Solution Overview
Safe Energy Storage for Marine and Offshore Power Systems
Reliable energy storage is a key part of hybrid and fully electric marine power systems. Batteries provide stored energy for sustained operation, while supercapacitors can support short-duration, high-power requirements where rapid energy delivery is critical.
MJR integrates marine battery and supercapacitor systems with power conversion, distribution, control and automation equipment across vessel, offshore and renewable-energy applications.
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Operational Benefits
Energy Storage Where Power Availability Matters
Marine energy storage can provide both sustained stored energy and rapid high-power support, depending on the technology and application.
- Supply-failure and blackout ride-through for critical equipment.
- Emergency backup power for safety-critical vessel systems.
- Stored energy for hybrid and fully electric power architectures.
- Support for offshore and autonomous equipment.
- Battery buffering for alternative marine power-generation technologies.
- Integration with microgrids and renewable generation.
- Reduced reliance on continuous generator operation where the vessel architecture permits.
- Improved resilience through integration with power-management and control systems.
Solution Capabilities
Battery, Supercapacitor and Integrated Energy Storage
MJR has delivered energy-storage applications across vessels, offshore construction, renewable-energy projects and autonomous offshore equipment.
Battery Energy Storage
- Battery systems for hybrid and fully electric vessels.
- Replacement batteries for existing hybrid propulsion systems.
- Battery-supported offshore microgrids.
- Battery-buffered power conversion for hydrogen fuel-cell and hydrogen-engine pilot projects.
- Battery-powered hydraulic power units for offshore installation equipment.
- Battery-powered autonomous subsea lifting equipment.
Supercapacitor Systems
- High-power, short-duration energy storage.
- Common DC bus blackout ride-through.
- Supply-failure protection for large variable speed drive systems.
- AC-connected emergency backup systems.
- Backup power for propulsion thruster steering systems.
System Integration & Approval
Energy storage must be engineered as part of the wider vessel electrical architecture, including power conversion, protection, power management, controls and safety functions. MJR also supports the class and flag approval process associated with complex marine energy-storage installations.
System Gallery
Battery, Supercapacitor and Power Conversion Systems
MJR integrates energy storage with vessel power distribution, converters, drives, automation and safety systems to meet the operational requirements of each marine or offshore application.



Share your vessel, operating profile, storage, power and integration requirements with MJR.
Marine Energy Storage FAQs
Answers to common questions about marine batteries, supercapacitors, hybrid integration, backup power and energy-storage system approval.

