Company lists · Data refreshed September 2026
Top 25 Geothermal equipment system manufacturers worldwide
RevenueBase identified 1,724 geothermal equipment system manufacturers worldwide as of September 2026 and tracks 17,024 professional contacts across them, including 4,857 with verified work emails. The United States is the largest market and Calgary the largest hub.
This list covers geothermal equipment system manufacturers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026. Country and city lists for geothermal equipment system manufacturers follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest geothermal equipment system manufacturers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,281 contacts → | ||||
Indirect evidence “With over five decades of experience, Ormat Technologies, Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 439 contacts → | ||||
Indirect evidence “1969 yılında faaliyetlerine başlayan ve 2013 yılı itibarıyla iklimlendirme sektöründe Avrupa’nın ilk üç şirketi arasında yer alan BDR Thermea Group bünyesine katılan Baymak…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 429 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 365 contacts → | ||||
Indirect evidence “Vaillant Group, ısıtma ve havalandırma teknolojisi alanlarında uluslararası pazarlarda lider bir kuruluştur.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 298 contacts → | ||||
Partial evidence “CERREY, a leading Mexican company, is one of the main manufacturers of steam generators in the Americas.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 247 contacts → | ||||
Partial evidence “Thermaprime Drilling Corporation Geothermal, Oil & Gas Drilling BASIC SERVICES Well Construction Management • Drilling of geothermal wells • Drilling of onshore oil and gas wells…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 224 contacts → | ||||
Indirect evidence “WaterFurnace International, Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 183 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 178 contacts → | ||||
Partial evidence “ClimateMaster’s role as a domestic energy and geothermal heating and cooling leader extends back to the late 1950s when the company was first founded in Florida.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 149 contacts → | ||||
Strong evidence “EGESIM, founded in 1994, is an energy solutions company focused on industrial electrical and automation systems and EPC (engineering, procurement and construction) of geothermal…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 143 contacts → | ||||
Indirect evidence “Die Marke Buderus ist Teil der Bosch Thermotechnik GmbH und steht seit 1731 für Spitzenprodukte im Bereich Heizsysteme Ob regenerativ oder klassisch betrieben – unsere Heizsysteme…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 136 contacts → | ||||
Indirect evidence “WIR SORGEN FÜR IHR WOHLBEFINDEN.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 128 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 124 contacts → | ||||
Indirect evidence “Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 118 contacts → | ||||
Indirect evidence “CTC är en av Europas ledande tillverkare av värmeprodukter.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 118 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 115 contacts → | ||||
Indirect evidence “The Ecoforest group of companies was incorporated in Vigo in 1959 by owner and founder José Carlos Alonso Martinez specializing in the energy sector.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 108 contacts → | ||||
Indirect evidence “Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 105 contacts → | ||||
Indirect evidence “SYCHEM S.A.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 92 contacts → | ||||
Indirect evidence “Fundada en el año 2010, Gia Group es una compañía española líder en ventas con presencia a nivel mundial.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 87 contacts → | ||||
Partial evidence “Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 84 contacts → | ||||
Indirect evidence “Pars Anatolian is the Turkey's youngest and most dynamic drilling contractor company which holds numerous patents and has brilliant ideas as a team.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 81 contacts → | ||||
Strong evidence “Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 80 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 77 contacts → | ||||
Indirect evidence “HS Orka is the largest privately owned power company in Iceland.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: geothermal equipment system manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names geothermal equipment system manufacturers.
- Partial evidence
- Its own public description names part of geothermal equipment system manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name geothermal equipment system manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 1,724 geothermal equipment system manufacturers worldwide
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Geothermal equipment system manufacturers worldwide at a glance
As of Sep 30, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among geothermal equipment system manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for geothermal equipment system manufacturers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “geothermal equipment system manufacturers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names geothermal equipment system manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among geothermal equipment system manufacturers, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 4,857 across the full list. 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 September 30, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Geothermal equipment system manufacturers by location
13 lists · largest firstEvery Geothermal equipment system manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal equipment system manufacturers based in the United States267
- Geothermal equipment system manufacturers based in Germany113
- Geothermal equipment system manufacturers based in France109
- Geothermal equipment system manufacturers based in Spain82
- Geothermal equipment system manufacturers based in Canada77
- Geothermal equipment system manufacturers based in Italy76
- Geothermal equipment system manufacturers based in the United Kingdom75
- Geothermal equipment system manufacturers based in the Netherlands59
- Geothermal equipment system manufacturers based in Türkiye55
- Geothermal equipment system manufacturers based in Switzerland44
- Geothermal equipment system manufacturers based in Belgium41
- Geothermal equipment system manufacturers based in Finland35
- Geothermal equipment system manufacturers based in Sweden25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names geothermal equipment system manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many geothermal equipment system manufacturers are there worldwide?
RevenueBase identified 1,724 geothermal equipment system manufacturers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Ormat Technologies, INC, headquartered in Reno, tops this list with the largest team on record.
Which country has the most geothermal equipment system manufacturers?
The United States leads with 267 companies, followed by Germany (113) and France (109). Every geothermal equipment system manufacturers list by country and city is linked on this page.
Which city has the most geothermal equipment system manufacturers?
Calgary leads with 14 headquartered companies, followed by Madrid (11) and Houston (10).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,857 verified decision-maker contacts tracked across these 1,724 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 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 Smart Search, 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.