Company lists · Data refreshed September 2026
Top 25 Geothermal companies worldwide
RevenueBase identified 5,151 geothermal companies worldwide as of September 2026 and tracks 136,184 professional contacts across them, including 39,535 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.
This list covers geothermal companies 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 15, 2026. Country and city lists for geothermal companies 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 companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 9,458 contacts → | ||||
Indirect evidence “Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 5,251 contacts → | ||||
Indirect evidence “We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 4,960 contacts → | ||||
Indirect evidence “Galp is an energy company committed to the development of efficient solutions in its operations and in the integrated services it offers to customers.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 4,272 contacts → | ||||
Indirect evidence “Exxaro Resources Limited is among the top five coal producers in South Africa.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 4,161 contacts → | ||||
Indirect evidence “Statkraft is a leading company in hydropower internationally and Europe’s largest generator of renewable energy.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 3,700 contacts → | ||||
Indirect evidence “GE Vernova is a planned, purpose-built global energy company that includes Power, Wind, and Electrification businesses and is supported by its accelerator businesses of Advanced…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,578 contacts → | ||||
Indirect evidence “Greenko, is one of the World’s leading Energy Transition and Decarbonization solutions company, with an installed Renewable Energy capacity of ~7.5 GW across Wind, Solar and Hydro…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,176 contacts → | ||||
Indirect evidence “Ensign Energy Services Inc.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2,112 contacts → | ||||
Strong evidence “A business unit of Constellation (NASDAQ: CEG), Calpine Corporation is America’s largest generator of electricity from natural gas and geothermal resources with operations in…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,859 contacts → | ||||
Indirect evidence “Mitsubishi Power Americas is creating a future that works for people and the planet through innovative power generation technology and solutions.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,816 contacts → | ||||
Indirect evidence “Noble Corporation today announced that the business combination Maersk Drilling has been successfully completed.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,747 contacts → | ||||
Indirect evidence “Avaada Group is a diversified clean energy conglomerate focused on the global energy transition, providing solutions in renewable power generation, solar PV manufacturing, green…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,461 contacts → | ||||
Indirect evidence “Drax is enabling a zero carbon, lower cost energy future Drax Group is a renewable and flexible generation energy company engaged in renewable power generation, the production of…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,281 contacts → | ||||
Indirect evidence “With over five decades of experience, Ormat Technologies, Inc.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,242 contacts → | ||||
Strong evidence “Indonesia Geothermal Company” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,200 contacts → | ||||
Indirect evidence “PT Pertamina Drilling Services Indonesia (Pertamina Drilling) was established on June 13th, 2008.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,134 contacts → | ||||
Indirect evidence “THE ULTIMATE PARTNER IN WELLBORE PLACEMENT Scientific Drilling International is an independent service provider offering a complete high accuracy wellbore placement and drilling…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,097 contacts → | ||||
Indirect evidence “HMH is a premier drilling solutions provider - delivering a broad portfolio of products and services that are designed to be the safest and most efficient in the industry.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 988 contacts → | ||||
Indirect evidence “Na CTG Brasil, trabalhamos por um único propósito: desenvolver o mundo com energia limpa em larga escala.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 785 contacts → | ||||
Indirect evidence “For 30 years, we have been one of the leading specialists in renewable energies, offering complete project development and other services related to the planning, construction…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 777 contacts → | ||||
Indirect evidence “Founded in 1994 and built on a strong geoscience and data management footprint, LMKR has evolved into a premier technology company expanding its reach to Clean Energy…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 744 contacts → | ||||
Indirect evidence “MALAKOFF CORPORATION BERHAD Registration No.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 687 contacts → | ||||
Indirect evidence “Somos una empresa privada de generación y comercialización de energía con 27 centrales de generación que suman más de 3.100 MW de Capacidad Efectiva Neta.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 645 contacts → | ||||
Indirect evidence “Explomin del Perú S.A.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 587 contacts → | ||||
Indirect evidence “Denbury Inc, is an independent oil and natural gas company.” Source: RevenueBase Database · checked Sep 15, 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 companies. 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 companies.
- Partial evidence
- Its own public description names part of geothermal companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name geothermal companies. 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 5,151 geothermal companies worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 39,535 reachable decision-makers.
