See this chart: https://en.wikipedia.org/wiki/Nuclear_power_in_the_United_States#/media/File:US_Nuclear_Power_Reactors_1955-2011.png https://en.wikipedia.org/w

See this chart: https://en.wikipedia.org/wiki/Nuclear_power_in_the_United_States#/media/File:US_Nuclear_Power_Reactors_1955-2011.png https://en.wikipedia.org/wiki/Nuclear_power_in_the_United_St... Edit: Apparently they approved NuScale's Small Modular Reactors: NuScale spent over $500 million and more than 2 million labor hours to compile the information needed for its design certification application.