Company lists · Data refreshed November 2026

Top 25 Commercial geothermal engineers worldwide

RevenueBase identified 1,912 company matches for commercial geothermal engineers worldwide as of November 2026 and tracks 15,768 professional contacts across them, including 4,985 with verified work emails. The United States is the largest market and Calgary the largest hub.

This list covers company matches for commercial geothermal engineers 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 November 6, 2026. Country and city lists for commercial geothermal engineers 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 Nov 6, 2026 How this list was built
1,912Companies
15,768Contacts tracked
4,985Verified emails
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The 25 largest commercial geothermal engineers worldwide

Ranked by team size
Top 25 of 1,912 company matches for commercial geothermal engineers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchReno, NV, United StatesHQ recorded Nov 6, 20261,001-5,0001,328 contacts →

Exact match

“Clean, reliable energy solutions provided by geothermal power, recovered energy, and energy storage solutions are our expertise, commitment, and focus.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchJakarta Selatan, IndonesiaHQ recorded Nov 6, 2026201-500591 contacts →

Exact match

“PT Geo Dipa Energi (Persero) is a State-Owned Company specializing in Geothermal Energy”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchKgs. Lyngby (copenhagen), DenmarkHQ recorded Nov 6, 2026201-500497 contacts →

Exact match

“Founded in 1943, Geo is a market leading engineering consultancy company and contractor, specialised within the fields of geotechnical and environmental engineering (geoteknik og…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMexicoHQ recorded Nov 6, 2026201-500471 contacts →

Exact match

“Constructora y Perforadora LATINA (“LATINA”) Es una empresa privada con mas de 60 años de experiencia en el sector de energía y actualmente es la principal empresa en…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchToruń, PolandHQ recorded Nov 6, 20261,001-5,000347 contacts →

Exact match

“We deliver innovative geophysical, geological and geotechnical solutions for energy sector as well as renewable energy in Poland and worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchHouston, CA, United StatesHQ recorded Nov 6, 202651-200285 contacts →

Exact match

“Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchPasig, PhilippinesHQ recorded Nov 6, 2026501-1,000279 contacts →

Exact match

“Thermaprime Drilling Corporation Geothermal, Oil & Gas Drilling BASIC SERVICES Well Construction Management • Drilling of geothermal wells • Drilling of onshore oil and gas wells…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchUnited StatesHQ recorded Nov 6, 2026201-500206 contacts →

Exact match

“Marriott Drilling Group is the UK’s only remaining truly independent land Drilling Specialist, trusted for over 75 years to deliver safe, efficient and technically robust drilling…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchVoorhees, NJ, United StatesHQ recorded Nov 6, 202651-200152 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchIcelandHQ recorded Nov 6, 202651-200137 contacts →

Exact match

“ABOUT http://iceland-drilling.com/ Iceland Drilling Ltd is a leading high technical company in the field of high temperature geothermal drilling and has many decades of experience…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchKopavogur, IcelandHQ recorded Nov 6, 2026201-500136 contacts →

Exact match

“Mannvit, is now part of COWI.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchAnkara, TürkiyeHQ recorded Nov 6, 20261,001-5,000127 contacts →

Exact match

“Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMount Kisco, NY, United StatesHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“Dandelion Energy is the nation’s leading residential geothermal provider, on a mission to make the world’s most efficient heating and cooling technology accessible to everyone.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSouth Jakarta, SingaporeHQ recorded Nov 6, 2026201-500118 contacts →

Exact match

“KS Orka Renewables is one of the most ambitious geothermal developers in the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchFrisco, TX, United StatesHQ recorded Nov 6, 202651-200112 contacts →

Exact match

“Founded in Blade Energy Partners is an independent consulting company known for overcoming the challenges of complex multidisciplinary projects in the oil, gas, and geothermal…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchArmonk, NY, United StatesHQ recorded Nov 6, 202651-200111 contacts →

Exact match

“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchAthens, GreeceHQ recorded Nov 6, 2026201-500107 contacts →

Exact match

“SYCHEM S.A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchTaupo, New ZealandHQ recorded Nov 6, 202651-20095 contacts →

Exact match

“MB Century is New Zealand's only end-to-end world-class renewable energy solutions provider specialising in Drilling, Reservoir & Wireline, Engineering Design, Precision…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAnglet, FranceHQ recorded Nov 6, 202651-20092 contacts →

Exact match

“Etchart Energies, anciennement Arrambide, est une filiale du groupe Etchart depuis plus de 10 ans maintenant.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchJakarta, IndonesiaHQ recorded Nov 6, 202611-5089 contacts →

Exact match

“Welcome to PT OPAC Barata, your guide through the petroleum jungle, delivering a wide range of services tailored to the unique demands of the oil and gas, mining, and geothermal…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchArnhem, NetherlandsHQ recorded Nov 6, 202651-20083 contacts →

Exact match

“At IF Technology we are committed to the transition from the use of fossil fuels to sustainable energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchGrindavík, IcelandHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“HS Orka is the largest privately owned power company in Iceland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchGreenville, IL, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchPirkkala, FinlandHQ recorded Nov 6, 202651-20072 contacts →

Exact match

“Rototec provides geoenergy based heating and cooling for large properties.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchAuckland, New ZealandHQ recorded Nov 6, 202651-20071 contacts →

Exact match

“Founded in 1994, MTL specialises in engineering design and project management for renewable energy, water infrastructure and industrial projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,912 commercial geothermal engineers worldwide

See the full list, filter by size, metro and specialty, and access 4,985 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Commercial geothermal engineers worldwide at a glance

As of Nov 6, 2026
31.6%Verified-email coverage
8.2Average contacts per company
1-10Median size (employees)
1.0%Largest-city concentration · Calgary
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,134
11-50
604
51-200
110
201-500
15
501-1,000
3
1,001-5,000
4

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 commercial geothermal engineers are linked below.
What qualifies
Company records worldwide whose business descriptions match “commercial geothermal engineers” 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 4,985 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 November 6, 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.

Commercial geothermal engineers by location

10 lists · largest first

Every Commercial geothermal engineers 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 “commercial geothermal engineers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many commercial geothermal engineers are there worldwide?

RevenueBase identified 1,912 company matches for commercial geothermal engineers worldwide as of November 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?

Ormat Technologies, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most commercial geothermal engineers?

The United States leads with 287 companies, followed by France (215) and Germany (140). Every commercial geothermal engineers list by country and city is linked on this page.

Which city has the most commercial geothermal engineers?

Calgary leads with 19 company records, followed by Berlin (16) and Paris (15).

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 4,985 professional contacts with verified work emails tracked across these 1,912 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 November 6, 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.