Free signup · no credit card
Geothermal companies worldwide at a glance
As of Sep 15, 2026Companies by employee count
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 companies, 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
- 36 countries, largest first: the United States, France, the United Kingdom, Canada, Germany, Italy, Spain, Brazil, Türkiye, Australia and 26 more. Country and city lists for geothermal companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “geothermal companies”. 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 companies), 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 companies, 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, 39,535 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 15, 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 companies by location
36 lists · largest firstEvery Geothermal companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal companies based in the United States1,147
- Geothermal companies based in France330
- Geothermal companies based in the United Kingdom307
- Geothermal companies based in Canada303
- Geothermal companies based in Germany284
- Geothermal companies based in Italy277
- Geothermal companies based in Spain276
- Geothermal companies based in Brazil212
- Geothermal companies based in Türkiye187
- Geothermal companies based in Australia169
- Geothermal companies based in Indonesia151
- Geothermal companies based in the Netherlands140
- Geothermal companies based in India133
- Geothermal companies based in Poland109
- Geothermal companies based in Switzerland101
- Geothermal companies based in Chile94
- Geothermal companies based in Belgium75
- Geothermal companies based in Argentina69
- Geothermal companies based in Mexico68
- Geothermal companies based in Colombia66
- Geothermal companies based in South Africa54
- Geothermal companies based in Sweden54
- Geothermal companies based in Peru53
- Geothermal companies based in Finland47
- Geothermal companies based in Denmark45
- Geothermal companies based in Greece45
- Geothermal companies based in Japan43
- Geothermal companies based in Norway43
- Geothermal companies based in Austria40
- Geothermal companies based in New Zealand40
- Geothermal companies based in Iceland37
- Geothermal companies based in Portugal37
- Geothermal companies based in Czechia32
- Geothermal companies based in Malaysia30
- Geothermal companies based in Ireland27
- Geothermal companies based in Hungary26
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 companies, 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 companies are there worldwide?
RevenueBase identified 5,151 geothermal companies 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?
Constellation, headquartered in Baltimore, tops this list with the largest team on record.
Which country has the most geothermal companies?
The United States leads with 1,147 companies, followed by France (330) and the United Kingdom (307). Every geothermal companies list by country and city is linked on this page.
Which city has the most geothermal companies?
Houston leads with 99 headquartered companies, followed by Calgary (79) and London (51).
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 39,535 verified decision-maker contacts tracked across these 5,151 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 15, 2026.
Ready to reach these companies? Verified emails and direct dials for all 5,151 geothermal companies worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.
More company lists
Company intelligence · public preview
Top 25 geothermal companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 5,151 matching company records for geothermal companies worldwide, with 136,184 tracked contacts and 39,535 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 15, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 geothermal companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Constellationconstellationenergy.comHQ: Baltimore, MD, United StatesReported employees: 10001+ | Baltimore, MD, United States | 10001+ | Exact match | 9,458 contacts → |
“Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Enel Green Powerenelgreenpower.comHQ: Roma, ItalyReported employees: 5,001-10,000 | Roma, Italy | 5,001-10,000 | Exact match | 5,251 contacts → |
“We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  GALPgalp.comHQ: Alcântara, PortugalReported employees: 5,001-10,000 | Alcântara, Portugal | 5,001-10,000 | Exact match | 4,960 contacts → |
