So yes federal taxpayers are paying for this too. Loan guarantees are not free. By the way, the loan guarantee for just these two nuclear reactors will be 8.3 billion which dwarfs the half a billion dollar Solyndra loan guarantee everyone is complaining about.
Unfortunately, nuclear subsidies in the US dwarf the very few incentives we have for renewable power. Almost the entire budget of the Department of Energy is devoted to supporting nuclear in one way or another.
Edit:
This is the link showing the amount of the loan guarantee:
http://www.nytimes.com/2010/02/17/business/energy-environmen...