Corvus Moray Power

The Moray Power is a highly advanced battery system for demanding subsea environments. The customer has a unique possibility to customize the product for the required application.

This Energy Storage System is ideal for systems performing active heave compensation, buffer stations, or high power rated actuators.


Corvus Moray Power is ideal for subsea applications where tailor-made energy storage systems are needed and regeneration of energy into the battery is expected.


  • High C-rate, up to 1,1C peak
  • Low weight
  • Designed for voltages up to 900 VDC
  • Easy and safe plug and play connections
  • Low life cycle cost
  • Very low self-discharge for long term energy storage operations
  • Very flexible and modularized design
  • Passive single-cell Thermal Runaway protection
  • Scalable capacity and voltage according to requirements
  • Industry-proven Battery Management System (BMS)
  • Remote monitoring capabilities
  • Enhanced EMI immunity design for maritime environments

Reference project:

Safelink AS – ESS for inline heave compensation

Safelink delivers equipment that enables heave compensation when lowering equipment down on the seabed without having a heave compensated crane. Corvus Energy has delivered Moray Power ESS for the equipment shown in the youtube video below

Technical Specifications

Performance Specifications
C-Rate - Peak (Discharge / Charge)1,1C / 1,1C for 10 seconds
C-Rate - Continuous (Discharge / Charge)0,55C / 0,55C
System Specifications
Single Module Size / Increments1,3 kWh / 8 VDC
Single Pack Range5,3-165 kWh / 32-900 VDC
Max Gravimetric Density - Pack145 Wh/kg | 6,9 kg/kWh
Max Volumetric Density - Pack135 Wh/l
Example Pack - 24 Modules
VoltageMax: 192 VDC I Nom: 173 VDC I Min: 144 VDC
DimensionsHeight: 2400 mm I Diameter: 360 mm I 230 kg
Safety Specifications
Thermal Runaway Anti-PropagationPassive cell-level thermal runaway isolation
Fire Suppression Not applicable
Disconnect CircuitCell individual fail-safe for over-temperature and over-voltage
Short Circuit ProtectionFuses included on cell, module and pack level
Emergency Stop CircuitHard-wired
Ground Fault DetectionIntegrated
Disconnect Switchgear RatingFull load
General Specifications
Class ComplianceDNV GL, Lloyds Register, Bureau Veritas, ABS, RINA
Type ApprovalNot applicable
Ingress ProtectionSystem: IP23
Vibration and ShockUNT38.3, DNV 2.4
EMCIEC 60945-9

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