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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
client focusb2btechnologyHardwaretechnologyDeep Techsub industryClean Energybusiness modelManufacturingsectorSustainable Development GoalssectorVerified Unicorns and $1B ExitssectorClimate TechsectorBlue EconomysectorRenewable EnergysectorData CenterssectorBlue Renewable EnergysectorDT and LSsectorscience-based

Valuation & funding

Panthalassa funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
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
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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.

Latest monthly visits30K 3-month web change+50% 1-year team growth+62.2%
Monthly website visits27 observations · May 2024–Jul 2026
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Comparisons

Panthalassa compared with similar companies

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Showing 8 of the closest matchesCompare every metric →

Talent graph

Panthalassa's talent

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Team profiled 6 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

24 investors on Panthalassa's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Series A 24 investors entered at this stage
Founders Fund
Unless
Gigascale Capital
Lowercarbon Capital
WovenEarth Ventures
Peter Thiel
Western Technology Investment
Supermicro
Time Ventures
Resilience 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
PlanetaryVC

Global footprint

Where Panthalassa has talent and traffic

Workforce by country
2 countries with
team presence
🇺🇸 United States98.8%
🇨🇱 Chile1.2%
2 countries shown

In the news

Latest news about Panthalassa

Recent press, funding announcements, and product moves mentioning Panthalassa — open to read from the original sources.

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Market sentiment

What the market is saying about Panthalassa

An AI-synthesized read of the highest-engagement posts about Panthalassa on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

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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