France made a policy decision to reduce Nuclear from 75% of 50%, largely a populist response to Fukushima, and the perception that Nuclear is dangerous, not green, etc.. It was a political decision, not practical. We'll see if they actually are able to meet that goal, but most signs point to no. Regardless, my point is France, a G7 nation got to 75% nuclear. Fear is the main reason other countries can't.