Eskom – Introduction On December 9 we said the following …
• We apologised to the nation for the inconvenience of the past few weeks due to load shedding.
• We communicated that for an extended period the power system is extremely constrained and vulnerable.
• With the system being tight, any abnormal event pushes us into load shedding.
• With the reserve margin being low , we do not have enough capacity to meet demand , necessitating planned, controlled and rotational load shedding, to protect the power system from a total country – wide blackout.
http://www.eskom.co.za/news/Documents/20150115CE_SystemStatusPresent.pdf