The City of Cape Town and its residents were mopping up on Sunday after a two-day deluge and very cold weather.
Heavy rain fell from Friday night and strong winds uprooted ancient trees which toppled on to cars.
Many residents scooped water out of their flooded homes and technicians fanned out to fix broken power lines in areas such as Wynberg, Bergvliet, Bonteheuwel and Athlone.
"Prolonged outages should please be expected due to the sheer volume of faults caused by the damaged power infrastructure due to the strong winds and rain," the City warned.
Eskom indicated that it too was working on restoring damaged power infrastructure.