Together with PFALZSOLAR, BASF and the “Technische Universität Kaiserslautern” (Technical University of Kaiserslautern), the Pfalzwerke Netz AG is testing for the first time a large scale energy storage system. The project partners installed a lithium-ion-battery at the solar park Landstuhl, which has been put into operation by Pfalzsolar in 2013. The storage system is located inside a sea freight container and has a capacity of 250 kWp. The system is able to storage up to 230 kilowatthours.