1. Global Wind Statistics 2014. Technical report, Global wind energy council; 2015.
2. Iowa Wind Energy. Technical report, American wind energy association, Available from: 〈http://awea.files.cms-plus.com/FileDownloads/pdfs/Iowa.pdf〉; 2015.
3. Corporate Responsibility Report 2013. Towards a sustainable energy future. Technical report, Red Eléctrica Corporación; 2014.
4. The European offshore wind industry – key trends and statistics 2014. Technical report; European Wind Energy Association; 2015.
5. AWEA State RPS Market Assessment 2013. Technical report; American Wind Energy Association; 2013.