“Galp is an energy company committed to the development of efficient solutions in its operations and in the integrated services it offers to customers.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Exxaro Resourcesexxaro.comHQ: Pretoria, South AfricaReported employees: 5,001-10,000 | Pretoria, South Africa | 5,001-10,000 | Exact match | 4,272 contacts → |
“Exxaro Resources Limited is among the top five coal producers in South Africa.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Statkraftstatkraft.comHQ: Oslo, NorwayReported employees: 5,001-10,000 | Oslo, Norway | 5,001-10,000 | Exact match | 4,161 contacts → |
“Statkraft is a leading company in hydropower internationally and Europe’s largest generator of renewable energy.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Fieldcorefieldcore.comHQ: Atlanta, GA, United StatesReported employees: 10001+ | Atlanta, GA, United States | 10001+ | Exact match | 3,700 contacts → |
“GE Vernova is a planned, purpose-built global energy company that includes Power, Wind, and Electrification businesses and is supported by its accelerator businesses of Advanced…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Greenko Groupgreenkogroup.comHQ: Hyderabad, IndiaReported employees: 1,001-5,000 | Hyderabad, India | 1,001-5,000 | Exact match | 2,578 contacts → |
“Greenko, is one of the World’s leading Energy Transition and Decarbonization solutions company, with an installed Renewable Energy capacity of ~7.5 GW across Wind, Solar and Hydro…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Ensign Energy Servicesensignenergy.comHQ: Calgary, AB, CanadaReported employees: 1,001-5,000 | Calgary, AB, Canada | 1,001-5,000 | Exact match | 2,176 contacts → |
“Ensign Energy Services Inc.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Calpinecalpine.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,112 contacts → |
“A business unit of Constellation (NASDAQ: CEG), Calpine Corporation is America’s largest generator of electricity from natural gas and geothermal resources with operations in…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Mitsubishi Power Americasamer.power.mhi.comHQ: Lake Mary, FL, United StatesReported employees: 1,001-5,000 | Lake Mary, FL, United States | 1,001-5,000 | Exact match | 1,859 contacts → |
“Mitsubishi Power Americas is creating a future that works for people and the planet through innovative power generation technology and solutions.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Maersk Drillingnoblecorp.comHQ: Kongens Lyngby, DenmarkReported employees: 1,001-5,000 | Kongens Lyngby, Denmark | 1,001-5,000 | Exact match | 1,816 contacts → |
“Noble Corporation today announced that the business combination Maersk Drilling has been successfully completed.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Avaada Groupavaada.comHQ: Mumbai, IndiaReported employees: 5,001-10,000 | Mumbai, India | 5,001-10,000 | Exact match | 1,747 contacts → |
“Avaada Group is a diversified clean energy conglomerate focused on the global energy transition, providing solutions in renewable power generation, solar PV manufacturing, green…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Drax Groupdrax.comHQ: Selby, United KingdomReported employees: 1,001-5,000 | Selby, United Kingdom | 1,001-5,000 | Exact match | 1,461 contacts → |
“Drax is enabling a zero carbon, lower cost energy future Drax Group is a renewable and flexible generation energy company engaged in renewable power generation, the production of…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Ormat Technologies, INCormat.comHQ: Reno, NV, United StatesReported employees: 1,001-5,000 | Reno, NV, United States | 1,001-5,000 | Exact match | 1,281 contacts → |
“With over five decades of experience, Ormat Technologies, Inc.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | PT Pertamina Geothermal Energy TBKpge.pertamina.com HQ: Gambir, IndonesiaReported employees: 201-500 | Gambir, Indonesia | 201-500 | Exact match | 1,242 contacts → |
“Indonesia Geothermal Company” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  PT Pertamina Drilling Services Indonesiapdsi.pertamina.comHQ: South Jakarta, IndonesiaReported employees: 1,001-5,000 | South Jakarta, Indonesia | 1,001-5,000 | Exact match | 1,200 contacts → |
“PT Pertamina Drilling Services Indonesia (Pertamina Drilling) was established on June 13th, 2008.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Scientific Drillingscientificdrilling.comHQ: The Woodlands, TX, United StatesReported employees: 1,001-5,000 | The Woodlands, TX, United States | 1,001-5,000 | Exact match | 1,134 contacts → |
