METHOD AND SYSTEM FOR OPERATING AN ELECTRICAL GRID

A method and system for operating an isolated AC grid with a fluctuating source of electric power (FSEP) generated from renewable energy, and with a fluctuating AC power demand (FACPD). A selectively driven alternator is couplable to an IC engine fueled from a hydrogen tank. A hydrogen generator is powered by the FSEP. The method includes powering the hydrogen generator from the FESP when actual electric power generated by the FSEP exceeds FACPD and simultaneously the tank has storage capacity, storing the generated hydrogen in the tank and generating AC power with the SDA by combusting hydrogen from the tank in the IC engine when actual electric power generated by the FSEP is less than the FACPD, and the amount of hydrogen in the tank is above a hydrogen amount threshold.