This lecture discusses the challenges of integrating photovoltaic (PV) systems into the grid, presenting a tool developed as a plugin for PowerFactory that calculates the hosting capacity of PV. By gradually increasing PV on the network, the tool fine-tunes the integration until power quality issues arise, providing a rapid and accurate assessment. Advanced planning techniques and control technologies can significantly increase the PV capacity, with the plugin offering a free and open-source solution for optimizing PV integration.