At the gates of the Sahara, Morocco has turned one of its greatest natural resources, solar radiation, into a strategic piece of its energy transition.
The Noor Ouarzazate complex, inaugurated in stages since 2016, combines thermal and photovoltaic solar energy to reach 580 MW of installed capacity.
Its most striking structure is a 250-meter tower surrounded by thousands of mirrors. However, behind that futuristic image lies a technology designed to tackle one of the major limitations of solar energy: the absence of radiation during the night.
Noor Ouarzazate: the solar megaproject in Morocco that converts the Sahara’s heat into electricity. Photo: ACWA Power.
Thousands of mirrors concentrate heat and allow electricity generation to continue after sunset
The complex is not a single plant, but a set of facilities developed in different stages. Noor I and Noor II use solar thermal technology, while Noor III incorporated the iconic concentration tower and Noor IV operates using photovoltaic technology.
In particular, Noor III began its commercial operations at the end of 2018 and has a capacity of 150 MW. Its heliostats track the sun’s path and concentrate radiation on a receiver located at the top of the tower.
Subsequently, the heat is stored in molten salts, which allow for thermal energy storage for several hours. This way, the system can continue producing steam and electricity after dark, when conventional photovoltaic panels have already stopped generating.
Storage thus represents one of the main technological advantages of the project. It allows part of the solar generation to be adapted to times when electric demand increases.
Morocco harnesses its abundant solar radiation
The construction of Noor also responded to an energy need. Morocco has significant solar and wind resources, but has historically depended on imports to supply a large part of its energy requirements.
Therefore, developing renewable sources allows for reduced exposure to international fossil fuel prices. Additionally, the expansion of these technologies helps diversify the electric grid and progressively decrease emissions associated with generation.
Currently, renewable energies occupy a growing place within the country’s installed electric capacity. In this scenario, the Ouarzazate complex serves as a large-scale demonstration of the possibilities of solar energy in North Africa.
Noor Ouarzazate: the solar megaproject in Morocco that converts the Sahara’s heat into electricity. Photo: Ouarzazate.
A monumental work that also reveals environmental and technological challenges
Noor required an investment of over 3 billion dollars and a considerably more complex infrastructure than that of a conventional photovoltaic plant.
Moreover, the operation of solar thermal plants demands specialized storage and maintenance systems. Noor III experienced a leak in 2024 in one of its molten salt tanks that caused a prolonged interruption, although it later resumed operations.
The environmental benefits of harnessing the Sahara’s solar energy
The main environmental contribution of the complex is the generation of renewable electricity without directly relying on the combustion of coal, oil, or gas. Thus, it helps reduce greenhouse gas emissions from the energy system.
Furthermore, thermal storage allows for better utilization of available solar energy and reduces the need to resort to fossil sources when solar production declines.
Finally, Noor demonstrates that the energy transition can combine renewable energies and storage to meet continuous demand. In a region marked by exceptional solar radiation, the project transforms the desert heat into electricity and turns the Sahara landscape into part of a long-term energy strategy.