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Panthalassa
Autonomous ocean nodes for low-cost renewable energy
About Panthalassa
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.
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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.
At a glance
- Status
- Operational
- Founded
- 2016
- Headquarters
- Portland, United States
- Employees
- 120
- Open positions
- 26
- Dealroom signal
- 93.2/100
- Sub-industry
- Clean Energy
- Sector
- Energy, Sustainable Development Goals, Verified Unicorns and $1B Exits, Climate Tech, Blue Economy, Renewable Energy, Data Centers, Blue Renewable Energy, DT and LS, science-based
- Technology
- Hardware, Deep Tech
- Business model
- Manufacturing
- Client focus
- b2b
Latest news
Press, funding announcements and product moves mentioning 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 | — |
Growth signals
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.
Open positions
Similar companies
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Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Series A24 investors entered at this stage
Founders Fund
Unless
Gigascale Capital
Lowercarbon Capital
WovenEarth Ventures
Peter Thiel
Western Technology Investment
Supermicro
Time Ventures- RRResilience Reserve
Max Levchin
Marc Benioff
John Doerr
SciFi VC
Sozo Ventures
Portland Seed Fund
Dylan Field
Future Positive
Fortescue
Leblon Capital
Hanawa Group
Nimble Partners
SIG-SSI- PLPlanetaryVC
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Panthalassa on X, ranked by likes and reposts, corporate channels excluded.
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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