(1) Whether the Special Investigating Unit (SIU) is investigating corruption within Eskom; if not, why not; if so, (2) whether SIU is conducting its investigation at the request of Eskom; if not, what is the position in this regard; if so, (3) whether it is procedure for the SIU to conduct investigations at the request of state entities; if not, what is the position in this regard; if so, what are the relevant details; (4) whether it is procedure for state entities to pay for such investigations; if not, why not; if so, what are the reasons for this; (5) whether the investigation uncovered any corrupt actions; if not, what is the position in this regard; if so, what are the relevant details?