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Panthalassa
Energy · Portland, United States · Founded 2016
Autonomous ocean nodes for low-cost renewable energy MoreLess
Panthalassa is a renewable energy and ocean technology company founded in 2016 by Garth Sheldon-Coulson and Brian Moffat. The company is developing autonomous, floating nodes designed to harness the energy from open-ocean waves to generate electricity.
The technology consists of a simple, solid-state spherical structure, approximately 50 meters in diameter, with a neck extending 60-70 meters below the surface. As wave motion moves the node, water is pumped into a pressurized reservoir and then flows through a single turbine to generate continuous power. This design aims to achieve a high capacity factor, delivering power up to 90% of the time, and intends to keep the energy generated in the ocean to power onboard applications. Potential uses include running AI computing clusters and producing clean fuels like green hydrogen directly at sea.
The founders' backgrounds informed the company's direction; Garth Sheldon-Coulson was previously a senior investment associate and AI researcher, while Brian Moffat has a decade of research experience in ocean energy. Panthalassa's team includes professionals from aerospace companies, research universities, and naval architecture firms. The company has raised $78.1M in funding from investors including Founders Fund, Gigascale Capital, and Lowercarbon Capital to support its development and deployment efforts.
Keywords: ocean energy, wave power, renewable energy, autonomous technology, floating nodes, green hydrogen production, off-grid power, marine technology, clean fuels, AI compute at sea, sustainable energy, energy generation, clean-tech, terawatt scale energy, ocean engineering
Company overview
Panthalassa company information
The essential company record, classifications and operating signals in one place.
- Status
- Operational
- Founded
- 2016
- Headquarters
- Portland, United States
- Employees
- 120
- Open positions
- 26
- Dealroom signal
- 93.2
Valuation & funding
Panthalassa funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES BOther financing | May 2026 | $140M | $1B | Western Technology Investment · Supermicro · Time Ventures · Resilience Reserve | ↗ |
| LATE VCOther financing | Jan 2025 | $18M | $72M | Undisclosed | — |
| SERIES AOther financing | Feb 2022 | $60M | $240M | Founders Fund · Unless · Gigascale Capital · Lowercarbon Capital | — |
Growth signals
Panthalassa website traffic
Latest recorded traffic for Panthalassa is 30K monthly website visits, up 50% over the last three months. Panthalassa's team grew 62.2% over the past year.
Hiring
Open positions at Panthalassa
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Comparisons
Panthalassa compared with similar companies
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Talent graph
Panthalassa's talent
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Global footprint
Where Panthalassa has talent and traffic
team presence
In the news
Latest news about Panthalassa
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Market sentiment
What the market is saying about Panthalassa
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Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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