Molten salt once-through steam generator

An advanced molten salt once-through steam generator system functional on hot molten salt supplied via a supply line. The system includes a steam generator, a feedwater supply line, at least one high pressure heaters and a separator. The molten salt is supplied the steam generator, which includes at least one economizer, an evaporator, and a superheater to utilize the heat of the molten salt flowing from the superheater to economizer to generate steam. The feedwater line supplies the feedwater to the steam generator, flowing from the economizer to the superheater to be converted into steam by the hot molten salt. The heaters are arranged in series in the feedwater line to heat the feedwater up to required temperature. The separator enables separation of the water and steam.