Ledjeff, KonstantinKonstantinLedjeff2022-03-082022-03-081988https://publica.fraunhofer.de/handle/publica/315361Photovoltaic systems are operated with or without energy storage depending on the applications and the requirements of the loads. There are numerous ways to store energy but in nearly all systems electrochemical lead-acid batteries are installed. Hydrogen can be used as active materials in electrochemical storage units in combination with various oxidizers, such as PbO. NiOOH, Br2, O2 (air). Some of the most advanced storage systems will be presented in detail. (ISE)de621697conference paper