Abstract: The invention relates to a system for solid-state electricity storage and solid-state electricity generation that allows electricity to be stored when the renewable energy sources produce excess electricity and electricity to be generated when the electricity demand on the market exceeds the electricity production from renewable energy sources. The system comprises a solid-state electricity storage device having a first electrolysis device for producing chlorine from a melt of zinc chloride and solid zinc, a second electrolysis device for producing hydrogen from water, a first reactor for producing hydrogen chloride, and a vessel with a water sprayer for producing hydrochloric acid. The system further comprises a solid-state electricity generation device having a second reactor for reacting zinc and hydrochloric acid to produce hydrogen and a fuel cell for generating electricity.