Progress Energy moved last week to calm growing concern about its idled Crystal River nuclear plant, telling state lawmakers the problems that shut down the reactor two years ago "could neither have been predicted nor prevented."

In a three-page letter to legislators, Vincent Dolan, president and CEO of Progress Energy Florida, criticized what he called "unsubstantiated claims, allegations and misinformation" about the utility's failed approach to replacing old steam generators at the plant and its subsequent repair strategies.

View the letter here: Page 1, 2, 3