Photovoltaic (PV) storage-systems play a more and more important role in the energy system, especially in private households. Not only can they be used to increase self-consumption but they can provide ancillary services like voltage control and balancing energy or being used for peak-shaving. It can be tricky to use private PV-storage-systems for the latter because this could mean economic losses due to reduced self-consumption or there might be acceptance problems. Therefore, we carried out an empirical investigation to analyze acceptance issues and willingness to invest in PV-storage-systems.