Simulation: Eskom is able to meet demand cheaply by dispatching its own stations ILLUSTRATION BASED ON 31 AUGUST 2016 Total Generated Eskom Generated International Imports Nuclear Coal station Pumped Storage Hydro Other IPP Diesel 5 10 15 20 25 30 Capacity (GW) Other IPPs Hydro Average marginal cost: 23 c/kWh Pumped storage Arnot Tutuka Camden Grootvlei Matla Komati Majuba Kriel Kendal Medupi Duvha Matimba Hendrina Lethabo Koeberg Cahora Bassa 00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Time of Day 1