> The main reason no new nuclear power plants have been built in the United States in 30 years is that they have proven to be poor investments

Uh... no. The main reason no new nuclear power plants have been built in the US is because 3 mile island and chernobyl scared the shit out of people.

Both of those incidents were caused by people going outside the safety protocols. Nuclear power, just like anything else, is VERY dangerous if you ignore safety.