"The best time to plant a tree was 20 years ago.
The second best time is now."
A popular Chinese proverb apparently.
(France started building their reactors in the 70's to 80's. Originally licensed for 30yrs, they are still running, inspected regularly, producing 70% of their electricity. And they're building more!)
France derives about 70% of its electricity from nuclear energy. This is due to a long-standing policy based on energy security. Government policy is to reduce this to 50% by 2035. France is the world's largest net exporter of electricity due to its very low cost of nuclear generation.
www.world-nuclear.org