Corvus Orca Energy

Designed and purpose built for the maritime industry, the Corvus Orca Energy storage system (ESS) created a shift in the maritime energy storage segment. No other ESS matches the installation count of Orca Energy. Continuous focus on development and high safety levels have set the industry standard for all maritime ESSs.


Orca Energy is ideal for applications where you need to move large amounts of energy multiple times per day, efficiently and at low cost. Orca Energy is suitable for both all-electric and hybrid installations.

  • Ferries
  • Cruise ships
  • Ro/Ro – Ro/Pax
  • Yachts
  • Offshore vessels
  • Rigs
  • Tugs
  • Fishing vessels
  • Merchant vessels
  • Port cranes
  • Shore charging
  • Fish farms

Contact us to help you find out how to save fuel or perhaps even replace a diesel genset.


  • High C-Rates – up to 6C peak C-rate
  • Safety beyond class requirements
  • Industry-proven 4th generation BMS
  • Flexible and modular design
  • Low installation and commissioning time
  • Contained power connections – enhanced reliability
  • Enhanced EMI immunity design for maritime environments
  • Designed for pack voltages up to 1200VDC
  • Scalable beyond 10MWh
  • Easily monitored through the Watchman™ ESS Advisory Portal

Corvus Energy safety innovations

Passive single-cell Thermal Runaway (TR) Isolation

  • True cell-level thermal runaway isolation – TR does not propagate to neighbouring cells
  • Isolation is not dependent on active cooling


Exceeds Class and Flag requirements for TR gas venting

  • Integrated TR gas exhaust system
  • Easily vented to external atmosphere rather than to the battery room


Additional fire suppression system not required.

Technical Specifications

Performance Specifications
C-Rate - Peak6C
C-Rate - Continuous3C
Operational Specifications
Pack Sizing350-1200 VDC / 40-136 kWh
Standard Pack example
Energy124.3 kWh
VoltageMax: 1100 VDC | Min: 800 VDC
CoolingForced Air / Liquid Cooling
Dimensions (Vertical)Height: 2241 mm | Width: 865 mm | Depth: 738 mm
Dimensions (Horizontal)Height: 1260 mm | Width: 1730 mm | Depth: 738 mm
Weight1620 kg (3571 lb)
General Specifications
EMCIEC 61000-4 | CISPR16-1-2 | IEC60945-9
Ingress ProtectionSystem: IP44
Vibration and ShockUN 38.3 | DNV 2.4 | IEC 60068-2-6
Class ComplianceDNV-GL, Lloyds Register, Bureau Veritas, ABS
Type ApprovalDNV-GL, Bureau Veritas, ABS, RINA
Safety Specifications
Voltage Isolation7,2 kV (IEC 60947-2)
Thermal Runaway anti-propagationCell-level | DNV-GL Pt.6 Ch.2 | NMA 2016 circular
Fire suppression recommendedPer SOLAS (machinery space)
Disconnect circuitHardware-based fail-safe for over-temperature and over-voltage
Maximum current parameterUpdated 2x per second
Faults communicatedOver-voltage, under-voltage, over-temperature
Short Circuit protectionFuses included
Disconnect switchgear ratingFull load
Emergency stop circuitHard-wired
Ground fault detectionIntegrated

Market Segments

Cruise and Ferry

Ro-Pax, Car ferry, Cruise, Ferry, Yachts, Passenger

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DP2 vessels, DP3 Vessels, Oil and Gas, Offshore support vessels

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Fishing and Aquaculture

Fish farm support vessel, Fish carrier, Fish farms, Fishing, Fish Farming and Aquaculture

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Tugs and Workboats

Tugs, Workboats

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Subsea Heave Compensation, ROV and Seabed

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Deep sea, Short sea

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