I recommend the link: https://www.energydigital.com/renewable-energy/top-10-solar-producing-countries

https://www.bp.com/en/global/corporate/energy-economics/statistical-review-of-world-energy.html

Hi, You can find anything in the following link and you can also download the data for further analysis and using in your research.

https://www.eia.gov/beta/international/data/browser/

since maybe it is a little confusing at first ,I prepared the following excel file which is sorted by solar energy Capacity in year 2015.