ENERGY & PROPULSION SYSTEM
The JOOOL system
One integrated architecture managing energy storage, power distribution, electric propulsion, and hydrogeneration from the moment you leave the dock to the last anchor watch of the night.
What makes it different
WHY HYBRID-ELECTRIC ?
Fully integrated system
Energy storage, power management, electric propulsion, and renewable sources : each component engineered independently, all operating as one system.
energy
Storage
LiFePO4 modules from 21 to 38 kWh, scalable up to 152 kWh. All hotel loads run silently from battery storage. State of charge and battery health monitored in real time.
power
Management
The EPMS and the OneBox, manages all energy flows automatically : source prioritization, load balancing, generator cycling. No manual intervention required.
electric
Propulsion
Direct drive, no gearbox. Full torque from zero RPM, immediate response in both directions. Available in 25, 35 and 50 kW for monohulls and catamarans from 40 to 65 feet.
renewable
Energy
Solar, hydrogeneration, and shore power replenish the battery bank. The range extender activates only when reserves require it typically under one hour per day in good weather.
READY-TO-USE
Plug & Play integration
Battery Pack
A unit that enables energy conversion and distribution
for your boat.
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OneBox
A unit that enables energy conversion and distribution
for your boat.
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Electric Drive
Electric motor for reliable, silent,
and sustainable propulsion.
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Throttle
Precision control for electric & hybrid propulsion systems.
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EPMS
An intelligent onboard computer
to optimize energy management.
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Battery Pack
A unit that enables energy conversion and distribution
for your boat.
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OneBox
A unit that enables energy conversion and distribution
for your boat.
Learn more
PowerPod
Electric motor for reliable, silent,
and sustainable propulsion.
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Throttle
Precision control for electric & hybrid propulsion systems.
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EPMS
An intelligent onboard computer
to optimize energy management.
Learn more
THE COMPLETE SYSTEM
Every component for one ecosystem
THE ONEBOX CONCEPT
One ecosystem, two configurations
The JOOOL OneBox is the heart of every hybrid-electric system we build. Modular, pre-assembled, and factory-tested, it centralizes energy production, storage, conversion, and distribution in a single plug-and-play architecture.
01
OneBox Energy :
Energy management & massive battery storage
Enables silent mooring, reduces generator runtime and powers large consumers at anchor : up to 152 kWh of onboard storage, with BMS and EPMS integrated for full energy conversion, distribution and management. Compatible with any motor yacht, catamaran or sailboat keeping its thermal engine, from 40 to 120 feet.
02
OneBox Propulsion :
Electric propulsion & energy management
Integrates silent sailing, electric propulsion and hydrogeneration under sail with the same energy management and storage capacity as the OneBox Energy. All power flows managed within a single unit. For sailing vessels from 40 to 65 feet.
QUESTIONS
Everything you want to know
Yes. JOOOL systems are designed to integrate without structural modification, compatible with most production monohulls and catamarans from 40 to 65 feet, with the OneBox Propulsion system and PowerPod replacing the diesel drive. For vessels of any size up to 120 feet that want large-capacity battery storage and silent mooring without electric propulsion, the OneBox Energy is the right configuration. In both cases, the PowerPod is installed in place of, or alongside, the existing diesel drive. JOOOL's engineering team assesses each vessel individually to confirm compatibility and specify the right configuration.
Ready to electrify your yacht?
Whether you're a shipyard integrating hybrid systems into a production range, or a boat owner looking to upgrade, the right configuration depends on your vessel, your usage and your goals.
For shipyards & professionals
Integration specs, certification support, commissioning timeline and production line compatibility.
For boat owners & sailors
System sizing, compatible models, storage capacity and retrofit options for your vessel.
