Inspire a new way of sailing
Our approach
Redefining onboard energy
JOOOL engineers integrated energy and propulsion systems that redefine onboard power. By storing more energy on board, yachts can operate silently at anchor, manoeuvre in electric mode and reduce reliance on generator sets. The result is quieter operation, improved comfort and more efficient energy use at sea. Hybrid-electric architectures operate within a unified ecosystem: scalable, robust and ready for integration. From intelligent energy management and high-capacity energy storage to electric propulsion, each component is engineered for absolute reliability at sea. Industrialized plug-and-play modules simplify installation, reduce wiring and optimize overall performance. For nearly three decades, Alternatives Energies has refined marine power systems with the same rigor and technical vision. With JOOOL, this expertise sets a new benchmark for modern yacht construction, where advanced technology meets industrial precision.
Our experience
Built on proven expertise by Alternatives Energies
In 1997, Philippe Pallu de la Barrière won the European Solar Boat Challenge, revealing the untapped potential of renewable energy at sea. A year later, he founded Alternatives Energies and launched the first 100% electro-solar ferry in the port of La Rochelle.
Since then, the company has built a solid reputation for innovation and resilience, providing advanced, low-emission propulsion systems for the maritime sector and supporting the ecological transition of professional fleets.
Our experience
Decades of expertise in electrification of the maritime sector
For over two decades, we have been driving the maritime industry’s energy transition with innovative, reliable, and high-performance solutions. Our expertise comes to life through iconic projects—each a milestone in the evolution of clean propulsion.
ALBA – HYDROGEN SCHOOL SHIP - BASTIA
In October 2024, we proudly launched ALBA, the first hydrogen-powered school vessel in France. Developed in partnership with EODev and commissioned by the Office des Transports de la Corse and the University of Corsica, embodies our vision of clean, forward-looking maritime education, offering students a hands-on experience with sustainable technologies.
ECOBATEAU BUS - TOULON
The two EcoBatoBus operating in Toulon are equipped with a serial hybrid propulsion and energy system. These vessels cross the Toulon harbor (5 km) 30 times a day. They operate in full electric mode at 7 knotswhen approaching ports (half of the journey time), and under generator power at 12 knots during open-water crossings.
HYNOVA - DAYBOAT - CASSIS
Another notable project is the HYNOVA 40, the world’s first dayboat equipped with a certified electro-hydrogen propulsion system for recreational use. We provided the full energy system architecture for thisinnovative vessel, blending environmental responsibility with luxury and performance. The HYNOVA 40showcases the potential of our scalable, clean-energy solutions in the private yachting sector.
DAY1 – HYBRID PASSENGER CATAMARAN – MARSEILLE
Launched in March 2025, DAYONE is a new 80-foot passenger catamaran built for operations in the Marseille region and its protected coastal areas. We designed and integrated its hybrid propulsion system, combining electric motors, LITHIUM batteries, solar charging, and sail assistance. Fully electric when leaving the port, DAYONE ensures quiet, emission-free navigation in the Calanques. This project reflects our ability to deliver efficient, low-impact energy solutions tailored to sensitive maritime environments.
new era of sailing
Pioneering hybrid energy-propulsion systems produced in series
Launch of the AURA 51 Smart Electric
The launch of the Aura 51 Smart Electric in 2022 was a historic milestone for JOOOL.
It marked the first integration of a fully industrialized hybrid energy-propulsion system in a series-produced sailing catamaran, setting a new standard in modern yachting.
Four years later, our expertise has continued to evolve, and a significant number of units are now sailing across the world, celebrating the reliability, efficiency, and success of our hybrid technology.
Variety
Wide range available
JOOOL delivers a fully integrated, turnkey hybrid system tailored fora wide range of sailboats from 35ft to 65ft. By redefining energymanagement, optimizing storage and production capabilities, oursystem allows you to sail free from energy constraints.
