Results from planar SOFCs operated on hot cleaned gas derived from two experimental gasification facilities - Hofmann, Ph; Schweiger, A; Fryda, Lydia Emilie; Panopoulos, Kyriakos D.; Hohenwarter, Ulrich; Ouweltjes, Jan Pieter; Karl, Jürgen; Kakaras, Emmanuel C. (15th European Biomass Conference and Exhibition - Proceedings, 2007)