Diversity of energy source is the strength of U.S. electricity generation, serving as a hedge against supply disruptions caused by geopolitical events or commodity shortages, as occur with natural gas. New advanced nuclear power plants and advanced coal-fired power plants are best suited to supply baseload electricity. This paper was originally presented by the Nuclear Energy Institute to the Conference on Natural Gas Supply and Demand, United States Senate, Energy and Natural Resources Committee, January 24, 2005