Compactor device system (22, 24) comprising a compacting tool; a first driving means; a first unbalanced mass rotatable by the first driving means at a first rotation frequency (w 1); a second driving means; a second unbalanced mass rotatable by the second driving means at a second rotation frequency (w 2); wherein each of the first and second unbalanced mass (32; 36), when rotated by the respective driving means, is adapted to apply a respective oscillating force on the compacting tool; a control unit adapted to control the first rotation frequency (w 1) and the second rotation frequency (w 2), such that the first rotation frequency (w 1) equals the second rotation frequency (w 2);and further adapted to control a relative phase between a rotation of the first unbalanced mass and a rotation of the second unbalanced mass; wherein the control unit is further adapted to drive the compactor device system (22, 24) in a compacting mode by setting the relative phase to such a value, that forces created by rotation of the first unbalanced mass and forces created by rotation of the second unbalanced mass both contribute to a compacting action of the compacting tool; characterized in that the compactor device system (22, 24) has a recuperation arrangement which is adapted to operate the first unbalanced mass and the second unbalanced mass as a flywheel energy storage in at least one operation mode of the compactor device system, wherein the flywheel energy storage is adapted to store a rotational energy of the rotating first unbalanced mass and a rotational energy of the second rotating unbalanced mass, wherein the recuperation arrangement which is further adapted to store energy generated by regenerative braking in the flywheel energy storage and to withdraw energy stored in the flywheel energy storage for driving or supporting at least one function of the compactor device system (22, 24). a compacting tool; a first driving means; a first unbalanced mass rotatable by the first driving means at a first rotation frequency (w 1); a second driving means; a second unbalanced mass rotatable by the second driving means at a second rotation frequency (w 2); wherein each of the first and second unbalanced mass (32; 36), when rotated by the respective driving means, is adapted to apply a respective oscillating force on the compacting tool; a control unit adapted to control the first rotation frequency (w 1) and the second rotation frequency (w 2), such that the first rotation frequency (w 1) equals the second rotation frequency (w 2);and further adapted to control a relative phase between a rotation of the first unbalanced mass and a rotation of the second unbalanced mass; wherein the control unit is further adapted to drive the compactor device system (22, 24) in a compacting mode by setting the relative phase to such a value, that forces created by rotation of the first unbalanced mass and forces created by rotation of the second unbalanced mass both contribute to a compacting action of the compacting tool; characterized in that the compactor device system (22, 24) has a recuperation arrangement which is adapted to operate the first unbalanced mass and the second unbalanced mass as a flywheel energy storage in at least one operation mode of the compactor device system, wherein the flywheel energy storage is adapted to store a rotational energy of the rotating first unbalanced mass and a rotational energy of the second rotating unbalanced mass, wherein the recuperation arrangement which is further adapted to store energy generated by regenerative braking in the flywheel energy storage and to withdraw energy stored in the flywheel energy storage for driving or supporting at least one function of the compactor device system (22, 24).