an energy harvester having a plurality of bimorph beams and a plurality of piezoelectric devices , wherein at least two of the piezoelectric devices are mounted to each of the plurality of bimorph beams . a plurality of rigid beams interconnect adjacent ends of the bimorph beams to define a stacked , fan - folded shape having a first end of one of the bimorph beams mounted to a structure . a tip mass is disposed on a free end of another of the plurality of bimorph beams . upon movement of the energy harvester , the plurality of bimorph beams is caused to deflect and thereby output electrical power from the plurality of piezoelectric devices .