The map above comes from UK Data Explorer and shows:
The map above, shows the various electrical plugs and sockets used around the world. As you can see, few countries use just one type of plug or socket.
Instead they often use multiple different plugs in tandem depending on location and age of the building.
The map above shows which countries have operating commercial nuclear power stations and which ones do not as of April, 2016. At last count, 31 countries generate at least some of their electricity needs via nuclear power.