JOHANNESBURG - Democratic Alliance Interim leader, John Steenhuisen, says Eskom is unreliable and holding the country to ransom.
The DA is picketing outside Eskom's Megawatt Park, in protest against the ongoing load-shedding.
The party wants innovations implemented to rescue the struggling utility.
It has also called on President Cyril Ramaphosa to cancel his working visit to Egypt and address parliament on the crisis.
"We cannot rely on these guys (Eskom) we are being held to ransom because they are the sole supplier in South Africa. Competition drives down costs and brings greater efficiency. State-owned entities and the big fist of the state have failed the people of South Africa. We need new ideas and a new way forward."
Stage 6 load-shedding was implemented for the first time on Monday.
The power utility again implemented stage 4 on Tuesday.
Meanwhile, Public Enterprises Minister Pravin Gordhan says the electricity crisis is manageable.
Eskom has been struggling to keep the lights on since heavy rains started last week.
Ramaphosa says all stakeholders need to work together to end the crisis.
He's also urged Gordhan and Eskom to continue giving regular updates.