The power utility is using the summer months to catch up on much-needed maintenance.
The utility is warning SA to reduce their electricity usage by at least 10 percent.
Constraints on electricity supply are expected to ease by the weekend.
An energy expert says the situation is far worst than the public is being led to believe.
Members of the public have been urged to use electricity sparingly during the evening peak.
The energy giant announced yesterday that generating reserves are almost stretched to their limits.