Scores of people joined the DA march to the ANC headquarters in central Johannesburg, Luthuli House, on Wednesday.
The ANC Youth League said it would “protect” the party’s headquarters against the marchers.
South Africa has been facing a power crisis in recent years, primarily due to a lack of investment in new power generation capacity and maintenance issues at existing power plants.
The state-owned utility company, Eskom, has struggled to meet the country’s growing electricity demand and has implemented rolling blackouts, known as “load shedding,” to manage the limited supply of power.
The government has been working to address the crisis by implementing a number of measures, such as investing in renewable energy and increasing the use of independent power producers, but the problem remains ongoing.
South Africa faces at least two more years of persistent blackouts as the country’s state-owned power company recently overhauled its ageing coal-fired plants.
The crisis is viewed as a political threat to the ANC ahead of the general elections scheduled for 2024.