Mission accomplished! After 18 days of expedition, PlanetSolar II successfully completed, on October 17, the first full crossing of Lake Titicaca using solar energy, as well as the first full circumnavigation of the highest navigable lake in the world with a solar- and electric-powered boat. The outcome of this journey, which was paired with a...
Departing from Puno on September 30 for the first solar circumnavigation of Lake Titicaca, PlanetSolar II has now begun the return journey! After visiting the Island of the Moon, the scientific expedition stopped at the Island of the Sun — a symbolic stop, as the Moon and the Sun are the two Inca deities of...
Since last Tuesday, September 30th, PlanetSolar II has been sailing the waters of Lake Titicaca — marking a world first: the first solar-powered circumnavigation of the highest navigable lake in the world! The Swiss-flagged vessel is conducting a scientific mission in collaboration with the Binational Authority for the Control of the Lake (ALT), with support...
What a joy – and what an honor – for Raphaël Domjan. And for all of us! “It’s an immense joy and a great source of pride to have the privilege of being mentioned in Who are today’s Tintins?, alongside such extraordinary adventurers,” he exclaims. As a child, the adventures of Tintin were—much to the...
The PlanetSolar Foundation is sailing high, very high, with the ongoing expedition on Lake Titicaca. Powered by solar energy. At the same time, it is following the progress of the SolarStratos mission. Which, in turn, is flying high, very high, on solar energy alone. And on Tuesday, August 12, from Sion Airport, eco-explorer Raphaël Domjan...
Following the flight over the Matterhorn on July 18—featured on the front page of the Financial Times Weekend—SolarStratos has completed another highly successful preparatory flight on the eve of August 1st. Despite less-than-ideal conditions on Thursday, July 31, 2025—particularly in terms of thermal updrafts—Raphaël Domjan took off from Sion for a 2-hour and 31-minute flight...
You can still catch it in the coming days on RTS 1 and 2. The TV spot featuring Raphaël Domjan as ambassador for Naoenergy, a partner of the PlanetSolar Foundation, was filmed in a spectacular setting — right in the middle of wild chamois! Do you recognize the location? Here’s the making-of video — a...
The PlanetSolar II expedition, which runs from 2025 to 2026 on Lake Titicaca, features a very hands-on educational component: the vessel is tracked remotely by Swiss pupils, who even got to step aboard before it set off for Peru. In Santi Terol’s 23 May 2025 Arcinfo article, you can relive teacher Christine Liebe’s journey in...
On April 25, a launch and donation ceremony took place in Puno (Peru) for the solar boat PlanetSolar II, which was handed over to the Binational Authority of Lake Titicaca (ALT). This moving event marked the start of a scientific expedition and a solar energy awareness campaign on the highest navigable lake in the world....
fter a month-long journey from Switzerland, PlanetSolar II has finally reached its destination. Transported last week from the port of Matarani to the shores of Lake Titicaca in Puno, the solar-powered vessel was successfully launched into the world’s highest navigable lake. The occasion was marked by a moving official ceremony, celebrating both the start of...