For a secure and reliable power supply based on 100 % renewable energy sources, decentralized and centralized stationary battery storage systems are needed on a large scale. A key task of these storage systems is to keep the power grid stable and fail-safe in the face of fluctuating feed-in from photovoltaics (PV) and wind. In addition, decentralized storage systems in industry and commerce can increase the share of solar self-sufficiency and, in view of the sharp rise in energy market prices, offer potential for economic and ecological savings. Intelligent power electronics and energy management systems optimize the interaction between generators, consumers, storage systems and power grids.
