published in energy
Solar PV: global capacity, top ten countries, 2017
As it can be observed in the graph, 85.8% of the installed solar power in the world is located in only ten countries. The largest amount of installed power in 2016 was in China (131.1 GW), in the United States (51 GW), in Japan (49 GW), in Germany (42.4 GW), and in Italy (19.7 GW). Italy ranks 5th in the world.
Source: Renewables 2018, Global Status Report