This model is about using geothermal power as a brine heater (steam source) for evaporation via direct vapor generation through the geothermal field. Flash evaporation tank has been used to generate steam from the heated brine via the geothermal well. The brine content from the flash tank has been considered as a blowdown. Condenser unit is used for condensation process. Seawater or saline water will be pumped directly to the geothermal well. Free salt steam will be directly goes towards the condenser unit for condensation and fresh water production.