REDOX FLOW BATTERY

A redox flow battery according to an exemplary embodiment of the present invention includes: a module which is formed by disposing unit modules, which include unit stacks for generating electric current, at lateral sides with respect to each other and electrically connecting the unit modules; electrolyte tanks which supply an electrolyte to the module and store the electrolyte discharged from the module; electrolyte inflow lines which connect the electrolyte tanks and the module and introduce the electrolyte into the module by an operation of an electrolyte pump; and electrolyte outflow lines which connect the electrolyte tanks and the module and discharge the electrolyte from the module, in which the electrolyte inflow lines are connected to a lateral side of the module at a height equal to or lower than a height of an uppermost portion of the unit module.