Solar-powered desalination

Solar-powered desalination offers an alternative to costly water imports in areas with inadequate water supply or decreasing water supply due to climate change. Solar desalination projects utilize reverse osmosis technology, using solar PV arrays with battery banks to treat seawater. The solar desalination installations in this project can produce 19 meters cubed per day (m3/d). Reported benefits of solar desalination in the state of Baja California Sur, Mexico include providing electricity and clean water to communities without access to electricity or primary fuel resources or water networks. This is a technology that can be used in areas with saline groundwater. Because of the energy required for desalination, the researchers emphasized that this technology is only appropriate in areas facing water scarcity. In the areas under study, conventional energy was more often used than solar but solar-powered desalination is emerging but limited due to cost, maintenance, and performance of solar-powered desalination systems.

Climate Related Risk

Changes in precipitation, Change in water quantity, Change in water quantity table, Drought, Drying trend

Form of Option


Country of Origin



Households, Municipality/urban area


The option has been identified and implemented with indication that it will continue beyond the context of the project.

Institution / Legal Reach

Change in norms or ways of doing things