NUCLEAR: Dueling reactor projects learn from each other's difficulties Kristi E. Swartz, E&E reporter Published: Monday, March 3, 2014 They are the first nuclear reactors to be built in the United States in 30 years. Please subscribe to EnergyWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.