Sun-baked Morocco, grappling with its worst drought in decades, has launched a pilot project aimed at slowing water evaporation while simultaneously generating green energy using floating solar panels.
At a major reservoir near the northern city of Tangier, thousands of so-called “floatovoltaic” panels protect the water’s surface from the blazing sun and absorb its light to generate electricity.
Authorities plan to power the neighboring Tanger Med port complex with the resulting energy, and if it proves a success, the technology could have far wider implications for the North African kingdom.
Photo: AFP
Morocco’s water reserves lost the equivalent of more than 600 Olympic-sized swimming pools every day to evaporation between October 2022 and September 2023, according to government data.
Over that same period, temperatures averaged 1.8°C higher than normal, meaning water evaporated at a higher rate.
Alongside other factors such as declining rainfall, this has reduced reservoirs nationwide to about one-third of their capacity.
Moroccan Ministry of Equipment, Transport, Logistics and Water official Yassine Wahbi said the Tangier reservoir loses about 3,000 cubic meters a day to evaporation, but that figure more than doubles in the hot summer months.
The floating photovoltaic panels can help cut evaporation by about 30 percent, he said.
The water ministry said the floating panels represent “an important gain in a context of increasingly scarce water resources,” even if the evaporation they stop is, for now, relatively marginal.
Assessment studies are underway for another two similar projects in Oued El Makhazine, at one of Morocco’s largest dams in the north, and in Lalla Takerkoust near Marrakesh.
Similar technology is being tested in France, Indonesia and Thailand, while China already operates some of the world’s largest floating solar farms.
Since the Moroccan pilot program began late last year, more than 400 floating platforms supporting several thousand panels have been installed.
The government wants more, planning to reach 22,000 panels that would cover about 10 hectares at the 123-hectare Tangier reservoir.
Once completed, the system would generate about 13 megawatts of electricity — enough to power the Tanger Med complex — a vast industrial port hub on Morocco’s Mediterranean coast.
Authorities also have plans to plant trees along the banks of the reservoir to reduce winds, which are believed to exacerbate evaporation.
Hassan II University of Casablanca professor of climatology Mohammed-Said Karrouk called it a “pioneering” project.
However, the reservoir is too large and its surface too irregular to be covered completely with floating panels, which could be damaged with fluctuating water levels, he said.
Water reserves fed by rainfall have fallen by nearly 75 percent in the past decade compared with the 1980s, dropping from an annual average of 18 billion cubic meters to only five, official data showed.
Morocco has so far mainly relied on desalination to combat shortages, producing about 320 million cubic meters of potable water a year.
Authorities aim to expand production to 1.7 billion cubic meters yearly by 2030.
Karrouk said an urgent priority should be transferring surplus water from northern dams to regions in central and southern Morocco that are more impacted by the years-long drought.
The kingdom already has a system dubbed the “water highway” — a 67km canal linking the Sebou basin to the capital, Rabat — with plans to expand the network to other dams.
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