The present invention is a power system using a reformer/fuel cell
arrangement as the primary source of DC power. The reformer is operated
on either natural gas or propane. A backup source of power consumes
hydrogen which is diffused from a solid medium. On an as-needed basis,
the medium is reacted to release hydrogen gas which is consumed by a fuel
cell to generate backup DC power. The system also includes
Lithium-Metal-Polymer batteries which are used for both bridging and
backup purposes.