The Arabian Peninsula has almost no freshwater. What it has is some of the most intense solar radiation on Earth, long coastlines on warm shallow seas, and — after fifty years of oil revenues — the capital to turn those assets into infrastructure. The combination produced a water technology ecosystem that is arguably the most advanced in the world.
Saudi Arabia's NEOM desalination project pairs a 7.5 gigawatt solar array with the world's largest reverse osmosis plant, producing 600 million cubic metres of freshwater annually. For the first time in history, the energy cost has dropped below the equivalent oil-powered figure. The UAE's Abu Dhabi National Energy Company retired its last gas-powered desalination plant in 2023. Kuwait now recycles 100 percent of its wastewater for agricultural use, ending its previous dependence on desalinated water for irrigation.
The operational knowledge that accumulated building all of this — membrane management, brine disposal that does not wreck marine ecosystems, aquifer recharge methodology, AI-optimised distribution networks — turns out to be worth serious money elsewhere. Saudi Aramco's water subsidiary, SWCC International, signed $12 billion in contracts during 2024 for desalination and water management projects in India, East Africa, and Central Asia. Water-stressed countries with different geographies but the same fundamental problem are paying for the playbook.
Brine disposal remains the system's unresolved problem. The concentrated salt waste returning to the Gulf has raised coastal salinity measurably in enclosed areas. Long-term monitoring programmes are still characterising what that means for marine biodiversity. The answer is not in yet.
"We turned a problem into expertise," said SWCC International CEO Waleed Al-Zubari. "Now other countries with the same problem are asking us to help them do the same."