Corvus Dolphin NxtGen ESS – Energy
High-energy, space efficient marine energy storage

Corvus Dolphin NxtGen ESS – Energy
The Corvus Orca ESS is the most installed marine battery energy storage system worldwide, operating in over 700 vessels and maritime applications around the world.

Key Features
Key Features
The energy variation of the Corvus Dolphin NxtGen marine energy storage system is designed for vessels that require a high-energy battery system for lightweight applications.
The Corvus Dolphin NxtGen energy variation offers outstanding energy density, reasonable power density, and the highest level of marine battery safety. Its space-efficient, high-energy battery system design is perfect for applications where lightweight is essential.
The energy variation of the Corvus Dolphin NxtGen marine energy storage system is designed for vessels that require a high-energy battery system for lightweight applications.
The Corvus Dolphin NxtGen energy variation offers outstanding energy density, reasonable power density, and the highest level of marine battery safety. Its space-efficient, high-energy battery system design is perfect for applications where lightweight is essential.
Low C-rate for slow charge and discharge
Optimized energy transfer that preserves battery life while delivering consistent, reliable power.
Low weight
Maximized power-to-weight ratio for improved vessel efficiency and reduced structural demands.
Flexible installation
Adaptable configuration options that integrate seamlessly with diverse vessel architectures.
Low C-rate for slow charge and discharge
Optimized energy transfer that preserves battery life while delivering consistent, reliable power.
Low weight
Maximized power-to-weight ratio for improved vessel efficiency and reduced structural demands.
Flexible installation
Adaptable configuration options that integrate seamlessly with diverse vessel architectures.
Main Specification
Main Specification
Technical Excellence in Every Detail
Chemistry
Lithium ion NCA
Chemistry
Lithium ion NCA
Energy
8.2 kWh
Energy
8.2 kWh
Capacity
190 Ah
Capacity
190 Ah
C-Rate RMS/ Peak
0.5C RMS / 1,0C for 10 seconds
C-Rate RMS/ Peak
0.5C RMS / 1,0C for 10 seconds
Dimensions
666 (l) x 500 (w) x 100 (h) mm
Dimensions
666 (l) x 500 (w) x 100 (h) mm
Weight
45.5 kg
Weight
45.5 kg
Maximum Voltage
50 VDC
Maximum Voltage
50 VDC
Ingress Protection
IP66
Ingress Protection
IP66
Cooling
Forced air
Cooling
Forced air
Applications
Applications
Versatile Power for Every Maritime Need
Dolphin NxtGen ESS energy variation is ideal for ships with long, slow charges and discharges where lightweight is essential. The system is suitable for both hybrid electric and all-electric maritime applications. Typical vessels include:
Versatile Power for Every Maritime Need
Dolphin NxtGen ESS energy variation is ideal for ships with long, slow charges and discharges where lightweight is essential. The system is suitable for both hybrid electric and all-electric maritime applications. Typical vessels include:
Ferries
Ferries
Yachts
Yachts
Canal Boats
Canal Boats
Tourist Vessels
Tourist Vessels
Sightseeing Vessels
Sightseeing Vessels


