Solid oxide fuel cells (SOFCs), converting chemical energy into electricity at elevated temperature directly, are omitted mechanical moving parts and lessen noise generated, with higher electrical efficiencies i.e.40~60％ and total efficiencies (over 80％) compared to traditional internal combustion engines, power plants, and other kinds of fuel cell. The working scopes of SOFC technology include powder, cell, stack and system developments, and that technology is called simply a from-powder-to-power technique. Each of the working items can be broken down. Powder technology is focusing on developing the composition and manufacturing processes of the nano-scale powders for catalyst, anode, cathode and electrolyte; SOFC cell technology is highlighted on the fabricating and sintering processes of cell, as well as the performance and durability behavior of cell and testing ability; SOFC stack technology is interesting in the development of sealing material, interconnect material, contact layer, protective layer, assembling processes and stack performance testing competence; SOFC system technology is concerned about system layout, balance of plant(BOP), and system components that separate into hot zone ones, consisting of burner, reformer, and heat exchangers, as well as cold zone ones, comprising water control and recycling system, power conditioning system, thermal and pressure sensors, and the hardware related to main control program. By way of successfully developing the upper stream, middle stream and lower steam technologies of SOFC, it is promising to create a new green energy industry in Taiwan.