“THE ULTIMATE PARTNER IN WELLBORE PLACEMENT Scientific Drilling International is an independent service provider offering a complete high accuracy wellbore placement and drilling…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  HMHhmhw.comHQ: Amsterdam, United StatesReported employees: 1,001-5,000 | Amsterdam, United States | 1,001-5,000 | Exact match | 1,097 contacts → |
“HMH is a premier drilling solutions provider - delivering a broad portfolio of products and services that are designed to be the safest and most efficient in the industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  CTG Brasilctgbr.com.brHQ: Sao Paulo, BrazilReported employees: 501-1,000 | Sao Paulo, Brazil | 501-1,000 | Exact match | 988 contacts → |
“Na CTG Brasil, trabalhamos por um único propósito: desenvolver o mundo com energia limpa em larga escala.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Juwi Groupjuwi.comHQ: Wörrstadt, GermanyReported employees: 1,001-5,000 | Wörrstadt, Germany | 1,001-5,000 | Exact match | 785 contacts → |
“For 30 years, we have been one of the leading specialists in renewable energies, offering complete project development and other services related to the planning, construction…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  LMKRlmkr.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 777 contacts → |
“Founded in 1994 and built on a strong geoscience and data management footprint, LMKR has evolved into a premier technology company expanding its reach to Clean Energy…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Malakoff Corporation Berhadmalakoff.com.myHQ: Wilayah Persekutuan, MalaysiaReported employees: 1,001-5,000 | Wilayah Persekutuan, Malaysia | 1,001-5,000 | Exact match | 744 contacts → |
“MALAKOFF CORPORATION BERHAD Registration No.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Isagen S.Aisagen.com.coHQ: Medellín, ColombiaReported employees: 501-1,000 | Medellín, Colombia | 501-1,000 | Exact match | 687 contacts → |
“Somos una empresa privada de generación y comercialización de energía con 27 centrales de generación que suman más de 3.100 MW de Capacidad Efectiva Neta.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Explomin Perforacionesexplomin.comHQ: Villa El Salvador, PeruReported employees: 1,001-5,000 | Villa El Salvador, Peru | 1,001-5,000 | Exact match | 645 contacts → |
“Explomin del Perú S.A.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Denbury INCdenbury.com HQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 587 contacts → |
“Denbury Inc, is an independent oil and natural gas company.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 5,151 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Geothermal companies: dataset insights
September 15, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
5,115 records in the displayed employee bands.
36 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 15, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Geothermal companies by location
36 lists · largest firstEvery Geothermal companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal companies based in the United States1,147
- Geothermal companies based in France330
- Geothermal companies based in the United Kingdom307
- Geothermal companies based in Canada303
- Geothermal companies based in Germany284
- Geothermal companies based in Italy277
- Geothermal companies based in Spain276
- Geothermal companies based in Brazil212
- Geothermal companies based in Türkiye187
- Geothermal companies based in Australia169
- Geothermal companies based in Indonesia151
- Geothermal companies based in the Netherlands140
- Geothermal companies based in India133
- Geothermal companies based in Poland109
- Geothermal companies based in Switzerland101
- Geothermal companies based in Chile94
- Geothermal companies based in Belgium75
- Geothermal companies based in Argentina69
- Geothermal companies based in Mexico68
- Geothermal companies based in Colombia66
- Geothermal companies based in South Africa54
- Geothermal companies based in Sweden54
- Geothermal companies based in Peru53
- Geothermal companies based in Finland47
- Geothermal companies based in Denmark45
- Geothermal companies based in Greece45
- Geothermal companies based in Japan43
- Geothermal companies based in Norway43
- Geothermal companies based in Austria40
- Geothermal companies based in New Zealand40
- Geothermal companies based in Iceland37
- Geothermal companies based in Portugal37
- Geothermal companies based in Czechia32
- Geothermal companies based in Malaysia30
- Geothermal companies based in Ireland27
- Geothermal companies based in Hungary26
Questions about this company list
What does Exact match mean for geothermal companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geothermal companies did RevenueBase find worldwide?
