The biggest installers of solar were China, Japan, the U.S. and Germany. China installed 11.3 GW of PV systems in 2013, while Japan installed 6.9 GW, the U.S. installed 4.75 GW and Germany installed 3.3 GW of solar capacity.
Over half (59 percent) of solar installations were in Asia in 2013, while Europe's market share was 28 percent.
The total installed capacity of the International Energy Association's photovoltaic power systems program is 123.2 GW. Approximately 10.8 GW of solar power exists in countries outside the IEA's group. Germany still has the biggest solar market in Europe, with 35.9 GW of solar capacity.
In Jan. 2014, according to Platts, Germany installed 193 MW of solar capacity, which was 30 percent less year over year. Solar PV is Germany's largest source of energy when measuring capacity, but solar power contributed only about 5 percent to Germany's energy output in 2013. Germans will pay an additional 18 percent in subsidies in 2014 as part of their electric bill, despite the drop in the cost of solar energy. Meaning solar operators should see profit growth in Germany this year.