I dont know how you would do it, but I would simply
FIRE THE CEO
And then fire the entire management executive. They are totally useless. They have been in charge for 2 years and still they havent really done anything to deal with it. The public has said many a times that a lot of Eskom employees need to be shown the door, but that never happens. And the CEO hardly objects to anything. Heck they stole R1.5 billion bucks or parts from under his watch yet he doesnt do anything but keep asking for more money.
De Ruyter should be fired, as simple as that. When a ship sinks, the captain should go down because it all happened during his watch, but he is there as a white puppet to make the tax payers happy, and he isnt really doing anything that he is supposed to be doing, other than deflect the criticism.