A power generation control system which includes: a fuel cell (201); a
target power provider (101) for the fuel cell (201); a operation status
monitoring system (102) for monitoring output power from the fuel cell
(201), in which the detected output power includes actual output voltage
(AV) of the fuel cell (201); and a controller (214). The controller (214)
includes: a target current computing unit (104) which calculates a target
current (TI) from the target power (TPW) given by the target power
provider (101), based on PW-I characteristic obtained from I-V
characteristic of the fuel cell (201); and a command output power
computing unit (106) which calculates a command output power (CPW) of the
fuel cell (201) based on the target current (TI) and the actual output
voltage (AV).