Energy grid impedes excess power transmission

South Africa’s current electricity transmission grid is generally constrained in the Cape provinces and unable to facilitate the connection of new utility-scale generation including that from solar photovoltaic (PV) and wind, says wind and solar energy facility developer JUWI Renewable Energies. Historically, the majority of South Africa’s electricity supply was provided by coal power stations, the majority located in Mpumalanga, with the power transmitted to the major load centres including those in the Cape. The national transmission grid is still set up in this way, despite the introduction of large-scale renewables, as the cost and time to upgrade this infrastructure is onerous.