def METHOD_NAME(self):
    """
    Retrieves current energy supplied by PSU
    Returns:
        A float number, the power in watts, e.g. 302.6
    """
    val = self.__read_txt_file(self.hwmon_path + "psu_p_out")
    if val is not None:
        return float(val)/1000
    else:
        return 0