Fuel-cell installation and method for a fuel-cell installation

Fuel cell plant (1) with a fuel cell system (12), comprising a plurality of fuel cell stacks (10), wherein, in order to supply an electrical output network (24) with electrical energy generated by the operation of the fuel cell stacks (10), the fuel cell system (12) is or can be connected electrically with an electrical output network system (20) which comprises an electrical output network (24), wherein the fuel cell plant (1) further comprises an electrical power resistor network (50) comprising an electrical power resistor (52) to secure the load point of the fuel cell stacks (10) in the event of a fault, in particular a mains supply fault (104) of the electrical output network system (20), wherein, in order to supply the electrical power resistor network (50) with electrical energy generated by the operation of the fuel cell stacks (10), the fuel cell system (12) is connected electrically to the electrical power resistor network (50), wherein the electrical power resistor network (50) is arranged in an electrical intermediate circuit (40) between DC/DC converters (14) of the fuel cell stacks (10) and a DC/AC converter (22) of the electrical output network system (20), wherein the DC/AC converter (22) is bidirectional and is connected to the electrical output network (24), so that electrical energy from the electrical intermediate circuit (40) can be dissipated to the electrical output network (24) and fed from the electrical output network (24) into the electrical intermediate circuit (40).