Dahu face aux montagnes

Swiss Solar Boat Next Steps for 2024

Our next goal : Lausanne – Evian crossing

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After two years of designing and producing the range extender for its Dahu, Swiss Solar Boat is about to reach a new milestone.

Since 2022, many challenges have been brilliantly met by the team, and the first Lausanne-Evian crossing on a hydrogen foiling boat has never been so close!

The aim of this crossing is to prove that the hydrogen vector can be mastered and that it is beneficial to nautical mobility.

This will mark a major step forward in our project to produce a new prototype by 2026.


The REX is a system that has been developed since mid 2022.

It is composed of a 2kW Fuel Cell System and 2 hydrogen tanks which will carry a total of 300g of Hydrogen.

It is implemented in parallel of the solar panel. With one supply of hydrogen the boat will be able to reach a total autonomy of 26km.

The system has been implemented in a highly efficient carbon sled below the deck and next to the cockpit.

The Dahu’s REX system will triple its range while increasing its weight by just 25%.


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