SOFC (solid oxide fuel cell) is a very promising technology that achieves high power generation efficiency, while being very nearly usable. It is high time we considered enhancing commercialization and dissemination of SOFC by setting a standard for the evaluation method of SOFC cell/stack performance. In setting the standard, it is neither appropriate to describe the specific content or form of the test object, nor appropriate to unify the test conditions, because each type of SOFC has been developed for a different application owing to the diversity of SOFC. On the other hand, uncertainty evaluation of the test results has been introduced to ensure reliability. In setting a standard for the SOFC performance test, it is necessary that the method for uncertainty evaluation be specifically described in the text, because the performance of SOFC depends on many parameters. This report describes the approaches we have taken in order to set the international standard of the SOFC test method and to evaluate the uncertainty of the test results.
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