Here is a great thought on the challenge of choosing energy sources from an article by Kerry A. Lynch, Senior Fellow for American Institute for Economic Research:
Nuclear power currently provides about 20 percent of total U.S. electric power. If you advocate “no nukes,” that means finding an alternative source for that 20 percent (or cutting electricity use). The major source for our electric power, however, is coal. So eliminating nuclear power would likely result in burning more coal. If your goal is cleaner energy, this is a poor trade-off. Nuclear energy emits no carbon when it is produced, while coal emits more than any other fossil fuel.
The whole piece “Green Dreams vs. the Energy Dilemma” is worth a read.