Water& Minerals

The desalination plant operates as a continuous 35–50MW load, powered by geothermal electricity. Its primary output — fresh water — flows in two directions: to data centre cooling towers, where it absorbs and dissipates server heat, and to greenhouse agriculture, where it supplies precision drip irrigation across 35 hectares of controlled-environment cultivation. Cooling water returned from the data centre re-enters the system at elevated temperature, reducing re-heating energy for brine crystallisation.

Concentrated brine — a by-product most facilities discharge as a pollutant — becomes the primary feedstock for the brine valorisation plant. Using geothermal waste heat for crystallisation and evaporation, the plant extracts pharmaceutical-grade salt (183,000 t/yr), magnesium compounds for industrial and pharmaceutical use, potassium sulfate for the greenhouse facility, and lithium carbonate for battery supply chains. Zero liquid discharge means no brine is returned to the sea.

Mineral outputs feed directly back into other mainland operations. Potassium sulfate and magnesium compounds supply the greenhouse as precision fertilisers, replacing imported agrochemicals. Construction-grade minerals are incorporated into the SYSTEM 3E modular building system. This internal supply chain — where one facility's output is another's input — is how the mainland district achieves cost reduction and environmental performance impossible in isolated operations.