The saved snapshot records 5,151 matching company records, 136,184 tracked contacts and 39,535 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 15, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 geothermal companies worldwide. Snapshot: September 15, 2026. https://revenuebase.ai/companies/browse/geothermal-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 geothermal companies worldwide
RevenueBase records 5,151 matching company records for geothermal companies worldwide, with 136,184 tracked contacts and 39,535 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 15, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 geothermal companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Constellationconstellationenergy.com HQ: Baltimore, MD, United StatesReported employees: 10001+ | Baltimore, MD, United States | 10001+ | Exact match | 9,458 contacts → |
“Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Enel Green Powerenelgreenpower.com HQ: Roma, ItalyReported employees: 5,001-10,000 | Roma, Italy | 5,001-10,000 | Exact match | 5,251 contacts → |
“We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | GALPgalp.com HQ: Alcântara, PortugalReported employees: 5,001-10,000 | Alcântara, Portugal | 5,001-10,000 | Exact match | 4,960 contacts → |
“Galp is an energy company committed to the development of efficient solutions in its operations and in the integrated services it offers to customers.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Exxaro Resourcesexxaro.com HQ: Pretoria, South AfricaReported employees: 5,001-10,000 | Pretoria, South Africa | 5,001-10,000 | Exact match | 4,272 contacts → |
“Exxaro Resources Limited is among the top five coal producers in South Africa.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Statkraftstatkraft.com HQ: Oslo, NorwayReported employees: 5,001-10,000 | Oslo, Norway | 5,001-10,000 | Exact match | 4,161 contacts → |
“Statkraft is a leading company in hydropower internationally and Europe’s largest generator of renewable energy.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Fieldcorefieldcore.com HQ: Atlanta, GA, United StatesReported employees: 10001+ | Atlanta, GA, United States | 10001+ | Exact match | 3,700 contacts → |
“GE Vernova is a planned, purpose-built global energy company that includes Power, Wind, and Electrification businesses and is supported by its accelerator businesses of Advanced…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Greenko Groupgreenkogroup.com HQ: Hyderabad, IndiaReported employees: 1,001-5,000 | Hyderabad, India | 1,001-5,000 | Exact match | 2,578 contacts → |
“Greenko, is one of the World’s leading Energy Transition and Decarbonization solutions company, with an installed Renewable Energy capacity of ~7.5 GW across Wind, Solar and Hydro…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ensign Energy Servicesensignenergy.com HQ: Calgary, AB, CanadaReported employees: 1,001-5,000 | Calgary, AB, Canada | 1,001-5,000 | Exact match | 2,176 contacts → |
“Ensign Energy Services Inc.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Calpinecalpine.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,112 contacts → |
“A business unit of Constellation (NASDAQ: CEG), Calpine Corporation is America’s largest generator of electricity from natural gas and geothermal resources with operations in…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Mitsubishi Power Americasamer.power.mhi.com HQ: Lake Mary, FL, United StatesReported employees: 1,001-5,000 | Lake Mary, FL, United States | 1,001-5,000 | Exact match | 1,859 contacts → |
“Mitsubishi Power Americas is creating a future that works for people and the planet through innovative power generation technology and solutions.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Maersk Drillingnoblecorp.com HQ: Kongens Lyngby, DenmarkReported employees: 1,001-5,000 | Kongens Lyngby, Denmark | 1,001-5,000 | Exact match | 1,816 contacts → |
“Noble Corporation today announced that the business combination Maersk Drilling has been successfully completed.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Avaada Groupavaada.com HQ: Mumbai, IndiaReported employees: 5,001-10,000 | Mumbai, India | 5,001-10,000 | Exact match | 1,747 contacts → |
“Avaada Group is a diversified clean energy conglomerate focused on the global energy transition, providing solutions in renewable power generation, solar PV manufacturing, green…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Drax Groupdrax.com HQ: Selby, United KingdomReported employees: 1,001-5,000 | Selby, United Kingdom | 1,001-5,000 | Exact match | 1,461 contacts → |
“Drax is enabling a zero carbon, lower cost energy future Drax Group is a renewable and flexible generation energy company engaged in renewable power generation, the production of…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Ormat Technologies, INCormat.com HQ: Reno, NV, United StatesReported employees: 1,001-5,000 | Reno, NV, United States | 1,001-5,000 | Exact match | 1,281 contacts → |
“With over five decades of experience, Ormat Technologies, Inc.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | PT Pertamina Geothermal Energy TBKpge.pertamina.com HQ: Gambir, IndonesiaReported employees: 201-500 | Gambir, Indonesia | 201-500 | Exact match | 1,242 contacts → |
“Indonesia Geothermal Company” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | PT Pertamina Drilling Services Indonesiapdsi.pertamina.com HQ: South Jakarta, IndonesiaReported employees: 1,001-5,000 | South Jakarta, Indonesia | 1,001-5,000 | Exact match | 1,200 contacts → |
