(1) What are the (a) projected, (b) current and (c) outstanding costs with regard to the (i) Medupi and (ii) Kusile Power Station projects; (2) whether a comprehensive study on meeting South Africa's energy needs has been conducted since the start of the Medupi and Kusile Power Station projects; if not, why not; if so, by whom; (3) whether the study made reference to the reactivation of dormant power plants; if not, why not; if so, what are the relevant details?