More than a century ago, engineers proposed a bold idea for Egypt’s Western Desert: cut a canal from the Mediterranean Sea into the Qattara Depression, a massive basin located below sea level, and use the resulting water flow to generate electricity indefinitely.
The concept first appeared in 1912 and was further developed by British geologist John Bull in 1927, who mapped the depression in detail and demonstrated how the elevation difference between sea and basin could be converted into a stable, self-sustaining source of hydroelectric power. More than a hundred years later, the idea has yet to be built, yet it continues to resurface periodically as engineers reconsider its potential.
how Low dropper draft It was supposed to work
According to a technical paper archived in the IAEA’s INIS repository, the basic concept behind the scheme was to channel Mediterranean water into the Qattara Depression, using the elevation difference between the sea and the basin floor to produce hydroelectric power. Once seawater enters the depression, it will evaporate steadily under the desert heat, and as long as new water flows at roughly the same rate as it evaporates, the project could theoretically generate a continuous, never-ending supply of electricity rather than relying on a limited reservoir.
Why make the Depression an attractive target?
The Qattara Depression lies well below sea level across a large area of Egypt’s Western Desert, making it one of the few places in the world where this type of gravity-driven power generation can operate on a large scale. Bringing in Mediterranean water would require digging a canal or tunnel about fifty-five to one hundred kilometers long, depending on the chosen route, according to a study entitled Environmental Assessment of Major Development Projects, a case study of the Qattara Depression, published in the Journal of Cleaner Production. The same research shows that once the resulting lake is filled to about sixty meters below sea level, it could support an underground hydroelectric power station, providing Egypt with a large-scale source of electricity without relying on additional dams along the Nile.
Germany and Egypt’s serious attempt in the 1970s
The idea moved beyond theory in the 1970s, when a team of German scientists and engineers, led by an engineer named Bassler, began detailed planning commissioned by the Egyptian government. A preliminary feasibility study conducted by Bassler in 1973 laid the foundation for a more formal government-led study two years later, carried out by a group of companies known as the Al Qattara Joint Venture, representing the most serious engineering effort ever undertaken on the project.
Despite years of technical planning, the scheme was ultimately never built, largely due to the sheer volume of excavations required and unresolved questions about long-term environmental impacts on the surrounding desert.
Environmental trade-offs behind the promise of hydropower
The same study published by the Journal of Cleaner Production highlights the fundamental tension embedded in the entire concept: the same evaporation that would make continuous power generation possible would gradually transform a flooded depression into an increasingly salty lake, with consequences for the surrounding desert ecosystem that remain difficult to reverse once the process is underway.
This trade-off between sustained, low-carbon electricity generation and long-term environmental disruption has remained one of the central sticking points preventing project approval across successive planning attempts over the decades.
Other methods and scenarios suggested by engineers
Beyond the original concept of the Mediterranean Canal, subsequent studies have proposed alternative methods for filling the depression. According to the same peer-reviewed research, one alternative scenario suggested digging a canal from the Nile River instead, allowing floodwaters to be redirected into the depression during the seasonal flood period, while a separate proposal considered desalinating seawater to support agricultural development around the basin rather than filling it completely to generate energy.
None of these alternative approaches has advanced beyond the study stage, largely due to the same cost and environmental concerns that have followed the project since its inception.
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A dream that continues to resurface after a century
Despite repeated feasibility studies extending from the 1920s through the 1970s and beyond, the Qattara Low Project remains unbuilt more than a hundred years after it was first proposed. Its size, which is comparable to the Aswan High Dam in Egypt, continues to attract periodic interest from engineers and policymakers looking for large-scale renewable energy solutions, although the same basic challenges of cost, drilling volume and environmental impact have prevented any version of the plan from getting beyond the drawing board.
