Hi, Where "hot rocks" are available as a source of geothermal power, and these are situated near the coast, salt water could be used as the water source. This would produce steam to drive turbines, which could then also be condensed into fresh water. In short rather than be an additional burden on fresh water supplies, the geothermal power source would be an added source of fresh water. Of course this would result in salt being deposited deep underground in hot rock layers, so study would be required to ensure that this salt wouldn't end up contaminating existing fresh water aquifers.
Regards, Robin van Spaandonk http://users.bigpond.net.au/rvanspaa/ Competition provides the motivation, Cooperation provides the means.
