 30 percent. This makes nuclear energy one of the most reliable sources of electricity in the world. As we plan for our future , we must continue to utilize and build upon this historically reliable supply of electricity.