The problem

The ability to operate autonomous systems, sensors, and communications infrastructure in the ocean is critically constrained by power availability. From underwater drones (AUVs) and remote sensors to long-range communication nodes, every system deployed in the ocean today faces a fundamental energy limitation.

• Batteries are short-lived and require costly, frequent replacement.

• Solar panels can be unreliable due to weather conditions, biofouling, and limited energy output.

• Diesel generators are logistically complex and environmentally unfriendly.

This lack of reliable, persistent power affects marine monitoring, defense and security, offshore infrastructure, and ocean conservation. Without a sustainable energy source, real-time ocean data collection, surveillance, and remote operations remain limited in duration and effectiveness.

The solution

Dolphin Labs is revolutionising ocean power with its xNode wave energy converter (WEC), a persistent, renewable energy source designed to power ocean monitoring systems, underwater vehicles, maritime communications, and remote sensing networks.

The xNode taps into the endless energy of ocean waves, solving the power challenge that has long hindered the expansion of autonomous maritime systems. Unlike solar or battery-based solutions, the xNode generates uninterrupted electricity, enabling long-duration, self-sustaining ocean operations.

The xNode consists of two primary components:

• A rigid core housing the power generation, energy storage, and communications payloads

• An inflatable collar, which allows buoyancy control for stability in varied sea states. It can also raise or lower itself to avoid storms, surface threats, or detection

Why we’re excited to invest

Olivia Brooks, Head of Investments at Blue Action Accelerator, says: “Dolphin Labs is setting the foundation for an ocean powered by the ocean itself—enabling real-time environmental monitoring, persistent surveillance, and reliable offshore infrastructure. What Rolle and his team are building is rapidly accelerating access to sea-based, clean, renewable energy, powering operations for a number of exciting industries (shipping, defence, conservation, research, etc.) We’re delighted to welcome them to Blue Action Accelerator and play a part in their exciting journey.”