ESKOM’s electricity supply system would remain vulnerable for the rest of this week due to a shortage of generating capacity as several units were out of service, the power utility said yesterday. It said its units were out due to planned and unplanned outages. “Due to the unavailability of a reserve margin (spare capacity), any extra load or faults in the system may necessitate the need to go into load shedding,” it said. Spokesman Khulu Phasiwe told eNCA the risk of load shedding for this week was medium to high. – Siphamandla Goge