The Nelson Mandela Bay Municipality says Stage 1 loadshedding was implemented at 9 am on Saturday, and it would continue until 10 o'clock on Saturday evening.
On Friday night, Eskom said the load-shedding prognosis for the weekend was medium to high, dependent on the performance of its power plants.
Meanwhile, the SA Chamber of Commerce and Industry says Eskom's downgrade to junk status by Standard and Poor's is of grave concern.
Sacci says the potential for the enterprise to raise the additional R50-billion that it requires, in addition to the original plan to raise R200-billion at a reasonable interest rate, is significantly reduced by the downgrade.
The Chamber says despite National Treasury’s promised R20 billion injection, Eskom still faces considerable challenges.
Ratings agency S&P downgraded Eskom's long-term credit rating on Thursday to BB+, following the suspension of four of its senior officials.
In recent months, Eskom has battled to keep the lights on since the collapse of one of its coal storage silos, diesel shortages, and maintenance issues.