Whether any studies regarding (a) costs and (b) feasibility were conducted before signing any of the Renewable Energy Independent Power Producer Programme (REIPPP) deals; if not, (i) why not and (ii) on what grounds and basis were the REIPPPs pursued; if so, (aa) was each study published, (bb) who conducted each study, (cc) was a tender issued to conduct each study, (dd) what was the cost of conducting each study, (ee) what is the title of each study and (ff) where are the copies of the studies available?