Ocean-powered AI data center startup Panthalassa raising $225M at nearly $2B valuation

Portland-based startup Panthalassa is reportedly raising $225 million at a near-$2 billion valuation to build ocean-powered AI data centers. Co-led by 8090 Industries and Hanwha Asset Management, the round would double the company's valuation from May 2026. Panthalassa's 85-meter floating nodes convert wave energy into electricity to power onboard GPUs, using seawater for cooling and satellites for data transmission. While promising cheap, clean power, the technology faces severe marine risks.

Panthalassa $225M fundraising round

• ▪The reported $225 million fundraising round for Panthalassa is being discussed with 8090 Industries and Hanwha Asset Management as co-leads.
• ▪Portland, Oregon-based startup Panthalassa is reportedly raising approximately $225 million in a financing round to fund its ocean-powered AI data centers.
• ▪Hanwha Asset Management previously backed Panthalassa's prior $140 million financing round in May 2026.

AI infrastructure energy demand

• ▪Terrestrial AI data centers face challenges such as years-long waits for grid access and local opposition over electricity consumption, water use, and community impact.
• ▪Growing electricity demand for artificial intelligence has prompted technology companies to seek alternative energy sources, including ocean wave energy.

Ocean wave-powered data center technology

• ▪Panthalassa's ocean nodes utilize surrounding cold seawater to cool servers inside sealed containers, reducing the need for traditional air-conditioning and freshwater cooling.
• ▪Panthalassa's full-size ocean nodes are designed to measure roughly 85 meters (280 feet) and generate approximately 1 megawatt of continuous power under suitable conditions.
• ▪Panthalassa plans to process AI workloads on its ocean nodes and transmit data via low-Earth-orbit satellite connections, bypassing the need for subsea electricity cables.
• ▪Panthalassa, founded in 2016 by CEO Garth Sheldon-Coulson, designs autonomous floating steel structures called nodes that convert wave movement into electricity to run onboard GPUs.

Commercial deployment timeline

• ▪Panthalassa targets its Ocean-3 generation nodes for pilot deployment in the northern Pacific Ocean in 2026, with commercial operations planned for 2027.
• ▪Panthalassa conducted sea trials of its Ocean-2 prototype off Washington state in 2024, following the deployment of its Ocean-1 prototype in 2021.

Technical risks at sea

• ▪Panthalassa's offshore data center model faces potential technical and economic challenges including saltwater corrosion, storms, marine growth, satellite connectivity, and maintenance logistics.
• ▪Wave energy projects have historically struggled to achieve the commercial scale of solar and wind energy, adding risk to Panthalassa's autonomous offshore data center fleet.

Rapid valuation growth

• ▪Panthalassa's reported $225 million financing round would value the startup at nearly $2 billion, roughly doubling its valuation from three months prior.
• ▪In May 2026, Panthalassa raised $140 million in funding at a valuation close to $1 billion from investors including Peter Thiel, John Doerr, and TIME Ventures.

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