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Subsea energy storage
Subsea energy storage
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- Halo: energy storage on the seabed
- Reliable and uninterrupted power to subsea assets
- State-of-the-art Lithium-ion battery technology
- Gravity foundation
- Simple to install and recover
- Stable and secure in operation
- Restore power to wells with electrical supply problems
- Energy security, overcoming intermittency of renewable energy systems
- Enable all-electric and umbilical-less subsea developments
- Power out: high quality power supply to subsea assets
- Power in: flexible in-situ charge capability
- Integrated remote communications
- Additional instrumentation options
- Impact and dropped object protection
- Fishing friendly structure options
- Modular battery architecture
- Scalable energy storage capacity
- AC or DC power output, customisable for the application
- Intelligent energy management and power delivery
- Multi-layered integrated protection systems
- Robust mechanical design
- Cost-effective remedy for umbilical failure
- Designed for marine renewable energy integration
- Emission free tie-backs and clean energy systems
Overview
Intelligent subsea power solutions bringing reliability and efficiency to your subsea operations
Ensuring reliable, uninterrupted subsea power delivery, Halo is a patented, scalable and modular subsea power delivery solution with an integrated Axonn intelligent energy management system.
Halo is an alternative to umbilical cables, which are prone to failure with age. It’s an easily installable, autonomous power source solution that uses our Charge battery units.
Intelligent by design
At the core of Halo is Axonn, Verlume’s intelligent energy management system. Axonn continuously monitors, manages, and optimises energy flow to multiple subsea loads – ensuring stable, efficient power delivery and complete visibility of system status.
This intelligent layer allows clients to manage critical subsea equipment remotely with confidence. Verlume’s Axonn is the only management system of its kind available on the market.
Reliable subsea power
Operating at depths of up to 3,000m or greater, Halo is a proven solution to your subsea power challenges.
To guarantee enhanced operational range and dependability, each battery unit undergoes rigorous pressure testing to full operational depth. Such extensive testing ensures that the batteries are not only reliable but also durable under the extreme pressures of deep-sea environments.
Proven offshore performance
Halo has been field-proven in real-world offshore environments through multiple projects around the world such as:
- A US-based ocean power company required an intelligent energy storage and management system to integrate into its Autonomous Offshore Power System. A Halo system was supplied to be deployed off the coast of Hawaii for a defence-related demonstration as part of RIMPAC, the world’s largest international maritime military exercise. The goal was to ensure stable renewable energy delivery and support autonomous operations in a remote offshore defence setting. Read more here.
- In the Renewables for Subsea Power (RSP) project off Orkney, Scotland, Halo operated successfully for over 12 months, providing continuous subsea power and communications as part of an integrated offshore power system with a wave energy converter. The project showcased Halo’s ability to deliver reliable, autonomous energy storage and management in one of Europe’s harshest marine test environments. Read more here.
Key features
- State-of-the-art battery technology provides maximum energy density, safety and durability.
- Verlume’s Axonn intelligent energy management system autonomously maximises the available energy in real-time, providing an efficient, resilient and dependable system.
- Fully rechargeable in-situ, Halo can be integrated with marine renewable energy converters to create zero-emission power systems.
- Electrical accumulation provides peak power on demand, allowing power supply and distribution de-rating, all-electric systems and long distance tie-backs.
- Offered as a standalone structure or can be integrated into other subsea equipment, like XT, Manifold or AUV/ROV docking garage.
Contact us to find out how we can help solve your subsea power challenges.
Halo Applications
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01. Brownfield Power Remediation
Halo offers an alternative to umbilical cables, which are expensive to install and often need repaired or replaced over time. It’s quick to setup, too. And with it, you’ll get a fixed capacity energy supply – plus a range of charge options beyond that, including:
- Recharge on the seabed, using downline from surface vessel.
- Hot swap with fully recharged replacement unit.
- Supplement installed capacity with marine renewable energy converters, such as wind, wave or tidal energy systems.
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02. Asset Electrification
To create sustainable energy systems, asset electrification is vital to reduce or erase the carbon emissions with offshore operations. For both underwater and topside assets, Halo can help by providing:
- Energy security, overcoming the intermittency challenges of integrating clean, renewable power generation to offshore assets (topside and subsea).
- MWh-scale energy storage, for long term supply to low power assets, or for short duration high power applications and services.
- A gateway for renewable energy into existing and new assets, such as wind, wave and tidal energy for platforms, aquaculture farms, subsea infrastructure and more.
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03. ROV/AUV Charging
Residency for autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs) can offer significant environmental and cost benefits. Reducing the reliance on surface vessels cuts out high costs and fuel dependency by removing the tether between the vehicle and the surface. But the availability of power can be a challenge over extended periods of residency. That’s where Halo comes in.
Halo’s system can easily provide power to a subsea garage, providing multiple charge cycles for the vehicle and for subsea data processing / transmission to surface. Its variable charge interface also gives the AUV provider a range of options for very long-term deployments, by integrating a power source into the assembly.
It can be configured to buffer the power supply and act as an accumulator, providing a clean and stable power supply for fast charging – much quicker than what’s available directly from the renewable power source.
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04. Decommissioning and Remote Monitoring
By using a remote power source to monitor underwater wells, you can strip out all other infrastructure leaving just the wellhead and environmental barriers – saving time and money.
Remote monitoring and measuring is an essential tool for many sectors, and Halo can be used as a power source across an ever-growing range of applications:
• Underwater data gathering and processing
• Decommissioning / well monitoring
• Powering oceanographic sensors
• Internet of Things
• Aquaculture systems
• Site / perimeter monitoring and defence