NOVELTY - The hydrogen supply apparatus (3) has hydrogen storage cartridge, retainer (31), controller (33), and sensor. The retainer has heating apparatuses (C1-Cn) which receive supply of electric power and heat the cartridge. The controller controls supply of electric power to heating apparatuses. The physical quantity for calculating feed rate of hydrogen is detected, and detected value is input to the controller by the sensor.    USE - For energy supply systems (claimed).    ADVANTAGE - The hydrogen supply apparatus supplies hydrogen and energy with high efficiency, decreasing the loss of energy used by hydrogen desorption. The apparatus has a simple design. The waste heat of the energy generation apparatus is utilized for discharge of hydrogen. Since the hydrogen storage container generates heat, hydrogen is supplied with high efficiency even when the hydrogen storage component is an insulator. The electric power is not consumed in the hydrogen container since the container material has a small value with respect to the product of volume resistivity and relative magnetic permeability.    DETAILED DESCRIPTION - The hydrogen supply apparatus (3) has a hydrogen storage cartridge, a retainer (31), a controller (33), and a sensor. The retainer has heating apparatuses (C1-Cn) which receive supply of electric power and heat the hydrogen storage cartridge. The controller controls the supply of electric power to the heating apparatuses. The physical quantity for calculating feed rate of hydrogen is detected, and the detected value is input to the controller by the sensor. The controller ascertains the supply state of hydrogen. The heating conditions for discharging hydrogen from the cartridge are controlled by changing the heating region. INDEPENDENT CLAIMS are included for the following:    (1) energy supply system; and    (2) hydrogen storage cartridge.    DESCRIPTION OF DRAWING(S) - The figure shows the block diagram of the hydrogen supply apparatus. (Drawing includes non-English language text).    hydrogen supply apparatus (3)    hydrogen circulation pipe (4)    retainer (31)    controller (33)    heating apparatuses (C1-Cn)