EPFL Student‑Built Solar‑Hydrogen Foiler Targets 35‑Knot Speed for 2026 Monaco Debut

*TL;DR: EPFL’s student team will unveil the Renewable Energy Foiler, a solar‑hydrogen hybrid capable of 35 knots and 250 km range, at the 2026 Monaco Energy Boat Challenge.

Context Waterborne mobility is gaining traction as a low‑emission alternative for tourism, sport and transport. The Swiss Solar Boat project at EPFL brings together 75 engineering students to prove that clean propulsion can match performance demands.

Key Facts - The Renewable Energy Foiler (REF) combines hydrogen fuel cells with solar panels, delivering a top speed of 35 knots (65 km/h) and a range between 160 km and 250 km on a single fuel‑energy cycle. - The team completed the hull and foil design in summer 2024 and is now integrating electronics, including specialized CAN communication cables and waterproof cable glands supplied by LAPP. - In 2024 the predecessor vessel Dahu crossed Lake Geneva, confirming hydrogen’s viability for emission‑free marine propulsion. - The REF is slated for a spring launch on the Swiss Alps‑framed lake and will be showcased at the Monaco Energy Boat Challenge in 2026.

What It Means If the REF meets its performance targets, it will set a new benchmark for hybrid marine craft, proving that solar‑hydrogen systems can rival conventional engines in speed and endurance. Successful deployment could accelerate adoption of zero‑emission boats in recreational and commercial sectors, especially in regions where short‑range, high‑speed travel is essential. The Monaco showcase will provide a high‑visibility testbed, drawing attention from regulators, investors and maritime manufacturers.

Looking Ahead Watch for the spring lake trials and the Monaco Energy Boat Challenge results, which will indicate whether solar‑hydrogen foiling can become a mainstream maritime solution.