The Saline Energy project, which promised to revolutionize the sector with electricity from osmosis, has collapsed. After years of investments and expectations, those responsible have announced its definitive closure. The causes: technical failures in the membranes and a maintenance cost that exceeded any benefit. Another energy promise fades away, leaving only questions about the viability of these alternative technologies.
The technical failure no one anticipated 🔧
The system was based on ion exchange membranes to generate electricity by mixing fresh and salt water. The real problem was not the idea, but the applied physics. The membranes clogged with sediment in weeks, not years. The osmotic pressure required constant pumping that consumed more energy than it generated. Engineers attempted patches with sand filters and chemicals, but the efficiency ratio never exceeded 15%. A failure of engineering more than of concept.
And salt remained just for olives 🫒
Now investors wonder if it wouldn't have been more profitable to set up an olive production plant on that land. At least, the leftover brine would have been useful for seasoning. The project leaves a legacy of rusted pipes and a pile of technical reports no one will read. The moral is simple: sometimes, the cleanest energy is the one not spent trying to extract electricity from a glass of salt water.