Ntwaagae Seleka, News24
Residents complained about unending blackouts caused by cable theft, overloading and illegal connections.
They are demanding a new substation away from surrounding informal settlements.
City Power officials at the Lenasia depot were forced to remain inside their offices on Tuesday as Hillside residents in Lenasia South, blocked roads leading to the premises demanding electricity.
Residents have complained about power blackouts in the area and have accused City Power of not communicating with them.
They took to the streets on Tuesday and blocked roads with burning tyres and other objects as they marched to City Power offices.
City Power spokesperson Isaac Mangena said protesters made it difficult for officials to respond to outages from the Lenasia depot.