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Panthalassa

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Autonomous ocean nodes for low-cost renewable energy

Portland, United StatesFounded 2016Energy
Valuation $1–2.5B Last recorded · 2026
Headcount 100–500 Current team size
Total funding $100–500M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Panthalassa and the history behind them.

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.

Source: Dealroom company data

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.

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Funding history

3 recorded events

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
Showing the latest 2 of 3 recorded eventsBook a demo for the full funding history →

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%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Investors

24 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A24 investors entered at this stage

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.

Global footprint

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

Market sentiment

Posts on X, past 7 days

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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