GR63 Eco-Catamaran: Revolutionizing Sustainable Luxury

After many months, even years, of planning, design, and meticulous development, the final construction and commissioning phase of the GR63 eco-catamaran is now underway.

A true milestone in marine innovation, this project is moving from speculation to reality, delivering a vessel that redefines what is possible in the leisure marine sector.

While many talk about what will happen “in the future,” the GR63 exists today. It is designed and built—not merely theorized. It stands as a fully realized example of next-generation sustainable yachting: zero-emission, fully electric, and uncompromisingly luxurious.

The GR63 is the result of true engineering collaboration. Born from an idea brought to life by two engineers working closely together to push boundaries, every element of the vessel has been carefully shaped from concept to launch. The result is a unique construction method paired with an electrical system that surpasses anything previously achieved on a vessel of this size.

“There have been challenges along the way,” says designer-builder Gilles Reigner. “But innovation rarely takes the easy path. What we’ve built is not just a yacht. It’s proof that the zero-emission ocean is no longer a dream. It’s reality.”

He continues: “The GR63 is more than a vessel. It’s a statement. A testament to how luxury and sustainability can coexist in harmony. Our mission is to offer freedom, comfort, and responsibility at sea while ensuring that our oceans and natural resources are preserved for future generations.”

Smart Energy. True Autonomy.

One of the GR63’s flagship innovations is its AI-based Energy Management System (EMS), an intelligent control platform that monitors, predicts, and optimizes energy flows throughout the vessel in real time.

The system balances inputs from solar, wind, batteries, and fuel cells based on environmental conditions and energy demand.

Adaptive load prioritization ensures host systems, propulsion, and climate control run smoothly while maximizing efficiency.

Predictive algorithms dynamically adjust energy usage to maintain autonomy, even during changing weather or extended voyages.

“This project has pushed the limits of what is possible in marine electrification,” said Ricky Cole, CTO at ePropulsion. “The GR63’s electrical system sets a new benchmark—not only in terms of integration and autonomy, but also in its ability to deliver real-world performance supporting long-range, zero-emission operations. This is what the future of yachting should look like, and we’re proud to have helped make it real.”

A New Standard for Sustainability and Autonomy

The 19.2-meter GR63 catamaran is engineered for total energy independence, combining cutting-edge renewable energy systems with advanced materials and bold modern design. Key features include:

Two 110 kW electric motors powered by a 284 kWh LiFePO4 battery bank

High-efficiency solar panels rated at 12 kWp; in a sun-rich location like Thailand, where the solar yield averages over 5.5 peak sun hours per day, these panels can realistically generate more than 66 kWh of energy daily

Vertical-axis wind turbines delivering a total of 10 kW

Transparent solar glazing and a solar canopy, both producing energy without compromising form or function

Methanol fuel cells providing 2 × 15 kW of clean, silent backup power

Innovative Construction for Performance and Efficiency

The GR63’s performance begins at its core design through a bold materials strategy. The hull and structure are built from a high-performance basalt and aramid fiber composite, chosen for its exceptional strength-to-weight ratio.

Sustainable Luxury. Expertly Crafted.

Onboard, the GR63 blends advanced technology with serene comfort. Climate control is provided by a custom system of high-efficiency inverter-driven air conditioners, equipped with quiet DC motors and titanium heat exchangers. The result is a silent, energy-saving environment that adapts effortlessly to outside conditions, ensuring every journey is as comfortable as it is efficient.

Adding to this, a dedicated hydroponic growing space allows guests to enjoy a selection of fresh vegetables cultivated directly onboard. This garden not only provides unmatched flavor and nutrition but also embodies the vessel’s ethos of self-sufficiency and low-impact living at sea.

CE Class A – Ocean certified, the GR63 is built for serious offshore passages. Inside, sustainable comfort meets modern luxury: advanced inverter-driven DC climate systems, onboard hydroponics for fresh food at sea, and a striking interior designed to balance performance with pleasure.

The GR63 is neither a concept nor a prototype. It is a fully built vessel proving that sustainable luxury yachting is not only viable but already a reality. With unmatched energy independence, advanced systems, and refined craftsmanship, it is poised to set a new benchmark for the entire industry.

An upcoming press release will mark the yacht’s official launch on the water in the months ahead. This groundbreaking catamaran will begin its journey as a true pioneer of the zero-emission ocean.

About Gilles Reigner

Gilles Reigner is a yacht designer and builder recognized for challenging conventions and delivering tangible solutions to maritime sustainability. Based in Hua Hin, Thailand, he has built a reputation for combining engineering precision with environmentally conscious design.

About ePropulsion

ePropulsion is a global leader in electric marine propulsion systems, known for in-house design, engineering excellence, and a commitment to clean technologies. Serving both commercial and leisure markets, ePropulsion provides integrated systems tailored to performance, compliance, and sustainability.