Mediatorless cellulose-fed microbial fuel cell (MFC) is a bioelectrochemical system that converts cellulose into energy through cellulose-hydrolyzing and electrogenic activity of bacteria. In the paper it has been presented that Enterobacter cloacae isolated from termite gut exhibited both cellulose-degrading and exoelectrogenic activities that make it a valuable strain to be used in a cellulose-fed MFC. The maximum power and current densities obtained from the cellulose-fed MFC were 185 mW/m(2) and 2.4 A/m(2), respectively. SEM micrographs of the anode showed that E. cloacae formed an expanded fibria system bounding bacteria cells into network attached to the electrode surface. (C) 2015 Elsevier Ltd. All rights reserved.