“PT Pertamina Drilling Services Indonesia (Pertamina Drilling) was established on June 13th, 2008.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Scientific Drillingscientificdrilling.com HQ: The Woodlands, TX, United StatesReported employees: 1,001-5,000 | The Woodlands, TX, United States | 1,001-5,000 | Exact match | 1,134 contacts → |
“THE ULTIMATE PARTNER IN WELLBORE PLACEMENT Scientific Drilling International is an independent service provider offering a complete high accuracy wellbore placement and drilling…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HMHhmhw.com HQ: Amsterdam, United StatesReported employees: 1,001-5,000 | Amsterdam, United States | 1,001-5,000 | Exact match | 1,097 contacts → |
“HMH is a premier drilling solutions provider - delivering a broad portfolio of products and services that are designed to be the safest and most efficient in the industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | CTG Brasilctgbr.com.br HQ: Sao Paulo, BrazilReported employees: 501-1,000 | Sao Paulo, Brazil | 501-1,000 | Exact match | 988 contacts → |
“Na CTG Brasil, trabalhamos por um único propósito: desenvolver o mundo com energia limpa em larga escala.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Juwi Groupjuwi.com HQ: Wörrstadt, GermanyReported employees: 1,001-5,000 | Wörrstadt, Germany | 1,001-5,000 | Exact match | 785 contacts → |
“For 30 years, we have been one of the leading specialists in renewable energies, offering complete project development and other services related to the planning, construction…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | LMKRlmkr.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 777 contacts → |
“Founded in 1994 and built on a strong geoscience and data management footprint, LMKR has evolved into a premier technology company expanding its reach to Clean Energy…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Malakoff Corporation Berhadmalakoff.com.my HQ: Wilayah Persekutuan, MalaysiaReported employees: 1,001-5,000 | Wilayah Persekutuan, Malaysia | 1,001-5,000 | Exact match | 744 contacts → |
“MALAKOFF CORPORATION BERHAD Registration No.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Isagen S.Aisagen.com.co HQ: Medellín, ColombiaReported employees: 501-1,000 | Medellín, Colombia | 501-1,000 | Exact match | 687 contacts → |
“Somos una empresa privada de generación y comercialización de energía con 27 centrales de generación que suman más de 3.100 MW de Capacidad Efectiva Neta.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Explomin Perforacionesexplomin.com HQ: Villa El Salvador, PeruReported employees: 1,001-5,000 | Villa El Salvador, Peru | 1,001-5,000 | Exact match | 645 contacts → |
“Explomin del Perú S.A.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Denbury INCdenbury.com HQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 587 contacts → |
“Denbury Inc, is an independent oil and natural gas company.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 5,151 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Geothermal companies: dataset insights
September 15, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
5,115 records in the displayed employee bands.
36 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 15, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Geothermal companies by location
36 lists · largest firstEvery Geothermal companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal companies based in the United States1,147
- Geothermal companies based in France330
- Geothermal companies based in the United Kingdom307
- Geothermal companies based in Canada303
- Geothermal companies based in Germany284
- Geothermal companies based in Italy277
- Geothermal companies based in Spain276
- Geothermal companies based in Brazil212
- Geothermal companies based in Türkiye187
- Geothermal companies based in Australia169
- Geothermal companies based in Indonesia151
- Geothermal companies based in the Netherlands140
- Geothermal companies based in India133
- Geothermal companies based in Poland109
- Geothermal companies based in Switzerland101
- Geothermal companies based in Chile94
- Geothermal companies based in Belgium75
- Geothermal companies based in Argentina69
- Geothermal companies based in Mexico68
- Geothermal companies based in Colombia66
- Geothermal companies based in South Africa54
- Geothermal companies based in Sweden54
- Geothermal companies based in Peru53
- Geothermal companies based in Finland47
- Geothermal companies based in Denmark45
- Geothermal companies based in Greece45
- Geothermal companies based in Japan43
- Geothermal companies based in Norway43
- Geothermal companies based in Austria40
- Geothermal companies based in New Zealand40
- Geothermal companies based in Iceland37
- Geothermal companies based in Portugal37
- Geothermal companies based in Czechia32
- Geothermal companies based in Malaysia30
- Geothermal companies based in Ireland27
- Geothermal companies based in Hungary26
Questions about this company list
What does Exact match mean for geothermal companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geothermal companies did RevenueBase find worldwide?
The saved snapshot records 5,151 matching company records, 136,184 tracked contacts and 39,535 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 15, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 geothermal companies worldwide. Snapshot: September 15, 2026. https://revenuebase.ai/companies/browse/geothermal-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