The end of nuclear was decided long before Fukushima - in 2000.
The Merkel government was on its way to change that, against protests (2010). Shortly after that Fukushima happened (2011), and Merkel had to return to the Atomausstieg (also 2011).
Chernobyl, Asse, Aachen, Gorleben all didn't change anything in our politics. But Fukushima did. Immediately.