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JOHANNESBURG - Eskom has implemented Stage 6 blackouts until Monday.
The Electricity Minister and the utility says they were caught off guard by the sudden spike in demand.
WATCH: Ramokgopa and Eskom provide reasons behind Stage 6 blackouts
Kgosientsho Ramokgopa says Eskom can't use emergency reserves as they are already over-committed.
The minister and Eskom executives were providing an explanation to the nation.