A Dielectric Barrier Discharge Plasma Generation Cell (DBDPGC) includes a plurality of hot electrodes interspersed with a plurality of ground electrodes whereby a power supply connected between the hot and ground electrodes creates a non-thermal plasma between the electrodes. The hot electrodes are hermetically sealed. A cleaning solution is applied to the electrodes to wash gas stream contaminants and/or reaction by products off the electrodes at times during operation of the cell when desired to clean the electrodes to maintain cell efficiency. A catalyst solution can be applied to the electrodes after cleaning. Where a plurality of cells are electrically connected in parallel, shorts in a cell can be detected by sensing the difference in currents feed to each of the plurality of cells.