TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Method: The method also includes producing thermal energy exhaust as a byproduct of generating electricity with the fuel cell; heating the salinous water with the thermal energy exhaust to produce heated salinous water; and producing fresh water from the heated salinous water. It preferably includes introducing the thermal energy exhaust into a heat exchanger (140); introducing the salinous water into the heat exchanger; and heating the salinous water in the heat exchanger. It additionally comprises producing steam from the salinous water and condensing the steam to produce the fresh water; or introducing the heated salinous water into a distillation chamber, producing steam in the distillation chamber, and condensing the steam in the distillation chamber to produce the fresh water. The heated salinous water is introduced into a reverse osmosis system. A salinous water-feed line (132) extends through the distillation chamber. The steam is condensed using the salinous water-feed line. A portion of the generated electricity powers the multi-stage flash desalination or the reverse osmosis system. During a first predetermined period, the thermal energy exhaust heats the salinous water. During a second predetermined period, the thermal energy exhaust generates additional electricity. The fuel cell produces electricity by electrochemical reaction. Preferred Component: The fuel cell comprises an electrolyte layer between two porous electrodes. One of the electrodes is an anode. The other electrode is a cathode. The fuel cell is proton exchange membrane fuel cells, alkaline fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, and/or solid oxide fuel cells. The hybrid system additionally comprises the heat exchanger connected to the fuel cell to receive the thermal energy exhaust, and the salinous water feed line in combination with the heat exchanger. The salinous water-feed line is adapted to transfer unheated salinous water to the heat exchanger and to transfer heated salinous water from the heat exchanger. The desalination system is connected to the salinous water-feed line, and adapted to remove salt or brine from the heated salinous water. It is electrodialysis desalination systems, reverse osmosis desalination systems, multi-effect distillation desalination systems, mechanical vapor compression desalination systems, thermal vapor compression desalination systems, multi-stage flash desalination systems, and/or humidification-dehumidification desalination systems. It comprises the reverse osmosis system, and the flash distillation system.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The fuel is hydrogen and/or hydrocarbons; or natural gas, diesel fuel, methanol, and/or ethanol. The hydrogen is produced by hydrocarbon fuel by one of internal reforming and external reforming.