The feasibility of direct utilization of bamboo biochar (BC) as a fuel for solid oxide fuel cells (SOFCs) is studied by comparing BC to de-ashed BC (DC) and activated BC (AC) in terms of Boudouard reactivity and the performance of the fuel cell. The CO partial pressures in the carbon dioxide temperature-programmed oxidation profiles of BC and DC are 3.18 X 10(-8) and 1.04 X 10(-8) Ton at 850 degrees C, respectively, which indicates that BC has superior Boudouard reactivity compared to DC. The peak power densities (PPDs) of the cells fueled with BC and DC are 121 and 73 mW cm(-2) at 850 degrees C, respectively. The inherent metal elements in BC, mainly K of 33.88 mg g(-1) and Ca of 2.06 mg g(-1), play a key role in boosting its Boudouard reactivity and the performance of the cell. In addition, the loading of artificial catalysts to BC can noticeably enhance its Boudouard reactivity and gain a higher power output of the cell fed with it. The PPD of catalyst-loaded BC achieves approximately 191 mW cm(-2) at 850 degrees C. This study reveals that BC is a promising carbon-neutral fuel for SOFCs and provides an efficient alternative to use this renewable resource in sustainable power generation.