Water desalination for electrolysis to enable green hydrogen in water-stress locations

With the 2015 Paris Agreement aim of reducing the average global temperature rise to below 2°C, there is an urgent need to reduce our reliance on fossil fuels. This is particularly necessary in emerging economies, where access to cheap and reliable energy is essential towards their development.

The cheapest form of electricity production relies on the burning of fossil fuels, which in turn results in substantial carbon dioxide (CO2) emissions.

Although dependant on how it is produced, hydrogen can be considered a carbon-neutral alternative. Green hydrogen is considered the most sustainable form of hydrogen and can be produced through water electrolysis, thus replacing fossil fuels. Electrolysers need fresh water to make hydrogen and the large electrolyser projects are often situated in regions with high levels of sunlight and low levels of freshwater, which is where desalination comes into the picture.

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