A power conditioner system includes a power-generation power conditioner 30 for connecting a power generation equipment 11 to a grid 12 and a power-storage power conditioner 50 for connecting a power storage equipment 13 to the grid 12, wherein the power conditioner 30 includes an independent-power-generation output unit 34 for outputting, separately from power supply to the grid 12, power based on power of the power generation equipment 11, and the power conditioner 50 includes an independent-power-storage output unit 54 for outputting, separately from power supply to the grid 12, power based on power in the power storage equipment 13. The power conditioner 50 supplies at least one of AC power based on the output of the independent-power-generation output unit 34, AC power based on the output of the independent-power-storage output unit 54, and system power of the grid 12, to an independent output system 62 having a predetermined load.