Mail & Guardian – Eskom may be unable to avert an energy crisis, but South African households and businesses can generate power on their rooftops at a cost per kilowatt that rivals that of megaprojects such as Medupi or Kusile, without subsidies or incentives.

The cost of rooftop solar photovoltaic systems to power residential and commercial buildings has dropped over recent years to reach parity with domestic and commercial tariffs.

According to the Council for Scientific and Industrial Research (CSIR), residential-sized photovoltaic systems are already a cost-competitive alternative to other new-build options, coming in at an estimated 81 cents a kilowatt hour (kWh) versus 80 cents at Medupi or Kusile. This solar power cost includes financing at an interest rate of 9%.