An energy saving service offering method and apparatus are provided, in
which a present electric power consumption of a supervised load facility
of a user, who owns the supervised load facility, including a motor, and
who desires to save energy, and inverter control operation data produced
when an inverter has been installed in the supervised load facility and
performing a motor speed control operation are determined. Further, a
merit refund corresponding to saved electric power consumption determined
by referring to a difference between said present electric power
consumption data and the inverter control operation data is calculated.
Finally, a charge and billing operation based on the merit refund under
contract conditions established between a energy saving service provider
and its contractor is performed.
