TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The method further involves pre-treating the non-fresh water. The pre-treatment step involves removing from the non-fresh water where the non-water materials component selected from organics, algae and particulate such as sand, waste material, oil residues, metals and other impurities. The method further involves pre-heating the treated non-fresh water prior to step (a); (h) removing the non-water materials such as salts and minerals, metals prior to step (a); selling the non-water materials recovered in step (h). The recovery of heat in step (e) uses a high temperature heat exchanger process. In the step (g), elevating the treated non-fresh water to a temperature sufficient to create steam and supplying the steam for step (a). The method further involves the step of using at least some of the recovered heat of step (e) for step (g); the step of using at least some of the recovered heat of step (e); the step of supplying energy for step (a) at least partially from an external source. The method further involves removing part of the generated hydrogen gas and oxygen gas of step (a) where the removed hydrogen and oxygen are not used in step (c); selling at least some of the removed hydrogen gas and oxygen gas. The method further involves (i) removing part of the heat recovered from the collector of step (e) where the removed heat is not used in step (a); (j) using some of the recovered heat as an energy input for another process; (k) diluting the non-fresh water of step (a). The process in step (j) is the production of electricity. The production of electricity includes using the heat of step (i) to heat water to create steam to run a steam turbine. The method further involves supplying additional hydrogen gas and oxygen gas for step (b) from a source other than the high temperature electrolysis of step (a). The step (k) involves adding fresh water to the non-fresh water. The fresh water added in step (k) is obtained from the condensed water of step (e). The method further involves extracting heat from the cooling and compression of the hydrogen gas and oxygen gas. The step of using the extracted heat as energy input in another process. The another process is selected from industrial processes consisting of a process of adding additional heat to step (f) an electricity generation process, and a drying process. The method further involves selling and using at least some of the electricity produced by the electricity generation process. The high temperature electrolysis of step (a) is carried out at a temperature of 1000 (preferably 850) degrees C to just below thermolysis. The high temperature electrolysis of step (a) is carried out at a temperature of 100 to just below 850 degrees C. The removing of gases other than hydrogen and oxygen generated by the high temperature electrolysis process. The selling of the recovered gases other than hydrogen and oxygen generated by the high temperature electrolysis process. Preferred Components: The external source of energy is selected from solar energy, wind energy, nuclear energy, fossil fuel energy, and geothermal energy. The hydrogen gas compressor is adapted to operate under elevated pressure and elevated temperature. The storage tank is adapted to store the hydrogen gas under elevated pressure. The second compressor is adapted to operate under elevated pressure and elevated temperature. The storage tank is adapted to store the oxygen gas under elevated pressure. The combustor comprises refractory material. The thickness of wall of the collector is tapered along its length. The collector is adapted to operate under elevated pressure and elevated temperature. The industrial process is an electricity generating unit.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred System: The system further comprises a high temperature heat exchanging unit for recovering heat from the superheated steam in the collector. The high temperature electrolysis unit is comprised of evaporation chamber section and a high temperature electrolysis section. The system further comprises units for transferring the recovered heat from the collector to the high temperature electrolysis unit; units for diverting part of the heat to the evaporation chamber and the balance to the high temperature electrolysis section of the high temperature electrolysis unit. The system further comprises heat exchanging unit for transferring recovered heat to the treated water in the evaporation chamber to produce steam; units for transferring the steam produced in the evaporation chamber to the high temperature electrolysis section of the high temperature electrolysis unit; units for continuously removing the salts, minerals, metals and other contaminants from the evaporation chamber section; heat exchanging unit for transferring the balance of the recovered heat to the high temperature electrolysis section of the high temperature electrolysis unit; units for supplying DC current is to the high temperature electrolysis section of the high temperature electrolysis unit from the AC/DC converter; units for supplying heat from external sources to the high temperature electrolysis section of the high temperature electrolysis unit; units for separating the hydrogen gas and oxygen gas from the steam by way of electrodes; units for transmitting the separated hydrogen gas from high temperature electrolysis unit to the corresponding compressor unit and to be stored in a pressurized tank; units for transmitting the separated oxygen gas from high temperature electrolysis unit to the corresponding compressor unit for storage in a pressurized tank; units for insulating the evaporation section and the high temperature electrolysis section of the high temperature electrolysis unit so as to minimize heat loss; units for transmitting the high pressure hydrogen gas from its high pressure storage tank to the hydrogen and oxygen combustor; units for transmitting the high pressure oxygen gas from its high pressure storage tank to the hydrogen and oxygen combustor; units for insulating the combustor to minimize heat loss; units for insulating the high temperature heat exchanger system so as to minimize heat loss; units for removing part of the generated hydrogen gas; units for removing part of the generated oxygen gas; units for removing part of the heat recovered from the collector to another process. The units to facilitate the additional hydrogen and oxygen gas supplied for from a source other than the high temperature electrolysis process. The evaporation chamber section is a unit separate from the electrolysis unit. The system further comprises a mixing station for diluting non-fresh water; conduit connecting the fresh water storage unit to the mixing station for introducing fresh water into the mixing station. The system further comprises a heat exchanger for extracting the heat from the cooling of the hydrogen gas and oxygen gas and from the compression of such gases; units for using the extracted heat in an industrial process selected from adding heat to the heat recovered from the collector, an electricity generation process, and a drying process; units for minimizing the corrosion of any part that is in contact with salts and minerals; units for removing gases other than hydrogen and oxygen generated by the high temperature electrolysis process. The high temperature electrolysis unit also includes a collector and a combustor, where the wall that the collector and combustor share in common is covered by ceramic tiles. The high temperature electrolysis of step (a) is carried out at a temperature of 100 degrees C to just below thermolysis. The unit (T1) further comprises an evaporation chamber. The unit for minimizing the corrosion of any part that is in contact with salts and minerals. The unit (T1) further comprises units for continuously removing the salts, minerals, metals and other contaminants from the high temperature electrolysis unit; units for insulating the high temperature electrolysis unit to minimize heat loss; units for insulating the combustor to minimize heat loss; units for supplying heat from external sources to the high temperature electrolysis section of the high temperature electrolysis unit; units for separating the hydrogen gas and oxygen gas from the steam by way of electrodes; units for transmitting the separated hydrogen gas from high temperature electrolysis unit to the corresponding compressor unit and to be stored in a pressurized tank; units of removal gases other than hydrogen and oxygen generated by the high temperature electrolysis process. In the units (T1), the wall that the collector and combustor share in common is covered by ceramic tiles. The thickness of wall of the collector is tapered along its length. The units (T2) units for minimizing the corrosion of any part that is in contact with salts and minerals; units for continuously removing the salts, minerals, metals and other contaminants from the evaporation chamber section; units for insulating the high temperature electrolysis unit to minimize heat loss; units for supplying heat from external sources to the high temperature electrolysis section of the high temperature electrolysis unit; units for separating the hydrogen gas and oxygen gas from the steam by way of electrodes; units for transmitting the separated hydrogen gas from high temperature electrolysis unit to the corresponding compressor unit and to be stored in a pressurized tank; units of removal gases other than hydrogen and oxygen generated by the high temperature electrolysis process. EXAMPLE - No suitable example given.