Plug & Play photovoltaic systems are becoming increasingly popular. Because they are not installed systems but consumer products, their regulatory treatment is challenging. The "Plug & Play PV Systems" project aims to address the most important issues relevant to Switzerland. Because this requires many different stakeholders, the project group consists of Meteotest (calculating the potential for Plug & Play PV systems), VSE and BKW (assessing the systems from the grid operator's point of view), ESTI, electrosuisse and VSEK (assessing the safety of Plug & Play systems), as well as the BFH, which is leading the project and answering normatively unresolved safety questions in laboratory tests. The PV industry will be represented in the project by three partners with many years of experience with Plug & Play PV (Energie Genossenschaft Schweiz, hassler energia, Solarblitz). The aim of this project is, on the one hand, to propose pre-normative rules and, on the other hand, to draw up proposals for the regulation of installations from the point of view of VSE, electrosuisse and ESTI, well consulted in the consortium.