In this article, South African Photovoltaic Industry Association (SAPVIA) technical and policy manager Sim Khuluse writes that South Africa’s solar PV sector has entered a pivotal execution phase, with installed capacity now exceeding 10.2 GW and a strong pipeline of utility‑scale projects approaching commercial operation; however, without urgent grid modernisation and clear market rules ahead of the South African Wholesale Electricity Market’s launch, the sector’s current investment momentum could be at risk.