An exhaust gas treatment using dielectric barrier discharges hasbeen developed in order to increase the energy efficiency of NO removal.The effect of electrode shape on NO removal in a barrier discharge plasmawas investigated experimentally. The electrode shapes (multi-point-to-planeand plane-to-plane) were compared to provide information on the performanceof the gas treatment. The experimental result shows that themulti-point-to-plane electrode is more effective than the plane-to-plane one atlow energy and low operating voltage. With a flow rate of 5 l min-1,the power requirement to remove 200 ppm NO is 24 W using themulti-point-to-plane electrodes, while it is 177 W using the plane-to-planeelectrode. The average power requirement for NOx removal can be reducedto ~20% by using multi-point-to-plane electrodes.