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A power system, comprising: a primary power source in electrical communication with a bus and a bridging power source, wherein the bridging power source comprises at least one of a capacitor, a battery, and an electrolysis cell, and the bridging power source is in electrical communication with the b

A power system, comprising: a primary power source in electrical communication with a bus and a bridging power source, wherein the bridging power source comprises at least one of a capacitor, a battery, and an electrolysis cell, and the bridging power source is in electrical communication with the bus; and a secondary power source in electrical communication with the bus. A method for operating a power system, comprising: monitoring a primary power source; if the primary power source exhibits selected characteristics, directing power from a bridging power source to a bus and initiating a secondary power source, and the bridging power source comprises at least one of a capacitor, a battery, and an electrolysis cell; and unless the secondary power source exhibits the selected characteristics, powering the bus with the secondary power source and ceasing the directing power from the bridging power source.

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The invention claimed is: 1. A system for providing back-up power to a load powered by a primary power source, the system comprising: a fuel cell arrangement for generating back-up power for the load; a bridging power source for generating bridge power for the load, wherein the bridging power sourc

The invention claimed is: 1. A system for providing back-up power to a load powered by a primary power source, the system comprising: a fuel cell arrangement for generating back-up power for the load; a bridging power source for generating bridge power for the load, wherein the bridging power source comprises a capacitor; and a controller in operable communication with the fuel cell arrangement and the bridging power source, the controller adapted to initiate application of the bridge power to the load upon detecting a deterioration of power from the primary power source, the controller adapted to initiate application of the back-up power to the load upon detecting a power capability of the back-up power to power the load. 2. The system of claim 1 wherein the capacitor has a capacitance of about 1,000 μF to about 7,700 μF. 3. The system of claim 1 wherein the capacitor exhibit a voltage about 5 times to about 10 times a voltage of said bus. 4. The system of claim 1 wherein the capacitor further has a voltage of greater than or equal to about 250 volts. 5. The system of claim 1 further comprising: a converter coupled between the primary power source and the load, the converter for converting power from the primary power source to power anticipated by the load. 6. The system of claim 5 wherein the converter comprises a rectifier to convert AC power from the primary power source to DC power for the load. 7. The system of claim 1 wherein the fuel cell arrangement comprises a regenerative fuel cell arrangement. 8. The system of claim 7 wherein the regenerative fuel cell arrangement comprises: a fuel cell for generating the back-up power; a hydrogen storage device in communication with the fuel cell for providing hydrogen thereto; and an electrolysis cell in communication with the hydrogen storage device, the electrolysis cell for generating hydrogen to be stored at the hydrogen storage device. 9. The system of claim 8 wherein the bridging power source comprises the electrolysis cell. 10. The system of claim 8 wherein the electrolysis cell is in communication with the primary power source to power the electrolysis cell. 11. The system of claim 1 wherein the bridging power source comprises a battery. 12. A method for providing back-up power to a load powered by a primary power source, the method comprising: generating back-up power for the load from a fuel cell arrangement; generating bridge power for the load from a bridging power source, wherein the bridging power source comprises a capacitor; initiating application of the bridge power to the load upon detecting a deterioration of power from the primary power source; and initiating application of the back-up power to the load upon detecting a power capability of the back-up power to power the load. 13. The method of claim 12 further comprising: converting power from the primary power source to power anticipated by the load. 14. The method of claim 13 wherein the converting power comprises converting AC power from the primary power source to DC power for the load.