stack voltages must be reduced to achieve the intermediate power levels the system can easily be scaled to provide more output power by increasing the number and capacity of the power system modules 2 each of the three power system modules 2 shown in fig1 may be operated independently of the other modules the basic arrangement of the key system components is shown in fig1 while this particular description of one embodiment of the present invention includes these parameters it is to be distinctly understood that the invention is not limited thereto but may be variously configured according to the needs and necessities of a user referring now to fig1 a view of a first embodiment of the present invention is shown fig1 shows modules 2 that each include at least one sofc stack 4 preferably there are a plurality of sofc stacks 4 in each module for example in this module 2 there are three sofc stacks 4 in the preferred embodiment of the invention a series of three smaller stacks 4 are employed thus each of the three power modules 2 contain three fuel cell stacks 4 for a total of nine sofc stacks in the system these three sofc stacks 4 are used in each module 2 with the addition of fuel downstream of each module 2 in three separate stages in this u201c 3 stage fuel addition u201d approach fuel is metered into the anode gas immediately downstream of each stack 4 and the resulting gas is reacted adiabatically in an adiabatic steam reformer 8 over a suitable catalyst o form a mixture of hydrogen carbon monoxide methane and steam this gas mixture then.