Charge – USA (Gulf of America)

Case Study: 21 Days of Reliable Subsea Monitoring Power in the Gulf of America

Client Overview:

An offshore Monitoring Service company required a short-term, autonomous power source in the Gulf of America to support an environmental monitoring system for oil leak detection. The deployment site was remote, with limited infrastructure, and required rapid integration into existing equipment.

Challenge:

The client needed a temporary but highly reliable subsea power solution with:

Continuous power availability for 21 days
Integration into a space-constrained, client-supplied skid
Ability to power multiple sensors and detection equipment
A quick recharge cycle to minimise operational downtime

Objectives:

Enable continuous environmental monitoring for 21 days
Rapid delivery and deployment of a compact subsea power unit
Ensure seamless compatibility with existing detection systems

Solution:

Verlume supplied a 35 kWh Charge subsea battery system with a 24V DC output, optimised for compact integration and fast recharging. Key features included:

System Dimensions: 500 mm diameter × 2000mm length
Full Recharge Time: 6 hours using the accompanying Deck Charger
Custom Fit: Integrated within a limited-footprint skid provided by the client
Operational Flexibility: Recharge performed topside between deployments

Deployments took place in Q2 2024-Q1 2025 in the Gulf of America, with the Charge system fully integrated into the client’s infrastructure.

Results:

21 days of continuous, autonomous subsea power delivery
Seamless integration with client equipment, enabling rapid deployment
Supported full operation of environmental monitoring system throughout mission duration
Successfully enabled short-term oil leak monitoring in a remote offshore location

Key Takeaways:

Modular, compact design allowed for easy integration
Fast recharge capability ensured minimal operational disruption
Reliable power output in challenging offshore conditions

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