A harvester (20) may include a reciprocating member (28) to engage a crop, an electrical generator (32) to convert reciprocating motion of the reciprocating member (28) into electrical energy and an electrical storage unit (36) storing the electrical energy. The harvester (120) may include a first movable member to engage a crop, an electrical generator (32) at least partially carried by the first movable member to generate electrical energy from movement of the first movable member, a second movable member (152) carried by the first movable member and an actuator (146) to drive movement of the second movable member using the electrical energy.
