NOVELTY - The system has a primary power supply (102) operating using natural gas and propane sources. A reformer extracts hydrogen contained in fuel in the sources and supplies the fuel to one of fuel cells. Valves are provided for switching between the fuel cells to cause the hydrogen to be consumed by only one of the cells at a time. The fuel cells provide DC outputs which are received into an electrical line connected to a DC bus, where the bus is connected to a base transceiver station. Capacitors (138) are provided for maintaining constant power during the failure of the power supply.    USE - Used for providing DC power to a telecommunications equipment, and for a base transceiver station (BTS) of a cellular base station for transmission and receiving of voice and data.    ADVANTAGE - The system is completely untied to any physically connected utility, thus allowing the system to be used to offer cell service to locations and people who have never had access to cell service before. The utilization of the propane source frees the cell towers from geographic bondage caused by the need for utility connectivity. The system provides efficient, reliable power in remote locations without significantly affecting the surrounding environments. The capacitors require less space, do not produce harmful and corrosive gases and present any significant ecological problems, thus providing safety to people. The capacitors do not require ventilation, eliminate the need for replacement and are suitable for extreme hot/cold environments which are typical in remote geographic areas. The fuel cells provide the DC outputs which are received into the electrical line connected into the DC bus, thus preventing the loss of power in the base transceiver station, even temporarily, and avoiding damaging of customer relations.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method of providing electrical power to a power consuming device.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of components of a power system.    Primary power supply (102)    Backup power supply (104)    Fuel cell (114)    Spare fuel cell (116)    Valves (118, 120)    Capacitors (138)    DC power output (144)