NOVELTY - A system consists of vessel (4) for electrolyzing alkali/alkaline-earth metal halide salt (3) to produce metallic alkali/alkaline-earth metal (17) and halogen gas (18), halogenation reactor (8) for producing silicon tetrahalide and trihalosilane, disproportionation system for producing monohalosilane or dihalosilane from silicon tetrahalide and trihalosilane, hydride reactor (9) for reacting metallic alkali/alkaline-earth metal and hydrogen, and silane reactor (30) for reacting halogenated silicon feed gas (21) with the alkali/alkaline-earth metal hydride (32).    USE - System is used for producing silane used for deposition of epitaxial silicon layer on semiconductor wafers and production of polycrystalline silicon used for integrated circuits and solar cell.    ADVANTAGE - The system enables economical and energy efficient production of silane.    DETAILED DESCRIPTION - A system consists of vessel for electrolyzing alkali/alkaline-earth metal halide salt to produce metallic alkali/alkaline-earth metal and halogen gas, halogenation reactor for producing silicon tetrahalide and trihalosilane by reacting silicon with halogen gas discharged from the vessel and hydrogen halide produced by contacting halogen gas discharged from the vessel with hydrogen, disproportionation system for producing monohalosilane or dihalosilane from silicon tetrahalide and trihalosilane to produce halogenated silicon feed gas consisting of halosilanes, hydride reactor for reacting metallic alkali/alkaline-earth metal discharged from the vessel and hydrogen to produce alkali/alkaline-earth metal hydride, and silane reactor for reacting halogenated silicon feed gas with the alkali/alkaline-earth metal hydride to produce silane and alkali/alkaline-earth metal halide salt.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of production of silane.    Halide salt (3)    Vessel (4)    Halogenation reactor (8)    Hydride reactor (9)    Alkali/alkaline-earth metal (17)    Halogen gas (18)    Halogenated silicon feed gas (21)    Silane reactor (30)    Hydrogen (31)