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A sustainable, flexible energy source for affordable and renewable water for all

April 2018
Gallery OSMOSUN 1
Gallery OSMOSUN 1


OSMOSUN® is a unique reverse osmosis desalination technology that continuously adapting to available sunlight to supply affordable, sustainable freshwater.

Relying on sunlight as a power source, the desalination unit is sustainable and fully independent. To produce drinking water, pressurised seawater is taken through membranes, where the reverse osmosis process takes place. Its intelligent system is specifically engineered to adapt its pump and the pace of the motor in accordance with the amount of sunlight available, which can vary widely and suddenly. All parameters are continuously and instantly optimised to ensure the best energy performance and guarantee the maximum lifetime of the installation and of its delicate membranes.

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OSMOSUN by Mascara

Label Date April 26, 2018
From France
Maturity stage Small scale commercialization
Looking For Visibility and opportunities for awareness raising on the technology's potential.

Implementation Stories

OSMOSUN by Mascara Renewable Water
Implemented by Island of Santiago in Island of Santiago (Cape Verde) in 2021

The Minister of Agriculture and the Environment and the French Ambassador of Cape Verde have inaugurated the OSMOSUN desalination installation which provides water for agricultural irrigation on the island of Santiago. The 40m3 of water produced each day by the OSMOSUN Solution represents a milestone on the island as it allows the resumption of activities made impossible by the drought in the archipelago of the past several years.


The unit produces 50m3 of clean water per day powered only by solar energy and without batteries. The effects were immediate with a first harvest of tomatoes, carrots, pumpkins, cucumbers and watermelons.


The environmental benefits

  • Fully solar-powered, adapts to continue functioning with available sunlight, and with no battery
  • Able to desalinate water using 15% less energy compared to other advanced technologies
  • Designed for longevity in remote locations, using sturdy components and with limited maintenance needs
  • Can act as a variable load regulation appliance when in hybrid mode on weak electricity networks

The Financial benefits

  • Pays for itself within 4-7 years, depending on local energy costs.
  • Osmosun desalination units are cost competitive as soon as the electricity cost is above 0,13€/kWh

Activity Region

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  • Headquarters
  • Activity

Company Profile

Mascara Renewable Water

Innovative water treatment and desalination solutions with the use of renewable energy

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Headquarters 28630 Sours, France

Networking Partner


ADEME - The French Agency for Ecological Transition- is a public agency under the joint authority of the Ministry for an Ecological Transition and the Ministry for Higher Education, Research and Innovation.

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Solutions Associated 52

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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Mascara Renewable Water has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.