-10 kW CHP stationary fuel cell systems and to comment on the achievability of cost, efficiency, and durability targets. The Independent Review Panel evaluated the three independent fuel cell technologies that are being developed to address the market needs of 1-10 kW CHP stationary systems: low-temperature proton exchange membrane (LT-PEM) fuel cell systems operating, for the most part, in a temperature range of 60°-90°C; high temperature PEM (HT-PEM) fuel cell systems operating in a temperature range of 130°-180°C; and solid oxide fuel cell (SOFC) systems operating in a temperature range of 550°-1,000°C.Stakeholder claims regarding the current status for efficiency, cost, and durability varied widely within each of these three technologies. DOE reports the 2008 status of electrical efficiency, CHP efficiency, and durability at 34%, 80%, and 6,000 hours, respectively (see Table 2). Those values are representative of or even on the low end of demonstrated results. On the other hand, the stakeholders claimed that the reported 2008 status for factory cost ($750/kW) is low, especially for the low end of the 1-10 kW range.
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