Company lists · Data refreshed October 2026

Top 25 Ocean thermal energy consultants worldwide

RevenueBase identified 158 company matches for ocean thermal energy consultants worldwide as of October 2026 and tracks 1,227 professional contacts across them, including 459 with verified work emails. The United States is the largest market and Edinburgh the largest hub.

This list covers company matches for ocean thermal energy consultants worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 19, 2026. Country and city lists for ocean thermal energy consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 19, 2026 How this list was built
158Companies
1,227Contacts tracked
459Verified emails
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The 25 largest ocean thermal energy consultants worldwide

Ranked by team size
Top 25 of 158 company matches for ocean thermal energy consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPortland, OR, United StatesHQ recorded Oct 19, 202651-200122 contacts →

Exact match

“The open ocean is Earth’s largest and most power-dense renewable energy resource.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact matchRennes, FranceHQ recorded Oct 19, 202651-20059 contacts →

Exact match

“Sweetch Energy is a renewable energy company pioneering osmotic power, turning the natural salinity of water into clean, 24/7, and cost-efficient electricity.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchWaimanalo, HI, United StatesHQ recorded Oct 19, 202611-5047 contacts →

Exact match

“Makai Ocean Engineering was founded in 1973 as a diversified ocean engineering company focused on providing design engineering and development services to a broad range of…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact matchVastra Frolunda, SwedenHQ recorded Oct 19, 202651-20043 contacts →

Exact match

“Minesto is a leading ocean energy technology company on a mission to minimise the global carbon footprint of the energy industry by enabling commercial power production from the…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact matchOakland, CA, United StatesHQ recorded Oct 19, 202611-5040 contacts →

Exact match

“Ocergy is an innovative company focusing on the development of complex ocean systems solving energy and environmental challenges in a sustainable manner.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchKiel, GermanyHQ recorded Oct 19, 202651-20033 contacts →

Exact match

“SubCtech develops state-of-the-art maritime technologies in two business units: Ocean Power Our fully approved high-efficiency Li-Ion batteries guarantee high-reliability AND…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchNorth Fremantle, AustraliaHQ recorded Oct 19, 202611-5027 contacts →

Exact match

“Carnegie Clean Energy Limited is an Australian, ASX-listed (ASX: CCE) wave energy technology developer.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchCharlottesville, VA, United StatesHQ recorded Oct 19, 202611-5024 contacts →

Exact match

“C-Power™ is an ocean power company, tapping the world’s largest battery, our oceans, to supply cost-effective, dependable, and predictable energy generation systems for our…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchSt. John's, NL, CanadaHQ recorded Oct 19, 202611-5024 contacts →

Exact match

“Angler Solutions is an innovation-driven consulting firm with international experience providing strategic advisory and project delivery services across our evolving energy and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchHelsingør, DenmarkHQ recorded Oct 19, 202611-5019 contacts →

Exact match

“Wavepiston is a revolutionary technology that harnesses wave energy to produce clean electricity and desalinated water.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchOslo, NorwayHQ recorded Oct 19, 202611-5018 contacts →

Exact match

“FSubsea is a Norwegian ocean technology company focused on climate-smart subsea desalination systems, as well as robust subsea pumping systems for a variety of energy and green…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchPortland, ME, United StatesHQ recorded Oct 19, 20261-1017 contacts →

Exact match

“Kelson Marine is an ocean engineering firm that partners with its clients to solve the challenges of producing food and energy in the harsh world of the ocean.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchFairfax Station, United StatesHQ recorded Oct 19, 202611-5016 contacts →

Exact match

“Applied Ocean Sciences (AOS) is a collective of ocean consultants, powered by our passion to do the highest caliber science, push the boundaries of technology and innovation, and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact matchCape Town, South AfricaHQ recorded Oct 19, 20261-1015 contacts →

Exact match

“Sea Technology Services is a Cape Town based Oceanographic Engineering and Services company, established in 1995.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchBordeaux, FranceHQ recorded Oct 19, 20261-1014 contacts →

Exact match

“Founded in Bordeaux, France, in 2015, SEATURNS has developed an innovative, and cost-effective wave energy solution to meet the urgent global demand for sustainable and renewable…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchThe Hague, NetherlandsHQ recorded Oct 19, 20261-1013 contacts →

Exact match

“Safeguarding our beautiful planet for future generations and pushing boundaries of technology are at the core of our business.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchBrest, FranceHQ recorded Oct 19, 202611-5013 contacts →

Exact match

“Depuis plus de 20 ans, Actimar apporte son expertise au service de la mer.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchBordeaux, FranceHQ recorded Oct 19, 20261-1013 contacts →

Exact match

“Énergie de la Lune est un cabinet d'ingénierie spécialisé en Énergies Marines Renouvelables et en génie océanographique.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchPhiladelphia, PA, United StatesHQ recorded Oct 19, 202611-5013 contacts →

Exact match

“Ocean Thermal Energy (OTE) Corporation is a leader in designing and developing secure ocean-based power plants.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchNew Bedford, MA, United StatesHQ recorded Oct 19, 202611-5012 contacts →

Exact match

“LPS addresses the problems of cost, environmental impact, and regulatory complexity in hydropower and ocean energy.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchPembroke Dock, United KingdomHQ recorded Oct 19, 202611-5011 contacts →

Exact match

“Founded in 2012, Bombora is an award-winning ocean energy company from Australia with operational headquarters in Pembrokeshire, Wales.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22Exact matchKailua-Kona, HI, United StatesHQ recorded Oct 19, 20261-1011 contacts →

Exact match

“Global OTEC has designed a floating platform capable of converting solar heat energy stored in the oceans into renewable baseload power.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchHaugesund, NorwayHQ recorded Oct 19, 20261-1010 contacts →

Exact match

“Tidal Sails AS, an independent, privately held closed corporation based in Haugesund, Norway brings to market a ground breaking technology to extract kinetic energy from slow…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchNedlands, AustraliaHQ recorded Oct 19, 20261-1010 contacts →

Exact match

“Backed by more than 20 years in the offshore engineering industry, WaveX is a vertically integrated renewable energy business that helps coastal and offshore infrastructure lower…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchChuo-ku, JapanHQ recorded Oct 19, 20261-1010 contacts →

Exact match

“Technology startup of offshore renewable energy devices which include offshore floating wind turbine, floating marine current turbine, and wave energy converter.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 158 ocean thermal energy consultants worldwide

See the full list, filter by size, metro and specialty, and access 459 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ocean thermal energy consultants worldwide at a glance

As of Oct 19, 2026
37.4%Verified-email coverage
7.8Average contacts per company
1-10Median size (employees)
2.5%Largest-city concentration · Edinburgh
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
108
11-50
39
51-200
9
501-1,000
1
1,001-5,000
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for ocean thermal energy consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “ocean thermal energy consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 459 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Ocean thermal energy consultants by location

1 lists · largest first

Every Ocean thermal energy consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “ocean thermal energy consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ocean thermal energy consultants are there worldwide?

RevenueBase identified 158 company matches for ocean thermal energy consultants worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Panthalassa tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most ocean thermal energy consultants?

The United States leads with 39 companies. Every ocean thermal energy consultants list by country and city is linked on this page.

Which city has the most ocean thermal energy consultants?

Edinburgh leads with 4 company records, followed by London (4) and Portland (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 459 professional contacts with verified work emails tracked across these 158 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.