NOVELTY - Operating a fuel cell system during an interruption comprises: (a) identifying a load interruption where an external load is partially or fully unable to draw electrical power from the fuel cell system; (b) operating a first fuel cell column of the system in an electrolysis mode so that the first fuel cell column generates fuel during the load interruption; and (c) providing power to the first fuel cell column operating in the electrolysis mode from a second fuel cell column of the system, where the second fuel cell column operates in a normal power generation operating mode.    USE - The method and systems are useful for operating a fuel cell system during an interruption (all claimed).    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) a fuel cell system comprising: (a) fuel cell columns; and (b) a power control system in communication with the fuel cell columns, where the power control system is configured to: identify a load interruption in which an external load is partially or fully unable to draw electrical power from the fuel cell system; operate a first fuel cell column of the fuel cell columns of the fuel cell system in an electrolysis mode such that the first fuel cell column generates fuel during the load interruption; and provide power to the first fuel cell column operating in the electrolysis mode from a second fuel cell column of the fuel cell columns of the fuel cell system, where the second fuel cell column operates in a normal power generation operating mode; and    (2) a tangible computer-readable medium having computer-executable instructions stored on it which, upon execution, cause a power control system of a fuel cell system to: (a) identify a load interruption in which an external load is partially or fully unable to draw electrical power from the fuel cell system; (b) operate a first fuel cell column of the fuel cell system in an electrolysis mode such that the first fuel cell column generates fuel during the load interruption; and (c) provide power to the first fuel cell column operating in the electrolysis mode from a second fuel cell column of the fuel cell system, where the second fuel cell column operates in a normal power generation operating mode.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram for operating a fuel cell system during an interruption.    Identify (300)    Determine (305)    Determine (310)    Place (315)