Axonn
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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
Our scalable, modular energy management and storage system is specifically developed for the demanding underwater environment. Using Lithium-ion battery technology and our integrated intelligent energy management system named Axonn, Halo provides a reliable, uninterrupted power supply to underwater infrastructure as a temporary, permanent or back-up solution.
A smart solution
Halo is an alternative to umbilical cables, which are prone to failure with age. It’s an easily installable, autonomous power source solution that stands the test of time.
Key features
- Fully rechargeable, Halo can be integrated with marine renewable energy converters to create zero-emission power systems.
- 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.
- Energy capacity and power output are scalable and configurable to suit your needs.
- Charge in-situ using clean, renewable power generation or low-specification umbilical from topside or shore – even temporary downlines from a vessel can be used, ideal for temporary or back-up power solutions.
- 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.
Halo Applications
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01. Greenfield Developments
With clean energy solutions, we can reduce the energy industry’s carbon footprint. Halo uses a modular battery system, designed specifically for the underwater environment. That means it can be implemented into greenfield developments in several ways, across multiple sectors:
- Energy storage for renewable energy integration, powering underwater assets with offshore renewables and generating electricity on demand.
- Supplement power supplies by providing an energy source for subsea system peak demands, letting the power distribution system be sized on average demand rather than peak system loads – that means cutting costs, too.
- Can be located centrally or distributed among the underwater infrastructure.
- Designed to be input / output agnostic, meaning we can easily scale the system to various energy capacities, accept charge from a wide range of sources, and adapt the output condition to suit the application.
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02. Brownfield Power Remediation
Halo offers an alternative to electrical 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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03. 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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04. 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. Being modular, energy capacities of several hundred kWh can be deployed – 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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05. 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