Functions
Functions
Fit more battery power into less space
Maximize use of available battery room space to achieve higher levels of battery system output and capacity with the Corvus Dolphin NxtGen ESS. The space efficient, rack-free design enables energy dense battery modules to be stacked in various configurations, like compact, high-energy building blocks. Eliminating the limitation of fixed-height racks provides the flexibility to fully utilize the space available and allows you to fit more battery power within a limited footprint.
Low C-rate for slow charge and discharge
Low weight
Designed for voltages up to 1200 VDC
Flexible installation
Low life cycle cost
Easy and safe plug and play connections
Very flexible and modularized design
Passive Single-cell Thermal Runaway protection
Scalable capacity and voltage according to vessel requirements
Industry-proven Battery Management System (BMS)
Remote monitoring capabilities
Enhanced EMI immunity design for maritime environments
Next generation marine energy storage, advancing maritime battery technology with the Corvus Dolphin NxtGen ESS.
Leveraging the latest advances in marine battery energy storage technology and zero-emission solutions, the Dolphin NxtGen is the newest ESS in the Corvus Energy family of products. Its next generation design builds upon learnings from our experience with over 1,000 projects and millions of system operational hours as the maritime sector leader in battery energy storage and sets new industry standards in marine battery systems.
Fit more battery power into less space
Maximize use of available battery room space to achieve higher levels of battery system output and capacity with the Corvus Dolphin NxtGen ESS. The space efficient, rack-free design enables energy dense battery modules to be stacked in various configurations, like compact, high-energy building blocks. Eliminating the limitation of fixed-height racks provides the flexibility to fully utilize the space available and allows you to fit more battery power within a limited footprint.
Low C-rate for slow charge and discharge
Low weight
Designed for voltages up to 1200 VDC
Flexible installation
Low life cycle cost
Easy and safe plug and play connections
Very flexible and modularized design
Passive Single-cell Thermal Runaway protection
Scalable capacity and voltage according to vessel requirements
Industry-proven Battery Management System (BMS)
Remote monitoring capabilities
Enhanced EMI immunity design for maritime environments
Next generation marine energy storage, advancing maritime battery technology with the Corvus Dolphin NxtGen ESS.
Leveraging the latest advances in marine battery energy storage technology and zero-emission solutions, the Dolphin NxtGen is the newest ESS in the Corvus Energy family of products. Its next generation design builds upon learnings from our experience with over 1,000 projects and millions of system operational hours as the maritime sector leader in battery energy storage and sets new industry standards in marine battery systems.
Specifications & datasheet
Specifications & datasheet
Technical Specifications
Performance Specifications
C-Rate - Peak (Discharge / Charge)
1.0C / 1.0C for 10 seconds
C-Rate - Peak (Discharge / Charge)
1.0C / 1.0C for 10 seconds
C-Rate - Continuous (Discharge / Charge)
0.5 C / 0.5C
C-Rate - Continuous (Discharge / Charge)
0.5 C / 0.5C
System Specifications
Battery Cell Chemistry
Lithium ion NCA
Battery Cell Chemistry
Lithium ion NCA
Single Module Size / Increments
8.2 kWh / 50 VDC
Single Module Size / Increments
8.2 kWh / 50 VDC
Single Module Capacity
190 Ah
Single Module Capacity
190 Ah
Module Dimensions
666(l) x 500(w) x100(h) mm
Module Dimensions
666(l) x 500(w) x100(h) mm
Module Weight
45.5 kg
Module Weight
45.5 kg
Single String Range
33-197 kWh / 130-1205 VDC
Single String Range
33-197 kWh / 130-1205 VDC
Max Gravimetric Density - String
168 Wh/kg | 5.96 kg/kWh
Max Gravimetric Density - String
168 Wh/kg | 5.96 kg/kWh
Max Volumetric Density - String
212.5 Wh/l
Max Volumetric Density - String
212.5 Wh/l
Safety Specifications
Thermal Runaway Anti-propagation
Passive cell-level thermal runaway isolation
Thermal Runaway Anti-propagation
Passive cell-level thermal runaway isolation
External Fire Suppression
Per SOLAS, class and Corvus recommendation
External Fire Suppression
Per SOLAS, class and Corvus recommendation
Disconnect Protection
Hardware-based fail-safe overcharge protection
Disconnect Protection
Hardware-based fail-safe overcharge protection
Short Circuit Protection
Integrated cell-level fusing
Short Circuit Protection
Integrated cell-level fusing
Emergency Stop Circuit
Hard-wired
Emergency Stop Circuit
Hard-wired
Ground Fault Detection
Integrated
Ground Fault Detection
Integrated
Integral Disconnect Circuitry Rating*
Full load (*not compliant with IEC 60947-1)
Integral Disconnect Circuitry Rating*
Full load (*not compliant with IEC 60947-1)
General Specifications
Class Compliance
DNV, Bureau Veritas, Lloyd's Register* (*Project Approval)
Class Compliance
DNV, Bureau Veritas, Lloyd's Register* (*Project Approval)
Type Approval
DNV, Bureau Veritas, Lloyd's Register
Type Approval
DNV, Bureau Veritas, Lloyd's Register
Ingress Protection
IP66* (*LV AC compartment of SIB is IP56)
Ingress Protection
IP66* (*LV AC compartment of SIB is IP56)
Cooling
Forced air
Cooling
Forced air
Safety
Safety
Corvus Energy Safety Innovations
Corvus Energy Safety Innovations
Passive-Single-Cell-level Thermal Runaway (TR) Isolation
True cell-level thermal runaway isolation
TR does not propagate to neighboring cells
Isolation NOT dependant on active cooling
Passive single-cell Thermal Runaway (TR) Isolation
• True cell-level thermal runaway isolation • TR does not propagate to neighboring cells • Isolation is not dependent on active cooling
Expert Support at Every Stage
Our team of marine energy specialists is ready to help with system design, installation planning, commissioning, and ongoing maintenance.


Ready to Power Your Maritime Future?
Corvus Energy combines advanced battery technology with AI-powered monitoring to deliver the safest, most efficient energy storage solutions for the maritime industry. Our automated production facility in Bergen ensures unmatched quality and reliability across our entire product line.

Ready to Power Your Maritime Future?
Corvus Energy combines advanced battery technology with AI-powered monitoring to deliver the safest, most efficient energy storage solutions for the maritime industry. Our automated production facility in Bergen ensures unmatched quality and reliability across our entire product line.
Our products
Our products
Explore Our Complete Energy Storage Portfolio
The leader in zero-emission marine solutions, Corvus Energy products are designed for Life at Sea™ More than 50% of the world’s hybrid and all-electric maritime vessels are equipped with a Corvus Energy system.
Explore Our Complete Energy Storage Portfolio
The leader in zero-emission marine solutions, Corvus Energy products are designed for Life at Sea™ More than 50% of the world’s hybrid and all-electric maritime vessels are equipped with a Corvus Energy system.