1. World Renewable Global Status Report,2016
2. Installed PV capacity at 227 GW worldwide;Meza;PV Mag.,2016
3. UK Solar Industry Hits 10 GW Cumulative PV Capacityhttp://www.solarpowerportal.co.uk/news/exclusive_uk_solar_industry_hits_10gw_cumulative_pv_capacity_3728
4. Progress with PV Deployment under FiTshttp://www.uksolar.org.uk/3-progress-with-pv-deployment-under-fits/